Threshold of CPU utilization for warning trigger in %.

Threshold of ICMP packets loss for warning trigger in %.

Threshold of average ICMP response time for warning trigger in seconds.

Threshold of error packets rate for warning trigger. Can be used with interface name as context.

Threshold of interface bandwidth utilization for warning trigger in %. Can be used with interface name as context.

Macro for operational state of the interface for link down trigger. Can be used with interface name as context.

Load per CPU considered sustainable. Tune if needed.

Threshold of available memory for trigger in bytes.

Threshold of memory utilization for trigger in %

This macro is used in filters of network interfaces discovery rule.

Ignore down(2) administrative status

This macro is used in filters of network interfaces discovery rule.

This macro is used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

Ignore notPresent(6)

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

The time interval for SNMP availability trigger.

Threshold of free swap space for warning trigger in %.

This macro is used in block devices discovery. Can be overridden on the host or linked template level

This macro is used in block devices discovery. Can be overridden on the host or linked template level

This macro is used in datasets discovery. Can be overridden on the host or linked template level

This macro is used in datasets discovery. Can be overridden on the host or linked template level

Threshold of used pool space for warning trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used pool space for average severity trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used dataset space for warning trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used dataset space for average severity trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Host accessibility by ICMP.

0 - ICMP ping fails.

1 - ICMP ping successful.

Percentage of lost packets.

ICMP ping response time (in seconds).

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

System description of the host.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

The physical location of this node. If the location is unknown, the value is the zero-length string.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

The host name of the system.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Custom multiplier: 0.01

The item is used to collect all SNMP traps unmatched by other snmptrap items.

Availability of SNMP checks on the host. The value of this item corresponds to availability icons in the host list.

Possible values:

0 - not available

1 - available

2 - unknown

MIB: UCD-SNMP-MIB

Number of interrupts processed.

Preprocessing

• Change per second

MIB: UCD-SNMP-MIB

Number of context switches.

Preprocessing

• Change per second

MIB: UCD-SNMP-MIB

The 1 minute load averages.

MIB: UCD-SNMP-MIB

The 5 minutes load averages.

MIB: UCD-SNMP-MIB

The 15 minutes load averages.

MIB: HOST-RESOURCES-MIB

Count the number of CPU cores by counting number of cores discovered in hrProcessorTable using LLD.

Preprocessing

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

MIB: UCD-SNMP-MIB

The amount of real/physical memory currently unused or available.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total amount of real or virtual memory currently allocated for use as memory buffers.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total amount of real or virtual memory currently allocated for use as cached memory.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total memory expressed in bytes.

Preprocessing

• Custom multiplier: 1024

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.

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.

MIB: UCD-SNMP-MIB

The total amount of swap space configured for this host.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The amount of swap space currently unused or available.

Preprocessing

• Custom multiplier: 1024

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

Preprocessing

• Check for not supported value: any error

  ⛔️Custom on fail: Set value to: 100

MIB: FREENAS-MIB

ARC size in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC metadata size used in bytes.

Preprocessing

• Custom multiplier: 1024

MIB: FREENAS-MIB

ARC data size used in bytes.

Preprocessing

• Custom multiplier: 1024

MIB: FREENAS-MIB

Total amount of cache hits in the ARC per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Total amount of cache misses in the ARC per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

ARC target size of cache in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC target size of MRU in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC cache hit ration percentage.

MIB: FREENAS-MIB

ARC cache miss ration percentage.

MIB: FREENAS-MIB

Hits to the L2 cache per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Misses to the L2 cache per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Read rate from L2 cache in bytes per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Write rate from L2 cache in bytes per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

L2ARC size in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 1 1.

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 5 1.

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 10 1.

Last three attempts returned timeout. Please check device connectivity.

ICMP packets loss detected.

• TrueNAS CORE: Unavailable by ICMP ping

Average ICMP response time is too big.

