5.5. 使用 BMO 从用户置备的集群中删除主机

流程

1. 运行以下命令 cordon 和 drain 节点：

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

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   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

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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>

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

      ...
        customDeploy:
          method: install_coreos

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   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

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      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

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3. 当 BareMetalHost 状态更改为 available 时，运行以下命令来删除主机：

   $ oc delete bmh -n openshift-machine-api <bmh_name>

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   注意

   您可以运行这个步骤，而无需编辑 BareMetalHost CR。可能需要过些时间，BareMetalHost 状态才会从 deprovisioning 变为 available。

4. 运行以下命令来删除节点：

   $ oc delete node <node_name>

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