parameterized snaphot controller namespaces (#8305)

* Parameterized snaphot controller namespaces

* add ns yml

* add docs

* namespace

inventory/sample/group_vars/k8s_cluster/addons.yml

@@ -57,6 +57,8 @@ local_volume_provisioner_enabled: false
 # currently, setting cinder_csi_enabled=true would automatically enable the snapshot controller
 # Longhorn is an extenal CSI that would also require setting this to true but it is not included in kubespray
 # csi_snapshot_controller_enabled: false
+# csi snapshot namespace
+# snapshot_controller_namespace: kube-system
 
 # CephFS provisioner deployment
 cephfs_provisioner_enabled: false

roles/kubernetes-apps/snapshots/snapshot-controller/defaults/main.yml

 ---
 snapshot_controller_replicas: 1
+snapshot_controller_namespace: kube-system

roles/kubernetes-apps/snapshots/snapshot-controller/tasks/main.yml

@@ -5,6 +5,7 @@
     dest: "{{ kube_config_dir }}/{{ item.file }}"
     mode: 0644
   with_items:
+    - {name: snapshot-ns, file: snapshot-ns.yml}
     - {name: rbac-snapshot-controller, file: rbac-snapshot-controller.yml}
     - {name: snapshot-controller, file: snapshot-controller.yml}
   register: snapshot_controller_manifests

roles/kubernetes-apps/snapshots/snapshot-controller/templates/rbac-snapshot-controller.yml.j2

@@ -9,7 +9,7 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: snapshot-controller
-  namespace: kube-system
+  namespace: {{ snapshot_controller_namespace }}
 
 ---
 kind: ClusterRole
@@ -51,7 +51,7 @@ metadata:
 subjects:
   - kind: ServiceAccount
     name: snapshot-controller
-    namespace: kube-system
+    namespace: {{ snapshot_controller_namespace }}
 roleRef:
   kind: ClusterRole
   # change the name also here if the ClusterRole gets renamed
@@ -62,7 +62,7 @@ roleRef:
 kind: Role
 apiVersion: rbac.authorization.k8s.io/v1
 metadata:
-  namespace: kube-system
+  namespace: {{ snapshot_controller_namespace }}
   name: snapshot-controller-leaderelection
 rules:
 - apiGroups: ["coordination.k8s.io"]
@@ -74,11 +74,11 @@ kind: RoleBinding
 apiVersion: rbac.authorization.k8s.io/v1
 metadata:
   name: snapshot-controller-leaderelection
-  namespace: kube-system
+  namespace: {{ snapshot_controller_namespace }}
 subjects:
   - kind: ServiceAccount
     name: snapshot-controller
-    namespace: kube-system
+    namespace: {{ snapshot_controller_namespace }}
 roleRef:
   kind: Role
   name: snapshot-controller-leaderelection

roles/kubernetes-apps/snapshots/snapshot-controller/templates/snapshot-controller.yml.j2

@@ -10,7 +10,7 @@ kind: Deployment
 apiVersion: apps/v1
 metadata:
   name: snapshot-controller
-  namespace: kube-system
+  namespace: {{ snapshot_controller_namespace }}
 spec:
   replicas: {{ snapshot_controller_replicas }}
   selector:

roles/kubernetes-apps/snapshots/snapshot-controller/templates/snapshot-ns.yml.j2

+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: {{ snapshot_controller_namespace }}
+  labels:
+    name: {{ snapshot_controller_namespace }}