sdvdxl / docker-varnish

Varnish Docker container with NCSA/Apache logging.

Docker - Varnish with NCSA Logging

This Docker container can be used to launch Varnishd with the Varnischncsa logger. The varnishncsa utility reads varnishd's shared memory logs and presents them in the Apache/NCSA "combined" log format.

This format can be customized in the supervisord.conf to match your preferred format so it's log volume can be mounted to other Docker containers for analysis/graphing.

Usage

Pulling from the Docker Index

This image is available for download on the Docker Index.

docker pull paul91/varnish

If successful, this image can be found in your local list of images through docker ps.

Building the container

If you would like to customize this container, clone this repo, make your changes, and build.

docker build -t paul91/varnish .

Starting the container

It is recommended that you either mount the container's /var/log/varnish directory to the host machine or another container (i.e LogStash) to fully take advantage of the NCSA logging.

docker run -i -t -p 80:80 -v /tmp/varnish:/var/log/varnish paul91/varnish

You can also mount a custom default.vcl using Docker volumes.

docker run -d -p 80:80 \
  -v $(pwd)/custom.vcl:/etc/varnish/default.vcl:ro \
  -v /tmp/varnish/:/var/log/varnish \
  paul91/varnish

Available environment variables

Setting any of the following environment variables with -e will override the defaults set in the Dockerfile when Varnish is started. If you would like to add additional parameters, please open a Pull Request.

Varnishd

• VARNISH_TTL: Specifies a hard minimum time to live for cached documents. This is a shortcut for specifying the default_ttl run-time parameter. Default: 60

Varnishncsa

• VARNISHNCSA_LOGFORMAT: Specify the log format used. If no format is specified the default log format is used. Default: %h %l %u %t "%r" %s %b "%{Referer}i" "%{User-agent}i"

Killing the container

All running paul91/varnish containers can be killed by the following command.

docker ps | grep 'paul91/varnish' | awk '{print $1}' | xargs docker kill

Testing/Building with Vagrant

The Vagrantfile packaged with this Docker container will build a virtual machine using CoreOS. Information specific to this type of virtual machine can be found here.

To Do

• Customizable environment variables (ports/logformat/etc).

Contributing

This project accepts contributions via GitHub pull requests here.

License

paul91/docker-varnish is available under the Apache License 2.0. See LICENSE for more details.

Reference

• varnishd
• varnishncsa
• Share Directories via Volumes