// but not yet healthy can be evicted only if the guarded application is not
  // disrupted (status.currentHealthy is at least equal to status.desiredHealthy).
  // Healthy pods will be subject to the PDB for eviction.
  //
  // AlwaysAllow policy means that all running pods (status.phase="Running"),
  // but not yet healthy are considered disrupted and can be evicted regardless

		Use:   "remove <revision-tag>",
		Short: "Remove Istio control plane revision tag",
		Long: `Remove Istio control plane revision tag.

Removing a revision tag should be done with care. Removing a revision tag will disrupt sidecar injection in namespaces
that reference the tag in an "istio.io/rev" label. Verify that there are no remaining namespaces referencing a
revision tag before removing using the "istioctl tag list" command.
`,

DaemonSet objects you created in 1.1 won’t work with in the 1.2 release.
     * Before upgrading to 1.2, <strong>delete all DaemonSet alpha-version resources</strong>. If you do not want to disrupt the pods, use kubectl delete daemonset <name>
--cascade=false. Then create DaemonSet Beta resources after upgrading to 1.2.
     * Client (kubectl) and server versions must match (both 1.1 or both 1.2) for any