Varnish Cache monitoring with Netdata

Provides HTTP accelerator global, Backends (VBE) and Storages (SMF, SMA, MSE) statistics using varnishstat tool.

Note that both, Varnish-Cache (free and open source) and Varnish-Plus (Commercial/Enterprise version), are supported.

Requirements

• netdata user must be a member of the varnish group

Charts

This module produces the following charts:

• Connections Statistics in connections/s
• Client Requests in requests/s
• All History Hit Rate Ratio in percent
• Current Poll Hit Rate Ratio in percent
• Expired Objects in expired/s
• Least Recently Used Nuked Objects in nuked/s
• Number Of Threads In All Pools in pools
• Threads Statistics in threads/s
• Current Queue Length in requests
• Backend Connections Statistics in connections/s
• Requests To The Backend in requests/s
• ESI Statistics in problems/s
• Memory Usage in MiB
• Uptime in seconds

For every backend (VBE):

• Backend Response Statistics in kilobits/s

For every storage (SMF, SMA, or MSE):

• Storage Usage in KiB
• Storage Allocated Objects

Configuration

Edit the python.d/varnish.conf configuration file using edit-config from the Netdata config directory, which is typically at /etc/netdata.

cd /etc/netdata # Replace this path with your Netdata config directory, if different

sudo ./edit-config python.d/varnish.conf

Only one parameter is supported:

instance_name: 'name'

The name of the varnishd instance to get logs from. If not specified, the host name is used.

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