• TrueNAS CORE: Unavailable by ICMP ping

The name of the system has changed. Acknowledge to close the problem manually.

Uptime is less than 10 minutes.

SNMP is not available for polling. Please check device connectivity and SNMP settings.

• TrueNAS CORE: Unavailable by ICMP ping

The load average per CPU is too high. The system may be slow to respond.

The system is running out of memory.

The system is running out of free memory.

• TrueNAS CORE: Lack of available memory

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

• TrueNAS CORE: Lack of available memory
• TrueNAS CORE: High memory utilization

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.

Preprocessing

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

MIB: UCD-SNMP-MIB

The time the CPU has spent doing nothing.

MIB: UCD-SNMP-MIB

The time the CPU has spent running the kernel and its processes.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The time the CPU has spent running users' processes that are not niced.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The time the CPU has spent running users' processes that have been niced.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The amount of time the CPU has been waiting for I/O to complete.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The amount of time the CPU has been servicing hardware interrupts.

Preprocessing

• Change per second

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

The CPU utilization expressed in %.

Preprocessing

• JavaScript: //Calculate utilization<br>return (100 - value)

The CPU utilization is too high. The system might be slow to respond.

• TrueNAS CORE: Load average is too high

Block devices are discovered from UCD-DISKIO-MIB::diskIOTable (http://net-snmp.sourceforge.net/docs/mibs/ucdDiskIOMIB.html#diskIOTable).

MIB: UCD-DISKIO-MIB

The number of read accesses from this device since boot.

Preprocessing

• Change per second

MIB: UCD-DISKIO-MIB

The number of write accesses from this device since boot.

Preprocessing

• Change per second

MIB: UCD-DISKIO-MIB

The 1 minute average load of disk (%).

Discovering interfaces from IF-MIB.

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

• Custom multiplier: 8

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

• Custom multiplier: 8

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.

Preprocessing

• Custom multiplier: 1000000

• Discard unchanged with heartbeat: 1h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

The utilization of the network interface is close to its estimated maximum bandwidth.

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

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

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

The utilization of the network interface is close to its estimated maximum bandwidth.

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

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.

• 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.

ZFS pools discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

MIB: FREENAS-MIB

The available size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

The used size of the storage pool in %.

MIB: FREENAS-MIB

The current health of the containing pool, as reported by zpool status.

Preprocessing

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The number of read I/O operations sent to the pool or device, including metadata requests (averaged since system booted).

Preprocessing

• Change per second

MIB: FREENAS-MIB

The number of write I/O operations sent to the pool or device (averaged since system booted).

Preprocessing

• Change per second

MIB: FREENAS-MIB

The bandwidth of all read operations (including metadata), expressed as units per second (averaged since system booted).

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Change per second

MIB: FREENAS-MIB

The bandwidth of all write operations, expressed as units per second (averaged since system booted).

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Change per second

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}"}.

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}"}.

• TrueNAS CORE: Pool [{#POOLNAME}]: Very high space usage

Please check pool status.

ZFS datasets discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

MIB: FREENAS-MIB

The available size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

The used size of the dataset in %.

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}"}.

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}"}.

• TrueNAS CORE: Dataset [{#DATASET_NAME}]: Very high space usage

ZFS volumes discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

MIB: FREENAS-MIB

The available of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

Disks temperature discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The temperature of this HDD in mC.

Preprocessing

• Custom multiplier: 0.001

• Discard unchanged with heartbeat: 1h

Disk temperature is high.

Disk temperature is high.

Threshold of CPU utilization for warning trigger in %.

Threshold of ICMP packets loss for warning trigger in %.

Threshold of average ICMP response time for warning trigger in seconds.

Threshold of error packets rate for warning trigger. Can be used with interface name as context.

Threshold of interface bandwidth utilization for warning trigger in %. Can be used with interface name as context.

Macro for operational state of the interface for link down trigger. Can be used with interface name as context.

