8.4.2. 置备裸机节点

置备裸机节点需要从 provisioner 节点执行以下步骤。

流程

  1. 在置备裸机节点前，请确保 PROVISIONING STATUS 为 ready。 

    $  oc -n openshift-machine-api get bmh openshift-worker-<num>

    其中 <num> 是 worker 节点号。 

    NAME                 STATUS   PROVISIONING STATUS   CONSUMER   BMC                 HARDWARE PROFILE   ONLINE   ERROR
openshift-worker-<num>   OK       ready                            ipmi://<out-of-band-ip>   unknown            true

  2. 获取 worker 节点数量。 

    $ oc get nodes
    NAME                                                STATUS   ROLES           AGE     VERSION
provisioner.openshift.example.com            Ready    master          30h     v1.16.2
openshift-master-1.openshift.example.com            Ready    master          30h     v1.16.2
openshift-master-2.openshift.example.com            Ready    master          30h     v1.16.2
openshift-master-3.openshift.example.com            Ready    master          30h     v1.16.2
openshift-worker-0.openshift.example.com            Ready    master          30h     v1.16.2
openshift-worker-1.openshift.example.com            Ready    master          30h     v1.16.2

  3. 获取机器集。 

    $ oc get machinesets -n openshift-machine-api
    NAME                                DESIRED   CURRENT   READY   AVAILABLE   AGE
...
openshift-worker-0.example.com      1         1         1       1           55m
openshift-worker-1.example.com      1         1         1       1           55m

  4. 将 worker 节点数量增加一倍。 

    $ oc scale --replicas=<num> machineset <machineset> -n openshift-machine-api

    将 <num> 替换为新的 worker 节点数。将 <machineset> 替换为上一步中的机器集的名称。

  5. 检查裸机节点的状态。 

    $ oc -n openshift-machine-api get bmh openshift-worker-<num>

    其中 <num> 是 worker 节点号。状态从 ready 变为 provisioning。 

    NAME                 STATUS   PROVISIONING STATUS   CONSUMER                  BMC                 HARDWARE PROFILE   ONLINE   ERROR
openshift-worker-<num>   OK       provisioning          openshift-worker-<num>-65tjz   ipmi://<out-of-band-ip>   unknown            true

    provisioning 会一直保持，直到 OpenShift Container Platform 集群置备节点。这可能需要 30 分钟或更长时间。完成后，状态将变为 provisioned。 

    NAME                 STATUS   PROVISIONING STATUS   CONSUMER                  BMC                 HARDWARE PROFILE   ONLINE   ERROR
openshift-worker-<num>   OK       provisioned           openshift-worker-<num>-65tjz   ipmi://<out-of-band-ip>   unknown            true

  6. 置备后，请确保裸机节点就绪。 

    $ oc get nodes
    NAME                                          STATUS   ROLES   AGE     VERSION
provisioner.openshift.example.com             Ready    master  30h     v1.16.2
openshift-master-1.openshift.example.com      Ready    master  30h     v1.16.2
openshift-master-2.openshift.example.com      Ready    master  30h     v1.16.2
openshift-master-3.openshift.example.com      Ready    master  30h     v1.16.2
openshift-worker-0.openshift.example.com      Ready    master  30h     v1.16.2
openshift-worker-1.openshift.example.com      Ready    master  30h     v1.16.2
openshift-worker-<num>.openshift.example.com  Ready    worker  3m27s   v1.16.2

    您还可以检查 kubelet。 

    $ ssh openshift-worker-<num>
    [kni@openshift-worker-<num>]$ journalctl -fu kubelet