12.2. 查看 Elasticsearch 日志存储的状态

您可以查看 OpenShift Elasticsearch Operator 的状态以及多个 Elasticsearch 组件的状态。

12.2.1. 查看日志存储的状态

您可以查看日志存储的状态。

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
  2. 查看状态:

    1. 获取日志存储实例的名称:

      $ oc get Elasticsearch

      输出示例

      NAME            AGE
      elasticsearch   5h9m

    2. 获取日志存储状态:

      $ oc get Elasticsearch <Elasticsearch-instance> -o yaml

      例如:

      $ oc get Elasticsearch elasticsearch -n openshift-logging -o yaml

      输出中包含类似于如下的信息:

      输出示例

      status: 1
        cluster: 2
          activePrimaryShards: 30
          activeShards: 60
          initializingShards: 0
          numDataNodes: 3
          numNodes: 3
          pendingTasks: 0
          relocatingShards: 0
          status: green
          unassignedShards: 0
        clusterHealth: ""
        conditions: [] 3
        nodes: 4
        - deploymentName: elasticsearch-cdm-zjf34ved-1
          upgradeStatus: {}
        - deploymentName: elasticsearch-cdm-zjf34ved-2
          upgradeStatus: {}
        - deploymentName: elasticsearch-cdm-zjf34ved-3
          upgradeStatus: {}
        pods: 5
          client:
            failed: []
            notReady: []
            ready:
            - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422
            - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz
            - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt
          data:
            failed: []
            notReady: []
            ready:
            - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422
            - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz
            - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt
          master:
            failed: []
            notReady: []
            ready:
            - elasticsearch-cdm-zjf34ved-1-6d7fbf844f-sn422
            - elasticsearch-cdm-zjf34ved-2-dfbd988bc-qkzjz
            - elasticsearch-cdm-zjf34ved-3-c8f566f7c-t7zkt
        shardAllocationEnabled: all

      1
      在输出中,集群状态字段显示在 status 小节中。
      2
      日志存储的状态:
      • 活跃的主分片的数量。
      • 活跃分片的数量。
      • 正在初始化的分片的数量。
      • 保存数据节点的日志数量。
      • 日志存储节点的总数。
      • 待处理的任务数量。
      • 日志存储状态: greenredyellow
      • 未分配分片的数量。
      3
      任何状态条件(若存在)。日志存储态代表了当无法放置容器时来自于调度程序的原因。显示与以下情况有关的所有事件:
      • 容器正在等待日志存储和代理容器。
      • 日志存储和代理容器的容器终止。
      • Pod 不可调度。此外还显示适用于多个问题的情况,具体请参阅情况消息示例
      4
      集群中的日志存储节点,带有 upgradeStatus
      5
      集群中的日志存储客户端、数据和 master 节点,列在 failed、notReadyready 状态下。

12.2.1.1. 情况消息示例

以下是来自 Elasticsearch 实例的 Status 部分的一些情况消息的示例。

以下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。

status:
  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-cdm-0-1
    upgradeStatus: {}

以下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。

status:
  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: example-elasticsearch-cdm-0-1
    upgradeStatus: {}

以下状态消息表示 CR 中的日志存储节点选择器与集群中的任何节点都不匹配:

status:
    nodes:
    - conditions:
      - lastTransitionTime: 2019-04-10T02:26:24Z
        message: '0/8 nodes are available: 8 node(s) didn''t match node selector.'
        reason: Unschedulable
        status: "True"
        type: Unschedulable

以下状态消息表示日志存储 CR 使用了不存在的持久性卷声明 (PVC)。

status:
   nodes:
   - conditions:
     - last Transition Time:  2019-04-10T05:55:51Z
       message:               pod has unbound immediate PersistentVolumeClaims (repeated 5 times)
       reason:                Unschedulable
       status:                True
       type:                  Unschedulable

以下状态消息表示日志存储集群没有足够的节点来支持冗余策略。

status:
  clusterHealth: ""
  conditions:
  - lastTransitionTime: 2019-04-17T20:01:31Z
    message: Wrong RedundancyPolicy selected. Choose different RedundancyPolicy or
      add more nodes with data roles
    reason: Invalid Settings
    status: "True"
    type: InvalidRedundancy

此状态消息表示集群有太多 control plane 节点(也称为 master 节点):

status:
  clusterHealth: green
  conditions:
    - lastTransitionTime: '2019-04-17T20:12:34Z'
      message: >-
        Invalid master nodes count. Please ensure there are no more than 3 total
        nodes with master roles
      reason: Invalid Settings
      status: 'True'
      type: InvalidMasters

