This is a million12/haproxy docker container with HAProxy load balancer. This work is very similar to official dockerfile/haproxy, but it's based on CentOS-7 and, more importantly, offers ability to provide any arguments to haproxy process. It's also pretty lightweight, only ~240M (vs. ~420M Ubuntu-based dockerfile/haproxy).

This container is built that any extra parameters provided to docker run will be passed directly to haproxy command. For example, if you run docker run [run options] million12/haproxy -n 1000 you pass -n 1000 to haproxy daemon.

The default haproxy.cfg is provided just for demonstration purposes, so of course you will want to override it.

This container comes with inotify to monitor changes in HAProxy config and reload HAProxy daemon. The reload is done in a way that no connection is lost.

HAPROXY_CONFIG
Default: HAPROXY_CONFIG=/etc/haproxy/haproxy.cfg
If you mount your config to different location, simply edit it.

docker run -ti -p 80:80 -p 443:443 million12/haproxy

docker run -d -p 80:80 -v /my-haproxy.cfg:/etc/haproxy/haproxy.cfg million12/haproxy -n 10000
Note: in this case config is mounted to its default location, so you don't need to modify HAPROXY_CONFIG variable.

docker run -ti million12/haproxy -vv

The default URL for stats is http://CONTAINER_IP/admin?stats with username:password ser to admin:admin.

Author: Marcin ryzy Ryzycki (marcin@m12.io)
Author: Przemyslaw Ozgo (linux@ozgo.info)

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