Add cinder-backup service

cinder-backup binary is responsible for backing up volumes and snapshots
as well as restoring them. Without this service being deployed, we
cannot use those features.

This commit introduces the service into OpenStack-Helm.

Change-Id: I4ff5a56a77e5e10471a653ee1fbc3837de48ad38

cinder/templates/configmap-etc.yaml

@@ -98,7 +98,7 @@ data:
 {{- else -}}
 {{ tuple "etc/_policy.json.tpl" . | include "helm-toolkit.utils.template" | indent 4 }}
 {{- end }}
-{{- if include "cinder.is_ceph_configured" . -}}
+{{- if or (include "cinder.is_ceph_configured" .) (eq .Values.conf.cinder.default.cinder.backup_driver "cinder.backup.drivers.ceph") -}}
   ceph.conf: |+
 {{ if .Values.conf.ceph.override -}}
 {{ .Values.conf.ceph.override | indent 4 }}

cinder/templates/deployment-backup.yaml

@@ -0,0 +1,87 @@
+# Copyright 2017 The Openstack-Helm Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+{{- $envAll := . }}
+{{- $dependencies := .Values.dependencies.backup }}
+{{- $mounts_cinder_backup := .Values.mounts.cinder_backup.cinder_backup }}
+{{- $mounts_cinder_backup_init := .Values.mounts.cinder_backup.init_container }}
+
+apiVersion: apps/v1beta1
+kind: Deployment
+metadata:
+  name: cinder-backup
+spec:
+  replicas: {{ .Values.replicas.backup }}
+  revisionHistoryLimit: {{ .Values.upgrades.revision_history }}
+  strategy:
+    type: {{ .Values.upgrades.pod_replacement_strategy }}
+    {{ if eq .Values.upgrades.pod_replacement_strategy "RollingUpdate" }}
+    rollingUpdate:
+      maxUnavailable: {{ .Values.upgrades.rolling_update.max_unavailable }}
+      maxSurge: {{ .Values.upgrades.rolling_update.max_surge }}
+    {{ end }}
+  template:
+    metadata:
+      labels:
+        app: cinder-backup
+      annotations:
+        configmap-bin-hash: {{ tuple "configmap-bin.yaml" . | include "helm-toolkit.utils.hash" }}
+        configmap-etc-hash: {{ tuple "configmap-etc.yaml" . | include "helm-toolkit.utils.hash" }}
+        pod.beta.kubernetes.io/init-containers: '[
+{{ tuple $envAll $dependencies $mounts_cinder_backup_init | include "helm-toolkit.snippets.kubernetes_entrypoint_init_container" | indent 10 }}
+        ]'
+    spec:
+      nodeSelector:
+        {{ .Values.labels.node_selector_key }}: {{ .Values.labels.node_selector_value }}
+      containers:
+        - name: cinder-backup
+          image: {{ .Values.images.backup }}
+          imagePullPolicy: {{ .Values.images.pull_policy }}
+          {{- if .Values.resources.enabled }}
+          resources:
+            requests:
+              memory: {{ .Values.resources.cinder_backup.requests.memory | quote }}
+              cpu: {{ .Values.resources.cinder_backup.requests.cpu | quote }}
+            limits:
+              memory: {{ .Values.resources.cinder_backup.limits.memory | quote }}
+              cpu: {{ .Values.resources.cinder_backup.limits.cpu | quote }}
+          {{- end }}
+          command:
+          - cinder-backup
+          - --config-dir
+          - /etc/cinder/conf
+          volumeMounts:
+            - name: pod-var-cache-cinder
+              mountPath: /var/cache/cinder
+            - name: cinder-etc
+              mountPath: /etc/cinder/conf/cinder.conf
+              subPath: cinder.conf
+              readOnly: true
+            {{- if eq .Values.conf.cinder.default.cinder.backup_driver "cinder.backup.drivers.ceph" }}
+            - name: cinder-etc
+              mountPath: /etc/ceph/ceph.conf
+              subPath: ceph.conf
+              readOnly: true
+            - name: cinder-etc
+              mountPath: /etc/ceph/ceph.client.{{ .Values.conf.backends.rbd1.rbd_user }}.keyring
+              subPath: ceph.client.{{ .Values.conf.backends.rbd1.rbd_user }}.keyring
+              readOnly: true
+            {{- end -}}
+{{ if $mounts_cinder_backup.volumeMounts }}{{ toYaml $mounts_cinder_backup.volumeMounts | indent 12 }}{{ end }}
+      volumes:
+        - name: pod-var-cache-cinder
+          emptyDir: {}
+        - name: cinder-etc
+          configMap:
+            name: cinder-etc
+{{ if $mounts_cinder_backup.volumes }}{{ toYaml $mounts_cinder_backup.volumes | indent 8 }}{{ end }}

cinder/values.yaml

@@ -21,6 +21,7 @@ replicas:
   api: 1
   volume: 1
   scheduler: 1
+  backup: 1
 
 labels:
   node_selector_key: openstack-control-plane
@@ -35,6 +36,7 @@ images:
   api: docker.io/kolla/ubuntu-source-cinder-api:3.0.3
   scheduler: docker.io/kolla/ubuntu-source-cinder-scheduler:3.0.3
   volume: docker.io/kolla/ubuntu-source-cinder-volume:3.0.3
+  backup: docker.io/kolla/ubuntu-source-cinder-backup:3.0.3
   dep_check: docker.io/kolla/ubuntu-source-kubernetes-entrypoint:4.0.0
   pull_policy: "IfNotPresent"
 
@@ -103,6 +105,10 @@ conf:
         host: cinder-volume-worker
         osapi_volume_listen_port: 8776
         enabled_backends: "rbd1"
+        backup_driver: "cinder.backup.drivers.ceph"
+        backup_ceph_conf: "/etc/ceph/ceph.conf"
+        backup_ceph_user: admin
+        backup_ceph_pool: backups
     keystone_authtoken:
       keystonemiddleware:
         auth_token:
@@ -177,6 +183,14 @@ dependencies:
     service:
     - keystone-api
     - cinder-api
+  volume:
+    jobs:
+    - cinder-db-sync
+    - cinder-ks-user
+    - cinder-ks-endpoints
+    service:
+    - keystone-api
+    - cinder-api
 
 # We use a different layout of the endpoints here to account for versioning
 # this swaps the service name and type, and should be rolled out to other
@@ -281,6 +295,13 @@ resources:
     limits:
       memory: "1024Mi"
       cpu: "2000m"
+  cinder_backup:
+    requests:
+      memory: "124Mi"
+      cpu: "100m"
+    limits:
+      memory: "1024Mi"
+      cpu: "2000m"
   cinder_db_init:
     requests:
       memory: "124Mi"
@@ -327,3 +348,6 @@ mounts:
   cinder_volume:
     init_container: null
     cinder_volume:
+  cinder_backup:
+    init_container: null
+    cinder_backup: