democratic-csi: Enable volume resize

_democratic-csi_ can also dynamically resize Synology iSCSI LUNs when
PVC resource requests increase.  This requires enabling the external
resizer in the controller pod and marking the StorageClass as supporting
resize.

argocd/applications/csi-synology.yaml

@@ -1,7 +1,7 @@
 apiVersion: argoproj.io/v1alpha1
 kind: Application
 metadata:
-  name: democratic-csi
+  name: csi-synology
   namespace: argocd
 spec:
   destination:

democratic-csi/democratic-csi.yaml

@@ -270,6 +270,66 @@ spec:
             fieldRef:
               apiVersion: v1
               fieldPath: metadata.name
+      - name: external-resizer
+        image: "registry.k8s.io/sig-storage/csi-resizer:v1.9.0"
+        args:
+        - --v=5
+        - --leader-election
+        - --leader-election-namespace=democratic-csi
+        - --timeout=90s
+        - --workers=10
+        - --csi-address=/csi-data/csi.sock
+        volumeMounts:
+        - mountPath: /csi-data
+          name: socket-dir
+        env:
+        - name: NODE_NAME
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: spec.nodeName
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.namespace
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.name
+      # https://github.com/kubernetes-csi/external-snapshotter
+      # beware upgrading version:
+      #  - https://github.com/rook/rook/issues/4178
+      #  - https://github.com/kubernetes-csi/external-snapshotter/issues/147#issuecomment-513664310
+      - name: external-snapshotter
+        image: "registry.k8s.io/sig-storage/csi-snapshotter:v8.2.1"
+        args:
+        - --v=5
+        - --leader-election
+        - --leader-election-namespace=democratic-csi
+        - --timeout=90s
+        - --worker-threads=10
+        - --csi-address=/csi-data/csi.sock
+        volumeMounts:
+        - mountPath: /csi-data
+          name: socket-dir
+        env:
+        - name: NODE_NAME
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: spec.nodeName
+        - name: NAMESPACE
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.namespace
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              apiVersion: v1
+              fieldPath: metadata.name
       - name: csi-driver
         image: docker.io/democraticcsi/democratic-csi:latest
         args:

democratic-csi/secrets.yaml

@@ -4,6 +4,10 @@ kind: SealedSecret
 metadata:
   name: csi-synology-democratic-csi-driver-config
   namespace: democratic-csi
+  labels: &labels
+    app.kubernetes.io/name: synology-iscsi-driver-config
+    app.kubernetes.io/component: democratic-csi
+    app.kubernetes.io/part-of: democratic-csi
 spec:
   encryptedData:
     synology.password: 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
@@ -33,11 +37,14 @@ spec:
             max_sessions: 0  # 0: Unlimited
             chap: true
             mutual_chap: true
+          lunSnapshotTemplate:
+            is_app_consistent: true
+            is_locked: true
+
 ---
 apiVersion: bitnami.com/v1alpha1
 kind: SealedSecret
 metadata:
-  creationTimestamp: null
   name: synology-iscsi-provisioner
   namespace: democratic-csi
 spec:
@@ -45,14 +52,13 @@ spec:
     targetTemplate: 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
   template:
     metadata:
-      creationTimestamp: null
       name: synology-iscsi-provisioner
       namespace: democratic-csi
+
 ---
 apiVersion: bitnami.com/v1alpha1
 kind: SealedSecret
 metadata:
-  creationTimestamp: null
   name: synology-iscsi-chap
   namespace: democratic-csi
 spec:
@@ -63,6 +69,5 @@ spec:
     node-db.node.session.auth.username_in: 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
   template:
     metadata:
-      creationTimestamp: null
       name: synology-iscsi-chap
       namespace: democratic-csi

democratic-csi/storageclass.yaml

@@ -2,6 +2,7 @@ apiVersion: storage.k8s.io/v1
 kind: StorageClass
 metadata:
   name: synology-iscsi
+allowVolumeExpansion: true
 provisioner: org.democratic-csi.iscsi-synology
 parameters:
   fsType: xfs
@@ -9,3 +10,11 @@ parameters:
   csi.storage.k8s.io/provisioner-secret-namespace: democratic-csi
   csi.storage.k8s.io/node-stage-secret-name: synology-iscsi-chap
   csi.storage.k8s.io/node-stage-secret-namespace: democratic-csi
+
+---
+apiVersion: snapshot.storage.k8s.io/v1
+kind: VolumeSnapshotClass
+metadata:
+  name: synology-iscsi
+driver: org.democratic-csi.iscsi-synology
+deletionPolicy: Delete

snapshot-controller/kustomization.yaml

@@ -0,0 +1,8 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: kube-system
+
+resources:
+- https://github.com/kubernetes-csi/external-snapshotter//client/config/crd?ref=v8.3.0
+- https://github.com/kubernetes-csi/external-snapshotter//deploy/kubernetes/snapshot-controller?ref=v8.3.0