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第 12 章 日志故障排除

12.1. 查看 OpenShift Logging 状态
复制链接

您可以查看 Red Hat OpenShift Logging Operator 的状态以及多个 OpenShift Logging 组件的状态。

12.1.1. 查看 Red Hat OpenShift Logging Operator 的状态
复制链接

您可以查看 Red Hat OpenShift Logging Operator 的状态。

先决条件

  • 必须安装 OpenShift Logging 和 Elasticsearch。

流程

  1. 进入 openshift-logging 项目。 

    $ oc project openshift-logging
    Copy to Clipboard Toggle word wrap

  2. 查看 OpenShift Logging 状态：

    1. 获取 OpenShift Logging 状态： 

      $ oc get clusterlogging instance -o yaml
      Copy to Clipboard Toggle word wrap

      输出示例

      apiVersion: logging.openshift.io/v1
kind: ClusterLogging

....

status:
      1 
      
  collection:
    logs:
      fluentdStatus:
        daemonSet: fluentd
      2 
      
        nodes:
          fluentd-2rhqp: ip-10-0-169-13.ec2.internal
          fluentd-6fgjh: ip-10-0-165-244.ec2.internal
          fluentd-6l2ff: ip-10-0-128-218.ec2.internal
          fluentd-54nx5: ip-10-0-139-30.ec2.internal
          fluentd-flpnn: ip-10-0-147-228.ec2.internal
          fluentd-n2frh: ip-10-0-157-45.ec2.internal
        pods:
          failed: []
          notReady: []
          ready:
          - fluentd-2rhqp
          - fluentd-54nx5
          - fluentd-6fgjh
          - fluentd-6l2ff
          - fluentd-flpnn
          - fluentd-n2frh
  logstore:
      3 
      
    elasticsearchStatus:
    - ShardAllocationEnabled:  all
      cluster:
        activePrimaryShards:    5
        activeShards:           5
        initializingShards:     0
        numDataNodes:           1
        numNodes:               1
        pendingTasks:           0
        relocatingShards:       0
        status:                 green
        unassignedShards:       0
      clusterName:             elasticsearch
      nodeConditions:
        elasticsearch-cdm-mkkdys93-1:
      nodeCount:  1
      pods:
        client:
          failed:
          notReady:
          ready:
          - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c
        data:
          failed:
          notReady:
          ready:
          - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c
        master:
          failed:
          notReady:
          ready:
          - elasticsearch-cdm-mkkdys93-1-7f7c6-mjm7c
visualization:
      4 
      
    kibanaStatus:
    - deployment: kibana
      pods:
        failed: []
        notReady: []
        ready:
        - kibana-7fb4fd4cc9-f2nls
      replicaSets:
      - kibana-7fb4fd4cc9
      replicas: 1
      Copy to Clipboard Toggle word wrap

      1
      在输出中，集群状态字段显示在 status 小节中。
      2
      Fluentd Pod 的相关信息。
      3
      Elasticsearch Pod 的相关信息，包括 Elasticsearch 集群健康状态 green、yellow 或 red。
      4
      Kibana Pod 的相关信息。

12.1.1.1. 情况消息示例
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以下是来自 OpenShift Logging 实例的 Status.Nodes 部分的一些情况消息示例。

类似于以下内容的状态消息表示节点已超过配置的低水位线，并且没有分片将分配给此节点：

输出示例

  nodes:
  - conditions:
    - lastTransitionTime: 2019-03-15T15:57:22Z
      message: Disk storage usage for node is 27.5gb (36.74%). Shards will be not
        be allocated on this node.
      reason: Disk Watermark Low
      status: "True"
      type: NodeStorage
    deploymentName: example-elasticsearch-clientdatamaster-0-1
    upgradeStatus: {}
Copy to Clipboard Toggle word wrap

类似于以下内容的状态消息表示节点已超过配置的高水位线，并且分片将重新定位到其他节点：

输出示例

  nodes:
  - conditions:
    - lastTransitionTime: 2019-03-15T16:04:45Z
      message: Disk storage usage for node is 27.5gb (36.74%). Shards will be relocated
        from this node.
      reason: Disk Watermark High
      status: "True"
      type: NodeStorage
    deploymentName: cluster-logging-operator
    upgradeStatus: {}
Copy to Clipboard Toggle word wrap

