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TrueNAS SNMP
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This template is for Zabbix version: 6.4

Also available for: 6.2 6.0

Source: https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/app/truenas_snmp?at=release/6.4

TrueNAS CORE by SNMP

Overview

Template for monitoring TrueNAS CORE by SNMP.

Requirements

Zabbix version: 6.4 and higher.

Tested versions

This template has been tested on:

TrueNAS CORE 12.0-U8
TrueNAS CORE 13.0-U5.3

Configuration

Zabbix should be configured according to the instructions in the Templates out of the box section.

Setup

Import the template into Zabbix.
Enable SNMP daemon at Services in TrueNAS CORE web interface: https://www.truenas.com/docs/core/uireference/services/snmpscreen/
Link the template to the host.

Macros used

Name	Description	Default
{$CPU.UTIL.CRIT}	Threshold of CPU utilization for warning trigger in %.	`90`
{$ICMP_LOSS_WARN}	Threshold of ICMP packets loss for warning trigger in %.	`20`
{$ICMP_RESPONSE_TIME_WARN}	Threshold of average ICMP response time for warning trigger in seconds.	`0.15`
{$IF.ERRORS.WARN}	Threshold of error packets rate for warning trigger. Can be used with interface name as context.	`2`
{$IF.UTIL.MAX}	Threshold of interface bandwidth utilization for warning trigger in %. Can be used with interface name as context.	`90`
{$IFCONTROL}	Macro for operational state of the interface for link down trigger. Can be used with interface name as context.	`1`
{$LOAD_AVG_PER_CPU.MAX.WARN}	Load per CPU considered sustainable. Tune if needed.	`1.5`
{$MEMORY.AVAILABLE.MIN}	Threshold of available memory for trigger in bytes.	`20M`
{$MEMORY.UTIL.MAX}	Threshold of memory utilization for trigger in %	`90`
{$NET.IF.IFADMINSTATUS.MATCHES}	This macro is used in filters of network interfaces discovery rule.	`^.*`
{$NET.IF.IFADMINSTATUS.NOT_MATCHES}	Ignore down(2) administrative status	`^2$`
{$NET.IF.IFALIAS.MATCHES}	This macro is used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFALIAS.NOT_MATCHES}	This macro is used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFDESCR.MATCHES}	This macro used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFDESCR.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFNAME.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFOPERSTATUS.MATCHES}	This macro used in filters of network interfaces discovery rule.	`^.*$`
{$NET.IF.IFOPERSTATUS.NOT_MATCHES}	Ignore notPresent(6)	`^6$`
{$NET.IF.IFTYPE.MATCHES}	This macro used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFTYPE.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$SNMP.TIMEOUT}	The time interval for SNMP availability trigger.	`5m`
{$SWAP.PFREE.MIN.WARN}	Threshold of free swap space for warning trigger in %.	`50`
{$VFS.DEV.DEVNAME.MATCHES}	This macro is used in block devices discovery. Can be overridden on the host or linked template level	`.+`
{$VFS.DEV.DEVNAME.NOT_MATCHES}	This macro is used in block devices discovery. Can be overridden on the host or linked template level	`Macro too long. Please see the template.`
{$DATASET.NAME.MATCHES}	This macro is used in datasets discovery. Can be overridden on the host or linked template level	`.+`
{$DATASET.NAME.NOT_MATCHES}	This macro is used in datasets discovery. Can be overridden on the host or linked template level	`^(boot\|.+\.system(.+)?$)`
{$ZPOOL.PUSED.MAX.WARN}	Threshold of used pool space for warning trigger in %.	`80`
{$ZPOOL.FREE.MIN.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$ZPOOL.PUSED.MAX.CRIT}	Threshold of used pool space for average severity trigger in %.	`90`
{$ZPOOL.FREE.MIN.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$DATASET.PUSED.MAX.WARN}	Threshold of used dataset space for warning trigger in %.	`80`
{$DATASET.FREE.MIN.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$DATASET.PUSED.MAX.CRIT}	Threshold of used dataset space for average severity trigger in %.	`90`
{$DATASET.FREE.MIN.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$TEMPERATURE.MAX.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`50`
{$TEMPERATURE.MAX.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`65`

Items

Name	Description	Type	Key and additional info
TrueNAS CORE: ICMP ping	Host accessibility by ICMP. 0 - ICMP ping fails. 1 - ICMP ping successful.	Simple check	icmpping
TrueNAS CORE: ICMP loss	Percentage of lost packets.	Simple check	icmppingloss
TrueNAS CORE: ICMP response time	ICMP ping response time (in seconds).	Simple check	icmppingsec
TrueNAS CORE: System contact details	MIB: SNMPv2-MIB The textual identification of the contact person for this managed node, together with information on how to contact this person. If no contact information is known, the value is the zero-length string.	SNMP agent	system.contact Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: System description	MIB: SNMPv2-MIB System description of the host.	SNMP agent	system.descr Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: System location	MIB: SNMPv2-MIB The physical location of this node. If the location is unknown, the value is the zero-length string.	SNMP agent	system.location Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: System name	MIB: SNMPv2-MIB The host name of the system.	SNMP agent	system.name Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: System object ID	MIB: SNMPv2-MIB The vendor authoritative identification of the network management subsystem contained in the entity. This value is allocated within the SMI enterprises subtree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining what kind of box is being managed.	SNMP agent	system.objectid Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: Uptime	MIB: HOST-RESOURCES-MIB The amount of time since this host was last initialized. Note that this is different from sysUpTime in the SNMPv2-MIB [RFC1907] because sysUpTime is the uptime of the network management portion of the system.	SNMP agent	system.uptime Preprocessing Custom multiplier: `0.01`
TrueNAS CORE: SNMP traps (fallback)	The item is used to collect all SNMP traps unmatched by other snmptrap items.	SNMP trap	snmptrap.fallback
TrueNAS CORE: SNMP agent availability	Availability of SNMP checks on the host. The value of this item corresponds to availability icons in the host list. Possible value: 0 - not available 1 - available 2 - unknown	Zabbix internal	zabbix[host,snmp,available]
TrueNAS CORE: Interrupts per second	MIB: UCD-SNMP-MIB Number of interrupts processed.	SNMP agent	system.cpu.intr Preprocessing Change per second
TrueNAS CORE: Context switches per second	MIB: UCD-SNMP-MIB Number of context switches.	SNMP agent	system.cpu.switches Preprocessing Change per second
TrueNAS CORE: Load average (1m avg)	MIB: UCD-SNMP-MIB The 1 minute load averages.	SNMP agent	system.cpu.load.avg1
TrueNAS CORE: Load average (5m avg)	MIB: UCD-SNMP-MIB The 5 minutes load averages.	SNMP agent	system.cpu.load.avg5
TrueNAS CORE: Load average (15m avg)	MIB: UCD-SNMP-MIB The 15 minutes load averages.	SNMP agent	system.cpu.load.avg15
TrueNAS CORE: Number of CPUs	MIB: HOST-RESOURCES-MIB Count the number of CPU cores by counting number of cores discovered in hrProcessorTable using LLD.	SNMP agent	system.cpu.num Preprocessing JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: Free memory	MIB: UCD-SNMP-MIB The amount of real/physical memory currently unused or available.	SNMP agent	vm.memory.free Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Memory (buffers)	MIB: UCD-SNMP-MIB The total amount of real or virtual memory currently allocated for use as memory buffers.	SNMP agent	vm.memory.buffers Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Memory (cached)	MIB: UCD-SNMP-MIB The total amount of real or virtual memory currently allocated for use as cached memory.	SNMP agent	vm.memory.cached Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Total memory	MIB: UCD-SNMP-MIB The total memory expressed in bytes.	SNMP agent	vm.memory.total Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Available memory	Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.	Calculated	vm.memory.available
TrueNAS CORE: Memory utilization	Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.	Calculated	vm.memory.util
TrueNAS CORE: Total swap space	MIB: UCD-SNMP-MIB The total amount of swap space configured for this host.	SNMP agent	system.swap.total Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Free swap space	MIB: UCD-SNMP-MIB The amount of swap space currently unused or available.	SNMP agent	system.swap.free Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Free swap space in %	The free space of the swap volume/file expressed in %.	Calculated	system.swap.pfree Preprocessing Check for not supported value ⛔️Custom on fail: Set value to: `100`
TrueNAS CORE: ARC size	MIB: FREENAS-MIB ARC size in bytes.	SNMP agent	truenas.zfs.arc.size Preprocessing Custom multiplier: `1024` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ARC metadata size	MIB: FREENAS-MIB ARC metadata size used in bytes.	SNMP agent	truenas.zfs.arc.meta Preprocessing Custom multiplier: `1024`
TrueNAS CORE: ARC data size	MIB: FREENAS-MIB ARC data size used in bytes.	SNMP agent	truenas.zfs.arc.data Preprocessing Custom multiplier: `1024`
TrueNAS CORE: ARC hits	MIB: FREENAS-MIB Total amount of cache hits in the ARC per second.	SNMP agent	truenas.zfs.arc.hits Preprocessing Change per second
TrueNAS CORE: ARC misses	MIB: FREENAS-MIB Total amount of cache misses in the ARC per second.	SNMP agent	truenas.zfs.arc.misses Preprocessing Change per second
TrueNAS CORE: ARC target size of cache	MIB: FREENAS-MIB ARC target size of cache in bytes.	SNMP agent	truenas.zfs.arc.c Preprocessing Custom multiplier: `1024` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ARC target size of MRU	MIB: FREENAS-MIB ARC target size of MRU in bytes.	SNMP agent	truenas.zfs.arc.p Preprocessing Custom multiplier: `1024` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ARC cache hit ratio	MIB: FREENAS-MIB ARC cache hit ration percentage.	SNMP agent	truenas.zfs.arc.hit.ratio
TrueNAS CORE: ARC cache miss ratio	MIB: FREENAS-MIB ARC cache miss ration percentage.	SNMP agent	truenas.zfs.arc.miss.ratio
TrueNAS CORE: L2ARC hits	MIB: FREENAS-MIB Hits to the L2 cache per second.	SNMP agent	truenas.zfs.l2arc.hits Preprocessing Change per second
TrueNAS CORE: L2ARC misses	MIB: FREENAS-MIB Misses to the L2 cache per second.	SNMP agent	truenas.zfs.l2arc.misses Preprocessing Change per second
TrueNAS CORE: L2ARC read rate	MIB: FREENAS-MIB Read rate from L2 cache in bytes per second.	SNMP agent	truenas.zfs.l2arc.read Preprocessing Change per second
TrueNAS CORE: L2ARC write rate	MIB: FREENAS-MIB Write rate from L2 cache in bytes per second.	SNMP agent	truenas.zfs.l2arc.write Preprocessing Change per second
TrueNAS CORE: L2ARC size	MIB: FREENAS-MIB L2ARC size in bytes.	SNMP agent	truenas.zfs.l2arc.size Preprocessing Custom multiplier: `1024` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ZIL operations 1 second	MIB: FREENAS-MIB The ops column parsed from the command zilstat 1 1.	SNMP agent	truenas.zfs.zil.ops1
TrueNAS CORE: ZIL operations 5 seconds	MIB: FREENAS-MIB The ops column parsed from the command zilstat 5 1.	SNMP agent	truenas.zfs.zil.ops5
TrueNAS CORE: ZIL operations 10 seconds	MIB: FREENAS-MIB The ops column parsed from the command zilstat 10 1.	SNMP agent	truenas.zfs.zil.ops10

Triggers

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Unavailable by ICMP ping	Last three attempts returned timeout. Please check device connectivity.	`max(/TrueNAS CORE by SNMP/icmpping,#3)=0`	High
TrueNAS CORE: High ICMP ping loss	ICMP packets loss detected.	`min(/TrueNAS CORE by SNMP/icmppingloss,5m)>{$ICMP_LOSS_WARN} and min(/TrueNAS CORE by SNMP/icmppingloss,5m)<100`	Warning	Depends on: TrueNAS CORE: Unavailable by ICMP ping
TrueNAS CORE: High ICMP ping response time	Average ICMP response time is too big.	`avg(/TrueNAS CORE by SNMP/icmppingsec,5m)>{$ICMP_RESPONSE_TIME_WARN}`	Warning	Depends on: TrueNAS CORE: Unavailable by ICMP ping
TrueNAS CORE: System name has changed	The name of the system has changed. Acknowledge to close the problem manually.	`last(/TrueNAS CORE by SNMP/system.name,#1)<>last(/TrueNAS CORE by SNMP/system.name,#2) and length(last(/TrueNAS CORE by SNMP/system.name))>0`	Info	Manual close: Yes
TrueNAS CORE: Host has been restarted	Uptime is less than 10 minutes.	`last(/TrueNAS CORE by SNMP/system.uptime)<10m`	Info	Manual close: Yes
TrueNAS CORE: No SNMP data collection	SNMP is not available for polling. Please check device connectivity and SNMP settings.	`max(/TrueNAS CORE by SNMP/zabbix[host,snmp,available],{$SNMP.TIMEOUT})=0`	Warning	Depends on: TrueNAS CORE: Unavailable by ICMP ping
TrueNAS CORE: Load average is too high	The load average per CPU is too high. The system may be slow to respond.	`min(/TrueNAS CORE by SNMP/system.cpu.load.avg1,5m)/last(/TrueNAS CORE by SNMP/system.cpu.num)>{$LOAD_AVG_PER_CPU.MAX.WARN} and last(/TrueNAS CORE by SNMP/system.cpu.load.avg5)>0 and last(/TrueNAS CORE by SNMP/system.cpu.load.avg15)>0`	Average
TrueNAS CORE: Lack of available memory	The system is running out of memory.	`min(/TrueNAS CORE by SNMP/vm.memory.available,5m)<{$MEMORY.AVAILABLE.MIN} and last(/TrueNAS CORE by SNMP/vm.memory.total)>0`	Average
TrueNAS CORE: High memory utilization	The system is running out of free memory.	`min(/TrueNAS CORE by SNMP/vm.memory.util,5m)>{$MEMORY.UTIL.MAX}`	Average	Depends on: TrueNAS CORE: Lack of available memory
TrueNAS CORE: High swap space usage	If there is no swap configured, this trigger is ignored.	`min(/TrueNAS CORE by SNMP/system.swap.pfree,5m)<{$SWAP.PFREE.MIN.WARN} and last(/TrueNAS CORE by SNMP/system.swap.total)>0`	Warning	Depends on: TrueNAS CORE: Lack of available memory TrueNAS CORE: High memory utilization

LLD rule CPU discovery

Name Description Type Key and additional info

CPU discovery

Name	Description	Type	Key and additional info
CPU discovery	This discovery will create set of per core CPU metrics from UCD-SNMP-MIB, using {#CPU.COUNT} in preprocessing. That's the only reason why LLD is used.	Dependent item	cpu.discovery Preprocessing JavaScript: `The text is too long. Please see the template.`

This discovery will create set of per core CPU metrics from UCD-SNMP-MIB, using {#CPU.COUNT} in preprocessing. That's the only reason why LLD is used.

