7.5. 执行备份

流程

1. 创建工作负载以备份：

   $ oc create namespace hello-world
   $ oc new-app -n hello-world --image=docker.io/openshift/hello-openshift

2. 公开路由：

   $ oc expose service/hello-openshift -n hello-world

3. 检查应用程序是否正常工作：

   $ curl `oc get route/hello-openshift -n hello-world -o jsonpath='{.spec.host}'`

   输出示例

   Hello OpenShift!

4. 备份工作负载：

   $ cat << EOF | oc create -f -
   apiVersion: velero.io/v1
   kind: Backup
   metadata:
    name: hello-world
    namespace: openshift-adp
   spec:
    includedNamespaces:
    - hello-world
    storageLocation: ${CLUSTER_NAME}-dpa-1
    ttl: 720h0m0s
   EOF

5. 等待备份完成：

   $ watch "oc -n openshift-adp get backup hello-world -o json | jq .status"

   输出示例

   {
    "completionTimestamp": "2022-09-07T22:20:44Z",
    "expiration": "2022-10-07T22:20:22Z",
    "formatVersion": "1.1.0",
    "phase": "Completed",
    "progress": {
      "itemsBackedUp": 58,
      "totalItems": 58
    },
    "startTimestamp": "2022-09-07T22:20:22Z",
    "version": 1
   }

6. 删除演示工作负载：

   $ oc delete ns hello-world

7. 从备份中恢复：

   $ cat << EOF | oc create -f -
   apiVersion: velero.io/v1
   kind: Restore
   metadata:
    name: hello-world
    namespace: openshift-adp
   spec:
    backupName: hello-world
   EOF

8. 等待 Restore 完成：

   $ watch "oc -n openshift-adp get restore hello-world -o json | jq .status"

   输出示例

   {
    "completionTimestamp": "2022-09-07T22:25:47Z",
    "phase": "Completed",
    "progress": {
      "itemsRestored": 38,
      "totalItems": 38
    },
    "startTimestamp": "2022-09-07T22:25:28Z",
    "warnings": 9
   }

9. 检查工作负载是否已恢复：

   $ oc -n hello-world get pods

   输出示例

   NAME                              READY   STATUS    RESTARTS   AGE
   hello-openshift-9f885f7c6-kdjpj   1/1     Running   0          90s

   $ curl `oc get route/hello-openshift -n hello-world -o jsonpath='{.spec.host}'`

   输出示例

   Hello OpenShift!