varnish-alpine-docker

A very small Varnish docker image based on Alpine Linux, with

• Templating support (via gomplate)
• querystring vmod included

Based upon thiagofigueiro/varnish-alpine-docker

Includes a metrics endpoint suitable for use with Promemetheus, using https://github.com/jonnenauha/prometheus_varnish_exporter

Environment variables

• VARNISH_MEMORY - how much memory Varnish can use for caching. Defaults to 100M.
• VARNISH_GOMPLATE_FILE - a template file to use, filled in with your environment variables. No default set. Needs VARNISH_CONFIG_FILE set.
• VARNISH_CONFIG_FILE - path to a VCL file. Use this or the two options below:
• VARNISH_BACKEND_ADDRESS - host/ip of your backend. Defaults to 192.168.1.65.
• VARNISH_BACKEND_PORT - TCP port of your backend. Defaults to 80.
• VARNISH_SKIP_METRICS - Skip exposing a metrics endpoint.
• VARNISH_NCSA_FORMAT - Custom varnishncsa format. Defaults to %h %l %u %t "%r" %s %b "%{Referer}i" "%{User-agent}i"
• VARNISH_VSL_RECLEN - Maximum number of bytes in SHM log. Defaults to 255.

Quick start

Run with defaults:

docker run -Pit --name=varnish-alpine egeland/varnish-alpine-docker

Specify your backend configuration:

docker run -e VARNISH_BACKEND_ADDRESS=a.b.c.d \
           -e VARNISH_BACKEND_PORT=nn \
           -e VARNISH_MEMORY=1G \
           -Pit --name=varnish-alpine egeland/varnish-alpine-docker

Build image locally:

git clone git@github.com:egeland/varnish-alpine-docker.git
cd varnish-alpine-docker
docker build -t varnish-alpine-docker .

Software

• Varnish
• Gomplate
• Alpine Linux
• Docker Alpine

Versions

As of version 5.0.0 the generated image follows a semver versioning scheme.

See the CHANGELOG.md for details of each release.

Acknowledgements

• https://github.com/thiagofigueiro/varnish-alpine-docker
• https://github.com/jacksoncage/varnish-docker