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Varnish Docker container

Centos 6
Varnish 3.x

Usage

To use this container, you will need to provide your custom config.vcl (which is usually the case).

docker run -d \
  --link web-app:backend-host \
  --volumes-from web-app \
  --env 'VCL_CONFIG=/data/path/to/varnish.vcl' \
  million12/varnish

In the above example we assume that:

  • You have your application running inside web-app container and web server there is running on port 80 (although you don't need to expose that port, as we use --link and varnish will connect directly to it)
  • web-app container has /data volume with varnish.vcl somewhere there
  • web-app is aliased inside varnish container as backend-host
  • Your varnish.vcl should contain at least backend definition like this:
    backend default {
      .host = "backend-host";
      .port = "80";
    }
    

Environmental variables

You can configure Varnish daemon by following env variables:

VCL_CONFIG /etc/varnish/default.vcl
CACHE_SIZE 64m
VARNISHD_PARAMS -p default_ttl=3600 -p default_grace=3600

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spantree

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