Linux

Linux

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged in a Linux distribution.

Available solutions




Source: https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/os/linux_agent


Template Module Linux CPU by Zabbix agent

Overview

For Zabbix version: 4.4

Setup

Zabbix configuration

Macros used

Name Description Default
{$CPU.UTIL.CRIT}

-

90
{$LOAD_AVG_PER_CPU.MAX.WARN}

Load per CPU considered sustainable. Tune if needed.

1.5

Template links

There are no template links in this template.

Discovery rules

Items collected

Group Name Description Type Key and additional info
CPU Number of CPUs

-

ZABBIX_PASSIVE system.cpu.num

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1d

CPU Load average (1m avg)

-

ZABBIX_PASSIVE system.cpu.load[all,avg1]
CPU Load average (5m avg)

-

ZABBIX_PASSIVE system.cpu.load[all,avg5]
CPU Load average (15m avg)

-

ZABBIX_PASSIVE system.cpu.load[all,avg15]
CPU CPU utilization

CPU utilization in %

DEPENDENT system.cpu.util

Preprocessing:

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

CPU CPU idle time

The time the CPU has spent doing nothing.

ZABBIX_PASSIVE system.cpu.util[,idle]
CPU CPU system time

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

ZABBIX_PASSIVE system.cpu.util[,system]
CPU CPU user time

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

ZABBIX_PASSIVE system.cpu.util[,user]
CPU CPU nice time

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

ZABBIX_PASSIVE system.cpu.util[,nice]
CPU CPU iowait time

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

ZABBIX_PASSIVE system.cpu.util[,iowait]
CPU CPU steal time

The amount of CPU 'stolen' from this virtual machine by the hypervisor for other tasks (such as running another virtual machine).

ZABBIX_PASSIVE system.cpu.util[,steal]
CPU CPU interrupt time

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

ZABBIX_PASSIVE system.cpu.util[,interrupt]
CPU CPU softirq time

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

ZABBIX_PASSIVE system.cpu.util[,softirq]
CPU CPU guest time

Guest time (time spent running a virtual CPU for a guest operating system)

ZABBIX_PASSIVE system.cpu.util[,guest]
CPU CPU guest nice time

Time spent running a niced guest (virtual CPU for guest operating systems under the control of the Linux kernel)

ZABBIX_PASSIVE system.cpu.util[,guest_nice]
CPU Context switches per second

-

ZABBIX_PASSIVE system.cpu.switches

Preprocessing:

- CHANGE_PER_SECOND

CPU Interrupts per second

-

ZABBIX_PASSIVE system.cpu.intr

Preprocessing:

- CHANGE_PER_SECOND

Triggers

Name Description Expression Severity Dependencies and additional info
Load average is too high (per CPU load over {$LOAD_AVG_PER_CPU.MAX.WARN} for 5m)

Per CPU load average is too high. Your system may be slow to respond.

{TEMPLATE_NAME:system.cpu.load[all,avg1].min(5m)}/{Template Module Linux CPU by Zabbix agent:system.cpu.num.last()}>{$LOAD_AVG_PER_CPU.MAX.WARN} and {Template Module Linux CPU by Zabbix agent:system.cpu.load[all,avg5].last()}>0 and {Template Module Linux CPU by Zabbix agent:system.cpu.load[all,avg15].last()}>0 AVERAGE
High CPU utilization (over {$CPU.UTIL.CRIT}% for 5m)

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

{TEMPLATE_NAME:system.cpu.util.min(5m)}>{$CPU.UTIL.CRIT} WARNING

Depends on:

- Load average is too high (per CPU load over {$LOAD_AVG_PER_CPU.MAX.WARN} for 5m)

Feedback

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

Template Module Linux filesystems by Zabbix agent

Overview

For Zabbix version: 4.4

Setup

Zabbix configuration

Macros used

Name Description Default
{$VFS.FS.FSNAME.MATCHES}

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

.+
{$VFS.FS.FSNAME.NOT_MATCHES}

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

^(/dev|/sys|/run|/proc|.+/shm$)
{$VFS.FS.FSTYPE.MATCHES}

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

^(btrfs|ext2|ext3|ext4|reiser|xfs|ffs|ufs|jfs|jfs2|vxfs|hfs|apfs|refs|ntfs|fat32|zfs)$
{$VFS.FS.FSTYPE.NOT_MATCHES}

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

^\s$
{$VFS.FS.INODE.PFREE.MIN.CRIT}

-

10
{$VFS.FS.INODE.PFREE.MIN.WARN}

-

20
{$VFS.FS.PUSED.MAX.CRIT}

-

90
{$VFS.FS.PUSED.MAX.WARN}

-

80

Template links

There are no template links in this template.

