Proposal: docker-compose

[dirkmoors]

Hello,

I've created a docker-compose setup, together with a 'install kong from git source' Dockerfile.
https://github.com/vikingco/docker-kong

Is that something you guys can use? Then we might consider integrating my approach into this repository (and deprecating my repository)

Cheers

[subnetmarco]

Hi @dirkmoors - sorry for the super late update. Docker compose is a nice addition. Do you think you can update your example with the latest 0.6.1 release?

Happy to merge this into our repo.

[ambrons]

@thefosk if @dirkmoors doesn't I don't mind picking up the torch there. I'm half way through as it is of doing almost the same thing.

[fakraemer]

This will not work with a cold cassandra container, since cassandra is still bootstrapping whilst it is linked into the kong container. With docker-compose stop && docker-compose rm -f && docker-compose up I get:

kong_1           | [ERR] Cassandra error: All hosts tried for query failed. cassandra:9042: connection refused for socket with peer cassandra:9042.
kong_1           | [ERR] Could not start Kong

This is due to a lack in feature of docker really, it should allow you to listen for exposed ports to be opened. So for the moment being I would suggest a small bootstrap wrapper on the kong container. The following works for me, but you might want to add some timeout on that loop to catch missconfiguration (e.g. wrong alias/missing cassandra):

kong-cassandra:
  image: cassandra:2.2.4
kong:
  image: mashape/kong
  links:
    - kong-cassandra:cassandra
  ports:
    - 8000:8000
    - 8001:8001
  command: sh -c 'until nc --recv-only -i 0.1 cassandra 9042 2>&1 >/dev/null|grep timeout >/dev/null; do :; done; kong start && tail -f /usr/local/kong/logs/error.log'

At this point, it would probably be best to use entrypoint instead of command on the kong image in order to avoid the extra shell.

[subnetmarco]

since cassandra is still bootstrapping whilst it is linked into the kong container

Somebody suggested using restart: always to make this work.

[DonMartin76]

Or use dockerize to make the container wait for Cassandra before kong start is issued.

[subnetmarco]

Available now for 0.9 in the compose folder :)