TrueNAS

Available solutions




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 by SNMP

Overview

Template for monitoring TrueNAS by SNMP

Requirements

Zabbix version: 6.4 and higher.

Tested versions

This template has been tested on:

  • TrueNAS Core 12.0-U8

Configuration

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

Setup

  1. Import template into Zabbix
  2. Enable SNMP daemon at Services in TrueNAS web interface https://www.truenas.com/docs/core/services/snmp
  3. Link 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: ICMP ping

Host accessibility by ICMP.

0 - ICMP ping fails.

1 - ICMP ping successful.

 Simple check icmpping
TrueNAS: ICMP loss

Percentage of lost packets.

 Simple check icmppingloss
TrueNAS: ICMP response time

ICMP ping response time (in seconds).

 Simple check icmppingsec
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 agent system.contact

Preprocessing

  • Discard unchanged with heartbeat: 6h
TrueNAS: System description

MIB: SNMPv2-MIB

System description of the host.

 SNMP agent system.descr

Preprocessing

  • Discard unchanged with heartbeat: 6h
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 agent system.location

Preprocessing

  • Discard unchanged with heartbeat: 6h
TrueNAS: System name

MIB: SNMPv2-MIB

The host name of the system.

 SNMP agent system.name

Preprocessing

  • Discard unchanged with heartbeat: 6h
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 agent system.objectid

Preprocessing

  • Discard unchanged with heartbeat: 6h
TrueNAS: Uptime

MIB: SNMPv2-MIB

The system uptime expressed in the following format: "N days, hh:mm:ss".

 SNMP agent system.uptime

Preprocessing

  • Custom multiplier: 0.01
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

 Zabbix internal zabbix[host,snmp,available]
TrueNAS: Interrupts per second

MIB: UCD-SNMP-MIB

Number of interrupts processed.

 SNMP agent system.cpu.intr

Preprocessing

  • Change per second
TrueNAS: Context switches per second

MIB: UCD-SNMP-MIB

Number of context switches.

 SNMP agent system.cpu.switches

Preprocessing

  • Change per second
TrueNAS: Load average (1m avg)

MIB: UCD-SNMP-MIB

The 1 minute load averages.

 SNMP agent system.cpu.load.avg1
TrueNAS: Load average (5m avg)

MIB: UCD-SNMP-MIB

The 5 minutes load averages.

 SNMP agent system.cpu.load.avg5
TrueNAS: Load average (15m avg)

MIB: UCD-SNMP-MIB

The 15 minutes load averages.

 SNMP agent system.cpu.load.avg15
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 agent system.cpu.num

Preprocessing

  • JavaScript: The text is too long. Please see the template.
TrueNAS: 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: 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: 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: Total memory

MIB: UCD-SNMP-MIB

The total memory expressed in bytes.

 SNMP agent vm.memory.total

Preprocessing

  • Custom multiplier: 1024
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
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
TrueNAS: 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: 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: Free swap space in %

The free space of the swap volume/file expressed in %.

 Calculated system.swap.pfree
TrueNAS: 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: ARC metadata size

MIB: FREENAS-MIB

ARC metadata size used in bytes.

 SNMP agent truenas.zfs.arc.meta

Preprocessing

  • Custom multiplier: 1024
TrueNAS: ARC data size

MIB: FREENAS-MIB

ARC data size used in bytes.

 SNMP agent truenas.zfs.arc.data

Preprocessing

  • Custom multiplier: 1024
TrueNAS: 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: 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: 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: 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: ARC cache hit ratio

MIB: FREENAS-MIB

ARC cache hit ration percentage.

 SNMP agent truenas.zfs.arc.hit.ratio
TrueNAS: ARC cache miss ratio

MIB: FREENAS-MIB

ARC cache miss ration percentage.

 SNMP agent truenas.zfs.arc.miss.ratio
TrueNAS: L2ARC hits

MIB: FREENAS-MIB

Hits to the L2 cache per second.

 SNMP agent truenas.zfs.l2arc.hits

Preprocessing

  • Change per second
TrueNAS: L2ARC misses

MIB: FREENAS-MIB

Misses to the L2 cache per second.

 SNMP agent truenas.zfs.l2arc.misses

Preprocessing

  • Change per second
TrueNAS: 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: 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: 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: ZIL operations 1 second

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 1 1.

 SNMP agent truenas.zfs.zil.ops1
TrueNAS: ZIL operations 5 seconds

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 5 1.

 SNMP agent truenas.zfs.zil.ops5
TrueNAS: 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: 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: System name has changed

The name of the system has changed. Acknowledge 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: Host has been restarted

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: Load average is too high

The load average per CPU is too high. The 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: 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

If there is no swap configured, this trigger is ignored.

 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: Lack of available memory
  • TrueNAS: High memory utilization

LLD rule 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.

Item prototypes for CPU discovery

Name Description Type Key and additional info
TrueNAS: CPU idle time

MIB: UCD-SNMP-MIB

The time the CPU has spent doing nothing.

 SNMP agent system.cpu.idle[{#SNMPINDEX}]
TrueNAS: 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: 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: 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: 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: 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: 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: 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

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: [{#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: [{#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: [{#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: 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: 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: 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: 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: 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: 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: 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: 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: 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: Interface [{#IFNAME}({#IFALIAS})]: High input error rate

It recovers when it is below 80% of the {$IF.ERRORS.WARN:"{#IFNAME}"} threshold.

 min(/TrueNAS by SNMP/net.if.in.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"} Warning Depends on:
  • TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: High inbound bandwidth usage

The utilization of the network interface 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 Warning Depends on:
  • TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: High output error rate

It recovers when it is below 80% of the {$IF.ERRORS.WARN:"{#IFNAME}"} threshold.

 min(/TrueNAS by SNMP/net.if.out.errors[{#SNMPINDEX}],5m)>{$IF.ERRORS.WARN:"{#IFNAME}"} Warning Depends on:
  • TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: High outbound bandwidth usage

The utilization of the network interface 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 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. Acknowledge to close the problem manually.

 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) Info Depends on:
  • TrueNAS: Interface [{#IFNAME}({#IFALIAS})]: Link down
TrueNAS: 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 by SNMP/net.if.status[{#SNMPINDEX}])=2) Average

LLD rule 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

Item prototypes for ZFS pools discovery

Name Description Type Key and additional info
TrueNAS: 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: 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: 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: Pool [{#POOLNAME}]: Usage in %

The used size of the storage pool in %.

 Calculated truenas.zpool.pused[{#POOLNAME}]
TrueNAS: 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: 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: 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: 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: 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: 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 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: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 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

LLD rule 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

Item prototypes for ZFS datasets discovery

Name Description Type Key and additional info
TrueNAS: 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: 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: 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: 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: 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 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: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 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

LLD rule 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

Item prototypes for ZFS volumes discovery

Name Description Type Key and additional info
TrueNAS: 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: 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: 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

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: 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

Trigger prototypes for Disks temperature discovery

Name Description Expression Severity Dependencies and additional info
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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