Load per CPU considered sustainable. Tune if needed.

Threshold of available memory for trigger in bytes.

Threshold of memory utilization for trigger in %

This macro is used in filters of network interfaces discovery rule.

Ignore down(2) administrative status

This macro is used in filters of network interfaces discovery rule.

This macro is used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

Ignore notPresent(6)

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

The time interval for SNMP availability trigger.

Threshold of free swap space for warning trigger in %.

This macro is used in block devices discovery. Can be overridden on the host or linked template level

This macro is used in block devices discovery. Can be overridden on the host or linked template level

This macro is used in datasets discovery. Can be overridden on the host or linked template level

This macro is used in datasets discovery. Can be overridden on the host or linked template level

Threshold of used pool space for warning trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used pool space for average severity trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used dataset space for warning trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used dataset space for average severity trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Host accessibility by ICMP.

0 - ICMP ping fails.

1 - ICMP ping successful.

Percentage of lost packets.

ICMP ping response time (in seconds).

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

System description of the host.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

The physical location of this node. If the location is unknown, the value is the zero-length string.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

The host name of the system.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Custom multiplier: 0.01

The item is used to collect all SNMP traps unmatched by other snmptrap items.

Availability of SNMP checks on the host. The value of this item corresponds to availability icons in the host list.

Possible values:

0 - not available

1 - available

2 - unknown

MIB: UCD-SNMP-MIB

Number of interrupts processed.

Preprocessing

• Change per second

MIB: UCD-SNMP-MIB

Number of context switches.

Preprocessing

• Change per second

MIB: UCD-SNMP-MIB

The 1 minute load averages.

MIB: UCD-SNMP-MIB

The 5 minutes load averages.

MIB: UCD-SNMP-MIB

The 15 minutes load averages.

MIB: HOST-RESOURCES-MIB

Count the number of CPU cores by counting number of cores discovered in hrProcessorTable using LLD.

Preprocessing

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

MIB: UCD-SNMP-MIB

The amount of real/physical memory currently unused or available.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total amount of real or virtual memory currently allocated for use as memory buffers.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total amount of real or virtual memory currently allocated for use as cached memory.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total memory expressed in bytes.

Preprocessing

• Custom multiplier: 1024

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.

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.

MIB: UCD-SNMP-MIB

The total amount of swap space configured for this host.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The amount of swap space currently unused or available.

Preprocessing

• Custom multiplier: 1024

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

Preprocessing

• Check for not supported value: any error

  ⛔️Custom on fail: Set value to: 100

MIB: FREENAS-MIB

ARC size in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC metadata size used in bytes.

Preprocessing

• Custom multiplier: 1024

MIB: FREENAS-MIB

ARC data size used in bytes.

Preprocessing

• Custom multiplier: 1024

MIB: FREENAS-MIB

Total amount of cache hits in the ARC per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Total amount of cache misses in the ARC per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

ARC target size of cache in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC target size of MRU in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC cache hit ration percentage.

MIB: FREENAS-MIB

ARC cache miss ration percentage.

MIB: FREENAS-MIB

Hits to the L2 cache per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Misses to the L2 cache per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Read rate from L2 cache in bytes per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Write rate from L2 cache in bytes per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

L2ARC size in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 1 1.

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 5 1.

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 10 1.

Last three attempts returned timeout. Please check device connectivity.

ICMP packets loss detected.

• TrueNAS CORE: Unavailable by ICMP ping

Average ICMP response time is too big.

• TrueNAS CORE: Unavailable by ICMP ping

The name of the system has changed. Acknowledge to close the problem manually.

Uptime is less than 10 minutes.

SNMP is not available for polling. Please check device connectivity and SNMP settings.

• TrueNAS CORE: Unavailable by ICMP ping

The load average per CPU is too high. The system may be slow to respond.

The system is running out of memory.

The system is running out of free memory.

