Manage policies with YAML

This section describes how to use YAML to manage existing policies in the following ways:

• Change which policy manages a workload

• Stop optimization of a workload

• Edit or delete a custom policy

There is also a table of common kubectl commands.

Change which policy manages a workload

To change the policy that manages a workload, edit the policy selectors on the current and the desired policy.

Tip

To avoid an unmanaged gap, add the workload to the new policy before removing it from the old policy.

Stop optimization of a workload

To stop optimizing a workload, remove the workload from policy selection, using the relevant solution:

• Remove it from the policy’s  appList selector.

• Update the policy label selector so it no longer matches the workload.

• Remove the policy annotation from the workload.

After removing, the workload may still be managed if it matches a different policy.

Edit or delete a custom policy

When you edit policy parameters, those changes will affect future orchestrations. Running workloads will not be affected until the next orchestration.

You can delete a custom policy only if it is not assigned to any active workloads.

If you attempt to delete a custom policy that is assigned to workloads, the delete operation is blocked with a validation error. The error indicates how many workloads are still assigned to the policy and provides a way to view which workloads they are.

To edit or delete a policy, update the policy YAML in the cluster.

Common kubectl commands

Replace the values inside [ ] with your values.

CRDs

• Pod rightsizing: policies.rightsizing.kompass.zesty.co

• Replica optimization: policies.horizontalscaling.kompass.zesty.co

Annotations

• Pod rightsizing: rightsizing.kompass.zesty.co/policy: <any rightsizing policy>

• Replica optimization: horizontalscaling.kompass.zesty.co/policy: <any rightsizing policy>