Discovery rules

Name Description Type Key and additional info
Mounted filesystem discovery

Discovery of file systems of different types.

ZABBIX_PASSIVE vfs.fs.discovery

Filter:

AND

- A: {#FSTYPE} MATCHES_REGEX {$VFS.FS.FSTYPE.MATCHES}

- B: {#FSTYPE} NOT_MATCHES_REGEX {$VFS.FS.FSTYPE.NOT_MATCHES}

- C: {#FSNAME} MATCHES_REGEX {$VFS.FS.FSNAME.MATCHES}

- D: {#FSNAME} NOT_MATCHES_REGEX {$VFS.FS.FSNAME.NOT_MATCHES}

Items collected

Group Name Description Type Key and additional info
Filesystems {#FSNAME}: Used space

Used storage in Bytes

ZABBIX_PASSIVE vfs.fs.size[{#FSNAME},used]
Filesystems {#FSNAME}: Total space

Total space in Bytes

ZABBIX_PASSIVE vfs.fs.size[{#FSNAME},total]
Filesystems {#FSNAME}: Space utilization

Space utilization in % for {#FSNAME}

ZABBIX_PASSIVE vfs.fs.size[{#FSNAME},pused]
Filesystems {#FSNAME}: Free inodes in %

-

ZABBIX_PASSIVE vfs.fs.inode[{#FSNAME},pfree]

Triggers

Name Description Expression Severity Dependencies and additional info
{#FSNAME}: Disk space is critically low (used > {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}%)

Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}.

Second condition should be one of the following:

- The disk free space is less than 5G.

- The disk will be full in less than 24 hours.

{TEMPLATE_NAME:vfs.fs.size[{#FSNAME},pused].last()}>{$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"} and (({Template Module Linux filesystems by Zabbix agent:vfs.fs.size[{#FSNAME},total].last()}-{Template Module Linux filesystems by Zabbix agent:vfs.fs.size[{#FSNAME},used].last()})<5G or {TEMPLATE_NAME:vfs.fs.size[{#FSNAME},pused].timeleft(1h,,100)}<1d) AVERAGE

Manual close: YES

{#FSNAME}: Disk space is low (used > {$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}%)

Two conditions should match: First, space utilization should be above {$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"}.

Second condition should be one of the following:

- The disk free space is less than 10G.

- The disk will be full in less than 24 hours.

{TEMPLATE_NAME:vfs.fs.size[{#FSNAME},pused].last()}>{$VFS.FS.PUSED.MAX.WARN:"{#FSNAME}"} and (({Template Module Linux filesystems by Zabbix agent:vfs.fs.size[{#FSNAME},total].last()}-{Template Module Linux filesystems by Zabbix agent:vfs.fs.size[{#FSNAME},used].last()})<10G or {TEMPLATE_NAME:vfs.fs.size[{#FSNAME},pused].timeleft(1h,,100)}<1d) WARNING

Manual close: YES

Depends on:

- {#FSNAME}: Disk space is critically low (used > {$VFS.FS.PUSED.MAX.CRIT:"{#FSNAME}"}%)

{#FSNAME}: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"}%)

It may become impossible to write to disk if there are no index nodes left.

As symptoms, 'No space left on device' or 'Disk is full' errors may be seen even though free space is available.

{TEMPLATE_NAME:vfs.fs.inode[{#FSNAME},pfree].min(5m)}<{$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"} AVERAGE
{#FSNAME}: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.WARN:"{#FSNAME}"}%)

It may become impossible to write to disk if there are no index nodes left.

As symptoms, 'No space left on device' or 'Disk is full' errors may be seen even though free space is available.

