Merge pull request #380 from leakingtapan/leader-elec

Enable leader election

aws-ebs-csi-driver/templates/manifest.yaml

@@ -14,7 +14,7 @@ metadata:
 rules:
   - apiGroups: [""]
     resources: ["persistentvolumes"]
-    verbs: ["get", "list", "watch", "create", "delete"]
+    verbs: ["list", "watch", "create", "delete"]
   - apiGroups: [""]
     resources: ["persistentvolumeclaims"]
     verbs: ["get", "list", "watch", "update"]
@@ -30,6 +30,9 @@ rules:
   - apiGroups: [""]
     resources: ["nodes"]
     verbs: ["get", "list", "watch"]
+  - apiGroups: ["coordination.k8s.io"]
+    resources: ["leases"]
+    verbs: ["get", "watch", "list", "delete", "update", "create"]
 
 ---
 
@@ -181,14 +184,13 @@ roleRef:
 
 ---
 
-kind: StatefulSet
+kind: Deployment
 apiVersion: apps/v1
 metadata:
   name: ebs-csi-controller
   namespace: kube-system
 spec:
-  serviceName: ebs-csi-controller
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app: ebs-csi-controller
@@ -253,6 +255,8 @@ spec:
             {{- if .Values.enableVolumeScheduling }}
             - --feature-gates=Topology=true
             {{- end}}
+            - --enable-leader-election
+            - --leader-election-type=leases
           env:
             - name: ADDRESS
               value: /var/lib/csi/sockets/pluginproxy/csi.sock

deploy/kubernetes/base/controller.yaml

@@ -1,13 +1,12 @@
 ---
 # Controller Service
-kind: StatefulSet
+kind: Deployment
 apiVersion: apps/v1
 metadata:
   name: ebs-csi-controller
   namespace: kube-system
 spec:
-  serviceName: ebs-csi-controller
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app: ebs-csi-controller
@@ -66,6 +65,8 @@ spec:
             - --csi-address=$(ADDRESS)
             - --v=5
             - --feature-gates=Topology=true
+            - --enable-leader-election
+            - --leader-election-type=leases
           env:
             - name: ADDRESS
               value: /var/lib/csi/sockets/pluginproxy/csi.sock

deploy/kubernetes/base/rbac.yaml

@@ -22,13 +22,16 @@ rules:
     verbs: ["get", "list", "watch"]
   - apiGroups: [""]
     resources: ["events"]
-    verbs: ["get", "list", "watch", "create", "update", "patch"]
+    verbs: ["list", "watch", "create", "update", "patch"]
   - apiGroups: ["storage.k8s.io"]
     resources: ["csinodes"]
     verbs: ["get", "list", "watch"]
   - apiGroups: [""]
     resources: ["nodes"]
     verbs: ["get", "list", "watch"]
+  - apiGroups: ["coordination.k8s.io"]
+    resources: ["leases"]
+    verbs: ["get", "watch", "list", "delete", "update", "create"]
 
 ---
 

deploy/kubernetes/overlays/alpha/controller_add_resizer.yaml

@@ -1,4 +1,4 @@
-kind: StatefulSet
+kind: Deployment
 apiVersion: apps/v1
 metadata:
   name: ebs-csi-controller

deploy/kubernetes/overlays/alpha/controller_add_snapshotter.yaml

@@ -1,4 +1,4 @@
-kind: StatefulSet
+kind: Deployment
 apiVersion: apps/v1
 metadata:
   name: ebs-csi-controller