Dependent item

cpu.discovery

Preprocessing

JavaScript: The text is too long. Please see the template.

Item prototypes for CPU discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: CPU idle time	MIB: UCD-SNMP-MIB The time the CPU has spent doing nothing.	SNMP agent	system.cpu.idle[{#SNMPINDEX}]
TrueNAS CORE: CPU system time	MIB: UCD-SNMP-MIB The time the CPU has spent running the kernel and its processes.	SNMP agent	system.cpu.system[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU user time	MIB: UCD-SNMP-MIB The time the CPU has spent running users' processes that are not niced.	SNMP agent	system.cpu.user[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU nice time	MIB: UCD-SNMP-MIB The time the CPU has spent running users' processes that have been niced.	SNMP agent	system.cpu.nice[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU iowait time	MIB: UCD-SNMP-MIB The amount of time the CPU has been waiting for I/O to complete.	SNMP agent	system.cpu.iowait[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU interrupt time	MIB: UCD-SNMP-MIB The amount of time the CPU has been servicing hardware interrupts.	SNMP agent	system.cpu.interrupt[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU utilization	The CPU utilization expressed in %.	Dependent item	system.cpu.util[{#SNMPINDEX}] Preprocessing JavaScript: `//Calculate utilization<br>return (100 - value)`

Trigger prototypes for CPU discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: High CPU utilization	The CPU utilization is too high. The system might be slow to respond.	`min(/TrueNAS CORE by SNMP/system.cpu.util[{#SNMPINDEX}],5m)>{$CPU.UTIL.CRIT}`	Warning	Depends on: TrueNAS CORE: Load average is too high

LLD rule Block devices discovery

Name	Description	Type	Key and additional info
Block devices discovery	Block devices are discovered from UCD-DISKIO-MIB::diskIOTable (http://net-snmp.sourceforge.net/docs/mibs/ucdDiskIOMIB.html#diskIOTable).	SNMP agent	vfs.dev.discovery

Item prototypes for Block devices discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: [{#DEVNAME}]: Disk read rate	MIB: UCD-DISKIO-MIB The number of read accesses from this device since boot.	SNMP agent	vfs.dev.read.rate[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: [{#DEVNAME}]: Disk write rate	MIB: UCD-DISKIO-MIB The number of write accesses from this device since boot.	SNMP agent	vfs.dev.write.rate[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: [{#DEVNAME}]: Disk utilization	MIB: UCD-DISKIO-MIB The 1 minute average load of disk (%).	SNMP agent	vfs.dev.util[{#SNMPINDEX}]

Name

Description

Type

Key and additional info

TrueNAS CORE: [{#DEVNAME}]: Disk read rate

MIB: UCD-DISKIO-MIB

The number of read accesses from this device since boot.

SNMP agent

vfs.dev.read.rate[{#SNMPINDEX}]

Preprocessing

Change per second

TrueNAS CORE: [{#DEVNAME}]: Disk write rate

MIB: UCD-DISKIO-MIB

The number of write accesses from this device since boot.

SNMP agent

vfs.dev.write.rate[{#SNMPINDEX}]

Preprocessing

Change per second

TrueNAS CORE: [{#DEVNAME}]: Disk utilization

MIB: UCD-DISKIO-MIB

The 1 minute average load of disk (%).

SNMP agent

vfs.dev.util[{#SNMPINDEX}]

LLD rule Network interfaces discovery

Name	Description	Type	Key and additional info
Network interfaces discovery	Discovering interfaces from IF-MIB.	SNMP agent	net.if.discovery

Item prototypes for Network interfaces discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Inbound packets discarded	MIB: IF-MIB The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.in.discards[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Inbound packets with errors	MIB: IF-MIB For packet-oriented interfaces, the number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. For character-oriented or fixed-length interfaces, the number of inbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.in.errors[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Bits received	MIB: IF-MIB The total number of octets received on the interface, including framing characters. This object is a 64-bit version of ifInOctets. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.in[{#SNMPINDEX}] Preprocessing Change per second Custom multiplier: `8`
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Outbound packets discarded	MIB: IF-MIB The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.out.discards[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Outbound packets with errors	MIB: IF-MIB For packet-oriented interfaces, the number of outbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. For character-oriented or fixed-length interfaces, the number of outbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.out.errors[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Bits sent	MIB: IF-MIB The total number of octets transmitted out of the interface, including framing characters. This object is a 64-bit version of ifOutOctets.Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.out[{#SNMPINDEX}] Preprocessing Change per second Custom multiplier: `8`
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Speed	MIB: IF-MIB An estimate of the interface's current bandwidth in units of 1,000,000 bits per second. If this object reports a value of `n' then the speed of the interface is somewhere in the range of` n-500,000' to`n+499,999'. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth. For a sub-layer which has no concept of bandwidth, this object should be zero.	SNMP agent	net.if.speed[{#SNMPINDEX}] Preprocessing Custom multiplier: `1000000` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Operational status	MIB: IF-MIB The current operational state of the interface. - The testing(3) state indicates that no operational packet scan be passed - If ifAdminStatus is down(2) then ifOperStatus should be down(2) - If ifAdminStatus is changed to up(1) then ifOperStatus should change to up(1) if the interface is ready to transmit and receive network traffic - It should change todormant(5) if the interface is waiting for external actions (such as a serial line waiting for an incoming connection) - It should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state - It should remain in the notPresent(6) state if the interface has missing(typically, hardware) components.	SNMP agent	net.if.status[{#SNMPINDEX}] Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Interface type	MIB: IF-MIB The type of interface. Additional values for ifType are assigned by the Internet Assigned Numbers Authority (IANA), through updating the syntax of the IANAifType textual convention.	SNMP agent	net.if.type[{#SNMPINDEX}] Preprocessing Discard unchanged with heartbeat: `6h`

Trigger prototypes for Network interfaces discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: High input error rate	It recovers when it is below 80% of the `{$IF.ERRORS.WARN:"{#IFNAME}"}` threshold.	`min(/TrueNAS CORE by SNMP/net.if.in.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}`	Warning	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: High inbound bandwidth usage	The utilization of the network interface is close to its estimated maximum bandwidth.	`(avg(/TrueNAS CORE by SNMP/net.if.in[{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])) and last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])>0`	Warning	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: High output error rate	It recovers when it is below 80% of the `{$IF.ERRORS.WARN:"{#IFNAME}"}` threshold.	`min(/TrueNAS CORE by SNMP/net.if.out.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}`	Warning	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: High outbound bandwidth usage	The utilization of the network interface is close to its estimated maximum bandwidth.	`(avg(/TrueNAS CORE by SNMP/net.if.out[{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])) and last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])>0`	Warning	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Ethernet has changed to lower speed than it was before	This Ethernet connection has transitioned down from its known maximum speed. This might be a sign of autonegotiation issues. Acknowledge to close the problem manually.	change(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])<0 and last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])>0 and ( last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=6 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=7 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=11 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=62 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=69 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=117 ) and (last(/TrueNAS CORE by SNMP/net.if.status[{#SNMPINDEX}])<>2)	Info	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down	This trigger expression works as follows: 1. It can be triggered if the operations status is down. 2. `{$IFCONTROL:"{#IFNAME}"}=1` - a user can redefine context macro to value - 0. That marks this interface as not important. No new trigger will be fired if this interface is down.	`{$IFCONTROL:"{#IFNAME}"}=1 and (last(/TrueNAS CORE by SNMP/net.if.status[{#SNMPINDEX}])=2)`	Average

LLD rule ZFS pools discovery

Name Description Type Key and additional info

ZFS pools discovery

Name	Description	Type	Key and additional info
ZFS pools discovery	ZFS pools discovery from FREENAS-MIB.	SNMP agent	truenas.zfs.pools.discovery Preprocessing Discard unchanged with heartbeat: `6h`

ZFS pools discovery from FREENAS-MIB.

SNMP agent

truenas.zfs.pools.discovery

Preprocessing

Discard unchanged with heartbeat: 6h

Item prototypes for ZFS pools discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: Pool [{#POOLNAME}]: Total space	MIB: FREENAS-MIB The size of the storage pool in bytes.	SNMP agent	truenas.zpool.size.total[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: Pool [{#POOLNAME}]: Used space	MIB: FREENAS-MIB The used size of the storage pool in bytes.	SNMP agent	truenas.zpool.used[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}`
TrueNAS CORE: Pool [{#POOLNAME}]: Available space	MIB: FREENAS-MIB The available size of the storage pool in bytes.	SNMP agent	truenas.zpool.avail[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}`
TrueNAS CORE: Pool [{#POOLNAME}]: Usage in %	The used size of the storage pool in %.	Calculated	truenas.zpool.pused[{#POOLNAME}]
TrueNAS CORE: Pool [{#POOLNAME}]: Health	MIB: FREENAS-MIB The current health of the containing pool, as reported by zpool status.	SNMP agent	truenas.zpool.health[{#POOLNAME}] Preprocessing Discard unchanged with heartbeat: `1h`
TrueNAS CORE: Pool [{#POOLNAME}]: Read operations rate	MIB: FREENAS-MIB The number of read I/O operations sent to the pool or device, including metadata requests (averaged since system booted).	SNMP agent	truenas.zpool.read.ops[{#POOLNAME}] Preprocessing Change per second
TrueNAS CORE: Pool [{#POOLNAME}]: Write operations rate	MIB: FREENAS-MIB The number of write I/O operations sent to the pool or device (averaged since system booted).	SNMP agent	truenas.zpool.write.ops[{#POOLNAME}] Preprocessing Change per second
TrueNAS CORE: Pool [{#POOLNAME}]: Read rate	MIB: FREENAS-MIB The bandwidth of all read operations (including metadata), expressed as units per second (averaged since system booted).	SNMP agent	truenas.zpool.read.bytes[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}` Change per second
TrueNAS CORE: Pool [{#POOLNAME}]: Write rate	MIB: FREENAS-MIB The bandwidth of all write operations, expressed as units per second (averaged since system booted).	SNMP agent	truenas.zpool.write.bytes[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}` Change per second

Trigger prototypes for ZFS pools discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Pool [{#POOLNAME}]: Very high space usage	Two conditions should match: 1. The first condition - utilization of the space should be above `{$ZPOOL.PUSED.MAX.CRIT:"{#POOLNAME}"}%.` 2. The second condition - the pool free space is less than `{$ZPOOL.FREE.MIN.CRIT:"{#POOLNAME}"}`.	`min(/TrueNAS CORE by SNMP/truenas.zpool.pused[{#POOLNAME}],5m) > {$ZPOOL.PUSED.MAX.CRIT:"{#POOLNAME}"} and last(/TrueNAS CORE by SNMP/truenas.zpool.avail[{#POOLNAME}]) < {$ZPOOL.FREE.MIN.CRIT:"{#POOLNAME}"}`	Average
TrueNAS CORE: Pool [{#POOLNAME}]: High space usage	Two conditions should match: 1. The first condition - utilization of the space should be above `{$ZPOOL.PUSED.MAX.WARN:"{#POOLNAME}"}%.` 2. The second condition - the pool free space is less than `{$ZPOOL.FREE.MIN.WARN:"{#POOLNAME}"}`.	`min(/TrueNAS CORE by SNMP/truenas.zpool.pused[{#POOLNAME}],5m) > {$ZPOOL.PUSED.MAX.WARN:"{#POOLNAME}"} and last(/TrueNAS CORE by SNMP/truenas.zpool.avail[{#POOLNAME}]) < {$ZPOOL.FREE.MIN.WARN:"{#POOLNAME}"}`	Warning	Depends on: TrueNAS CORE: Pool [{#POOLNAME}]: Very high space usage
TrueNAS CORE: Pool [{#POOLNAME}]: Status is not online	Please check pool status.	`last(/TrueNAS CORE by SNMP/truenas.zpool.health[{#POOLNAME}]) <> 0`	Average

LLD rule ZFS datasets discovery

Name Description Type Key and additional info

ZFS datasets discovery

Name	Description	Type	Key and additional info
ZFS datasets discovery	ZFS datasets discovery from FREENAS-MIB.	SNMP agent	truenas.zfs.dataset.discovery Preprocessing Discard unchanged with heartbeat: `6h`

ZFS datasets discovery from FREENAS-MIB.