{TEMPLATE_NAME:vfs.fs.inode[{#FSNAME},pfree].min(5m)}<{$VFS.FS.INODE.PFREE.MIN.WARN:"{#FSNAME}"} WARNING

Depends on:

- {#FSNAME}: Running out of free inodes (free < {$VFS.FS.INODE.PFREE.MIN.CRIT:"{#FSNAME}"}%)

Feedback

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

Template Module Linux memory by Zabbix agent

Overview

For Zabbix version: 4.4

Setup

Zabbix configuration

Macros used

Name Description Default
{$MEMORY.AVAILABLE.MIN}

This macro is used as a threshold in memory available trigger.

20M
{$MEMORY.UTIL.MAX}

This macro is used as a threshold in memory utilization trigger.

90
{$SWAP.PFREE.MIN.WARN}

-

50

Template links

There are no template links in this template.

Discovery rules

Items collected

Group Name Description Type Key and additional info
Memory Memory utilization

Memory used percentage is calculated as (100-pavailable)

ZABBIX_PASSIVE vm.memory.size[pavailable]

Preprocessing:

- JAVASCRIPT: return (100-value);

Memory Total memory

Total memory in Bytes

ZABBIX_PASSIVE vm.memory.size[total]
Memory Available memory

Available memory, in Linux, available = free + buffers + cache. On other platforms calculation may vary. See also: https://www.zabbix.com/documentation/current/manual/appendix/items/vm.memory.size_params

ZABBIX_PASSIVE vm.memory.size[available]
Memory Total swap space

The total space of swap volume/file in bytes.

ZABBIX_PASSIVE system.swap.size[,total]
Memory Free swap space

The free space of swap volume/file in bytes.

ZABBIX_PASSIVE system.swap.size[,free]
Memory Free swap space in %

The free space of swap volume/file in percent.

ZABBIX_PASSIVE system.swap.size[,pfree]

Triggers

Name Description Expression Severity Dependencies and additional info
High memory utilization ( >{$MEMORY.UTIL.MAX}% for 5m)

The system is running out of free memory.

{TEMPLATE_NAME:vm.memory.size[pavailable].min(5m)}>{$MEMORY.UTIL.MAX} AVERAGE

Depends on:

- Lack of available memory ( < {$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2})

Lack of available memory ( < {$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2})

-

{TEMPLATE_NAME:vm.memory.size[available].min(5m)}<{$MEMORY.AVAILABLE.MIN} and {Template Module Linux memory by Zabbix agent:vm.memory.size[total].last()}>0 AVERAGE
High swap space usage ( less than {$SWAP.PFREE.MIN.WARN}% free)

This trigger is ignored, if there is no swap configured

{TEMPLATE_NAME:system.swap.size[,pfree].min(5m)}<{$SWAP.PFREE.MIN.WARN} and {Template Module Linux memory by Zabbix agent:system.swap.size[,total].last()}>0 WARNING

Depends on:

- High memory utilization ( >{$MEMORY.UTIL.MAX}% for 5m)

- Lack of available memory ( < {$MEMORY.AVAILABLE.MIN} of {ITEM.VALUE2})

Feedback

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

Template Module Linux block devices by Zabbix agent

Overview

For Zabbix version: 4.4

Setup

Refer to the vendor documentation.

Zabbix configuration

No specific Zabbix configuration is required.

Macros used

Name Description Default
{$VFS.DEV.DEVNAME.MATCHES}

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

.+
{$VFS.DEV.DEVNAME.NOT_MATCHES}

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

^(loop[0-9]*|sd[a-z][0-9]+|nbd[0-9]+|sr[0-9]+|fd[0-9]+|dm-[0-9]+|ram[0-9]+|ploop[a-z0-9]+|md[0-9]*|hcp[0-9]*|zram[0-9]*)
{$VFS.DEV.READ.AWAIT.WARN}

Disk read average response time (in ms) before the trigger would fire

20
{$VFS.DEV.WRITE.AWAIT.WARN}

Disk write average response time (in ms) before the trigger would fire

20

Template links

There are no template links in this template.

Discovery rules

Name Description Type Key and additional info
Block devices discovery

-

DEPENDENT vfs.dev.discovery

Preprocessing:

- JSONPATH: $.lld

- DISCARD_UNCHANGED_HEARTBEAT: 1h

Filter:

AND

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

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

Items collected

Group Name Description Type Key and additional info
Storage {#DEVNAME}: Disk read rate

r/s. The number (after merges) of read requests completed per second for the device.

