Merge pull request #234 from andyzhangx/liveness-linux

feat: add registrar liveness probe

charts/latest/csi-driver-nfs/templates/csi-nfs-node.yaml

@@ -56,6 +56,14 @@ spec:
             preStop:
               exec:
                 command: ["/bin/sh", "-c", "rm -rf /registration/csi-nfsplugin /registration/csi-nfsplugin-reg.sock"]
+          livenessProbe:
+            exec:
+              command:
+                - /csi-node-driver-registrar
+                - --kubelet-registration-path=$(DRIVER_REG_SOCK_PATH)
+                - --mode=kubelet-registration-probe
+            initialDelaySeconds: 30
+            timeoutSeconds: 15
           args:
             - --v=2
             - --csi-address=/csi/csi.sock

deploy/csi-nfs-node.yaml

@@ -53,6 +53,14 @@ spec:
             - --v=2
             - --csi-address=/csi/csi.sock
             - --kubelet-registration-path=$(DRIVER_REG_SOCK_PATH)
+          livenessProbe:
+            exec:
+              command:
+                - /csi-node-driver-registrar
+                - --kubelet-registration-path=$(DRIVER_REG_SOCK_PATH)
+                - --mode=kubelet-registration-probe
+            initialDelaySeconds: 30
+            timeoutSeconds: 15
           env:
             - name: DRIVER_REG_SOCK_PATH
               value: /var/lib/kubelet/plugins/csi-nfsplugin/csi.sock

pkg/nfs/nodeserver.go

@@ -149,8 +149,7 @@ func (ns *NodeServer) NodeGetVolumeStats(ctx context.Context, req *csi.NodeGetVo
 		return nil, status.Error(codes.InvalidArgument, "NodeGetVolumeStats volume path was empty")
 	}
 
-	_, err := os.Stat(req.VolumePath)
-	if err != nil {
+	if _, err := os.Lstat(req.VolumePath); err != nil {
 		if os.IsNotExist(err) {
 			return nil, status.Errorf(codes.NotFound, "path %s does not exist", req.VolumePath)
 		}