control plane components derived from static pods must be marked critical

roles/etcd/files/etcd.yaml

@@ -6,6 +6,8 @@ metadata:
   labels:
     openshift.io/control-plane: "true"
     openshift.io/component: etcd
+  annotations:
+    scheduler.alpha.kubernetes.io/critical-pod: ''
 spec:
   restartPolicy: Always
   hostNetwork: true

roles/openshift_control_plane/files/apiserver.yaml

@@ -6,6 +6,8 @@ metadata:
   labels:
     openshift.io/control-plane: "true"
     openshift.io/component: api
+  annotations:
+    scheduler.alpha.kubernetes.io/critical-pod: ''
 spec:
   restartPolicy: Always
   hostNetwork: true

roles/openshift_control_plane/files/controller.yaml

@@ -6,6 +6,8 @@ metadata:
   labels:
     openshift.io/control-plane: "true"
     openshift.io/component: controllers
+  annotations:
+    scheduler.alpha.kubernetes.io/critical-pod: ''
 spec:
   restartPolicy: Always
   hostNetwork: true