5.5. 对初始化集群失败进行故障排除

流程

1. 运行以下命令检查 ClusterVersion 对象：

   $ oc --kubeconfig=${INSTALL_DIR}/auth/kubeconfig get clusterversion -o yaml

   输出示例

   apiVersion: config.openshift.io/v1
   kind: ClusterVersion
   metadata:
     creationTimestamp: 2019-02-27T22:24:21Z
     generation: 1
     name: version
     resourceVersion: "19927"
     selfLink: /apis/config.openshift.io/v1/clusterversions/version
     uid: 6e0f4cf8-3ade-11e9-9034-0a923b47ded4
   spec:
     channel: stable-4.1
     clusterID: 5ec312f9-f729-429d-a454-61d4906896ca
   status:
     availableUpdates: null
     conditions:
     - lastTransitionTime: 2019-02-27T22:50:30Z
       message: Done applying 4.1.1
       status: "True"
       type: Available
     - lastTransitionTime: 2019-02-27T22:50:30Z
       status: "False"
       type: Failing
     - lastTransitionTime: 2019-02-27T22:50:30Z
       message: Cluster version is 4.1.1
       status: "False"
       type: Progressing
     - lastTransitionTime: 2019-02-27T22:24:31Z
       message: 'Unable to retrieve available updates: unknown version 4.1.1
       reason: RemoteFailed
       status: "False"
       type: RetrievedUpdates
     desired:
       image: registry.svc.ci.openshift.org/openshift/origin-release@sha256:91e6f754975963e7db1a9958075eb609ad226968623939d262d1cf45e9dbc39a
       version: 4.1.1
     history:
     - completionTime: 2019-02-27T22:50:30Z
       image: registry.svc.ci.openshift.org/openshift/origin-release@sha256:91e6f754975963e7db1a9958075eb609ad226968623939d262d1cf45e9dbc39a
       startedTime: 2019-02-27T22:24:31Z
       state: Completed
       version: 4.1.1
     observedGeneration: 1
     versionHash: Wa7as_ik1qE=

2. 运行以下命令来查看条件：

   $ oc --kubeconfig=${INSTALL_DIR}/auth/kubeconfig get clusterversion version \
        -o=jsonpath='{range .status.conditions[*]}{.type}{" "}{.status}{" "}{.message}{"\n"}{end}'

   某些最重要的条件包括 Failing、Available 和 Progressing。

   输出示例

   Available True Done applying 4.1.1
   Failing False
   Progressing False Cluster version is 4.0.0-0.alpha-2019-02-26-194020
   RetrievedUpdates False Unable to retrieve available updates: unknown version 4.1.1

3. 运行以下命令检查 ClusterOperator 对象：

   $ oc --kubeconfig=${INSTALL_DIR}/auth/kubeconfig get clusteroperator

   该命令返回集群 Operator 的状态。

   输出示例

   NAME                                  VERSION   AVAILABLE   PROGRESSING   FAILING   SINCE
   cluster-baremetal-operator                      True        False         False     17m
   cluster-autoscaler                              True        False         False     17m
   cluster-storage-operator                        True        False         False     10m
   console                                         True        False         False     7m21s
   dns                                             True        False         False     31m
   image-registry                                  True        False         False     9m58s
   ingress                                         True        False         False     10m
   kube-apiserver                                  True        False         False     28m
   kube-controller-manager                         True        False         False     21m
   kube-scheduler                                  True        False         False     25m
   machine-api                                     True        False         False     17m
   machine-config                                  True        False         False     17m
   marketplace-operator                            True        False         False     10m
   monitoring                                      True        False         False     8m23s
   network                                         True        False         False     13m
   node-tuning                                     True        False         False     11m
   openshift-apiserver                             True        False         False     15m
   openshift-authentication                        True        False         False     20m
   openshift-cloud-credential-operator             True        False         False     18m
   openshift-controller-manager                    True        False         False     10m
   openshift-samples                               True        False         False     8m42s
   operator-lifecycle-manager                      True        False         False     17m
   service-ca                                      True        False         False     30m

4. 运行以下命令检查单个集群 Operator：

   $ oc --kubeconfig=${INSTALL_DIR}/auth/kubeconfig get clusteroperator <operator> -oyaml 

   1

   1

   将 <operator> 替换为集群 Operator 的名称。此命令可用于识别集群 Operator 没有达到 Available 状态的原因或处于 Failed 状态。

   输出示例

   apiVersion: config.openshift.io/v1
   kind: ClusterOperator
   metadata:
     creationTimestamp: 2019-02-27T22:47:04Z
     generation: 1
     name: monitoring
     resourceVersion: "24677"
     selfLink: /apis/config.openshift.io/v1/clusteroperators/monitoring
     uid: 9a6a5ef9-3ae1-11e9-bad4-0a97b6ba9358
   spec: {}
   status:
     conditions:
     - lastTransitionTime: 2019-02-27T22:49:10Z
       message: Successfully rolled out the stack.
       status: "True"
       type: Available
     - lastTransitionTime: 2019-02-27T22:49:10Z
       status: "False"
       type: Progressing
     - lastTransitionTime: 2019-02-27T22:49:10Z
       status: "False"
       type: Failing
     extension: null
     relatedObjects: null
     version: ""

5. 要获取集群 Operator 的状态条件，请运行以下命令：

   $ oc --kubeconfig=${INSTALL_DIR}/auth/kubeconfig get clusteroperator <operator> \
        -o=jsonpath='{range .status.conditions[*]}{.type}{" "}{.status}{" "}{.message}{"\n"}{end}'

   将 <operator> 替换为以上其中一个 Operator 的名称。

   输出示例

   Available True Successfully rolled out the stack
   Progressing False
   Failing False

6. 要检索集群 Operator 拥有的对象列表，请执行以下命令：

   oc --kubeconfig=${INSTALL_DIR}/auth/kubeconfig get clusteroperator kube-apiserver \
      -o=jsonpath='{.status.relatedObjects}'

   输出示例

   [map[resource:kubeapiservers group:operator.openshift.io name:cluster] map[group: name:openshift-config resource:namespaces] map[group: name:openshift-config-managed resource:namespaces] map[group: name:openshift-kube-apiserver-operator resource:namespaces] map[group: name:openshift-kube-apiserver resource:namespaces]]