SNMP agent

truenas.zfs.dataset.discovery

Preprocessing

Discard unchanged with heartbeat: 6h

Item prototypes for ZFS datasets discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Total space	MIB: FREENAS-MIB The size of the dataset in bytes.	SNMP agent	truenas.dataset.size.total[{#DATASET_NAME}] Preprocessing Custom multiplier: `{#DATASET_ALLOC_UNITS}` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Used space	MIB: FREENAS-MIB The used size of the dataset in bytes.	SNMP agent	truenas.dataset.used[{#DATASET_NAME}] Preprocessing Custom multiplier: `{#DATASET_ALLOC_UNITS}`
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Available space	MIB: FREENAS-MIB The available size of the dataset in bytes.	SNMP agent	truenas.dataset.avail[{#DATASET_NAME}] Preprocessing Custom multiplier: `{#DATASET_ALLOC_UNITS}`
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Usage in %	The used size of the dataset in %.	Calculated	truenas.dataset.pused[{#DATASET_NAME}]

Trigger prototypes for ZFS datasets discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Very high space usage	Two conditions should match: 1. The first condition - utilization of the space should be above `{$DATASET.PUSED.MAX.CRIT:"{#DATASET_NAME}"}%.` 2. The second condition - the dataset free space is less than `{$DATASET.FREE.MIN.CRIT:"{#POOLNAME}"}`.	`min(/TrueNAS CORE by SNMP/truenas.dataset.pused[{#DATASET_NAME}],5m) > {$DATASET.PUSED.MAX.CRIT:"{#DATASET_NAME}"} and last(/TrueNAS CORE by SNMP/truenas.dataset.avail[{#DATASET_NAME}]) < {$DATASET.FREE.MIN.CRIT:"{#POOLNAME}"}`	Average
TrueNAS CORE: Dataset [{#DATASET_NAME}]: High space usage	Two conditions should match: 1. The first condition - utilization of the space should be above `{$DATASET.PUSED.MAX.WARN:"{#DATASET_NAME}"}%.` 2. The second condition - the dataset free space is less than `{$DATASET.FREE.MIN.WARN:"{#POOLNAME}"}`.	`min(/TrueNAS CORE by SNMP/truenas.dataset.pused[{#DATASET_NAME}],5m) > {$DATASET.PUSED.MAX.WARN:"{#DATASET_NAME}"} and last(/TrueNAS CORE by SNMP/truenas.dataset.avail[{#DATASET_NAME}]) < {$DATASET.FREE.MIN.WARN:"{#POOLNAME}"}`	Warning	Depends on: TrueNAS CORE: Dataset [{#DATASET_NAME}]: Very high space usage

LLD rule ZFS volumes discovery

Name Description Type Key and additional info

ZFS volumes discovery

Name	Description	Type	Key and additional info
ZFS volumes discovery	ZFS volumes discovery from FREENAS-MIB.	SNMP agent	truenas.zfs.zvols.discovery Preprocessing Discard unchanged with heartbeat: `6h`

ZFS volumes discovery from FREENAS-MIB.

SNMP agent

truenas.zfs.zvols.discovery

Preprocessing

Discard unchanged with heartbeat: 6h

Item prototypes for ZFS volumes discovery

Name Description Type Key and additional info

TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Total space

Name	Description	Type	Key and additional info
TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Total space	MIB: FREENAS-MIB The size of the ZFS volume in bytes.	SNMP agent	truenas.zvol.size.total[{#ZVOL_NAME}] Preprocessing Custom multiplier: `{#ZVOL_ALLOC_UNITS}` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Used space	MIB: FREENAS-MIB The used size of the ZFS volume in bytes.	SNMP agent	truenas.zvol.used[{#ZVOL_NAME}] Preprocessing Custom multiplier: `{#ZVOL_ALLOC_UNITS}`
TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Available space	MIB: FREENAS-MIB The available of the ZFS volume in bytes.	SNMP agent	truenas.zvol.avail[{#ZVOL_NAME}] Preprocessing Custom multiplier: `{#ZVOL_ALLOC_UNITS}`

MIB: FREENAS-MIB

The size of the ZFS volume in bytes.

SNMP agent

truenas.zvol.size.total[{#ZVOL_NAME}]

Preprocessing

Custom multiplier: {#ZVOL_ALLOC_UNITS}
Discard unchanged with heartbeat: 1h

TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Used space

MIB: FREENAS-MIB

The used size of the ZFS volume in bytes.

SNMP agent

truenas.zvol.used[{#ZVOL_NAME}]

Preprocessing

Custom multiplier: {#ZVOL_ALLOC_UNITS}

TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Available space

MIB: FREENAS-MIB

The available of the ZFS volume in bytes.

SNMP agent

truenas.zvol.avail[{#ZVOL_NAME}]

Preprocessing

Custom multiplier: {#ZVOL_ALLOC_UNITS}

LLD rule Disks temperature discovery

Name Description Type Key and additional info

Disks temperature discovery

Name	Description	Type	Key and additional info
Disks temperature discovery	Disks temperature discovery from FREENAS-MIB.	SNMP agent	truenas.disk.temp.discovery Preprocessing Discard unchanged with heartbeat: `6h`

Disks temperature discovery from FREENAS-MIB.

SNMP agent

truenas.disk.temp.discovery

Preprocessing

Discard unchanged with heartbeat: 6h

Item prototypes for Disks temperature discovery

Name Description Type Key and additional info

TrueNAS CORE: Disk [{#DISK_NAME}]: Temperature

Name	Description	Type	Key and additional info
TrueNAS CORE: Disk [{#DISK_NAME}]: Temperature	MIB: FREENAS-MIB The temperature of this HDD in mC.	SNMP agent	truenas.disk.temp[{#DISK_NAME}] Preprocessing Custom multiplier: `0.001` Discard unchanged with heartbeat: `1h`

MIB: FREENAS-MIB

The temperature of this HDD in mC.

SNMP agent

truenas.disk.temp[{#DISK_NAME}]

Preprocessing

Custom multiplier: 0.001
Discard unchanged with heartbeat: 1h

Trigger prototypes for Disks temperature discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Disk [{#DISK_NAME}]: Average disk temperature is too high	Disk temperature is high.	`avg(/TrueNAS CORE by SNMP/truenas.disk.temp[{#DISK_NAME}],5m) > {$TEMPERATURE.MAX.CRIT:"{#DISK_NAME}"}`	Average
TrueNAS CORE: Disk [{#DISK_NAME}]: Average disk temperature is too high	Disk temperature is high.	`avg(/TrueNAS CORE by SNMP/truenas.disk.temp[{#DISK_NAME}],5m) > {$TEMPERATURE.MAX.WARN:"{#DISK_NAME}"}`	Warning

Feedback

Please report any issues with the template at https://support.zabbix.com

You can also provide feedback, discuss the template, or ask for help at ZABBIX forums

This template is for Zabbix version: 6.2

Also available for: 6.4 6.0

Source: https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/app/truenas_snmp?at=release/6.2

TrueNAS by SNMP

Overview

For Zabbix version: 6.2 and higher. Template for monitoring TrueNAS by SNMP

This template was tested on:

TrueNAS Core, version 12.0-U8

Setup

See Zabbix template operation for basic instructions.

Import template into Zabbix
Enable SNMP daemon at Services in TrueNAS web interface https://www.truenas.com/docs/core/services/snmp
Link template to the host

Zabbix configuration

No specific Zabbix configuration is required.

Macros used

Name	Description	Default
{$CPU.UTIL.CRIT}	Threshold of CPU utilization for warning trigger in %.	`90`
{$DATASET.FREE.MIN.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$DATASET.FREE.MIN.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$DATASET.NAME.MATCHES}	This macro is used in datasets discovery. Can be overridden on the host or linked template level	`.+`
{$DATASET.NAME.NOT_MATCHES}	This macro is used in datasets discovery. Can be overridden on the host or linked template level	`^(boot
{$DATASET.PUSED.MAX.CRIT}	Threshold of used dataset space for average severity trigger in %.	`90`
{$DATASET.PUSED.MAX.WARN}	Threshold of used dataset space for warning trigger in %.	`80`
{$ICMP_LOSS_WARN}	Threshold of ICMP packets loss for warning trigger in %.	`20`
{$ICMP_RESPONSE_TIME_WARN}	Threshold of average ICMP response time for warning trigger in seconds.	`0.15`
{$IF.ERRORS.WARN}	Threshold of error packets rate for warning trigger. Can be used with interface name as context.	`2`
{$IF.UTIL.MAX}	Threshold of interface bandwidth utilization for warning trigger in %. Can be used with interface name as context.	`90`
{$IFCONTROL}	Macro for operational state of the interface for link down trigger. Can be used with interface name as context.	`1`
{$LOAD_AVG_PER_CPU.MAX.WARN}	Load per CPU considered sustainable. Tune if needed.	`1.5`
{$MEMORY.AVAILABLE.MIN}	Threshold of available memory for trigger in bytes.	`20M`
{$MEMORY.UTIL.MAX}	Threshold of memory utilization for trigger in %	`90`
{$NET.IF.IFADMINSTATUS.MATCHES}	This macro is used in filters of network interfaces discovery rule.	`^.*`
{$NET.IF.IFADMINSTATUS.NOT_MATCHES}	Ignore down(2) administrative status	`^2$`
{$NET.IF.IFALIAS.MATCHES}	This macro is used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFALIAS.NOT_MATCHES}	This macro is used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFDESCR.MATCHES}	This macro used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFDESCR.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFNAME.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFOPERSTATUS.MATCHES}	This macro used in filters of network interfaces discovery rule.	`^.*$`
{$NET.IF.IFOPERSTATUS.NOT_MATCHES}	Ignore notPresent(6)	`^6$`
{$NET.IF.IFTYPE.MATCHES}	This macro used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFTYPE.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$SNMP.TIMEOUT}	The time interval for SNMP availability trigger.	`5m`
{$SWAP.PFREE.MIN.WARN}	Threshold of free swap space for warning trigger in %.	`50`
{$TEMPERATURE.MAX.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`65`
{$TEMPERATURE.MAX.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`50`
{$VFS.DEV.DEVNAME.MATCHES}	This macro is used in block devices discovery. Can be overridden on the host or linked template level	`.+`
{$VFS.DEV.DEVNAME.NOT_MATCHES}	This macro is used in block devices discovery. Can be overridden on the host or linked template level	`^(loop[0-9]*
{$ZPOOL.FREE.MIN.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$ZPOOL.FREE.MIN.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$ZPOOL.PUSED.MAX.CRIT}	Threshold of used pool space for average severity trigger in %.	`90`
{$ZPOOL.PUSED.MAX.WARN}	Threshold of used pool space for warning trigger in %.	`80`

Template links

There are no template links in this template.

Discovery rules

Name	Description	Type	Key and additional info
Block devices discovery	Block devices are discovered from UCD-DISKIO-MIB::diskIOTable (http://net-snmp.sourceforge.net/docs/mibs/ucdDiskIOMIB.html#diskIOTable).	SNMP	vfs.dev.discovery Filter: AND - {#DEVNAME} MATCHES_REGEX `{$VFS.DEV.DEVNAME.MATCHES}` - {#DEVNAME} NOT_MATCHES_REGEX `{$VFS.DEV.DEVNAME.NOT_MATCHES}`
CPU discovery	This discovery will create set of per core CPU metrics from UCD-SNMP-MIB, using {#CPU.COUNT} in preprocessing. That's the only reason why LLD is used.	DEPENDENT	cpu.discovery Preprocessing: - JAVASCRIPT: `The text is too long. Please see the template.`
Disks temperature discovery	Disks temperature discovery from FREENAS-MIB.	SNMP	truenas.disk.temp.discovery Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
Network interfaces discovery	Discovering interfaces from IF-MIB.	SNMP	net.if.discovery Filter: AND - {#IFADMINSTATUS} MATCHES_REGEX `{$NET.IF.IFADMINSTATUS.MATCHES}` - {#IFADMINSTATUS} NOT_MATCHES_REGEX `{$NET.IF.IFADMINSTATUS.NOT_MATCHES}` - {#IFOPERSTATUS} MATCHES_REGEX `{$NET.IF.IFOPERSTATUS.MATCHES}` - {#IFOPERSTATUS} NOT_MATCHES_REGEX `{$NET.IF.IFOPERSTATUS.NOT_MATCHES}` - {#IFNAME} MATCHES_REGEX `@Network interfaces for discovery` - {#IFNAME} NOT_MATCHES_REGEX `{$NET.IF.IFNAME.NOT_MATCHES}` - {#IFDESCR} MATCHES_REGEX `{$NET.IF.IFDESCR.MATCHES}` - {#IFDESCR} NOT_MATCHES_REGEX `{$NET.IF.IFDESCR.NOT_MATCHES}` - {#IFALIAS} MATCHES_REGEX `{$NET.IF.IFALIAS.MATCHES}` - {#IFALIAS} NOT_MATCHES_REGEX `{$NET.IF.IFALIAS.NOT_MATCHES}` - {#IFTYPE} MATCHES_REGEX `{$NET.IF.IFTYPE.MATCHES}` - {#IFTYPE} NOT_MATCHES_REGEX `{$NET.IF.IFTYPE.NOT_MATCHES}`
ZFS datasets discovery	ZFS datasets discovery from FREENAS-MIB.	SNMP	truenas.zfs.dataset.discovery Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h` Filter: AND - {#DATASET_NAME} MATCHES_REGEX `{$DATASET.NAME.MATCHES}` - {#DATASET_NAME} NOT_MATCHES_REGEX `{$DATASET.NAME.NOT_MATCHES}`
ZFS pools discovery	ZFS pools discovery from FREENAS-MIB.	SNMP	truenas.zfs.pools.discovery Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
ZFS volumes discovery	ZFS volumes discovery from FREENAS-MIB.	SNMP	truenas.zfs.zvols.discovery Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`

