Rocket chat high availability with kubernetes

Question

I am trying to setup HA rocket chat with kubernetes. According to the rocket chat HA guide, rocket supports HA. I assume StatefulSet should be used to support such records:

    extra_hosts:
    - "rocket-1:10.250.250.13"
    - "rocket-2:10.250.250.14"
    - "rocket-3:10.250.250.17"

However i still miss some parts of the puzzle. Where in kubernetes can i specify extra_hosts? Is where any guide of how to achieve it?

Answer 1

I just came across this while I was looking into deploying rocket chat on kubernetes. I don't know if you've solved this issue, but the extra_hosts field in the docker compose file is just for hostname resolution. If you already have a dns service deployed on the cluster then you shouldn't need this.

As far as using stateful sets: I wouldn't use that kind of resource for rocket.chat because it's not a stateful application. You could use them for the MongoDB replicaset though.