Garbage collection

Tanka can automatically delete resources from your cluster once you remove them from Jsonnet.

Caution

This feature is experimental. Please report problems at https://github.com/grafana/tanka/issues.

To accomplish this, it appends the tanka.dev/environment: <hash> label to each created resource. This is used to identify those which are missing from the local state in the future.

Note

The label value changed from the <name> to a <hash> in v0.15.0.

Because the label causes a diff for every single object in your cluster and not everybody wants this, it needs to be explicitly enabled. To do so, add the following field to your spec.json:

{
  "spec": {
    "injectLabels": true,
  }
}

Once added, run a tk apply, make sure the label is actually added and confirm by typing yes.

From now on, you can use tk prune to remove old resources from your cluster. You can also limit pruning to a single namespace, with tk prune --namespace <my-namespace>.