• TrueNAS CORE: Lack of available memory

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

• TrueNAS CORE: Lack of available memory
• TrueNAS CORE: High memory utilization

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.

Preprocessing

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

MIB: UCD-SNMP-MIB

The time the CPU has spent doing nothing.

MIB: UCD-SNMP-MIB

The time the CPU has spent running the kernel and its processes.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The time the CPU has spent running users' processes that are not niced.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The time the CPU has spent running users' processes that have been niced.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The amount of time the CPU has been waiting for I/O to complete.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The amount of time the CPU has been servicing hardware interrupts.

Preprocessing

• Change per second

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

The CPU utilization expressed in %.

Preprocessing

• JavaScript: //Calculate utilization<br>return (100 - value)

The CPU utilization is too high. The system might be slow to respond.

• TrueNAS CORE: Load average is too high

Block devices are discovered from UCD-DISKIO-MIB::diskIOTable (http://net-snmp.sourceforge.net/docs/mibs/ucdDiskIOMIB.html#diskIOTable).

MIB: UCD-DISKIO-MIB

The number of read accesses from this device since boot.

Preprocessing

• Change per second

MIB: UCD-DISKIO-MIB

The number of write accesses from this device since boot.

Preprocessing

• Change per second

MIB: UCD-DISKIO-MIB

The 1 minute average load of disk (%).

Discovering interfaces from IF-MIB.

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

• Custom multiplier: 8

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

• Custom multiplier: 8

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.

Preprocessing

• Custom multiplier: 1000000

• Discard unchanged with heartbeat: 1h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

The utilization of the network interface is close to its estimated maximum bandwidth.

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

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

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

The utilization of the network interface is close to its estimated maximum bandwidth.

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

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.

• 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.

ZFS pools discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

MIB: FREENAS-MIB

The available size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

The used size of the storage pool in %.

MIB: FREENAS-MIB

The current health of the containing pool, as reported by zpool status.

Preprocessing

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The number of read I/O operations sent to the pool or device, including metadata requests (averaged since system booted).

Preprocessing

• Change per second

MIB: FREENAS-MIB

The number of write I/O operations sent to the pool or device (averaged since system booted).

Preprocessing

• Change per second

MIB: FREENAS-MIB

The bandwidth of all read operations (including metadata), expressed as units per second (averaged since system booted).

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Change per second

MIB: FREENAS-MIB

The bandwidth of all write operations, expressed as units per second (averaged since system booted).

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Change per second

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}"}.

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}"}.

• TrueNAS CORE: Pool [{#POOLNAME}]: Very high space usage

Please check pool status.

ZFS datasets discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

MIB: FREENAS-MIB

The available size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

The used size of the dataset in %.

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}"}.

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}"}.

• TrueNAS CORE: Dataset [{#DATASET_NAME}]: Very high space usage

ZFS volumes discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

MIB: FREENAS-MIB

The available of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

Disks temperature discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The temperature of this HDD in mC.

Preprocessing

• Custom multiplier: 0.001

• Discard unchanged with heartbeat: 1h

Disk temperature is high.

Disk temperature is high.

Threshold of CPU utilization for warning trigger in %.

Threshold of ICMP packets loss for warning trigger in %.

Threshold of average ICMP response time for warning trigger in seconds.

Threshold of error packets rate for warning trigger. Can be used with interface name as context.

Threshold of interface bandwidth utilization for warning trigger in %. Can be used with interface name as context.

Macro for operational state of the interface for link down trigger. Can be used with interface name as context.

Load per CPU considered sustainable. Tune if needed.

Threshold of available memory for trigger in bytes.

Threshold of memory utilization for trigger in %

This macro is used in filters of network interfaces discovery rule.

Ignore down(2) administrative status

This macro is used in filters of network interfaces discovery rule.

This macro is used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

Ignore notPresent(6)

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

The time interval for SNMP availability trigger.

Threshold of free swap space for warning trigger in %.

