helm: make kubelet path configurable

removed unwanted extra arguments from the helm templates
and added a single value kubeletDir to make the kubelet
root-dir configurable.

previously used variables like socketDir,registrationDir
and pluginDir is removed now because if we have the kubelet
path we can derive all other required path for cephcsi to
work properly.

fixes: #1475

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

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

@@ -43,7 +43,7 @@ spec:
           args:
             - "--v={{ .Values.logLevel }}"
             - "--csi-address=/csi/{{ .Values.pluginSocketFile }}"
-            - "--kubelet-registration-path={{ .Values.socketDir }}/{{ .Values.pluginSocketFile }}"
+            - "--kubelet-registration-path={{ .Values.kubeletDir }}/{{ .Values.driverName }}/{{ .Values.pluginSocketFile }}"
           env:
             - name: KUBE_NODE_NAME
               valueFrom:
@@ -95,10 +95,10 @@ spec:
             - name: socket-dir
               mountPath: /csi
             - name: mountpoint-dir
-              mountPath: /var/lib/kubelet/pods
+              mountPath: {{ .Values.kubeletDir }}/pods
               mountPropagation: Bidirectional
             - name: plugin-dir
-              mountPath: /var/lib/kubelet/plugins
+              mountPath: {{ .Values.kubeletDir }}/plugins
               mountPropagation: "Bidirectional"
             - mountPath: /dev
               name: host-dev
@@ -144,19 +144,19 @@ spec:
       volumes:
         - name: socket-dir
           hostPath:
-            path: {{ .Values.socketDir }}
+            path: "{{ .Values.kubeletDir }}/{{ .Values.driverName }}"
             type: DirectoryOrCreate
         - name: registration-dir
           hostPath:
-            path: {{ .Values.registrationDir }}
+            path: {{ .Values.kubeletDir }}/plugins_registry
             type: Directory
         - name: mountpoint-dir
           hostPath:
-            path: /var/lib/kubelet/pods
+            path: {{ .Values.kubeletDir }}/pods
             type: DirectoryOrCreate
         - name: plugin-dir
           hostPath:
-            path: /var/lib/kubelet/plugins
+            path: {{ .Values.kubeletDir }}/plugins
             type: Directory
         - name: host-sys
           hostPath:

charts/ceph-csi-cephfs/templates/nodeplugin-psp.yaml

@@ -40,12 +40,6 @@ spec:
       readOnly: false
     - pathPrefix: '/lib/modules'
       readOnly: true
-    - pathPrefix: '/var/lib/kubelet/pods'
-      readOnly: false
-    - pathPrefix: '{{ .Values.socketDir }}'
-      readOnly: false
-    - pathPrefix: '{{ .Values.registrationDir }}'
-      readOnly: false
-    - pathPrefix: '{{ .Values.pluginDir }}'
+    - pathPrefix: '{{ .Values.kubeletDir }}'
       readOnly: false
 {{- end }}

charts/ceph-csi-cephfs/values.yaml

@@ -195,16 +195,12 @@ topology:
 # Variables for 'internal' use please use with caution! #
 #########################################################
 
-# The directory where the provisioner and pluginSocketFile will be mounted
-socketDir: /var/lib/kubelet/plugins/cephfs.csi.ceph.com
 # The filename of the provisioner socket
 provisionerSocketFile: csi-provisioner.sock
 # The filename of the plugin socket
 pluginSocketFile: csi.sock
-# The directory where nodeplugin socket is created
-registrationDir: /var/lib/kubelet/plugins_registry
-# The nodeplugin plugins directory
-pluginDir: /var/lib/kubelet/plugins
+# kubelet working directory,can be set using `--root-dir` when starting kubelet.
+kubeletDir: /var/lib/kubelet
 # Name of the csi-driver
 driverName: cephfs.csi.ceph.com
 # Name of the configmap used for state

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

@@ -44,7 +44,7 @@ spec:
           args:
             - "--v={{ .Values.logLevel }}"
             - "--csi-address=/csi/{{ .Values.pluginSocketFile }}"
-            - "--kubelet-registration-path={{ .Values.socketDir }}/{{ .Values.pluginSocketFile }}"
+            - "--kubelet-registration-path={{ .Values.kubeletDir }}/{{ .Values.driverName }}/{{ .Values.pluginSocketFile }}"
           env:
             - name: KUBE_NODE_NAME
               valueFrom:
@@ -106,10 +106,10 @@ spec:
             - name: ceph-csi-encryption-kms-config
               mountPath: /etc/ceph-csi-encryption-kms-config/
             - name: plugin-dir
-              mountPath: /var/lib/kubelet/plugins
+              mountPath: {{ .Values.kubeletDir }}/plugins
               mountPropagation: "Bidirectional"
             - name: mountpoint-dir
-              mountPath: /var/lib/kubelet/pods
+              mountPath: {{ .Values.kubeletDir }}/pods
               mountPropagation: "Bidirectional"
             - name: keys-tmp-dir
               mountPath: /tmp/csi/keys
@@ -144,19 +144,19 @@ spec:
       volumes:
         - name: socket-dir
           hostPath:
-            path: {{ .Values.socketDir }}
+            path: "{{ .Values.kubeletDir }}/{{ .Values.driverName }}"
             type: DirectoryOrCreate
         - name: registration-dir
           hostPath:
-            path: {{ .Values.registrationDir }}
+            path: {{ .Values.kubeletDir }}/plugins_registry
             type: Directory
         - name: plugin-dir
           hostPath:
-            path: {{ .Values.pluginDir }}
+            path: {{ .Values.kubeletDir }}/plugins
             type: Directory
         - name: mountpoint-dir
           hostPath:
-            path: /var/lib/kubelet/pods
+            path: {{ .Values.kubeletDir }}/pods
             type: DirectoryOrCreate
         - name: host-dev
           hostPath:

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

@@ -40,12 +40,6 @@ spec:
       readOnly: false
     - pathPrefix: '/lib/modules'
       readOnly: true
-    - pathPrefix: '/var/lib/kubelet/pods'
-      readOnly: false
-    - pathPrefix: '{{ .Values.socketDir }}'
-      readOnly: false
-    - pathPrefix: '{{ .Values.registrationDir }}'
-      readOnly: false
-    - pathPrefix: '{{ .Values.pluginDir }}'
+    - pathPrefix: '{{ .Values.kubeletDir }}'
       readOnly: false
 {{- end }}

charts/ceph-csi-rbd/values.yaml

@@ -219,16 +219,12 @@ topology:
 # Variables for 'internal' use please use with caution! #
 #########################################################
 
-# The directory where the provisioner and pluginSocketFile will be mounted
-socketDir: /var/lib/kubelet/plugins/rbd.csi.ceph.com
 # The filename of the provisioner socket
 provisionerSocketFile: csi-provisioner.sock
 # The filename of the plugin socket
 pluginSocketFile: csi.sock
-# The directory where nodeplugin socket is created
-registrationDir: /var/lib/kubelet/plugins_registry
-# The nodeplugin plugins directory
-pluginDir: /var/lib/kubelet/plugins
+# kubelet working directory,can be set using `--root-dir` when starting kubelet.
+kubeletDir: /var/lib/kubelet
 # Name of the csi-driver
 driverName: rbd.csi.ceph.com
 # Name of the configmap used for state