13.5. 使用 Bare Metal Operator 扩展用户置备的集群

流程

1. 创建 Provisioning CR。

   1. 将以下 YAML 保存到 provisioning.yaml 文件中：

      apiVersion: metal3.io/v1alpha1
      kind: Provisioning
      metadata:
        name: provisioning-configuration
      spec:
        provisioningNetwork: "Disabled"
        watchAllNamespaces: false

      注意

      在使用 Bare Metal Operator 扩展用户置备的集群时，OpenShift Container Platform 4.16 不支持启用 provisioning 网络。

2. 运行以下命令来创建 Provisioning CR：

   $ oc create -f provisioning.yaml

   输出示例

   provisioning.metal3.io/provisioning-configuration created

流程

1. 创建 Secret CR 和 BareMetalHost CR。

   1. 将以下 YAML 保存到 bmh.yaml 文件中：

      ---
      apiVersion: v1
      kind: Secret
      metadata:
        name: worker1-bmc
        namespace: openshift-machine-api
      type: Opaque
      data:
        username: <base64_of_uid>
        password: <base64_of_pwd>
      ---
      apiVersion: metal3.io/v1alpha1
      kind: BareMetalHost
      metadata:
        name: worker1
        namespace: openshift-machine-api
      spec:
        bmc:
          address: <protocol>://<bmc_url> 1
          credentialsName: "worker1-bmc"
        bootMACAddress: <nic1_mac_address>
        externallyProvisioned: false 2
        customDeploy:
          method: install_coreos
        online: true
        userData:
          name: worker-user-data-managed
          namespace: openshift-machine-api

      1

      您只能使用支持虚拟介质网络引导的裸机主机驱动程序，如 redfish-virtualmedia 和 idrac-virtualmedia。

      2

      您必须将 BareMetalHost 自定义资源中的 spec.externallyProvisioned 规格设置为 false。默认值为 false。

2. 运行以下命令来创建裸机主机对象：

   $ oc create -f bmh.yaml

   输出示例

   secret/worker1-bmc created
   baremetalhost.metal3.io/worker1 created

3. 批准所有证书签名请求 (CSR)。

   1. 运行以下命令验证主机的置备状态是否为 provisioned：

      $ oc get bmh -A

      输出示例

      NAMESPACE               NAME          STATE                    CONSUMER   ONLINE   ERROR   AGE
      openshift-machine-api   controller1   externally provisioned              true             5m25s
      openshift-machine-api   worker1       provisioned                         true             4m45s

   2. 运行以下命令，获取待处理的 CSR 列表：

      $ oc get csr

      输出示例

      NAME        AGE   SIGNERNAME                                    REQUESTOR                                         REQUESTEDDURATION CONDITION
      csr-gfm9f   33s   kubernetes.io/kube-apiserver-client-kubelet   system:serviceaccount:openshift-machine-config-o
      perator:node-bootstrapper   <none>              Pending

   3. 运行以下命令来批准 CSR：

      $ oc adm certificate approve <csr_name>

      输出示例

      certificatesigningrequest.certificates.k8s.io/<csr_name> approved

流程

1. 创建 Secret CR 和 BareMetalHost CR。

   1. 将以下 YAML 保存到 controller.yaml 文件中：

      ---
      apiVersion: v1
      kind: Secret
      metadata:
        name: controller1-bmc
        namespace: openshift-machine-api
      type: Opaque
      data:
        username: <base64_of_uid>
        password: <base64_of_pwd>
      ---
      apiVersion: metal3.io/v1alpha1
      kind: BareMetalHost
      metadata:
        name: controller1
        namespace: openshift-machine-api
      spec:
        bmc:
          address: <protocol>://<bmc_url> 1
          credentialsName: "controller1-bmc"
        bootMACAddress: <nic1_mac_address>
        customDeploy:
          method: install_coreos
        externallyProvisioned: true 2
        online: true
        userData:
          name: controller-user-data-managed
          namespace: openshift-machine-api

      1

      您只能使用支持虚拟介质网络引导的裸机主机驱动程序，如 redfish-virtualmedia 和 idrac-virtualmedia。

      2

      您必须将值设为 true，以防止 BMO 重新置备裸机控制器主机。

2. 运行以下命令来创建裸机主机对象：

   $ oc create -f controller.yaml

   输出示例

   secret/controller1-bmc created
   baremetalhost.metal3.io/controller1 created

流程

1. 运行以下命令进行 cordon 和 drain 主机：

   $ oc adm drain app1 --force --ignore-daemonsets=true

   输出示例

   node/app1 cordoned
   WARNING: ignoring DaemonSet-managed Pods: openshift-cluster-node-tuning-operator/tuned-tvthg, openshift-dns/dns-
   default-9q6rz, openshift-dns/node-resolver-zvt42, openshift-image-registry/node-ca-mzxth, openshift-ingress-cana
   ry/ingress-canary-qq5lf, openshift-machine-config-operator/machine-config-daemon-v79dm, openshift-monitoring/nod
   e-exporter-2vn59, openshift-multus/multus-additional-cni-plugins-wssvj, openshift-multus/multus-fn8tg, openshift
   -multus/network-metrics-daemon-5qv55, openshift-network-diagnostics/network-check-target-jqxn2, openshift-ovn-ku
   bernetes/ovnkube-node-rsvqg
   evicting pod openshift-operator-lifecycle-manager/collect-profiles-27766965-258vp
   evicting pod openshift-operator-lifecycle-manager/collect-profiles-27766950-kg5mk
   evicting pod openshift-operator-lifecycle-manager/collect-profiles-27766935-stf4s
   pod/collect-profiles-27766965-258vp evicted
   pod/collect-profiles-27766950-kg5mk evicted
   pod/collect-profiles-27766935-stf4s evicted
   node/app1 drained

2. 从 BareMetalHost CR 中删除 customDeploy 规格。

   1. 运行以下命令，为主机编辑 BareMetalHost CR：

      $ oc edit bmh -n openshift-machine-api <host_name>

   2. 删除 spec.customDeploy 和 spec.customDeploy.method 行：

      ...
        customDeploy:
          method: install_coreos

   3. 运行以下命令，验证主机的置备状态是否更改为 deprovisioning ：

      $ oc get bmh -A

      输出示例

      NAMESPACE               NAME          STATE                    CONSUMER   ONLINE   ERROR   AGE
      openshift-machine-api   controller1   externally provisioned              true             58m
      openshift-machine-api   worker1       deprovisioning                      true             57m

3. 运行以下命令来删除节点：

   $ oc delete node <node_name>