rbd: get default plugin path

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>

charts/ceph-csi-rbd/templates/nodeplugin-daemonset.yaml

@@ -65,6 +65,7 @@ spec:
           imagePullPolicy: {{ .Values.nodeplugin.plugin.image.pullPolicy }}
           args:
             - "--nodeid=$(NODE_ID)"
+            - "--pluginpath={{ .Values.kubeletDir }}/plugins"
             - "--type=rbd"
             - "--nodeserver=true"
             - "--pidlimit=-1"

cmd/cephcsi.go

@@ -48,6 +48,8 @@ const (
 
 	// use default namespace if namespace is not set.
 	defaultNS = "default"
+
+	defaultPluginPath = "/var/lib/kubelet/plugins"
 )
 
 var conf util.Config
@@ -59,6 +61,7 @@ func init() {
 	flag.StringVar(&conf.DriverName, "drivername", "", "name of the driver")
 	flag.StringVar(&conf.DriverNamespace, "drivernamespace", defaultNS, "namespace in which driver is deployed")
 	flag.StringVar(&conf.NodeID, "nodeid", "", "node id")
+	flag.StringVar(&conf.PluginPath, "pluginpath", defaultPluginPath, "plugin path")
 	flag.StringVar(&conf.InstanceID, "instanceid", "", "Unique ID distinguishing this instance of Ceph CSI among other"+
 		" instances, when sharing Ceph clusters across CSI instances for provisioning")
 	flag.IntVar(&conf.PidLimit, "pidlimit", 0, "the PID limit to configure through cgroups")

deploy/rbd/kubernetes/csi-rbdplugin.yaml

@@ -51,6 +51,7 @@ spec:
           image: quay.io/cephcsi/cephcsi:canary
           args:
             - "--nodeid=$(NODE_ID)"
+            - "--pluginpath=/var/lib/kubelet/plugins"
             - "--type=rbd"
             - "--nodeserver=true"
             - "--endpoint=$(CSI_ENDPOINT)"