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Table of Contents

  1. The Litmus ChaosOperator is seen to be in CrashLoopBackOff state immediately after installation?

  2. Litmus uninstallation is not successful and namespace is stuck in terminating state?

The Litmus ChaosOperator is seen to be in CrashLoopBackOff state immediately after installation?

Verify if the ChaosEngine custom resource definition (CRD) has been installed in the cluster. This can be verified with the following commands: 

kubectl get crds | grep chaos

kubectl api-resources | grep chaos

If not created, install it from here

Litmus uninstallation is not successful and namespace is stuck in terminating state?

Under typical operating conditions, the ChaosOperator makes use of finalizers to ensure that the ChaosEngine is deleted only after chaos resources (chaos-runner, experiment pod, any other helper pods) are removed.

When uninstalling Litmus via the operator manifest (which contains the namespace, operator, crd specifictions in a single YAML) without deleting the existing chaosengine resources first, the ChaosOperator deployment may get deleted before the CRD removal is attempted. Since the stale chaosengines have the finalizer present on them, their deletion (triggered by the CRD delete) and by consequence, the deletion of the chaosengine CRD itself is "stuck".

In such cases, manually remove the finalizer entries on the stale chaosengines to facilitate their successful delete. To get the chaosengine, run:

kubectl get chaosengine -n <namespace>

followed by:

kubectl edit chaosengine <chaosengine-name> -n <namespace> and remove the finalizer entry chaosengine.litmuschaos.io/finalizer

Repeat this on all the stale chaosengine CRs to remove the CRDs successfully & complete uninstallation process.

If however, the litmus namespace deletion remains stuck despite the above actions, follow the procedure described here to complete the uninstallation.