DEPENDENT vfs.dev.read.rate[{#DEVNAME}]

Preprocessing:

- JSONPATH: $.values['{#DEVNAME}'][3]

- CHANGE_PER_SECOND

Storage {#DEVNAME}: Disk write rate

w/s. The number (after merges) of write requests completed per second for the device.

DEPENDENT vfs.dev.write.rate[{#DEVNAME}]

Preprocessing:

- JSONPATH: $.values['{#DEVNAME}'][7]

- CHANGE_PER_SECOND

Storage {#DEVNAME}: Disk read request avg waiting time (r_await)

This formula contains two boolean expressions that evaluates to 1 or 0 in order to set calculated metric to zero and to avoid division by zero exception.

CALCULATED vfs.dev.read.await[{#DEVNAME}]

Expression:

(last("vfs.dev.read.time.rate[{#DEVNAME}]")/(last("vfs.dev.read.rate[{#DEVNAME}]")+(last("vfs.dev.read.rate[{#DEVNAME}]")=0)))*1000*(last("vfs.dev.read.rate[{#DEVNAME}]") > 0)
Storage {#DEVNAME}: Disk write request avg waiting time (w_await)

This formula contains two boolean expressions that evaluates to 1 or 0 in order to set calculated metric to zero and to avoid division by zero exception.

CALCULATED vfs.dev.write.await[{#DEVNAME}]

Expression:

(last("vfs.dev.write.time.rate[{#DEVNAME}]")/(last("vfs.dev.write.rate[{#DEVNAME}]")+(last("vfs.dev.write.rate[{#DEVNAME}]")=0)))*1000*(last("vfs.dev.write.rate[{#DEVNAME}]") > 0)
Storage {#DEVNAME}: Disk average queue size (avgqu-sz)

Current average disk queue, the number of requests outstanding on the disk at the time the performance data is collected.

DEPENDENT vfs.dev.queue_size[{#DEVNAME}]

Preprocessing:

- JSONPATH: $.values['{#DEVNAME}'][13]

- CHANGE_PER_SECOND

- MULTIPLIER: 0.001

Storage {#DEVNAME}: Disk utilization

This item is the percentage of elapsed time that the selected disk drive was busy servicing read or writes requests.

DEPENDENT vfs.dev.util[{#DEVNAME}]

Preprocessing:

- JSONPATH: $.values['{#DEVNAME}'][12]

- CHANGE_PER_SECOND

- MULTIPLIER: 0.1

Zabbix_raw_items Get /proc/diskstats

Get contents of /proc/diskstats for discovery and disk stats.

ZABBIX_PASSIVE vfs.file.contents[/proc/diskstats]

Preprocessing:

- JAVASCRIPT: var parsed = value.split("\n").reduce(function(acc, x, i) { parts = x.trim().split(/ +/) acc["values"][parts[2]] = parts acc["lld"].push({"{#DEVNAME}":parts[2]}) return acc; }, {"values":{}, "lld": []}); return JSON.stringify(parsed);

Zabbix_raw_items {#DEVNAME}: Disk read time (rate)

Rate of total read time counter. Used in r_await calculation

DEPENDENT vfs.dev.read.time.rate[{#DEVNAME}]

Preprocessing:

- JSONPATH: $.values['{#DEVNAME}'][6]

- CHANGE_PER_SECOND

- MULTIPLIER: 0.001

Zabbix_raw_items {#DEVNAME}: Disk write time (rate)

Rate of total write time counter. Used in w_await calculation

DEPENDENT vfs.dev.write.time.rate[{#DEVNAME}]

Preprocessing:

- JSONPATH: $.values['{#DEVNAME}'][10]

- CHANGE_PER_SECOND

- MULTIPLIER: 0.001

Triggers

Name Description Expression Severity Dependencies and additional info
{#DEVNAME}: Disk read/write request responses are too high (read > {$VFS.DEV.READ.AWAIT.WARN:"{#DEVNAME}"} ms for 15m or write > {$VFS.DEV.WRITE.AWAIT.WARN:"{#DEVNAME}"} ms for 15m)

This trigger might indicate disk {#DEVNAME} saturation.

