Adding leader election to controllers in staging rc

Author: verult

deploy/kubernetes/overlays/prow-gke-release-staging-rc/enable-leader-election.yaml

@@ -0,0 +1,74 @@
+# for external-provisioner
+- op: add
+  path: /spec/template/spec/containers/0/args/-
+  value: "--enable-leader-election"
+
+- op: add
+  path: /spec/template/spec/containers/0/args/-
+  value: "--leader-election-type=leases"
+
+- op: add
+  path: /spec/template/spec/containers/0/args/-
+  value: "--leader-election-namespace=$(PDCSI_NAMESPACE)"
+
+- op: add
+  path: /spec/template/spec/containers/0/env
+  value:
+  - name: PDCSI_NAMESPACE
+    valueFrom:
+      fieldRef:
+        fieldPath: metadata.namespace
+    
+
+# # for external-attacher
+- op: add
+  path: /spec/template/spec/containers/1/args/-
+  value: "--leader-election"
+
+- op: add
+  path: /spec/template/spec/containers/1/args/-
+  value: "--leader-election-namespace=$(PDCSI_NAMESPACE)"
+
+- op: add
+  path: /spec/template/spec/containers/1/env
+  value:
+  - name: PDCSI_NAMESPACE
+    valueFrom:
+      fieldRef:
+        fieldPath: metadata.namespace
+
+
+# # for external-resizer
+- op: add
+  path: /spec/template/spec/containers/2/args/-
+  value: "--leader-election"
+
+- op: add
+  path: /spec/template/spec/containers/2/args/-
+  value: "--leader-election-namespace=$(PDCSI_NAMESPACE)"
+
+- op: add
+  path: /spec/template/spec/containers/2/env
+  value:
+  - name: PDCSI_NAMESPACE
+    valueFrom:
+      fieldRef:
+        fieldPath: metadata.namespace
+
+
+# for external-snapshotter
+- op: add
+  path: /spec/template/spec/containers/3/args/-
+  value: "--leader-election"
+
+- op: add
+  path: /spec/template/spec/containers/3/args/-
+  value: "--leader-election-namespace=$(PDCSI_NAMESPACE)"
+
+- op: add
+  path: /spec/template/spec/containers/3/env
+  value:
+  - name: PDCSI_NAMESPACE
+    valueFrom:
+      fieldRef:
+        fieldPath: metadata.namespace

deploy/kubernetes/overlays/prow-gke-release-staging-rc/kustomization.yaml

@@ -21,3 +21,20 @@ images:
 - name: gke.gcr.io/csi-snapshotter
   newName: gcr.io/gke-release-staging/csi-snapshotter
   newTag: "v2.1.1-gke.0"
+
+resources:
+- leader-election-rbac.yaml
+
+patchesJson6902:	
+- target:	
+    group: apps	
+    version: v1	
+    kind: StatefulSet	
+    name: csi-gce-pd-controller	
+  path: enable-leader-election.yaml
+- target:	
+    group: apps	
+    version: v1	
+    kind: StatefulSet	
+    name: csi-gce-pd-controller	
+  path: statefulset-to-deployment.yaml

deploy/kubernetes/overlays/prow-gke-release-staging-rc/leader-election-rbac.yaml

@@ -0,0 +1,26 @@
+kind: Role
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: csi-gce-pd-leaderelection-role
+  namespace: gce-pd-csi-driver
+  labels:
+    k8s-app: gcp-compute-persistent-disk-csi-driver
+rules:
+- apiGroups: ["coordination.k8s.io"]
+  resources: ["leases"]
+  verbs: ["get", "watch", "list", "delete", "update", "create"]
+---
+kind: RoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: csi-gce-pd-controller-leaderelection-binding
+  namespace: gce-pd-csi-driver
+  labels:
+    k8s-app: gcp-compute-persistent-disk-csi-driver
+subjects:
+- kind: ServiceAccount
+  name: csi-gce-pd-controller-sa
+roleRef:
+  kind: Role
+  name: csi-gce-pd-leaderelection-role
+  apiGroup: rbac.authorization.k8s.io