This macro is used in block devices discovery. Can be overridden on the host or linked template level

This macro is used in block devices discovery. Can be overridden on the host or linked template level

This macro is used in datasets discovery. Can be overridden on the host or linked template level

This macro is used in datasets discovery. Can be overridden on the host or linked template level

Threshold of used pool space for warning trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used pool space for average severity trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used dataset space for warning trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used dataset space for average severity trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Host accessibility by ICMP.

0 - ICMP ping fails.

1 - ICMP ping successful.

Percentage of lost packets.

ICMP ping response time (in seconds).

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

System description of the host.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

The physical location of this node. If the location is unknown, the value is the zero-length string.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: SNMPv2-MIB

The host name of the system.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Custom multiplier: 0.01

The item is used to collect all SNMP traps unmatched by other snmptrap items.

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

MIB: UCD-SNMP-MIB

Number of interrupts processed.

Preprocessing

• Change per second

MIB: UCD-SNMP-MIB

Number of context switches.

Preprocessing

• Change per second

MIB: UCD-SNMP-MIB

The 1 minute load averages.

MIB: UCD-SNMP-MIB

The 5 minutes load averages.

MIB: UCD-SNMP-MIB

The 15 minutes load averages.

MIB: HOST-RESOURCES-MIB

Count the number of CPU cores by counting number of cores discovered in hrProcessorTable using LLD.

Preprocessing

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

MIB: UCD-SNMP-MIB

The amount of real/physical memory currently unused or available.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total amount of real or virtual memory currently allocated for use as memory buffers.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total amount of real or virtual memory currently allocated for use as cached memory.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The total memory expressed in bytes.

Preprocessing

• Custom multiplier: 1024

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.

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.

MIB: UCD-SNMP-MIB

The total amount of swap space configured for this host.

Preprocessing

• Custom multiplier: 1024

MIB: UCD-SNMP-MIB

The amount of swap space currently unused or available.

Preprocessing

• Custom multiplier: 1024

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

Preprocessing

• Check for not supported value

  ⛔️Custom on fail: Set value to: 100

MIB: FREENAS-MIB

ARC size in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC metadata size used in bytes.

Preprocessing

• Custom multiplier: 1024

MIB: FREENAS-MIB

ARC data size used in bytes.

Preprocessing

• Custom multiplier: 1024

MIB: FREENAS-MIB

Total amount of cache hits in the ARC per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Total amount of cache misses in the ARC per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

ARC target size of cache in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC target size of MRU in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

ARC cache hit ration percentage.

MIB: FREENAS-MIB

ARC cache miss ration percentage.

MIB: FREENAS-MIB

Hits to the L2 cache per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Misses to the L2 cache per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Read rate from L2 cache in bytes per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

Write rate from L2 cache in bytes per second.

Preprocessing

• Change per second

MIB: FREENAS-MIB

L2ARC size in bytes.

Preprocessing

• Custom multiplier: 1024

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 1 1.

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 5 1.

MIB: FREENAS-MIB

The ops column parsed from the command zilstat 10 1.

Last three attempts returned timeout. Please check device connectivity.

ICMP packets loss detected.

• TrueNAS CORE: Unavailable by ICMP ping

Average ICMP response time is too big.

• TrueNAS CORE: Unavailable by ICMP ping

The name of the system has changed. Acknowledge to close the problem manually.

Uptime is less than 10 minutes.

SNMP is not available for polling. Please check device connectivity and SNMP settings.

• TrueNAS CORE: Unavailable by ICMP ping

The load average per CPU is too high. The system may be slow to respond.

The system is running out of memory.

The system is running out of free memory.

• TrueNAS CORE: Lack of available memory

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

• TrueNAS CORE: Lack of available memory
• TrueNAS CORE: High memory utilization

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.

Preprocessing

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

MIB: UCD-SNMP-MIB

The time the CPU has spent doing nothing.