{TEMPLATE_NAME:vfs.dev.read.await[{#DEVNAME}].min(15m)} > {$VFS.DEV.READ.AWAIT.WARN:"{#DEVNAME}"} or {Template Module Linux block devices by Zabbix agent:vfs.dev.write.await[{#DEVNAME}].min(15m)} > {$VFS.DEV.WRITE.AWAIT.WARN:"{#DEVNAME}"} WARNING

Manual close: YES

Feedback

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

Known Issues

Template Module Linux network interfaces by Zabbix agent

Overview

For Zabbix version: 4.4

Setup

Refer to the vendor documentation.

Zabbix configuration

No specific Zabbix configuration is required.

Macros used

Name Description Default
{$IF.ERRORS.WARN}

-

2
{$IFCONTROL}

-

1
{$NET.IF.IFNAME.MATCHES}

-

^.*$
{$NET.IF.IFNAME.NOT_MATCHES}

Filter out loopbacks, nulls, docker veth links and docker0 bridge by default

(^Software Loopback Interface|^NULL[0-9.]*$|^[Ll]o[0-9.]*$|^[Ss]ystem$|^Nu[0-9.]*$|^veth[0-9a-z]+$|docker[0-9]+|br-[a-z0-9]{12})

Template links

There are no template links in this template.

Discovery rules

Name Description Type Key and additional info
Network interface discovery

Discovery of network interfaces.

ZABBIX_PASSIVE net.if.discovery

Filter:

AND

- A: {#IFNAME} MATCHES_REGEX {$NET.IF.IFNAME.MATCHES}

- B: {#IFNAME} NOT_MATCHES_REGEX {$NET.IF.IFNAME.NOT_MATCHES}

Items collected

Group Name Description Type Key and additional info
Network_interfaces Interface {#IFNAME}: Bits received ZABBIX_PASSIVE net.if.in["{#IFNAME}"]

Preprocessing:

- CHANGE_PER_SECOND

- MULTIPLIER: 8

Network_interfaces Interface {#IFNAME}: Bits sent ZABBIX_PASSIVE net.if.out["{#IFNAME}"]

Preprocessing:

- CHANGE_PER_SECOND

- MULTIPLIER: 8

Network_interfaces Interface {#IFNAME}: Outbound packets with errors ZABBIX_PASSIVE net.if.out["{#IFNAME}",errors]

Preprocessing:

- CHANGE_PER_SECOND

Network_interfaces Interface {#IFNAME}: Inbound packets with errors ZABBIX_PASSIVE net.if.in["{#IFNAME}",errors]

Preprocessing:

- CHANGE_PER_SECOND

Network_interfaces Interface {#IFNAME}: Outbound packets discarded ZABBIX_PASSIVE net.if.out["{#IFNAME}",dropped]

Preprocessing:

- CHANGE_PER_SECOND

Network_interfaces Interface {#IFNAME}: Inbound packets discarded ZABBIX_PASSIVE net.if.in["{#IFNAME}",dropped]

Preprocessing:

- CHANGE_PER_SECOND

Network_interfaces Interface {#IFNAME}: Operational status

Indicates the interface RFC2863 operational state as a string.

Possible values are:"unknown", "notpresent", "down", "lowerlayerdown", "testing","dormant", "up".

Reference: https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-net

ZABBIX_PASSIVE vfs.file.contents["/sys/class/net/{#IFNAME}/operstate"]

Preprocessing:

- JAVASCRIPT: var newvalue; switch(value) { case "up": newvalue = 1; break; case "down": newvalue = 2; break; case "testing": newvalue = 4; break; case "unknown": newvalue = 5; break; case "dormant": newvalue = 6; break; case "notPresent": newvalue = 7; break; default: newvalue = "Problem parsing interface operstate in JS"; } return newvalue;

Network_interfaces Interface {#IFNAME}: Interface type

Indicates the interface protocol type as a decimal value.

See include/uapi/linux/if_arp.h for all possible values.