Items collected

Group	Name	Description	Type	Key and additional info
CPU	TrueNAS: Interrupts per second	MIB: UCD-SNMP-MIB Number of interrupts processed.	SNMP	system.cpu.intr Preprocessing: - CHANGE_PER_SECOND
CPU	TrueNAS: Context switches per second	MIB: UCD-SNMP-MIB Number of context switches.	SNMP	system.cpu.switches Preprocessing: - CHANGE_PER_SECOND
CPU	TrueNAS: Load average (1m avg)	MIB: UCD-SNMP-MIB The 1 minute load averages.	SNMP	system.cpu.load.avg1
CPU	TrueNAS: Load average (5m avg)	MIB: UCD-SNMP-MIB The 5 minutes load averages.	SNMP	system.cpu.load.avg5
CPU	TrueNAS: Load average (15m avg)	MIB: UCD-SNMP-MIB The 15 minutes load averages.	SNMP	system.cpu.load.avg15
CPU	TrueNAS: Number of CPUs	MIB: HOST-RESOURCES-MIB Count the number of CPU cores by counting number of cores discovered in hrProcessorTable using LLD.	SNMP	system.cpu.num Preprocessing: - JAVASCRIPT: `//count the number of cores return JSON.parse(value).length;`
CPU	TrueNAS: CPU idle time	MIB: UCD-SNMP-MIB The time the CPU has spent doing nothing.	SNMP	system.cpu.idle[{#SNMPINDEX}]
CPU	TrueNAS: CPU system time	MIB: UCD-SNMP-MIB The time the CPU has spent running the kernel and its processes.	SNMP	system.cpu.system[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND - JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}`
CPU	TrueNAS: CPU user time	MIB: UCD-SNMP-MIB The time the CPU has spent running users' processes that are not niced.	SNMP	system.cpu.user[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND - JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}`
CPU	TrueNAS: CPU nice time	MIB: UCD-SNMP-MIB The time the CPU has spent running users' processes that have been niced.	SNMP	system.cpu.nice[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND - JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}`
CPU	TrueNAS: CPU iowait time	MIB: UCD-SNMP-MIB The amount of time the CPU has been waiting for I/O to complete.	SNMP	system.cpu.iowait[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND - JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}`
CPU	TrueNAS: CPU interrupt time	MIB: UCD-SNMP-MIB The amount of time the CPU has been servicing hardware interrupts.	SNMP	system.cpu.interrupt[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND - JAVASCRIPT: `//to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}`
CPU	TrueNAS: CPU utilization	The CPU utilization expressed in %.	DEPENDENT	system.cpu.util[{#SNMPINDEX}] Preprocessing: - JAVASCRIPT: `//Calculate utilization return (100 - value)`
General	TrueNAS: System contact details	MIB: SNMPv2-MIB The textual identification of the contact person for this managed node, together with information on how to contact this person. If no contact information is known, the value is the zero-length string.	SNMP	system.contact Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
General	TrueNAS: System description	MIB: SNMPv2-MIB System description of the host.	SNMP	system.descr Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
General	TrueNAS: System location	MIB: SNMPv2-MIB The physical location of this node. If the location is unknown, the value is the zero-length string.	SNMP	system.location Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
General	TrueNAS: System name	MIB: SNMPv2-MIB The host name of the system.	SNMP	system.name Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
General	TrueNAS: System object ID	MIB: SNMPv2-MIB The vendor authoritative identification of the network management subsystem contained in the entity. This value is allocated within the SMI enterprises subtree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining what kind of box is being managed.	SNMP	system.objectid Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
Memory	TrueNAS: Free memory	MIB: UCD-SNMP-MIB The amount of real/physical memory currently unused or available.	SNMP	vm.memory.free Preprocessing: - MULTIPLIER: `1024`
Memory	TrueNAS: Memory (buffers)	MIB: UCD-SNMP-MIB The total amount of real or virtual memory currently allocated for use as memory buffers.	SNMP	vm.memory.buffers Preprocessing: - MULTIPLIER: `1024`
Memory	TrueNAS: Memory (cached)	MIB: UCD-SNMP-MIB The total amount of real or virtual memory currently allocated for use as cached memory.	SNMP	vm.memory.cached Preprocessing: - MULTIPLIER: `1024`
Memory	TrueNAS: Total memory	MIB: UCD-SNMP-MIB The total memory expressed in Bytes.	SNMP	vm.memory.total Preprocessing: - MULTIPLIER: `1024`
Memory	TrueNAS: Available memory	Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.	CALCULATED	vm.memory.available Expression: `last(//vm.memory.free)+last(//vm.memory.buffers)+last(//vm.memory.cached)`
Memory	TrueNAS: Memory utilization	Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.	CALCULATED	vm.memory.util Expression: `(last(//vm.memory.total)-(last(//vm.memory.free)+last(//vm.memory.buffers)+last(//vm.memory.cached)))/last(//vm.memory.total)*100`
Memory	TrueNAS: Total swap space	MIB: UCD-SNMP-MIB The total amount of swap space configured for this host.	SNMP	system.swap.total Preprocessing: - MULTIPLIER: `1024`
Memory	TrueNAS: Free swap space	MIB: UCD-SNMP-MIB The amount of swap space currently unused or available.	SNMP	system.swap.free Preprocessing: - MULTIPLIER: `1024`
Memory	TrueNAS: Free swap space in %	The free space of the swap volume/file expressed in %.	CALCULATED	system.swap.pfree Expression: `last(//system.swap.free)/last(//system.swap.total)*100`
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Inbound packets discarded	MIB: IF-MIB The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP	net.if.in.discards[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND: ``
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Inbound packets with errors	MIB: IF-MIB For packet-oriented interfaces, the number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. For character-oriented or fixed-length interfaces, the number of inbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP	net.if.in.errors[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND: ``
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Bits received	MIB: IF-MIB The total number of octets received on the interface, including framing characters. This object is a 64-bit version of ifInOctets. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP	net.if.in[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND: `` - MULTIPLIER: `8`
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Outbound packets discarded	MIB: IF-MIB The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP	net.if.out.discards[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND: ``
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Outbound packets with errors	MIB: IF-MIB For packet-oriented interfaces, the number of outbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. For character-oriented or fixed-length interfaces, the number of outbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP	net.if.out.errors[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND: ``
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Bits sent	MIB: IF-MIB The total number of octets transmitted out of the interface, including framing characters. This object is a 64-bit version of ifOutOctets.Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP	net.if.out[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND: `` - MULTIPLIER: `8`
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Speed	MIB: IF-MIB An estimate of the interface's current bandwidth in units of 1,000,000 bits per second. If this object reports a value of `n' then the speed of the interface is somewhere in the range of` n-500,000' to`n+499,999'. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth. For a sub-layer which has no concept of bandwidth, this object should be zero.	SNMP	net.if.speed[{#SNMPINDEX}] Preprocessing: - MULTIPLIER: `1000000` - DISCARD_UNCHANGED_HEARTBEAT: `1h`
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Operational status	MIB: IF-MIB The current operational state of the interface. - The testing(3) state indicates that no operational packet scan be passed - If ifAdminStatus is down(2) then ifOperStatus should be down(2) - If ifAdminStatus is changed to up(1) then ifOperStatus should change to up(1) if the interface is ready to transmit and receive network traffic - It should change todormant(5) if the interface is waiting for external actions (such as a serial line waiting for an incoming connection) - It should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state - It should remain in the notPresent(6) state if the interface has missing(typically, hardware) components.	SNMP	net.if.status[{#SNMPINDEX}] Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
Network interfaces	TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Interface type	MIB: IF-MIB The type of interface. Additional values for ifType are assigned by the Internet Assigned Numbers Authority (IANA), through updating the syntax of the IANAifType textual convention.	SNMP	net.if.type[{#SNMPINDEX}] Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `6h`
Status	TrueNAS: ICMP ping	Host accessibility by ICMP. 0 - ICMP ping fails. 1 - ICMP ping successful.	SIMPLE	icmpping
Status	TrueNAS: ICMP loss	Percentage of lost packets.	SIMPLE	icmppingloss
Status	TrueNAS: ICMP response time	ICMP ping response time (in seconds).	SIMPLE	icmppingsec
Status	TrueNAS: Uptime	MIB: SNMPv2-MIB The system uptime expressed in the following format:'N days, hh:mm:ss'.	SNMP	system.uptime Preprocessing: - MULTIPLIER: `0.01`
Status	TrueNAS: SNMP agent availability	Availability of SNMP checks on the host. The value of this item corresponds to availability icons in the host list. Possible value: 0 - not available 1 - available 2 - unknown	INTERNAL	zabbix[host,snmp,available]
Storage	TrueNAS: [{#DEVNAME}]: Disk read rate	MIB: UCD-DISKIO-MIB The number of read accesses from this device since boot.	SNMP	vfs.dev.read.rate[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND
Storage	TrueNAS: [{#DEVNAME}]: Disk write rate	MIB: UCD-DISKIO-MIB The number of write accesses from this device since boot.	SNMP	vfs.dev.write.rate[{#SNMPINDEX}] Preprocessing: - CHANGE_PER_SECOND
Storage	TrueNAS: [{#DEVNAME}]: Disk utilization	MIB: UCD-DISKIO-MIB The 1 minute average load of disk (%).	SNMP	vfs.dev.util[{#SNMPINDEX}]
TrueNAS	TrueNAS: ARC size	MIB: FREENAS-MIB ARC size in bytes.	SNMP	truenas.zfs.arc.size Preprocessing: - MULTIPLIER: `1024` - DISCARD_UNCHANGED_HEARTBEAT: `1h`
TrueNAS	TrueNAS: ARC metadata size	MIB: FREENAS-MIB ARC metadata size used in bytes.	SNMP	truenas.zfs.arc.meta Preprocessing: - MULTIPLIER: `1024`
TrueNAS	TrueNAS: ARC data size	MIB: FREENAS-MIB ARC data size used in bytes.	SNMP	truenas.zfs.arc.data Preprocessing: - MULTIPLIER: `1024`
TrueNAS	TrueNAS: ARC hits	MIB: FREENAS-MIB Total amount of cache hits in the ARC per second.	SNMP	truenas.zfs.arc.hits Preprocessing: - CHANGE_PER_SECOND
TrueNAS	TrueNAS: ARC misses	MIB: FREENAS-MIB Total amount of cache misses in the ARC per second.	SNMP	truenas.zfs.arc.misses Preprocessing: - CHANGE_PER_SECOND
TrueNAS	TrueNAS: ARC target size of cache	MIB: FREENAS-MIB ARC target size of cache in bytes.	SNMP	truenas.zfs.arc.c Preprocessing: - MULTIPLIER: `1024` - DISCARD_UNCHANGED_HEARTBEAT: `1h`
TrueNAS	TrueNAS: ARC target size of MRU	MIB: FREENAS-MIB ARC target size of MRU in bytes.	SNMP	truenas.zfs.arc.p Preprocessing: - MULTIPLIER: `1024` - DISCARD_UNCHANGED_HEARTBEAT: `1h`
TrueNAS	TrueNAS: ARC cache hit ratio	MIB: FREENAS-MIB ARC cache hit ration percentage.	SNMP	truenas.zfs.arc.hit.ratio
TrueNAS	TrueNAS: ARC cache miss ratio	MIB: FREENAS-MIB ARC cache miss ration percentage.	SNMP	truenas.zfs.arc.miss.ratio
TrueNAS	TrueNAS: L2ARC hits	MIB: FREENAS-MIB Hits to the L2 cache per second.	SNMP	truenas.zfs.l2arc.hits Preprocessing: - CHANGE_PER_SECOND
TrueNAS	TrueNAS: L2ARC misses	MIB: FREENAS-MIB Misses to the L2 cache per second.	SNMP	truenas.zfs.l2arc.misses Preprocessing: - CHANGE_PER_SECOND
TrueNAS	TrueNAS: L2ARC read rate	MIB: FREENAS-MIB Read rate from L2 cache in bytes per second.	SNMP	truenas.zfs.l2arc.read Preprocessing: - CHANGE_PER_SECOND
TrueNAS	TrueNAS: L2ARC write rate	MIB: FREENAS-MIB Write rate from L2 cache in bytes per second.	SNMP	truenas.zfs.l2arc.write Preprocessing: - CHANGE_PER_SECOND
TrueNAS	TrueNAS: L2ARC size	MIB: FREENAS-MIB L2ARC size in bytes.	SNMP	truenas.zfs.l2arc.size Preprocessing: - MULTIPLIER: `1024` - DISCARD_UNCHANGED_HEARTBEAT: `1h`
TrueNAS	TrueNAS: ZIL operations 1 second	MIB: FREENAS-MIB The ops column parsed from the command zilstat 1 1.	SNMP	truenas.zfs.zil.ops1
TrueNAS	TrueNAS: ZIL operations 5 seconds	MIB: FREENAS-MIB The ops column parsed from the command zilstat 5 1.	SNMP	truenas.zfs.zil.ops5
TrueNAS	TrueNAS: ZIL operations 10 seconds	MIB: FREENAS-MIB The ops column parsed from the command zilstat 10 1.	SNMP	truenas.zfs.zil.ops10
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Total space	MIB: FREENAS-MIB The size of the storage pool in bytes.	SNMP	truenas.zpool.size.total[{#POOLNAME}] Preprocessing: - MULTIPLIER: `{#POOL_ALLOC_UNITS}` - DISCARD_UNCHANGED_HEARTBEAT: `1h`
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Used space	MIB: FREENAS-MIB The used size of the storage pool in bytes.	SNMP	truenas.zpool.used[{#POOLNAME}] Preprocessing: - MULTIPLIER: `{#POOL_ALLOC_UNITS}`
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Available space	MIB: FREENAS-MIB The available size of the storage pool in bytes.	SNMP	truenas.zpool.avail[{#POOLNAME}] Preprocessing: - MULTIPLIER: `{#POOL_ALLOC_UNITS}`
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Usage in %	The used size of the storage pool in %.	CALCULATED	truenas.zpool.pused[{#POOLNAME}] Expression: `last(//truenas.zpool.used[{#POOLNAME}]) * 100 / last(//truenas.zpool.size.total[{#POOLNAME}])`
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Health	MIB: FREENAS-MIB The current health of the containing pool, as reported by zpool status.	SNMP	truenas.zpool.health[{#POOLNAME}] Preprocessing: - DISCARD_UNCHANGED_HEARTBEAT: `1h`
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Read operations rate	MIB: FREENAS-MIB The number of read I/O operations sent to the pool or device, including metadata requests (averaged since system booted).	SNMP	truenas.zpool.read.ops[{#POOLNAME}] Preprocessing: - CHANGE_PER_SECOND
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Write operations rate	MIB: FREENAS-MIB The number of write I/O operations sent to the pool or device (averaged since system booted).	SNMP	truenas.zpool.write.ops[{#POOLNAME}] Preprocessing: - CHANGE_PER_SECOND
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Read rate	MIB: FREENAS-MIB The bandwidth of all read operations (including metadata), expressed as units per second (averaged since system booted).	SNMP	truenas.zpool.read.bytes[{#POOLNAME}] Preprocessing: - MULTIPLIER: `{#POOL_ALLOC_UNITS}` - CHANGE_PER_SECOND
TrueNAS	TrueNAS: Pool [{#POOLNAME}]: Write rate	MIB: FREENAS-MIB The bandwidth of all write operations, expressed as units per second (averaged since system booted).	SNMP	truenas.zpool.write.bytes[{#POOLNAME}] Preprocessing: - MULTIPLIER: `{#POOL_ALLOC_UNITS}` - CHANGE_PER_SECOND
TrueNAS	TrueNAS: Dataset [{#DATASET_NAME}]: Total space	MIB: FREENAS-MIB The size of the dataset in bytes.	SNMP	truenas.dataset.size.total[{#DATASET_NAME}] Preprocessing: - MULTIPLIER: `{#DATASET_ALLOC_UNITS}` - DISCARD_UNCHANGED_HEARTBEAT: `1h`
TrueNAS	TrueNAS: Dataset [{#DATASET_NAME}]: Used space	MIB: FREENAS-MIB The used size of the dataset in bytes.	SNMP	truenas.dataset.used[{#DATASET_NAME}] Preprocessing: - MULTIPLIER: `{#DATASET_ALLOC_UNITS}`
TrueNAS	TrueNAS: Dataset [{#DATASET_NAME}]: Available space	MIB: FREENAS-MIB The available size of the dataset in bytes.	SNMP	truenas.dataset.avail[{#DATASET_NAME}] Preprocessing: - MULTIPLIER: `{#DATASET_ALLOC_UNITS}`
TrueNAS	TrueNAS: Dataset [{#DATASET_NAME}]: Usage in %	The used size of the dataset in %.	CALCULATED	truenas.dataset.pused[{#DATASET_NAME}] Expression: `last(//truenas.dataset.used[{#DATASET_NAME}]) * 100 / last(//truenas.dataset.size.total[{#DATASET_NAME}])`
TrueNAS	TrueNAS: ZFS volume [{#ZVOL_NAME}]: Total space	MIB: FREENAS-MIB The size of the ZFS volume in bytes.	SNMP	truenas.zvol.size.total[{#ZVOL_NAME}] Preprocessing: - MULTIPLIER: `{#ZVOL_ALLOC_UNITS}` - DISCARD_UNCHANGED_HEARTBEAT: `1h`
TrueNAS	TrueNAS: ZFS volume [{#ZVOL_NAME}]: Used space	MIB: FREENAS-MIB The used size of the ZFS volume in bytes.	SNMP	truenas.zvol.used[{#ZVOL_NAME}] Preprocessing: - MULTIPLIER: `{#ZVOL_ALLOC_UNITS}`
TrueNAS	TrueNAS: ZFS volume [{#ZVOL_NAME}]: Available space	MIB: FREENAS-MIB The available of the ZFS volume in bytes.	SNMP	truenas.zvol.avail[{#ZVOL_NAME}] Preprocessing: - MULTIPLIER: `{#ZVOL_ALLOC_UNITS}`
TrueNAS	TrueNAS: Disk [{#DISK_NAME}]: Temperature	MIB: FREENAS-MIB The temperature of this HDD in mC.	SNMP	truenas.disk.temp[{#DISK_NAME}] Preprocessing: - MULTIPLIER: `0.001` - DISCARD_UNCHANGED_HEARTBEAT: `1h`