MIB: UCD-SNMP-MIB

The time the CPU has spent running the kernel and its processes.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The time the CPU has spent running users' processes that are not niced.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The time the CPU has spent running users' processes that have been niced.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The amount of time the CPU has been waiting for I/O to complete.

Preprocessing

• Change per second

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

MIB: UCD-SNMP-MIB

The amount of time the CPU has been servicing hardware interrupts.

Preprocessing

• Change per second

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

The CPU utilization expressed in %.

Preprocessing

• JavaScript: //Calculate utilization<br>return (100 - value)

The CPU utilization is too high. The system might be slow to respond.

• TrueNAS CORE: Load average is too high

Block devices are discovered from UCD-DISKIO-MIB::diskIOTable (http://net-snmp.sourceforge.net/docs/mibs/ucdDiskIOMIB.html#diskIOTable).

MIB: UCD-DISKIO-MIB

The number of read accesses from this device since boot.

Preprocessing

• Change per second

MIB: UCD-DISKIO-MIB

The number of write accesses from this device since boot.

Preprocessing

• Change per second

MIB: UCD-DISKIO-MIB

The 1 minute average load of disk (%).

Discovering interfaces from IF-MIB.

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

• Custom multiplier: 8

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

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.

Preprocessing

• Change per second

• Custom multiplier: 8

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.

Preprocessing

• Custom multiplier: 1000000

• Discard unchanged with heartbeat: 1h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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.

Preprocessing

• Discard unchanged with heartbeat: 6h

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

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

The utilization of the network interface is close to its estimated maximum bandwidth.

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

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

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

The utilization of the network interface is close to its estimated maximum bandwidth.

• TrueNAS CORE: Interface [{#IFNAME}({#IFALIAS})]: Link down

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.

• 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.

ZFS pools discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

MIB: FREENAS-MIB

The available size of the storage pool in bytes.

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

The used size of the storage pool in %.

MIB: FREENAS-MIB

The current health of the containing pool, as reported by zpool status.

Preprocessing

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The number of read I/O operations sent to the pool or device, including metadata requests (averaged since system booted).

Preprocessing

• Change per second

MIB: FREENAS-MIB

The number of write I/O operations sent to the pool or device (averaged since system booted).

Preprocessing

• Change per second

MIB: FREENAS-MIB

The bandwidth of all read operations (including metadata), expressed as units per second (averaged since system booted).

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Change per second

MIB: FREENAS-MIB

The bandwidth of all write operations, expressed as units per second (averaged since system booted).

Preprocessing

• Custom multiplier: {#POOL_ALLOC_UNITS}

• Change per second

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}"}.

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}"}.

• TrueNAS CORE: Pool [{#POOLNAME}]: Very high space usage

Please check pool status.

ZFS datasets discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

MIB: FREENAS-MIB

The available size of the dataset in bytes.

Preprocessing

• Custom multiplier: {#DATASET_ALLOC_UNITS}

The used size of the dataset in %.

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}"}.

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}"}.

• TrueNAS CORE: Dataset [{#DATASET_NAME}]: Very high space usage

ZFS volumes discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The size of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

• Discard unchanged with heartbeat: 1h

MIB: FREENAS-MIB

The used size of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

MIB: FREENAS-MIB

The available of the ZFS volume in bytes.

Preprocessing

• Custom multiplier: {#ZVOL_ALLOC_UNITS}

Disks temperature discovery from FREENAS-MIB.

Preprocessing

• Discard unchanged with heartbeat: 6h

MIB: FREENAS-MIB

The temperature of this HDD in mC.

Preprocessing

• Custom multiplier: 0.001

• Discard unchanged with heartbeat: 1h

Disk temperature is high.

Disk temperature is high.

Threshold of CPU utilization for warning trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used in datasets discovery. Can be overridden on the host or linked template level

This macro is used in datasets discovery. Can be overridden on the host or linked template level

Threshold of used dataset space for average severity trigger in %.