类似于以下内容的状态消息表示 CR 中的 Elasticsearch 节点选择器与集群中的任何节点都不匹配：

输出示例

    Elasticsearch Status:
      Shard Allocation Enabled:  shard allocation unknown
      Cluster:
        Active Primary Shards:  0
        Active Shards:          0
        Initializing Shards:    0
        Num Data Nodes:         0
        Num Nodes:              0
        Pending Tasks:          0
        Relocating Shards:      0
        Status:                 cluster health unknown
        Unassigned Shards:      0
      Cluster Name:             elasticsearch
      Node Conditions:
        elasticsearch-cdm-mkkdys93-1:
          Last Transition Time:  2019-06-26T03:37:32Z
          Message:               0/5 nodes are available: 5 node(s) didn't match node selector.
          Reason:                Unschedulable
          Status:                True
          Type:                  Unschedulable
        elasticsearch-cdm-mkkdys93-2:
      Node Count:  2
      Pods:
        Client:
          Failed:
          Not Ready:
            elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49
            elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl
          Ready:
        Data:
          Failed:
          Not Ready:
            elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49
            elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl
          Ready:
        Master:
          Failed:
          Not Ready:
            elasticsearch-cdm-mkkdys93-1-75dd69dccd-f7f49
            elasticsearch-cdm-mkkdys93-2-67c64f5f4c-n58vl
          Ready:
Copy to Clipboard Toggle word wrap

类似于以下内容的状态消息表示请求的 PVC 无法绑定到 PV：

输出示例

      Node Conditions:
        elasticsearch-cdm-mkkdys93-1:
          Last Transition Time:  2019-06-26T03:37:32Z
          Message:               pod has unbound immediate PersistentVolumeClaims (repeated 5 times)
          Reason:                Unschedulable
          Status:                True
          Type:                  Unschedulable
Copy to Clipboard Toggle word wrap

类似于以下内容的状态消息表示无法调度 Fluentd Pod，因为节点选择器与任何节点都不匹配：

输出示例

Status:
  Collection:
    Logs:
      Fluentd Status:
        Daemon Set:  fluentd
        Nodes:
        Pods:
          Failed:
          Not Ready:
          Ready:
Copy to Clipboard Toggle word wrap

12.1.2. 查看 OpenShift Logging 组件的状态
复制链接

您可以查看多个 OpenShift Logging 组件的状态。

先决条件

  • 必须安装 OpenShift Logging 和 Elasticsearch。

流程

  1. 进入 openshift-logging 项目。 

    $ oc project openshift-logging
    Copy to Clipboard Toggle word wrap

  2. 查看 OpenShift Logging 环境的状态： 

    $ oc describe deployment cluster-logging-operator
    Copy to Clipboard Toggle word wrap

    输出示例

    Name:                   cluster-logging-operator

....

Conditions:
  Type           Status  Reason
  ----           ------  ------
  Available      True    MinimumReplicasAvailable
  Progressing    True    NewReplicaSetAvailable

....

Events:
  Type    Reason             Age   From                   Message
  ----    ------             ----  ----                   -------
  Normal  ScalingReplicaSet  62m   deployment-controller  Scaled up replica set cluster-logging-operator-574b8987df to 1----
    Copy to Clipboard Toggle word wrap

  3. 查看 OpenShift Logging 副本集的状态：

    1. 获取副本集的名称：

      输出示例

      $ oc get replicaset
      Copy to Clipboard Toggle word wrap

      输出示例

      NAME                                      DESIRED   CURRENT   READY   AGE
cluster-logging-operator-574b8987df       1         1         1       159m
elasticsearch-cdm-uhr537yu-1-6869694fb    1         1         1       157m
elasticsearch-cdm-uhr537yu-2-857b6d676f   1         1         1       156m
elasticsearch-cdm-uhr537yu-3-5b6fdd8cfd   1         1         1       155m
kibana-5bd5544f87                         1         1         1       157m
      Copy to Clipboard Toggle word wrap

    2. 获取副本集的状态： 

      $ oc describe replicaset cluster-logging-operator-574b8987df
      Copy to Clipboard Toggle word wrap

      输出示例

      Name:           cluster-logging-operator-574b8987df

....

Replicas:       1 current / 1 desired
Pods Status:    1 Running / 0 Waiting / 0 Succeeded / 0 Failed

....

Events:
  Type    Reason            Age   From                   Message
  ----    ------            ----  ----                   -------
  Normal  SuccessfulCreate  66m   replicaset-controller  Created pod: cluster-logging-operator-574b8987df-qjhqv----
      Copy to Clipboard Toggle word wrap

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