Network availability by Zabbix agent

Overview

This template is designed for network availability monitoring by Zabbix agent via ping and doesn't require any external scripts.

Requirements

Zabbix version: 6.0 and higher.
Define user parameters.

Tested versions

This template has been tested on:

Macros used

Name	Description	Default
{$ADDRESS1}	address to check availability	`1.1.1.1`
{$ADDRESS2}	address to check availability	`8.8.8.8`
{$ADDRESS3}	address to check availability	`9.9.9.9`

Items

Name	Description	Type	Key and additional info
Network address 1 available	Availability of address 1 by ping	Zabbix agent	'network.address1[{$ADDRESS1}]'
Network address 2 available	Availability of address 2 by ping	Zabbix agent	'network.address2[{$ADDRESS2}]'
Network address 3 available	Availability of address 3 by ping	Zabbix agent	'network.address3[{$ADDRESS3}]'
Network default gateway	Network default gateway	Zabbix agent	'network.gateway'

Triggers

Name	Description	Expression	Severity	Dependencies and additional info
Network via {ITEM.VALUE4} not available		last(/Network availability by Zabbix agent/network.address1[{$ADDRESS1}],#1)=0 and last(/Network availability by Zabbix agent/network.address2[{$ADDRESS2}],#1)=0 and last(/Network availability by Zabbix agent/network.address3[{$ADDRESS3}],#1)=0 and length(last(/Network availability by Zabbix agent/network.gateway))>0)<7	High	Manual close: No
Default gateway has changed (new gateway: {ITEM.VALUE})		last(/Network availability by Zabbix agent/network.gateway,#1)<>last(/Network availability by Zabbix agent/network.gateway,#2) and length(last(/Network availability by Zabbix agent/network.gateway))>0	Average	Manual close: Yes

Discovery rules

There are no discovery rules in this template.

Item prototypes

There are no item prototypes in this template.

Define user parameters

for Linux:

tee -a /etc/zabbix/zabbix_agentd.conf > /dev/null <<'EOF'
Timeout=30
UserParameter=network.gateway, ip ro | grep -e default | awk '{print $3}'
UserParameter=network.address1[*], ping -q -w 3 -c 1 $1 > /dev/null && echo 1 || echo 0
UserParameter=network.address2[*], ping -q -w 3 -c 1 $1 > /dev/null && echo 1 || echo 0
UserParameter=network.address3[*], ping -q -w 3 -c 1 $1 > /dev/null && echo 1 || echo 0
EOF

systemctl restart zabbix-agent

for Windows:

powershell.exe
$text = @"
Timeout=30
UserParameter=network.gateway, powershell.exe -Command "Get-NetRoute -DestinationPrefix '0.0.0.0/0' | Select-Object -ExpandProperty 'NextHop'"
UserParameter=network.address1[*], ping -w 3000 -n 1 $1 > NUL && echo 1 || echo 0
UserParameter=network.address2[*], ping -w 3000 -n 1 $1 > NUL && echo 1 || echo 0
UserParameter=network.address3[*], ping -w 3000 -n 1 $1 > NUL && echo 1 || echo 0
"@
$text | Out-File -Append "$env:ProgramFiles\Zabbix Agent\zabbix_agentd.conf" -Encoding "UTF8"
exit

sc stop "Zabbix Agent" && sc start "Zabbix Agent"

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