Threshold of used dataset space for warning trigger in %.

Threshold of ICMP packets loss for warning trigger in %.

Threshold of average ICMP response time for warning trigger in seconds.

Threshold of error packets rate for warning trigger. Can be used with interface name as context.

Threshold of interface bandwidth utilization for warning trigger in %. Can be used with interface name as context.

Macro for operational state of the interface for link down trigger. Can be used with interface name as context.

Load per CPU considered sustainable. Tune if needed.

Threshold of available memory for trigger in bytes.

Threshold of memory utilization for trigger in %

This macro is used in filters of network interfaces discovery rule.

Ignore down(2) administrative status

This macro is used in filters of network interfaces discovery rule.

This macro is used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

Ignore notPresent(6)

This macro used in filters of network interfaces discovery rule.

This macro used in filters of network interfaces discovery rule.

The time interval for SNMP availability trigger.

Threshold of free swap space for warning trigger in %.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used in block devices discovery. Can be overridden on the host or linked template level

This macro is used in block devices discovery. Can be overridden on the host or linked template level

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

This macro is used for trigger expression. It can be overridden on the host or linked on the template level.

Threshold of used pool space for average severity trigger in %.

Threshold of used pool space for warning trigger in %.

Block devices are discovered from UCD-DISKIO-MIB::diskIOTable (http://net-snmp.sourceforge.net/docs/mibs/ucdDiskIOMIB.html#diskIOTable).

Filter:

- {#DEVNAME} MATCHES_REGEX {$VFS.DEV.DEVNAME.MATCHES}

- {#DEVNAME} NOT_MATCHES_REGEX {$VFS.DEV.DEVNAME.NOT_MATCHES}

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.

Preprocessing:

- JAVASCRIPT: The text is too long. Please see the template.

Disks temperature discovery from FREENAS-MIB.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

Discovering interfaces from IF-MIB.

Filter:

- {#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 from FREENAS-MIB.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

Filter:

- {#DATASET_NAME} MATCHES_REGEX {$DATASET.NAME.MATCHES}

- {#DATASET_NAME} NOT_MATCHES_REGEX {$DATASET.NAME.NOT_MATCHES}

ZFS pools discovery from FREENAS-MIB.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

ZFS volumes discovery from FREENAS-MIB.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

MIB: UCD-SNMP-MIB

Number of interrupts processed.

Preprocessing:

- CHANGE_PER_SECOND

MIB: UCD-SNMP-MIB

Number of context switches.

Preprocessing:

- CHANGE_PER_SECOND

MIB: UCD-SNMP-MIB

The 1 minute load averages.

MIB: UCD-SNMP-MIB

The 5 minutes load averages.

MIB: UCD-SNMP-MIB

The 15 minutes load averages.

MIB: HOST-RESOURCES-MIB

Count the number of CPU cores by counting number of cores discovered in hrProcessorTable using LLD.

Preprocessing:

- JAVASCRIPT: //count the number of cores return JSON.parse(value).length;

MIB: UCD-SNMP-MIB

The time the CPU has spent doing nothing.

MIB: UCD-SNMP-MIB

The time the CPU has spent running the kernel and its processes.

Preprocessing:

- CHANGE_PER_SECOND

- JAVASCRIPT: //to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}

MIB: UCD-SNMP-MIB

The time the CPU has spent running users' processes that are not niced.

Preprocessing:

- CHANGE_PER_SECOND

- JAVASCRIPT: //to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}

MIB: UCD-SNMP-MIB

The time the CPU has spent running users' processes that have been niced.

Preprocessing:

- CHANGE_PER_SECOND

- JAVASCRIPT: //to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}

MIB: UCD-SNMP-MIB

The amount of time the CPU has been waiting for I/O to complete.

Preprocessing:

- CHANGE_PER_SECOND

- JAVASCRIPT: //to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}

MIB: UCD-SNMP-MIB

The amount of time the CPU has been servicing hardware interrupts.