Triggers

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS: Load average is too high	Per CPU load average is too high. Your system may be slow to respond.	`min(/TrueNAS by SNMP/system.cpu.load.avg1,5m)/last(/TrueNAS by SNMP/system.cpu.num)>{$LOAD_AVG_PER_CPU.MAX.WARN} and last(/TrueNAS by SNMP/system.cpu.load.avg5)>0 and last(/TrueNAS by SNMP/system.cpu.load.avg15)>0`	AVERAGE
TrueNAS: High CPU utilization	The CPU utilization is too high. The system might be slow to respond.	`min(/TrueNAS by SNMP/system.cpu.util[{#SNMPINDEX}],5m)>{$CPU.UTIL.CRIT}`	WARNING	Depends on: - TrueNAS: Load average is too high
TrueNAS: System name has changed	The name of the system has changed. Ack to close the problem manually.	`last(/TrueNAS by SNMP/system.name,#1)<>last(/TrueNAS by SNMP/system.name,#2) and length(last(/TrueNAS by SNMP/system.name))>0`	INFO	Manual close: YES
TrueNAS: Lack of available memory	The system is running out of memory.	`min(/TrueNAS by SNMP/vm.memory.available,5m)<{$MEMORY.AVAILABLE.MIN} and last(/TrueNAS by SNMP/vm.memory.total)>0`	AVERAGE
TrueNAS: High memory utilization	The system is running out of free memory.	`min(/TrueNAS by SNMP/vm.memory.util,5m)>{$MEMORY.UTIL.MAX}`	AVERAGE	Depends on: - TrueNAS: Lack of available memory
TrueNAS: High swap space usage	This trigger is ignored, if there is no swap configured.	`min(/TrueNAS by SNMP/system.swap.pfree,5m)<{$SWAP.PFREE.MIN.WARN} and last(/TrueNAS by SNMP/system.swap.total)>0`	WARNING	Depends on: - TrueNAS: High memory utilization - TrueNAS: Lack of available memory
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: High input error rate	Recovers when below 80% of {$IF.ERRORS.WARN:"{#IFNAME}"} threshold.	`min(/TrueNAS by SNMP/net.if.in.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}` Recovery expression: `max(/TrueNAS by SNMP/net.if.in.errors[{#SNMPINDEX}],5m)<{$IF.ERRORS.WARN:"{#IFNAME}"}*0.8`	WARNING	Depends on: - TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: High inbound bandwidth usage	The network interface utilization is close to its estimated maximum bandwidth.	`(avg(/TrueNAS by SNMP/net.if.in[{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)last(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])) and last(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])>0` Recovery expression: `avg(/TrueNAS by SNMP/net.if.in[{#SNMPINDEX}],15m)<(({$IF.UTIL.MAX:"{#IFNAME}"}-3)/100)last(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])`	WARNING	Depends on: - TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: High output error rate	Recovers when below 80% of {$IF.ERRORS.WARN:"{#IFNAME}"} threshold.	`min(/TrueNAS by SNMP/net.if.out.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}` Recovery expression: `max(/TrueNAS by SNMP/net.if.out.errors[{#SNMPINDEX}],5m)<{$IF.ERRORS.WARN:"{#IFNAME}"}*0.8`	WARNING	Depends on: - TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: High outbound bandwidth usage	The network interface utilization is close to its estimated maximum bandwidth.	`(avg(/TrueNAS by SNMP/net.if.out[{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)last(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])) and last(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])>0` Recovery expression: `avg(/TrueNAS by SNMP/net.if.out[{#SNMPINDEX}],15m)<(({$IF.UTIL.MAX:"{#IFNAME}"}-3)/100)last(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])`	WARNING	Depends on: - TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Ethernet has changed to lower speed than it was before	This Ethernet connection has transitioned down from its known maximum speed. This might be a sign of autonegotiation issues. Ack to close.	change(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])<0 and last(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])>0 and ( last(/TrueNAS by SNMP/net.if.type[{#SNMPINDEX}])=6 or last(/TrueNAS by SNMP/net.if.type[{#SNMPINDEX}])=7 or last(/TrueNAS by SNMP/net.if.type[{#SNMPINDEX}])=11 or last(/TrueNAS by SNMP/net.if.type[{#SNMPINDEX}])=62 or last(/TrueNAS by SNMP/net.if.type[{#SNMPINDEX}])=69 or last(/TrueNAS by SNMP/net.if.type[{#SNMPINDEX}])=117 ) and (last(/TrueNAS by SNMP/net.if.status[{#SNMPINDEX}])<>2) Recovery expression: `(change(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}])>0 and last(/TrueNAS by SNMP/net.if.speed[{#SNMPINDEX}],#2)>0) or (last(/TrueNAS by SNMP/net.if.status[{#SNMPINDEX}])=2)`	INFO	Depends on: - TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down	This trigger expression works as follows: 1. Can be triggered if operations status is down. 2. {$IFCONTROL:"{#IFNAME}"}=1 - user can redefine Context macro to value - 0. That marks this interface as not important. No new trigger will be fired if this interface is down.	`{$IFCONTROL:"{#IFNAME}"}=1 and (last(/TrueNAS by SNMP/net.if.status[{#SNMPINDEX}])=2)`	AVERAGE
TrueNAS: Unavailable by ICMP ping	Last three attempts returned timeout. Please check device connectivity.	`max(/TrueNAS by SNMP/icmpping,#3)=0`	HIGH
TrueNAS: High ICMP ping loss	ICMP packets loss detected.	`min(/TrueNAS by SNMP/icmppingloss,5m)>{$ICMP_LOSS_WARN} and min(/TrueNAS by SNMP/icmppingloss,5m)<100`	WARNING	Depends on: - TrueNAS: Unavailable by ICMP ping
TrueNAS: High ICMP ping response time	Average ICMP response time is too big.	`avg(/TrueNAS by SNMP/icmppingsec,5m)>{$ICMP_RESPONSE_TIME_WARN}`	WARNING	Depends on: - TrueNAS: Unavailable by ICMP ping
TrueNAS: Host has been restarted	The host uptime is less than 10 minutes.	`last(/TrueNAS by SNMP/system.uptime)<10m`	INFO	Manual close: YES
TrueNAS: No SNMP data collection	SNMP is not available for polling. Please check device connectivity and SNMP settings.	`max(/TrueNAS by SNMP/zabbix[host,snmp,available],{$SNMP.TIMEOUT})=0`	WARNING	Depends on: - TrueNAS: Unavailable by ICMP ping
TrueNAS: Pool [{#POOLNAME}]: Very high space usage	Two conditions should match: First, space utilization should be above {$ZPOOL.PUSED.MAX.CRIT:"{#POOLNAME}"}%. Second condition: The pool free space is less than {$ZPOOL.FREE.MIN.CRIT:"{#POOLNAME}"}.	`min(/TrueNAS by SNMP/truenas.zpool.pused[{#POOLNAME}],5m) > {$ZPOOL.PUSED.MAX.CRIT:"{#POOLNAME}"} and last(/TrueNAS by SNMP/truenas.zpool.avail[{#POOLNAME}]) < {$ZPOOL.FREE.MIN.CRIT:"{#POOLNAME}"}`	AVERAGE
TrueNAS: Pool [{#POOLNAME}]: High space usage	Two conditions should match: First, space utilization should be above {$ZPOOL.PUSED.MAX.WARN:"{#POOLNAME}"}%. Second condition: The pool free space is less than {$ZPOOL.FREE.MIN.WARN:"{#POOLNAME}"}.	`min(/TrueNAS by SNMP/truenas.zpool.pused[{#POOLNAME}],5m) > {$ZPOOL.PUSED.MAX.WARN:"{#POOLNAME}"} and last(/TrueNAS by SNMP/truenas.zpool.avail[{#POOLNAME}]) < {$ZPOOL.FREE.MIN.WARN:"{#POOLNAME}"}`	WARNING	Depends on: - TrueNAS: Pool [{#POOLNAME}]: Very high space usage
TrueNAS: Pool [{#POOLNAME}]: Status is not online	Please check pool status.	`last(/TrueNAS by SNMP/truenas.zpool.health[{#POOLNAME}]) <> 0`	AVERAGE
TrueNAS: Dataset [{#DATASET_NAME}]: Very high space usage	Two conditions should match: First, space utilization should be above {$DATASET.PUSED.MAX.CRIT:"{#DATASET_NAME}"}%. Second condition: The dataset free space is less than {$DATASET.FREE.MIN.CRIT:"{#POOLNAME}"}.	`min(/TrueNAS by SNMP/truenas.dataset.pused[{#DATASET_NAME}],5m) > {$DATASET.PUSED.MAX.CRIT:"{#DATASET_NAME}"} and last(/TrueNAS by SNMP/truenas.dataset.avail[{#DATASET_NAME}]) < {$DATASET.FREE.MIN.CRIT:"{#POOLNAME}"}`	AVERAGE
TrueNAS: Dataset [{#DATASET_NAME}]: High space usage	Two conditions should match: First, space utilization should be above {$DATASET.PUSED.MAX.WARN:"{#DATASET_NAME}"}%. Second condition: The dataset free space is less than {$DATASET.FREE.MIN.WARN:"{#POOLNAME}"}.	`min(/TrueNAS by SNMP/truenas.dataset.pused[{#DATASET_NAME}],5m) > {$DATASET.PUSED.MAX.WARN:"{#DATASET_NAME}"} and last(/TrueNAS by SNMP/truenas.dataset.avail[{#DATASET_NAME}]) < {$DATASET.FREE.MIN.WARN:"{#POOLNAME}"}`	WARNING	Depends on: - TrueNAS: Dataset [{#DATASET_NAME}]: Very high space usage
TrueNAS: Disk [{#DISK_NAME}]: Average disk temperature is too high	Disk temperature is high.	`avg(/TrueNAS by SNMP/truenas.disk.temp[{#DISK_NAME}],5m) > {$TEMPERATURE.MAX.CRIT:"{#DISK_NAME}"}`	AVERAGE
TrueNAS: Disk [{#DISK_NAME}]: Average disk temperature is too high	Disk temperature is high.	`avg(/TrueNAS by SNMP/truenas.disk.temp[{#DISK_NAME}],5m) > {$TEMPERATURE.MAX.WARN:"{#DISK_NAME}"}`	WARNING

