kube-controller-manager.manifest.patch

--- /etc/kubernetes/manifests/kube-controller-manager.manifest  2021-03-09 20:06:23.081318499 +0000
+++ /tmp/kube-controller-manager.manifest       2021-03-09 20:12:54.482769996 +0000
@@ -59,7 +59,11 @@
 "--allocate-node-cidrs=true",
 "--flex-volume-plugin-dir=/home/kubernetes/flexvolume",
 "--pv-recycler-pod-template-filepath-nfs=/home/kubernetes/kube-manifests/kubernetes/pv-recycler-template.yaml",
-"--pv-recycler-pod-template-filepath-hostpath=/home/kubernetes/kube-manifests/kubernetes/pv-recycler-template.yaml"
+"--pv-recycler-pod-template-filepath-hostpath=/home/kubernetes/kube-manifests/kubernetes/pv-recycler-template.yaml",
+"--feature-gates=ControllerManagerLeaderMigration=true",
+"--leader-elect=true",
+"--enable-leader-migration",
+"--leader-migration-config=/etc/leadermigration.conf"
                ],
     "env":[{"name": "KUBE_CACHE_MUTATION_DETECTOR", "value": "false"}],
     "livenessProbe": {
@@ -73,7 +77,8 @@
     },
     "volumeMounts": [
         {"name": "cloudconfigmount","mountPath": "/etc/gce.conf", "readOnly": true},
+        {"name": "lmconfigmount","mountPath": "/etc/leadermigration.conf", "readOnly": true},
         {"name": "pv-recycler-mount","mountPath": "/home/kubernetes/kube-manifests/kubernetes/pv-recycler-template.yaml", "readOnly": true},
         { "name": "srvkube",
         "mountPath": "/etc/srv/kubernetes",
@@ -102,7 +107,8 @@
 ],
 "volumes":[
   {"name": "cloudconfigmount","hostPath": {"path": "/etc/gce.conf", "type": "FileOrCreate"}},
+  {"name": "lmconfigmount","hostPath": {"path": "/etc/leadermigration.conf", "type": "FileOrCreate"}},
   {"name": "pv-recycler-mount","hostPath": {"path": "/home/kubernetes/kube-manifests/kubernetes/pv-recycler-template.yaml", "type": "FileOrCreate"}},
   { "name": "srvkube",
     "hostPath": {