Mattermost on Kubernetes

This is a basic set of resources to get Mattermost running on Kubernetes. This currently does not support SSL but can be extended with an Ingress or the mattermost-web container.

Create a mattermost namespace:

$ kubectl create ns mattermost

Set the username and password for the PostgreSQL database:

$ kubectl create secret generic postgres-creds --from-literal=username=<yourusername> --from-literal=password=<yourpassword> --namespace=mattermost

Create the PostgreSQL DB and Service:

$ kubectl create -f mattermost_pg_svc.yaml
$ kubectl create -f mattermost_pg.yaml

Create the Frontend App and External Service:

$ kubectl create -f mattermost_app_svc.yaml
$ kubectl create -f mattermost_app.yaml

Grab the External IP and connect:

$ kubectl get svc --namespace=mattermost

Customisation

If you wish to have more control over the mattermost config then you can edit config.template.json and add it as a ConfigMap to be included in the app:

$ kubectl create configmap mattermost-config --from-file=./config.template.json --namespace=mattermost

The mm-config volumes will need to be uncommented/comment in mattermost_app.yaml so that the Configmap will be used. This will disable dynamic updates of the PostgreSQL URL so update to match the correct username/password/hostname.

If you are running in GCP, persistent disks can be enabled for the DB and App.