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This template is for Zabbix version: 6.0

Also available for: 6.4 6.2

Source: https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/app/truenas_snmp?at=release/6.0

TrueNAS CORE by SNMP

Overview

Template for monitoring TrueNAS CORE by SNMP.

Requirements

Zabbix version: 6.0 and higher.

Tested versions

This template has been tested on:

TrueNAS CORE 12.0-U8
TrueNAS CORE 13.0-U5.3

Configuration

Zabbix should be configured according to the instructions in the Templates out of the box section.

Setup

Import the template into Zabbix.
Enable SNMP daemon at Services in TrueNAS CORE web interface: https://www.truenas.com/docs/core/uireference/services/snmpscreen/
Link the template to the host.

Macros used

Name	Description	Default
{$CPU.UTIL.CRIT}	Threshold of CPU utilization for warning trigger in %.	`90`
{$ICMP_LOSS_WARN}	Threshold of ICMP packets loss for warning trigger in %.	`20`
{$ICMP_RESPONSE_TIME_WARN}	Threshold of average ICMP response time for warning trigger in seconds.	`0.15`
{$IF.ERRORS.WARN}	Threshold of error packets rate for warning trigger. Can be used with interface name as context.	`2`
{$IF.UTIL.MAX}	Threshold of interface bandwidth utilization for warning trigger in %. Can be used with interface name as context.	`90`
{$IFCONTROL}	Macro for operational state of the interface for link down trigger. Can be used with interface name as context.	`1`
{$LOAD_AVG_PER_CPU.MAX.WARN}	Load per CPU considered sustainable. Tune if needed.	`1.5`
{$MEMORY.AVAILABLE.MIN}	Threshold of available memory for trigger in bytes.	`20M`
{$MEMORY.UTIL.MAX}	Threshold of memory utilization for trigger in %	`90`
{$NET.IF.IFADMINSTATUS.MATCHES}	This macro is used in filters of network interfaces discovery rule.	`^.*`
{$NET.IF.IFADMINSTATUS.NOT_MATCHES}	Ignore down(2) administrative status	`^2$`
{$NET.IF.IFALIAS.MATCHES}	This macro is used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFALIAS.NOT_MATCHES}	This macro is used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFDESCR.MATCHES}	This macro used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFDESCR.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFNAME.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$NET.IF.IFOPERSTATUS.MATCHES}	This macro used in filters of network interfaces discovery rule.	`^.*$`
{$NET.IF.IFOPERSTATUS.NOT_MATCHES}	Ignore notPresent(6)	`^6$`
{$NET.IF.IFTYPE.MATCHES}	This macro used in filters of network interfaces discovery rule.	`.*`
{$NET.IF.IFTYPE.NOT_MATCHES}	This macro used in filters of network interfaces discovery rule.	`CHANGE_IF_NEEDED`
{$SNMP.TIMEOUT}	The time interval for SNMP availability trigger.	`5m`
{$SWAP.PFREE.MIN.WARN}	Threshold of free swap space for warning trigger in %.	`50`
{$VFS.DEV.DEVNAME.MATCHES}	This macro is used in block devices discovery. Can be overridden on the host or linked template level	`.+`
{$VFS.DEV.DEVNAME.NOT_MATCHES}	This macro is used in block devices discovery. Can be overridden on the host or linked template level	`Macro too long. Please see the template.`
{$DATASET.NAME.MATCHES}	This macro is used in datasets discovery. Can be overridden on the host or linked template level	`.+`
{$DATASET.NAME.NOT_MATCHES}	This macro is used in datasets discovery. Can be overridden on the host or linked template level	`^(boot\|.+\.system(.+)?$)`
{$ZPOOL.PUSED.MAX.WARN}	Threshold of used pool space for warning trigger in %.	`80`
{$ZPOOL.FREE.MIN.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$ZPOOL.PUSED.MAX.CRIT}	Threshold of used pool space for average severity trigger in %.	`90`
{$ZPOOL.FREE.MIN.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$DATASET.PUSED.MAX.WARN}	Threshold of used dataset space for warning trigger in %.	`80`
{$DATASET.FREE.MIN.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$DATASET.PUSED.MAX.CRIT}	Threshold of used dataset space for average severity trigger in %.	`90`
{$DATASET.FREE.MIN.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`5G`
{$TEMPERATURE.MAX.WARN}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`50`
{$TEMPERATURE.MAX.CRIT}	This macro is used for trigger expression. It can be overridden on the host or linked on the template level.	`65`

Items

Name	Description	Type	Key and additional info
TrueNAS CORE: ICMP ping	Host accessibility by ICMP. 0 - ICMP ping fails. 1 - ICMP ping successful.	Simple check	icmpping
TrueNAS CORE: ICMP loss	Percentage of lost packets.	Simple check	icmppingloss
TrueNAS CORE: ICMP response time	ICMP ping response time (in seconds).	Simple check	icmppingsec
TrueNAS CORE: System contact details	MIB: SNMPv2-MIB The textual identification of the contact person for this managed node, together with information on how to contact this person. If no contact information is known, the value is the zero-length string.	SNMP agent	system.contact Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: System description	MIB: SNMPv2-MIB System description of the host.	SNMP agent	system.descr Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: System location	MIB: SNMPv2-MIB The physical location of this node. If the location is unknown, the value is the zero-length string.	SNMP agent	system.location Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: System name	MIB: SNMPv2-MIB The host name of the system.	SNMP agent	system.name Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: System object ID	MIB: SNMPv2-MIB The vendor authoritative identification of the network management subsystem contained in the entity. This value is allocated within the SMI enterprises subtree (1.3.6.1.4.1) and provides an easy and unambiguous means for determining what kind of box is being managed.	SNMP agent	system.objectid Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: Uptime	MIB: HOST-RESOURCES-MIB The amount of time since this host was last initialized. Note that this is different from sysUpTime in the SNMPv2-MIB [RFC1907] because sysUpTime is the uptime of the network management portion of the system.	SNMP agent	system.uptime Preprocessing Custom multiplier: `0.01`
TrueNAS CORE: SNMP traps (fallback)	The item is used to collect all SNMP traps unmatched by other snmptrap items.	SNMP trap	snmptrap.fallback
TrueNAS CORE: SNMP agent availability	Availability of SNMP checks on the host. The value of this item corresponds to availability icons in the host list. Possible value: 0 - not available 1 - available 2 - unknown	Zabbix internal	zabbix[host,snmp,available]
TrueNAS CORE: Interrupts per second	MIB: UCD-SNMP-MIB Number of interrupts processed.	SNMP agent	system.cpu.intr Preprocessing Change per second
TrueNAS CORE: Context switches per second	MIB: UCD-SNMP-MIB Number of context switches.	SNMP agent	system.cpu.switches Preprocessing Change per second
TrueNAS CORE: Load average (1m avg)	MIB: UCD-SNMP-MIB The 1 minute load averages.	SNMP agent	system.cpu.load.avg1
TrueNAS CORE: Load average (5m avg)	MIB: UCD-SNMP-MIB The 5 minutes load averages.	SNMP agent	system.cpu.load.avg5
TrueNAS CORE: Load average (15m avg)	MIB: UCD-SNMP-MIB The 15 minutes load averages.	SNMP agent	system.cpu.load.avg15
TrueNAS CORE: Number of CPUs	MIB: HOST-RESOURCES-MIB Count the number of CPU cores by counting number of cores discovered in hrProcessorTable using LLD.	SNMP agent	system.cpu.num Preprocessing JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: Free memory	MIB: UCD-SNMP-MIB The amount of real/physical memory currently unused or available.	SNMP agent	vm.memory.free Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Memory (buffers)	MIB: UCD-SNMP-MIB The total amount of real or virtual memory currently allocated for use as memory buffers.	SNMP agent	vm.memory.buffers Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Memory (cached)	MIB: UCD-SNMP-MIB The total amount of real or virtual memory currently allocated for use as cached memory.	SNMP agent	vm.memory.cached Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Total memory	MIB: UCD-SNMP-MIB The total memory expressed in bytes.	SNMP agent	vm.memory.total Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Available memory	Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.	Calculated	vm.memory.available
TrueNAS CORE: Memory utilization	Please note that memory utilization is a rough estimate, since memory available is calculated as free+buffers+cached, which is not 100% accurate, but the best we can get using SNMP.	Calculated	vm.memory.util
TrueNAS CORE: Total swap space	MIB: UCD-SNMP-MIB The total amount of swap space configured for this host.	SNMP agent	system.swap.total Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Free swap space	MIB: UCD-SNMP-MIB The amount of swap space currently unused or available.	SNMP agent	system.swap.free Preprocessing Custom multiplier: `1024`
TrueNAS CORE: Free swap space in %	The free space of the swap volume/file expressed in %.	Calculated	system.swap.pfree Preprocessing Check for not supported value ⛔️Custom on fail: Set value to: `100`
TrueNAS CORE: ARC size	MIB: FREENAS-MIB ARC size in bytes.	SNMP agent	truenas.zfs.arc.size Preprocessing Custom multiplier: `1024` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ARC metadata size	MIB: FREENAS-MIB ARC metadata size used in bytes.	SNMP agent	truenas.zfs.arc.meta Preprocessing Custom multiplier: `1024`
TrueNAS CORE: ARC data size	MIB: FREENAS-MIB ARC data size used in bytes.	SNMP agent	truenas.zfs.arc.data Preprocessing Custom multiplier: `1024`
TrueNAS CORE: ARC hits	MIB: FREENAS-MIB Total amount of cache hits in the ARC per second.	SNMP agent	truenas.zfs.arc.hits Preprocessing Change per second
TrueNAS CORE: ARC misses	MIB: FREENAS-MIB Total amount of cache misses in the ARC per second.	SNMP agent	truenas.zfs.arc.misses Preprocessing Change per second
TrueNAS CORE: ARC target size of cache	MIB: FREENAS-MIB ARC target size of cache in bytes.	SNMP agent	truenas.zfs.arc.c Preprocessing Custom multiplier: `1024` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ARC target size of MRU	MIB: FREENAS-MIB ARC target size of MRU in bytes.	SNMP agent	truenas.zfs.arc.p Preprocessing Custom multiplier: `1024` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ARC cache hit ratio	MIB: FREENAS-MIB ARC cache hit ration percentage.	SNMP agent	truenas.zfs.arc.hit.ratio
TrueNAS CORE: ARC cache miss ratio	MIB: FREENAS-MIB ARC cache miss ration percentage.	SNMP agent	truenas.zfs.arc.miss.ratio
TrueNAS CORE: L2ARC hits	MIB: FREENAS-MIB Hits to the L2 cache per second.	SNMP agent	truenas.zfs.l2arc.hits Preprocessing Change per second
TrueNAS CORE: L2ARC misses	MIB: FREENAS-MIB Misses to the L2 cache per second.	SNMP agent	truenas.zfs.l2arc.misses Preprocessing Change per second
TrueNAS CORE: L2ARC read rate	MIB: FREENAS-MIB Read rate from L2 cache in bytes per second.	SNMP agent	truenas.zfs.l2arc.read Preprocessing Change per second
TrueNAS CORE: L2ARC write rate	MIB: FREENAS-MIB Write rate from L2 cache in bytes per second.	SNMP agent	truenas.zfs.l2arc.write Preprocessing Change per second
TrueNAS CORE: L2ARC size	MIB: FREENAS-MIB L2ARC size in bytes.	SNMP agent	truenas.zfs.l2arc.size Preprocessing Custom multiplier: `1024` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ZIL operations 1 second	MIB: FREENAS-MIB The ops column parsed from the command zilstat 1 1.	SNMP agent	truenas.zfs.zil.ops1
TrueNAS CORE: ZIL operations 5 seconds	MIB: FREENAS-MIB The ops column parsed from the command zilstat 5 1.	SNMP agent	truenas.zfs.zil.ops5
TrueNAS CORE: ZIL operations 10 seconds	MIB: FREENAS-MIB The ops column parsed from the command zilstat 10 1.	SNMP agent	truenas.zfs.zil.ops10

