check_varnishbackends.py

##Overview

This health check allows you to monitor the state of your backends for Nagios/Icinga.

Usage

  -h, --help                   Show help message and exit
  -H HOST, --host=HOST         The ip varnishadm is listening on (Default: 127.0.0.1)
  -P PORT, --port=PORT         The port varnishadm is listening on (Default: 6082)
  -s SECRET, --secret=SECRET   The path to the secret file (Default: /etc/varnish/secret)
  -p PATH, --path=PATH         The path to the varnishadm binary (Default: /usr/bin/varnishadm
   Example: ./check_varnishbackends.py -H 127.0.0.1 -P 6082 -S /etc/varnish/secret -p /usr/bin/varnishadm

Frequently Asked Questions

I am getting "No backends detected"

Ensure you have a .probe configured such as,

backend default {
  .host = "127.0.0.1";
  .port = "80";
  .probe = {
        .url = "/";
        .interval = 5s;
        .timeout = 5s;
        .window = 5;
        .threshold = 3;
  }
}

Change Log

v1.3 - 21 Feb 2022

• Migrated to Python 3
• Varnish 6.2 compatibility
• Improved output

v1.2 - 16 Apr 2016

• Added compatibility with Varnish 4.1

v1.1 - 2 July 2014

• Added notice regarding .probe
• Merged into own repo with active change log

v1.0 - 19 April 2012

• Initial Release
• Updating Contact information