A simple load balancer presence manager for Docker containers on top of etcd

Re:A simple load balancer presence manager for Docker contai... by fideloper on Friday September 12, 2014 @09:55PM (#8311405)

I'm still waiting on a guide which can show how to host multiple public sites on a host server using Docker containers.

Do you need a load balancer which can send requests upstream based on host name? (Nginx load balancing perhaps?) is that not a good use case for docker?

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Re:A simple load balancer presence manager for Docker contai... by jaswilder on Saturday September 13, 2014 @01:57AM (#8311728)

I wrote up a post with one way to do that: http://jasonwilder.com/blog/2014/03/25/automated-nginx-rever...

You can try nginx-proxy that wraps up the approach in a docker container. See https://registry.hub.docker.com/u/jwilder/nginx-proxy/.

Run that on your host and start your other containers on the host with VIRTUAL_HOST env variables and it will set up virtual host mappings via nginx automatically.

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Re:A simple load balancer presence manager for Docker contai... by keepdigging on Saturday September 13, 2014 @08:56AM (#8312244)

vulcand was designed to do this with etcd

https://github.com/mailgun/vulcand

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Re:A simple load balancer presence manager for Docker contai... by SEJeff on Tuesday September 16, 2014 @04:35PM (#8326949)

Bonus points that via a trie, vulcand can scale in performance linearly to 10s of thousands (or more) of urls with 0 performance impact. (I requested that feature)

http://www.vulcanproxy.com/

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Re:A simple load balancer presence manager for Docker contai... by bruce_one on Saturday September 13, 2014 @01:26AM (#8311700)

Docker injects environment variables with ip addresses, as well as setting the host name. Hence it's very easy to use the environment variables and not worry about hostnames :-)

    backend beChalet
            option httpchk GET /
            server chalet ${CHALET_PORT_80_TCP_ADDR}:${CHALET_PORT_80_TCP_PORT} maxconn 200 check

https://docs.docker.com/userguide/dockerlinks/#container-lin... has more details

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