Triggers

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Unavailable by ICMP ping	Last three attempts returned timeout. Please check device connectivity.	`max(/TrueNAS CORE by SNMP/icmpping,#3)=0`	High
TrueNAS CORE: High ICMP ping loss	ICMP packets loss detected.	`min(/TrueNAS CORE by SNMP/icmppingloss,5m)>{$ICMP_LOSS_WARN} and min(/TrueNAS CORE by SNMP/icmppingloss,5m)<100`	Warning	Depends on: TrueNAS CORE: Unavailable by ICMP ping
TrueNAS CORE: High ICMP ping response time	Average ICMP response time is too big.	`avg(/TrueNAS CORE by SNMP/icmppingsec,5m)>{$ICMP_RESPONSE_TIME_WARN}`	Warning	Depends on: TrueNAS CORE: Unavailable by ICMP ping
TrueNAS CORE: System name has changed	The name of the system has changed. Acknowledge to close the problem manually.	`last(/TrueNAS CORE by SNMP/system.name,#1)<>last(/TrueNAS CORE by SNMP/system.name,#2) and length(last(/TrueNAS CORE by SNMP/system.name))>0`	Info	Manual close: Yes
TrueNAS CORE: Host has been restarted	Uptime is less than 10 minutes.	`last(/TrueNAS CORE by SNMP/system.uptime)<10m`	Info	Manual close: Yes
TrueNAS CORE: No SNMP data collection	SNMP is not available for polling. Please check device connectivity and SNMP settings.	`max(/TrueNAS CORE by SNMP/zabbix[host,snmp,available],{$SNMP.TIMEOUT})=0`	Warning	Depends on: TrueNAS CORE: Unavailable by ICMP ping
TrueNAS CORE: Load average is too high	The load average per CPU is too high. The system may be slow to respond.	`min(/TrueNAS CORE by SNMP/system.cpu.load.avg1,5m)/last(/TrueNAS CORE by SNMP/system.cpu.num)>{$LOAD_AVG_PER_CPU.MAX.WARN} and last(/TrueNAS CORE by SNMP/system.cpu.load.avg5)>0 and last(/TrueNAS CORE by SNMP/system.cpu.load.avg15)>0`	Average
TrueNAS CORE: Lack of available memory	The system is running out of memory.	`min(/TrueNAS CORE by SNMP/vm.memory.available,5m)<{$MEMORY.AVAILABLE.MIN} and last(/TrueNAS CORE by SNMP/vm.memory.total)>0`	Average
TrueNAS CORE: High memory utilization	The system is running out of free memory.	`min(/TrueNAS CORE by SNMP/vm.memory.util,5m)>{$MEMORY.UTIL.MAX}`	Average	Depends on: TrueNAS CORE: Lack of available memory
TrueNAS CORE: High swap space usage	If there is no swap configured, this trigger is ignored.	`min(/TrueNAS CORE by SNMP/system.swap.pfree,5m)<{$SWAP.PFREE.MIN.WARN} and last(/TrueNAS CORE by SNMP/system.swap.total)>0`	Warning	Depends on: TrueNAS CORE: Lack of available memory TrueNAS CORE: High memory utilization

LLD rule CPU discovery

Name Description Type Key and additional info

CPU discovery

Name	Description	Type	Key and additional info
CPU discovery	This discovery will create set of per core CPU metrics from UCD-SNMP-MIB, using {#CPU.COUNT} in preprocessing. That's the only reason why LLD is used.	Dependent item	cpu.discovery Preprocessing JavaScript: `The text is too long. Please see the template.`

This discovery will create set of per core CPU metrics from UCD-SNMP-MIB, using {#CPU.COUNT} in preprocessing. That's the only reason why LLD is used.

Dependent item

cpu.discovery

Preprocessing

JavaScript: The text is too long. Please see the template.

Item prototypes for CPU discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: CPU idle time	MIB: UCD-SNMP-MIB The time the CPU has spent doing nothing.	SNMP agent	system.cpu.idle[{#SNMPINDEX}]
TrueNAS CORE: CPU system time	MIB: UCD-SNMP-MIB The time the CPU has spent running the kernel and its processes.	SNMP agent	system.cpu.system[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU user time	MIB: UCD-SNMP-MIB The time the CPU has spent running users' processes that are not niced.	SNMP agent	system.cpu.user[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU nice time	MIB: UCD-SNMP-MIB The time the CPU has spent running users' processes that have been niced.	SNMP agent	system.cpu.nice[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU iowait time	MIB: UCD-SNMP-MIB The amount of time the CPU has been waiting for I/O to complete.	SNMP agent	system.cpu.iowait[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU interrupt time	MIB: UCD-SNMP-MIB The amount of time the CPU has been servicing hardware interrupts.	SNMP agent	system.cpu.interrupt[{#SNMPINDEX}] Preprocessing Change per second JavaScript: `The text is too long. Please see the template.`
TrueNAS CORE: CPU utilization	The CPU utilization expressed in %.	Dependent item	system.cpu.util[{#SNMPINDEX}] Preprocessing JavaScript: `//Calculate utilization<br>return (100 - value)`

Trigger prototypes for CPU discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: High CPU utilization	The CPU utilization is too high. The system might be slow to respond.	`min(/TrueNAS CORE by SNMP/system.cpu.util[{#SNMPINDEX}],5m)>{$CPU.UTIL.CRIT}`	Warning	Depends on: TrueNAS CORE: Load average is too high

LLD rule Block devices discovery

Name	Description	Type	Key and additional info
Block devices discovery	Block devices are discovered from UCD-DISKIO-MIB::diskIOTable (http://net-snmp.sourceforge.net/docs/mibs/ucdDiskIOMIB.html#diskIOTable).	SNMP agent	vfs.dev.discovery

Item prototypes for Block devices discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: [{#DEVNAME}]: Disk read rate	MIB: UCD-DISKIO-MIB The number of read accesses from this device since boot.	SNMP agent	vfs.dev.read.rate[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: [{#DEVNAME}]: Disk write rate	MIB: UCD-DISKIO-MIB The number of write accesses from this device since boot.	SNMP agent	vfs.dev.write.rate[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: [{#DEVNAME}]: Disk utilization	MIB: UCD-DISKIO-MIB The 1 minute average load of disk (%).	SNMP agent	vfs.dev.util[{#SNMPINDEX}]

Name

Description

Type

Key and additional info

TrueNAS CORE: [{#DEVNAME}]: Disk read rate

MIB: UCD-DISKIO-MIB

The number of read accesses from this device since boot.

SNMP agent

vfs.dev.read.rate[{#SNMPINDEX}]

Preprocessing

Change per second

TrueNAS CORE: [{#DEVNAME}]: Disk write rate

MIB: UCD-DISKIO-MIB

The number of write accesses from this device since boot.

SNMP agent

vfs.dev.write.rate[{#SNMPINDEX}]

Preprocessing

Change per second

TrueNAS CORE: [{#DEVNAME}]: Disk utilization

MIB: UCD-DISKIO-MIB

The 1 minute average load of disk (%).

SNMP agent

vfs.dev.util[{#SNMPINDEX}]

LLD rule Network interfaces discovery

Name	Description	Type	Key and additional info
Network interfaces discovery	Discovering interfaces from IF-MIB.	SNMP agent	net.if.discovery

Item prototypes for Network interfaces discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Inbound packets discarded	MIB: IF-MIB The number of inbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.in.discards[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Inbound packets with errors	MIB: IF-MIB For packet-oriented interfaces, the number of inbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. For character-oriented or fixed-length interfaces, the number of inbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.in.errors[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Bits received	MIB: IF-MIB The total number of octets received on the interface, including framing characters. This object is a 64-bit version of ifInOctets. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.in[{#SNMPINDEX}] Preprocessing Change per second Custom multiplier: `8`
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Outbound packets discarded	MIB: IF-MIB The number of outbound packets which were chosen to be discarded even though no errors had been detected to prevent their being deliverable to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.out.discards[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Outbound packets with errors	MIB: IF-MIB For packet-oriented interfaces, the number of outbound packets that contained errors preventing them from being deliverable to a higher-layer protocol. For character-oriented or fixed-length interfaces, the number of outbound transmission units that contained errors preventing them from being deliverable to a higher-layer protocol. Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.out.errors[{#SNMPINDEX}] Preprocessing Change per second
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Bits sent	MIB: IF-MIB The total number of octets transmitted out of the interface, including framing characters. This object is a 64-bit version of ifOutOctets.Discontinuities in the value of this counter can occur at re-initialization of the management system, and at other times as indicated by the value of ifCounterDiscontinuityTime.	SNMP agent	net.if.out[{#SNMPINDEX}] Preprocessing Change per second Custom multiplier: `8`
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Speed	MIB: IF-MIB An estimate of the interface's current bandwidth in units of 1,000,000 bits per second. If this object reports a value of `n' then the speed of the interface is somewhere in the range of` n-500,000' to`n+499,999'. For interfaces which do not vary in bandwidth or for those where no accurate estimation can be made, this object should contain the nominal bandwidth. For a sub-layer which has no concept of bandwidth, this object should be zero.	SNMP agent	net.if.speed[{#SNMPINDEX}] Preprocessing Custom multiplier: `1000000` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Operational status	MIB: IF-MIB The current operational state of the interface. - The testing(3) state indicates that no operational packet scan be passed - If ifAdminStatus is down(2) then ifOperStatus should be down(2) - If ifAdminStatus is changed to up(1) then ifOperStatus should change to up(1) if the interface is ready to transmit and receive network traffic - It should change todormant(5) if the interface is waiting for external actions (such as a serial line waiting for an incoming connection) - It should remain in the down(2) state if and only if there is a fault that prevents it from going to the up(1) state - It should remain in the notPresent(6) state if the interface has missing(typically, hardware) components.	SNMP agent	net.if.status[{#SNMPINDEX}] Preprocessing Discard unchanged with heartbeat: `6h`
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Interface type	MIB: IF-MIB The type of interface. Additional values for ifType are assigned by the Internet Assigned Numbers Authority (IANA), through updating the syntax of the IANAifType textual convention.	SNMP agent	net.if.type[{#SNMPINDEX}] Preprocessing Discard unchanged with heartbeat: `6h`

Trigger prototypes for Network interfaces discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: High input error rate	It recovers when it is below 80% of the `{$IF.ERRORS.WARN:"{#IFNAME}"}` threshold.	`min(/TrueNAS CORE by SNMP/net.if.in.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}`	Warning	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: High inbound bandwidth usage	The utilization of the network interface is close to its estimated maximum bandwidth.	`(avg(/TrueNAS CORE by SNMP/net.if.in[{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])) and last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])>0`	Warning	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: High output error rate	It recovers when it is below 80% of the `{$IF.ERRORS.WARN:"{#IFNAME}"}` threshold.	`min(/TrueNAS CORE by SNMP/net.if.out.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"}`	Warning	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: High outbound bandwidth usage	The utilization of the network interface is close to its estimated maximum bandwidth.	`(avg(/TrueNAS CORE by SNMP/net.if.out[{#SNMPINDEX}],15m)>({$IF.UTIL.MAX:"{#IFNAME}"}/100)*last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])) and last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])>0`	Warning	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Ethernet has changed to lower speed than it was before	This Ethernet connection has transitioned down from its known maximum speed. This might be a sign of autonegotiation issues. Acknowledge to close the problem manually.	change(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])<0 and last(/TrueNAS CORE by SNMP/net.if.speed[{#SNMPINDEX}])>0 and ( last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=6 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=7 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=11 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=62 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=69 or last(/TrueNAS CORE by SNMP/net.if.type[{#SNMPINDEX}])=117 ) and (last(/TrueNAS CORE by SNMP/net.if.status[{#SNMPINDEX}])<>2)	Info	Depends on: TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down	This trigger expression works as follows: 1. It can be triggered if the operations status is down. 2. `{$IFCONTROL:"{#IFNAME}"}=1` - a user can redefine context macro to value - 0. That marks this interface as not important. No new trigger will be fired if this interface is down.	`{$IFCONTROL:"{#IFNAME}"}=1 and (last(/TrueNAS CORE by SNMP/net.if.status[{#SNMPINDEX}])=2)`	Average

LLD rule ZFS pools discovery

Name Description Type Key and additional info

ZFS pools discovery

Name	Description	Type	Key and additional info
ZFS pools discovery	ZFS pools discovery from FREENAS-MIB.	SNMP agent	truenas.zfs.pools.discovery Preprocessing Discard unchanged with heartbeat: `6h`

ZFS pools discovery from FREENAS-MIB.

