make all static system pods critical

cluster/addons/etcd-empty-dir-cleanup/etcd-empty-dir-cleanup.yaml

@@ -3,6 +3,8 @@ kind: Pod
 metadata:
   name: etcd-empty-dir-cleanup
   namespace: kube-system
+  annotations:
+    scheduler.alpha.kubernetes.io/critical-pod: ''
   labels:
     k8s-app: etcd-empty-dir-cleanup
 spec:

cluster/saltbase/salt/etcd/etcd.manifest

@@ -29,7 +29,10 @@
 "kind": "Pod",
 "metadata": {
   "name":"etcd-server{{ suffix }}",
-  "namespace": "kube-system"
+  "namespace": "kube-system",
+  "annotations": {
+    "scheduler.alpha.kubernetes.io/critical-pod": ""
+  }
 },
 "spec":{
 "hostNetwork": true,

cluster/saltbase/salt/kube-addons/kube-addon-manager.yaml

@@ -3,6 +3,8 @@ kind: Pod
 metadata:
   name: kube-addon-manager
   namespace: kube-system
+  annotations:
+    scheduler.alpha.kubernetes.io/critical-pod: ''
   labels:
     component: kube-addon-manager
 spec:

cluster/saltbase/salt/kube-apiserver/kube-apiserver.manifest

@@ -212,6 +212,9 @@
 "metadata": {
   "name":"kube-apiserver",
   "namespace": "kube-system",
+  "annotations": {
+    "scheduler.alpha.kubernetes.io/critical-pod": ""
+  },
   "labels": {
     "tier": "control-plane",
     "component": "kube-apiserver"

cluster/saltbase/salt/kube-controller-manager/kube-controller-manager.manifest

@@ -94,6 +94,9 @@
 "metadata": {
   "name":"kube-controller-manager",
   "namespace": "kube-system",
+  "annotations": {
+    "scheduler.alpha.kubernetes.io/critical-pod": ""
+  },
   "labels": {
     "tier": "control-plane",
     "component": "kube-controller-manager"

cluster/saltbase/salt/kube-scheduler/kube-scheduler.manifest

@@ -29,6 +29,9 @@
 "metadata": {
   "name":"kube-scheduler",
   "namespace": "kube-system",
+  "annotations": {
+    "scheduler.alpha.kubernetes.io/critical-pod": ""
+  },
   "labels": {
     "tier": "control-plane",
     "component": "kube-scheduler"

cluster/saltbase/salt/l7-gcp/glbc.manifest

@@ -3,6 +3,8 @@ kind: Pod
 metadata:
   name: l7-lb-controller-v0.9.3
   namespace: kube-system
+  annotations:
+    scheduler.alpha.kubernetes.io/critical-pod: ''
   labels:
     k8s-app: glbc
     version: v0.9.3

cluster/saltbase/salt/rescheduler/rescheduler.manifest

@@ -3,6 +3,8 @@ kind: Pod
 metadata:
   name: rescheduler-v0.3.0
   namespace: kube-system
+  annotations:
+    scheduler.alpha.kubernetes.io/critical-pod: ''
   labels:
     k8s-app: rescheduler
     version: v0.3.0

cmd/kubeadm/app/master/BUILD

@@ -25,6 +25,7 @@ go_library(
         "//pkg/bootstrap/api:go_default_library",
         "//pkg/kubeapiserver/authorizer/modes:go_default_library",
         "//pkg/kubectl/cmd/util:go_default_library",
+        "//pkg/kubelet/types:go_default_library",
         "//pkg/util/version:go_default_library",
         "//vendor/github.com/ghodss/yaml:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/api/resource:go_default_library",

cmd/kubeadm/app/master/manifests.go

@@ -37,6 +37,7 @@ import (
 	bootstrapapi "k8s.io/kubernetes/pkg/bootstrap/api"
 	authzmodes "k8s.io/kubernetes/pkg/kubeapiserver/authorizer/modes"
 	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
+	kubetypes "k8s.io/kubernetes/pkg/kubelet/types"
 	"k8s.io/kubernetes/pkg/util/version"
 )
 
@@ -300,9 +301,10 @@ func componentPod(container api.Container, volumes ...api.Volume) api.Pod {
 			Kind:       "Pod",
 		},
 		ObjectMeta: metav1.ObjectMeta{
-			Name:      container.Name,
+			Name:        container.Name,
-			Namespace: "kube-system",
+			Namespace:   "kube-system",
-			Labels:    map[string]string{"component": container.Name, "tier": "control-plane"},
+			Annotations: map[string]string{kubetypes.CriticalPodAnnotationKey: ""},
+			Labels:      map[string]string{"component": container.Name, "tier": "control-plane"},
 		},
 		Spec: api.PodSpec{
 			Containers:  []api.Container{container},