Reference: https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-net

ZABBIX_PASSIVE vfs.file.contents["/sys/class/net/{#IFNAME}/type"]

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1d

Triggers

Name Description Expression Severity Dependencies and additional info
Interface {#IFNAME}: High error rate ( > {$IF.ERRORS.WARN:"{#IFNAME}"} for 5m)

Recovers when below 80% of {$IF.ERRORS.WARN:"{#IFNAME}"} threshold

{TEMPLATE_NAME:net.if.in["{#IFNAME}",errors].min(5m)}>{$IF.ERRORS.WARN:"{#IFNAME}"} or {Template Module Linux network interfaces by Zabbix agent:net.if.out["{#IFNAME}",errors].min(5m)}>{$IF.ERRORS.WARN:"{#IFNAME}"}

Recovery expression:

{TEMPLATE_NAME:net.if.in["{#IFNAME}",errors].max(5m)}<{$IF.ERRORS.WARN:"{#IFNAME}"}*0.8 and {Template Module Linux network interfaces by Zabbix agent:net.if.out["{#IFNAME}",errors].max(5m)}<{$IF.ERRORS.WARN:"{#IFNAME}"}*0.8
WARNING

Manual close: YES

Depends on:

- Interface {#IFNAME}: Link down

Interface {#IFNAME}: Link down

This trigger expression works as follows:

1. Can be triggered if operations status is down.

2. {$IFCONTROL:"{#IFNAME}"}=1 - user can redefine Context macro to value - 0. That marks this interface as not important. No new trigger will be fired if this interface is down.

3. {TEMPLATE_NAME:METRIC.diff()}=1) - trigger fires only if operational status was up(1) sometime before. (So, do not fire 'ethernal off' interfaces.)

WARNING: if closed manually - won't fire again on next poll, because of .diff.

{$IFCONTROL:"{#IFNAME}"}=1 and ({TEMPLATE_NAME:vfs.file.contents["/sys/class/net/{#IFNAME}/operstate"].last()}=2 and {TEMPLATE_NAME:vfs.file.contents["/sys/class/net/{#IFNAME}/operstate"].diff()}=1)

Recovery expression:

{TEMPLATE_NAME:vfs.file.contents["/sys/class/net/{#IFNAME}/operstate"].last()}<>2
AVERAGE

Manual close: YES

Interface {#IFNAME}: Ethernet has changed to lower speed than it was before

This Ethernet connection has transitioned down from its known maximum speed. This might be a sign of autonegotiation issues. Ack to close.

{TEMPLATE_NAME:vfs.file.contents["/sys/class/net/{#IFNAME}/type"].change()}<0 and {TEMPLATE_NAME:vfs.file.contents["/sys/class/net/{#IFNAME}/type"].last()}>0 and ({Template Module Linux network interfaces by Zabbix agent:vfs.file.contents["/sys/class/net/{#IFNAME}/type"].last()}=6 or {Template Module Linux network interfaces by Zabbix agent:vfs.file.contents["/sys/class/net/{#IFNAME}/type"].last()}=1) and ({Template Module Linux network interfaces by Zabbix agent:vfs.file.contents["/sys/class/net/{#IFNAME}/operstate"].last()}<>2)

Recovery expression:

({TEMPLATE_NAME:vfs.file.contents["/sys/class/net/{#IFNAME}/type"].change()}>0 and {TEMPLATE_NAME:vfs.file.contents["/sys/class/net/{#IFNAME}/type"].prev()}>0) or ({Template Module Linux network interfaces by Zabbix agent:vfs.file.contents["/sys/class/net/{#IFNAME}/operstate"].last()}=2)
INFO

Manual close: YES

Depends on:

- Interface {#IFNAME}: Link down

Feedback

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

Known Issues

  • Description: High interface utilization trigger is removed since currently it is not possible to retrieve interface speed to determine the max bandwidth.

Template Module Linux generic by Zabbix agent

Overview

For Zabbix version: 4.4

Setup

Zabbix configuration

Macros used

Name Description Default
{$KERNEL.MAXFILES.MIN}

-

256
{$KERNEL.MAXPROC.MIN}

-

1024
{$SYSTEM.FUZZYTIME.MAX}

-

60

Template links

There are no template links in this template.

Discovery rules

Items collected

Group Name Description Type Key and additional info
General System boot time

-

ZABBIX_PASSIVE system.boottime

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1h

General System local time

System local time of the host.

ZABBIX_PASSIVE system.localtime
General System name

System host name.

ZABBIX_PASSIVE system.hostname

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1h

General System description

The information as normally returned by 'uname -a'.

ZABBIX_PASSIVE system.uname

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1d

General Number of logged in users

Number of users who are currently logged in.

