Common config repo

Our intention is to keep the latest and stable branches mostly in sync, but we'll always change latest before doing anything with stable.

To use one of these environments in your config repo, add each environment to your app of apps:

local app = {
  name: 'name-of-kubernetes-application-object',
  path: 'environments/thing-to-install',
  branch: 'latest', // or 'stable' if you want slower updates
},

apiVersion: 'argoproj.io/v1alpha1',
kind: 'Application',
metadata: { name: app.name },
spec: {
  project: 'default',
  destination: { server: 'https://kubernetes.default.svc' },
  syncPolicy: { automated: { prune: true, selfHeal: true } },
  source: {
    repoURL: 'https://github.com/mlibrary/kube-common',
    targetRevision: app.branch,
    path: '.',
    plugin: { env: [{
      name: 'TANKA_PATH',
      value: app.path,
    }]},
  },
},

Latest versus stable

Changes to the latest branch can happen anytime, but changes to the stable branch will always happen after an interval. So if you pull from latest in a workshop cluster and stable in a production cluster, then the change will happen in the workshop before it happens in production.

We should set up the stable branch to follow latest automatically, but right now, it's done manually:

git pull
git checkout stable
git rebase latest
git push -f
git checkout latest