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This is a Zabbix template + script useful to monitor Varnish Cache Plus instances:

  1. Copy zabbix-varnish-cache.py to /usr/local/bin/.

  2. Add the varnish.discovery and varnish.stats user parameters to Zabbix:

    UserParameter=varnish.discovery[*],sudo /usr/local/bin/zabbix-varnish-cache.py -i '$1' discover $2
    UserParameter=varnish.stats[*],sudo /usr/local/bin/zabbix-varnish-cache.py -i '$1' stats
    

    You'll have to grant zabbix user sudo permissions to execute /usr/local/bin/zabbix-varnish-cache.py in order to let the script perform varnishadm commands to discover the current active VCL, discover healthiness of each backend, etc.

    If you'd rather not use sudo, then add zabbix user to the varnish group in order for the script to be able to retrieve as much data as possible:

    $ sudo usermod -a --groups varnish zabbix
    
  3. Import the template. You may download the appropriate version from the releases page or generate it using the Jinja2 skeleton:

    $ pip install jinja2-cli
    $ PYTHONPATH=. jinja2 \
        -D version={5.0,5.2,5.4,6.0,6.2} \
        [-D name='Varnish Cache'] \
        [-D description=''] \
        --extension=extensions.zabbix.ZabbixExtension --strict -o template.xml template-app-varnish-cache.j2
    
  4. Link hosts to the template. Beware you must set a value for the {$VARNISH_CACHE.LOCATIONS} macro (comma-delimited list of Varnish Cache Plus instance names). Usually you should leave its value blank when running a single Varnish Cache Plus instance per server. Additional macros and contexts are available for further customizations.

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Zabbix template + script useful to monitor Varnish Cache Plus instances

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