ZABBIX_PASSIVE system.users.num
General Maximum number of open file descriptors

It could be increased by using sysctrl utility or modifying file /etc/sysctl.conf.

ZABBIX_PASSIVE kernel.maxfiles

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1d

General Maximum number of processes

It could be increased by using sysctrl utility or modifying file /etc/sysctl.conf.

ZABBIX_PASSIVE kernel.maxproc

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1d

General Number of processes

-

ZABBIX_PASSIVE proc.num
General Number of running processes

-

ZABBIX_PASSIVE proc.num[,,run]
Inventory Operating system

-

ZABBIX_PASSIVE system.sw.os

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1d

Inventory Operating system architecture

Operating system architecture of the host.

ZABBIX_PASSIVE system.sw.arch

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1d

Inventory Software installed

-

ZABBIX_PASSIVE system.sw.packages

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1d

Security Checksum of /etc/passwd

-

ZABBIX_PASSIVE vfs.file.cksum[/etc/passwd]

Preprocessing:

- DISCARD_UNCHANGED_HEARTBEAT: 1h

Status System uptime

System uptime in 'N days, hh:mm:ss' format.

ZABBIX_PASSIVE system.uptime

Triggers

Name Description Expression Severity Dependencies and additional info
System time is out of sync (diff with Zabbix server > {$SYSTEM.FUZZYTIME.MAX}s)

The host system time is different from the Zabbix server time.

{TEMPLATE_NAME:system.localtime.fuzzytime({$SYSTEM.FUZZYTIME.MAX})}=0 WARNING

Manual close: YES

System name has changed (new name: {ITEM.VALUE})

System name has changed. Ack to close.

{TEMPLATE_NAME:system.hostname.diff()}=1 and {TEMPLATE_NAME:system.hostname.strlen()}>0 INFO

Manual close: YES

Configured max number of open filedescriptors is too low (< {$KERNEL.MAXFILES.MIN})

-

{TEMPLATE_NAME:kernel.maxfiles.last()}<{$KERNEL.MAXFILES.MIN} INFO
Configured max number of processes is too low (< {$KERNEL.MAXPROC.MIN})

-

{TEMPLATE_NAME:kernel.maxproc.last()}<{$KERNEL.MAXPROC.MIN} INFO

Depends on:

- Getting closer to process limit (over 80% used)

Getting closer to process limit (over 80% used)

-

{TEMPLATE_NAME:proc.num.last()}/{Template Module Linux generic by Zabbix agent:kernel.maxproc.last()}*100>80 WARNING
Operating system description has changed

Operating system description has changed. Possible reasons that system has been updated or replaced. Ack to close.

{TEMPLATE_NAME:system.sw.os.diff()}=1 and {TEMPLATE_NAME:system.sw.os.strlen()}>0 INFO

Manual close: YES

Depends on:

- System name has changed (new name: {ITEM.VALUE})

/etc/passwd has been changed

-

{TEMPLATE_NAME:vfs.file.cksum[/etc/passwd].diff()}>0 INFO

Manual close: YES

Depends on:

- Operating system description has changed

- System name has changed (new name: {ITEM.VALUE})

{HOST.NAME} has been restarted (uptime < 10m)

The host uptime is less than 10 minutes

{TEMPLATE_NAME:system.uptime.last()}<10m WARNING

Manual close: YES

Feedback

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

Template OS Linux by Zabbix agent

Overview

For Zabbix version: 4.4
New official Linux template. Requires agent of Zabbix 3.0.14, 3.4.5 and 4.0.0 or newer.

Setup

Install Zabbix agent on Linux OS according to Zabbix documentation.

Zabbix configuration

No specific Zabbix configuration is required.

Template links

Name
Template Module Linux CPU by Zabbix agent
Template Module Linux block devices by Zabbix agent
Template Module Linux filesystems by Zabbix agent
Template Module Linux generic by Zabbix agent
Template Module Linux memory by Zabbix agent
Template Module Linux network interfaces by Zabbix agent
Template Module Zabbix agent

Discovery rules

Items collected

Group Name Description Type Key and additional info

Triggers

Name Description Expression Severity Dependencies and additional info

Feedback

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

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

Known Issues

  • Description: Network discovery. Zabbix agent as of 4.2 doesn't support items such as net.if.status, net.if.speed.
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