SNMP agent

truenas.zfs.pools.discovery

Preprocessing

Discard unchanged with heartbeat: 6h

Item prototypes for ZFS pools discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: Pool [{#POOLNAME}]: Total space	MIB: FREENAS-MIB The size of the storage pool in bytes.	SNMP agent	truenas.zpool.size.total[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: Pool [{#POOLNAME}]: Used space	MIB: FREENAS-MIB The used size of the storage pool in bytes.	SNMP agent	truenas.zpool.used[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}`
TrueNAS CORE: Pool [{#POOLNAME}]: Available space	MIB: FREENAS-MIB The available size of the storage pool in bytes.	SNMP agent	truenas.zpool.avail[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}`
TrueNAS CORE: Pool [{#POOLNAME}]: Usage in %	The used size of the storage pool in %.	Calculated	truenas.zpool.pused[{#POOLNAME}]
TrueNAS CORE: Pool [{#POOLNAME}]: Health	MIB: FREENAS-MIB The current health of the containing pool, as reported by zpool status.	SNMP agent	truenas.zpool.health[{#POOLNAME}] Preprocessing Discard unchanged with heartbeat: `1h`
TrueNAS CORE: Pool [{#POOLNAME}]: Read operations rate	MIB: FREENAS-MIB The number of read I/O operations sent to the pool or device, including metadata requests (averaged since system booted).	SNMP agent	truenas.zpool.read.ops[{#POOLNAME}] Preprocessing Change per second
TrueNAS CORE: Pool [{#POOLNAME}]: Write operations rate	MIB: FREENAS-MIB The number of write I/O operations sent to the pool or device (averaged since system booted).	SNMP agent	truenas.zpool.write.ops[{#POOLNAME}] Preprocessing Change per second
TrueNAS CORE: Pool [{#POOLNAME}]: Read rate	MIB: FREENAS-MIB The bandwidth of all read operations (including metadata), expressed as units per second (averaged since system booted).	SNMP agent	truenas.zpool.read.bytes[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}` Change per second
TrueNAS CORE: Pool [{#POOLNAME}]: Write rate	MIB: FREENAS-MIB The bandwidth of all write operations, expressed as units per second (averaged since system booted).	SNMP agent	truenas.zpool.write.bytes[{#POOLNAME}] Preprocessing Custom multiplier: `{#POOL_ALLOC_UNITS}` Change per second

Trigger prototypes for ZFS pools discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Pool [{#POOLNAME}]: Very high space usage	Two conditions should match: 1. The first condition - utilization of the space should be above `{$ZPOOL.PUSED.MAX.CRIT:"{#POOLNAME}"}%.` 2. The second condition - the pool free space is less than `{$ZPOOL.FREE.MIN.CRIT:"{#POOLNAME}"}`.	`min(/TrueNAS CORE by SNMP/truenas.zpool.pused[{#POOLNAME}],5m) > {$ZPOOL.PUSED.MAX.CRIT:"{#POOLNAME}"} and last(/TrueNAS CORE by SNMP/truenas.zpool.avail[{#POOLNAME}]) < {$ZPOOL.FREE.MIN.CRIT:"{#POOLNAME}"}`	Average
TrueNAS CORE: Pool [{#POOLNAME}]: High space usage	Two conditions should match: 1. The first condition - utilization of the space should be above `{$ZPOOL.PUSED.MAX.WARN:"{#POOLNAME}"}%.` 2. The second condition - the pool free space is less than `{$ZPOOL.FREE.MIN.WARN:"{#POOLNAME}"}`.	`min(/TrueNAS CORE by SNMP/truenas.zpool.pused[{#POOLNAME}],5m) > {$ZPOOL.PUSED.MAX.WARN:"{#POOLNAME}"} and last(/TrueNAS CORE by SNMP/truenas.zpool.avail[{#POOLNAME}]) < {$ZPOOL.FREE.MIN.WARN:"{#POOLNAME}"}`	Warning	Depends on: TrueNAS CORE: Pool [{#POOLNAME}]: Very high space usage
TrueNAS CORE: Pool [{#POOLNAME}]: Status is not online	Please check pool status.	`last(/TrueNAS CORE by SNMP/truenas.zpool.health[{#POOLNAME}]) <> 0`	Average

LLD rule ZFS datasets discovery

Name Description Type Key and additional info

ZFS datasets discovery

Name	Description	Type	Key and additional info
ZFS datasets discovery	ZFS datasets discovery from FREENAS-MIB.	SNMP agent	truenas.zfs.dataset.discovery Preprocessing Discard unchanged with heartbeat: `6h`

ZFS datasets discovery from FREENAS-MIB.

SNMP agent

truenas.zfs.dataset.discovery

Preprocessing

Discard unchanged with heartbeat: 6h

Item prototypes for ZFS datasets discovery

Name	Description	Type	Key and additional info
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Total space	MIB: FREENAS-MIB The size of the dataset in bytes.	SNMP agent	truenas.dataset.size.total[{#DATASET_NAME}] Preprocessing Custom multiplier: `{#DATASET_ALLOC_UNITS}` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Used space	MIB: FREENAS-MIB The used size of the dataset in bytes.	SNMP agent	truenas.dataset.used[{#DATASET_NAME}] Preprocessing Custom multiplier: `{#DATASET_ALLOC_UNITS}`
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Available space	MIB: FREENAS-MIB The available size of the dataset in bytes.	SNMP agent	truenas.dataset.avail[{#DATASET_NAME}] Preprocessing Custom multiplier: `{#DATASET_ALLOC_UNITS}`
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Usage in %	The used size of the dataset in %.	Calculated	truenas.dataset.pused[{#DATASET_NAME}]

Trigger prototypes for ZFS datasets discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Dataset [{#DATASET_NAME}]: Very high space usage	Two conditions should match: 1. The first condition - utilization of the space should be above `{$DATASET.PUSED.MAX.CRIT:"{#DATASET_NAME}"}%.` 2. The second condition - the dataset free space is less than `{$DATASET.FREE.MIN.CRIT:"{#POOLNAME}"}`.	`min(/TrueNAS CORE by SNMP/truenas.dataset.pused[{#DATASET_NAME}],5m) > {$DATASET.PUSED.MAX.CRIT:"{#DATASET_NAME}"} and last(/TrueNAS CORE by SNMP/truenas.dataset.avail[{#DATASET_NAME}]) < {$DATASET.FREE.MIN.CRIT:"{#POOLNAME}"}`	Average
TrueNAS CORE: Dataset [{#DATASET_NAME}]: High space usage	Two conditions should match: 1. The first condition - utilization of the space should be above `{$DATASET.PUSED.MAX.WARN:"{#DATASET_NAME}"}%.` 2. The second condition - the dataset free space is less than `{$DATASET.FREE.MIN.WARN:"{#POOLNAME}"}`.	`min(/TrueNAS CORE by SNMP/truenas.dataset.pused[{#DATASET_NAME}],5m) > {$DATASET.PUSED.MAX.WARN:"{#DATASET_NAME}"} and last(/TrueNAS CORE by SNMP/truenas.dataset.avail[{#DATASET_NAME}]) < {$DATASET.FREE.MIN.WARN:"{#POOLNAME}"}`	Warning	Depends on: TrueNAS CORE: Dataset [{#DATASET_NAME}]: Very high space usage

LLD rule ZFS volumes discovery

Name Description Type Key and additional info

ZFS volumes discovery

Name	Description	Type	Key and additional info
ZFS volumes discovery	ZFS volumes discovery from FREENAS-MIB.	SNMP agent	truenas.zfs.zvols.discovery Preprocessing Discard unchanged with heartbeat: `6h`

ZFS volumes discovery from FREENAS-MIB.

SNMP agent

truenas.zfs.zvols.discovery

Preprocessing

Discard unchanged with heartbeat: 6h

Item prototypes for ZFS volumes discovery

Name Description Type Key and additional info

TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Total space

Name	Description	Type	Key and additional info
TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Total space	MIB: FREENAS-MIB The size of the ZFS volume in bytes.	SNMP agent	truenas.zvol.size.total[{#ZVOL_NAME}] Preprocessing Custom multiplier: `{#ZVOL_ALLOC_UNITS}` Discard unchanged with heartbeat: `1h`
TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Used space	MIB: FREENAS-MIB The used size of the ZFS volume in bytes.	SNMP agent	truenas.zvol.used[{#ZVOL_NAME}] Preprocessing Custom multiplier: `{#ZVOL_ALLOC_UNITS}`
TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Available space	MIB: FREENAS-MIB The available of the ZFS volume in bytes.	SNMP agent	truenas.zvol.avail[{#ZVOL_NAME}] Preprocessing Custom multiplier: `{#ZVOL_ALLOC_UNITS}`

MIB: FREENAS-MIB

The size of the ZFS volume in bytes.

SNMP agent

truenas.zvol.size.total[{#ZVOL_NAME}]

Preprocessing

Custom multiplier: {#ZVOL_ALLOC_UNITS}
Discard unchanged with heartbeat: 1h

TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Used space

MIB: FREENAS-MIB

The used size of the ZFS volume in bytes.

SNMP agent

truenas.zvol.used[{#ZVOL_NAME}]

Preprocessing

Custom multiplier: {#ZVOL_ALLOC_UNITS}

TrueNAS CORE: ZFS volume [{#ZVOL_NAME}]: Available space

MIB: FREENAS-MIB

The available of the ZFS volume in bytes.

SNMP agent

truenas.zvol.avail[{#ZVOL_NAME}]

Preprocessing

Custom multiplier: {#ZVOL_ALLOC_UNITS}

LLD rule Disks temperature discovery

Name Description Type Key and additional info

Disks temperature discovery

Name	Description	Type	Key and additional info
Disks temperature discovery	Disks temperature discovery from FREENAS-MIB.	SNMP agent	truenas.disk.temp.discovery Preprocessing Discard unchanged with heartbeat: `6h`

Disks temperature discovery from FREENAS-MIB.

SNMP agent

truenas.disk.temp.discovery

Preprocessing

Discard unchanged with heartbeat: 6h

Item prototypes for Disks temperature discovery

Name Description Type Key and additional info

TrueNAS CORE: Disk [{#DISK_NAME}]: Temperature

Name	Description	Type	Key and additional info
TrueNAS CORE: Disk [{#DISK_NAME}]: Temperature	MIB: FREENAS-MIB The temperature of this HDD in mC.	SNMP agent	truenas.disk.temp[{#DISK_NAME}] Preprocessing Custom multiplier: `0.001` Discard unchanged with heartbeat: `1h`

MIB: FREENAS-MIB

The temperature of this HDD in mC.

SNMP agent

truenas.disk.temp[{#DISK_NAME}]

Preprocessing

Custom multiplier: 0.001
Discard unchanged with heartbeat: 1h

Trigger prototypes for Disks temperature discovery

Name	Description	Expression	Severity	Dependencies and additional info
TrueNAS CORE: Disk [{#DISK_NAME}]: Average disk temperature is too high	Disk temperature is high.	`avg(/TrueNAS CORE by SNMP/truenas.disk.temp[{#DISK_NAME}],5m) > {$TEMPERATURE.MAX.CRIT:"{#DISK_NAME}"}`	Average
TrueNAS CORE: Disk [{#DISK_NAME}]: Average disk temperature is too high	Disk temperature is high.	`avg(/TrueNAS CORE by SNMP/truenas.disk.temp[{#DISK_NAME}],5m) > {$TEMPERATURE.MAX.WARN:"{#DISK_NAME}"}`	Warning

Feedback

Please report any issues with the template at https://support.zabbix.com

You can also provide feedback, discuss the template, or ask for help at ZABBIX forums

Link	Source	Compatibility	Type, Technology	Created Updated	Rating
SNMP FreeNAS This template will allow you to easily monitor and graph a TrueNAS/FreeNAS server including ZFS ARC stats. This requires TrueNAS/FreeNAS 9.3 or above.You will also need to create a Zabbix macro named {$SNMP_COMMUNITY} which contains your SNMP community name. The FREENAS-MIB.txt will also need to be uploaded ... template_truenas_freenas_snmp_w_zfs_stats	GitHub Community Templates	5.0+

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TrueNAS CORE by SNMP

Overview

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LLD rule CPU discovery

Item prototypes for CPU discovery

Trigger prototypes for CPU discovery

LLD rule Block devices discovery

Item prototypes for Block devices discovery

LLD rule Network interfaces discovery

Item prototypes for Network interfaces discovery

Trigger prototypes for Network interfaces discovery

LLD rule ZFS pools discovery

Item prototypes for ZFS pools discovery

Trigger prototypes for ZFS pools discovery

LLD rule ZFS datasets discovery

Item prototypes for ZFS datasets discovery

Trigger prototypes for ZFS datasets discovery

LLD rule ZFS volumes discovery

Item prototypes for ZFS volumes discovery

LLD rule Disks temperature discovery

Item prototypes for Disks temperature discovery

Trigger prototypes for Disks temperature discovery

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TrueNAS by SNMP

Overview

Setup

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Discovery rules

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Triggers

Feedback

TrueNAS CORE by SNMP

Overview

Requirements

Tested versions

Configuration

Setup

Macros used

Items

Triggers

LLD rule CPU discovery

Item prototypes for CPU discovery

Trigger prototypes for CPU discovery

LLD rule Block devices discovery

Item prototypes for Block devices discovery

LLD rule Network interfaces discovery

Item prototypes for Network interfaces discovery

Trigger prototypes for Network interfaces discovery

LLD rule ZFS pools discovery

Item prototypes for ZFS pools discovery

Trigger prototypes for ZFS pools discovery

LLD rule ZFS datasets discovery

Item prototypes for ZFS datasets discovery

Trigger prototypes for ZFS datasets discovery

LLD rule ZFS volumes discovery

Item prototypes for ZFS volumes discovery

LLD rule Disks temperature discovery

Item prototypes for Disks temperature discovery

Trigger prototypes for Disks temperature discovery

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