Preprocessing:

- CHANGE_PER_SECOND

- JAVASCRIPT: //to get utilization in %, divide by N, where N is number of cores. return value/{#CPU.COUNT}

The CPU utilization expressed in %.

Preprocessing:

- JAVASCRIPT: //Calculate utilization return (100 - value)

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.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

MIB: SNMPv2-MIB

System description of the host.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

MIB: SNMPv2-MIB

The physical location of this node. If the location is unknown, the value is the zero-length string.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

MIB: SNMPv2-MIB

The host name of the system.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

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.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

MIB: UCD-SNMP-MIB

The amount of real/physical memory currently unused or available.

Preprocessing:

- MULTIPLIER: 1024

MIB: UCD-SNMP-MIB

The total amount of real or virtual memory currently allocated for use as memory buffers.

Preprocessing:

- MULTIPLIER: 1024

MIB: UCD-SNMP-MIB

The total amount of real or virtual memory currently allocated for use as cached memory.

Preprocessing:

- MULTIPLIER: 1024

MIB: UCD-SNMP-MIB

The total memory expressed in Bytes.

Preprocessing:

- MULTIPLIER: 1024

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.

Expression:

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.

Expression:

MIB: UCD-SNMP-MIB

The total amount of swap space configured for this host.

Preprocessing:

- MULTIPLIER: 1024

MIB: UCD-SNMP-MIB

The amount of swap space currently unused or available.

Preprocessing:

- MULTIPLIER: 1024

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

Expression:

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.

Preprocessing:

- CHANGE_PER_SECOND: ``

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.

Preprocessing:

- CHANGE_PER_SECOND: ``

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.

Preprocessing:

- CHANGE_PER_SECOND: ``

- MULTIPLIER: 8

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.

Preprocessing:

- CHANGE_PER_SECOND: ``

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.

Preprocessing:

- CHANGE_PER_SECOND: ``

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.

Preprocessing:

- CHANGE_PER_SECOND: ``

- MULTIPLIER: 8

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.

Preprocessing:

- MULTIPLIER: 1000000

- DISCARD_UNCHANGED_HEARTBEAT: 1h

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.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

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.

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 6h

Host accessibility by ICMP.

0 - ICMP ping fails.

1 - ICMP ping successful.

Percentage of lost packets.

ICMP ping response time (in seconds).

MIB: SNMPv2-MIB

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

Preprocessing:

- MULTIPLIER: 0.01

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

MIB: UCD-DISKIO-MIB

The number of read accesses from this device since boot.

Preprocessing:

- CHANGE_PER_SECOND

MIB: UCD-DISKIO-MIB

The number of write accesses from this device since boot.

Preprocessing:

- CHANGE_PER_SECOND

MIB: UCD-DISKIO-MIB

The 1 minute average load of disk (%).

MIB: FREENAS-MIB

ARC size in bytes.

Preprocessing:

- MULTIPLIER: 1024

- DISCARD_UNCHANGED_HEARTBEAT: 1h

MIB: FREENAS-MIB

ARC metadata size used in bytes.

Preprocessing:

- MULTIPLIER: 1024

MIB: FREENAS-MIB

ARC data size used in bytes.

Preprocessing:

- MULTIPLIER: 1024

MIB: FREENAS-MIB

Total amount of cache hits in the ARC per second.

Preprocessing:

- CHANGE_PER_SECOND

MIB: FREENAS-MIB

Total amount of cache misses in the ARC per second.

Preprocessing:

- CHANGE_PER_SECOND

MIB: FREENAS-MIB

ARC target size of cache in bytes.

Preprocessing:

- MULTIPLIER: 1024

- DISCARD_UNCHANGED_HEARTBEAT: 1h

MIB: FREENAS-MIB

ARC target size of MRU in bytes.

Preprocessing:

- MULTIPLIER: 1024

- DISCARD_UNCHANGED_HEARTBEAT: 1h