4.3. 在 OpenShift Container Platform 4.2 到 4.5 上安装旧的 MTC Operator

流程

1. 使用您的红帽客户门户网站账户登陆到 registry.redhat.io：

   $ podman login registry.redhat.io

2. 输入以下命令下载 operator.yml 文件：

   podman cp $(podman create registry.redhat.io/rhmtc/openshift-migration-legacy-rhel8-operator:v1.7):/operator.yml ./

3. 输入以下命令下载 controller.yml 文件：

   podman cp $(podman create registry.redhat.io/rhmtc/openshift-migration-legacy-rhel8-operator:v1.7):/controller.yml ./

4. 运行以下命令来获取 Operator 镜像映射：

   $ grep openshift-migration-legacy-rhel8-operator ./mapping.txt | grep rhmtc

   mapping.txt 文件是在对 Operator 目录进行镜像时创建的。输出显示了 registry.redhat.io 镜像和您的镜像 registry 镜像之间的映射。

   输出示例

   registry.redhat.io/rhmtc/openshift-migration-legacy-rhel8-operator@sha256:468a6126f73b1ee12085ca53a312d1f96ef5a2ca03442bcb63724af5e2614e8a=<registry.apps.example.com>/rhmtc/openshift-migration-legacy-rhel8-operator

5. 在 operator.yml 文件中，为 ansible 和 operator 容器更新 image 值，并更新 REGISTRY 值：

   containers:
     - name: ansible
       image: <registry.apps.example.com>/rhmtc/openshift-migration-legacy-rhel8-operator@sha256:<468a6126f73b1ee12085ca53a312d1f96ef5a2ca03442bcb63724af5e2614e8a> 1
   ...
     - name: operator
       image: <registry.apps.example.com>/rhmtc/openshift-migration-legacy-rhel8-operator@sha256:<468a6126f73b1ee12085ca53a312d1f96ef5a2ca03442bcb63724af5e2614e8a> 2
   ...
       env:
       - name: REGISTRY
         value: <registry.apps.example.com> 3

   1 2

   指定您的镜像 registry 和 Operator 镜像的 sha256 值。

   3

   指定您的镜像 registry。

6. 登录您的 OpenShift Container Platform 源集群。

7. 创建 MTC Operator 对象的 Migration Toolkit:

   $ oc create -f operator.yml

   输出示例

   namespace/openshift-migration created
   rolebinding.rbac.authorization.k8s.io/system:deployers created
   serviceaccount/migration-operator created
   customresourcedefinition.apiextensions.k8s.io/migrationcontrollers.migration.openshift.io created
   role.rbac.authorization.k8s.io/migration-operator created
   rolebinding.rbac.authorization.k8s.io/migration-operator created
   clusterrolebinding.rbac.authorization.k8s.io/migration-operator created
   deployment.apps/migration-operator created
   Error from server (AlreadyExists): error when creating "./operator.yml":
   rolebindings.rbac.authorization.k8s.io "system:image-builders" already exists 1
   Error from server (AlreadyExists): error when creating "./operator.yml":
   rolebindings.rbac.authorization.k8s.io "system:image-pullers" already exists

   1

   您可以忽略 Error from server (AlreadyExists) 信息。它们是由 MTC Operator 为早期版本的 OpenShift Container Platform 4 创建资源造成的，这些资源在以后的版本中已提供。

8. 创建 MigrationController 对象：

   $ oc create -f controller.yml

9. 验证 MTC Pod 是否正在运行：

   $ oc get pods -n openshift-migration