以下状态消息表示 Elasticsearch 存储不支持您尝试进行的更改。

例如:

status:
  clusterHealth: green
  conditions:
    - lastTransitionTime: "2021-05-07T01:05:13Z"
      message: Changing the storage structure for a custom resource is not supported
      reason: StorageStructureChangeIgnored
      status: 'True'
      type: StorageStructureChangeIgnored

reasontype 类型字段指定不受支持的更改类型:

StorageClassNameChangeIgnored
不支持更改存储类名称。
StorageSizeChangeIgnored
不支持更改存储大小。
StorageStructureChangeIgnored

不支持在临时存储结构和持久性存储结构间更改。

重要

如果您将 ClusterLogging 自定义资源 (CR ) 配置为从临时切换到持久性存储,OpenShift Elasticsearch Operator 会创建一个持久性卷声明 (PVC),但不创建持久性卷 (PV)。要清除 StorageStructureChangeIgnored 状态,您必须恢复对 ClusterLogging CR 的更改并删除 PVC。

12.2.2. 查看日志存储组件的状态

您可以查看多个日志存储组件的状态。

Elasticsearch 索引

您可以查看 Elasticsearch 索引的状态。

  1. 获取 Elasticsearch Pod 的名称:

    $ oc get pods --selector component=elasticsearch -o name

    输出示例

    pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw
    pod/elasticsearch-cdm-1godmszn-2-5769cf-9ms2n
    pod/elasticsearch-cdm-1godmszn-3-f66f7d-zqkz7

  2. 获取索引的状态:

    $ oc exec elasticsearch-cdm-4vjor49p-2-6d4d7db474-q2w7z -- indices

    输出示例

    Defaulting container name to elasticsearch.
    Use 'oc describe pod/elasticsearch-cdm-4vjor49p-2-6d4d7db474-q2w7z -n openshift-logging' to see all of the containers in this pod.
    
    green  open   infra-000002                                                     S4QANnf1QP6NgCegfnrnbQ   3   1     119926            0        157             78
    green  open   audit-000001                                                     8_EQx77iQCSTzFOXtxRqFw   3   1          0            0          0              0
    green  open   .security                                                        iDjscH7aSUGhIdq0LheLBQ   1   1          5            0          0              0
    green  open   .kibana_-377444158_kubeadmin                                     yBywZ9GfSrKebz5gWBZbjw   3   1          1            0          0              0
    green  open   infra-000001                                                     z6Dpe__ORgiopEpW6Yl44A   3   1     871000            0        874            436
    green  open   app-000001                                                       hIrazQCeSISewG3c2VIvsQ   3   1       2453            0          3              1
    green  open   .kibana_1                                                        JCitcBMSQxKOvIq6iQW6wg   1   1          0            0          0              0
    green  open   .kibana_-1595131456_user1                                        gIYFIEGRRe-ka0W3okS-mQ   3   1          1            0          0              0

日志存储 pod

您可以查看托管日志存储的 pod 的状态。

  1. 获取 Pod 的名称:

    $ oc get pods --selector component=elasticsearch -o name

    输出示例

    pod/elasticsearch-cdm-1godmszn-1-6f8495-vp4lw
    pod/elasticsearch-cdm-1godmszn-2-5769cf-9ms2n
    pod/elasticsearch-cdm-1godmszn-3-f66f7d-zqkz7

  2. 获取 Pod 的状态:

    $ oc describe pod elasticsearch-cdm-1godmszn-1-6f8495-vp4lw

    输出中包括以下状态信息:

    输出示例

    ....
    Status:             Running
    
    ....
    
    Containers:
      elasticsearch:
        Container ID:   cri-o://b7d44e0a9ea486e27f47763f5bb4c39dfd2
        State:          Running
          Started:      Mon, 08 Jun 2020 10:17:56 -0400
        Ready:          True
        Restart Count:  0
        Readiness:  exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3
    
    ....
    
      proxy:
        Container ID:  cri-o://3f77032abaddbb1652c116278652908dc01860320b8a4e741d06894b2f8f9aa1
        State:          Running
          Started:      Mon, 08 Jun 2020 10:18:38 -0400
        Ready:          True
        Restart Count:  0
    
    ....
    
    Conditions:
      Type              Status
      Initialized       True
      Ready             True
      ContainersReady   True
      PodScheduled      True
    
    ....
    
    Events:          <none>

日志存储 pod 部署配置

您可以查看日志存储部署配置的状态。

  1. 获取部署配置的名称:

    $ oc get deployment --selector component=elasticsearch -o name

    输出示例

    deployment.extensions/elasticsearch-cdm-1gon-1
    deployment.extensions/elasticsearch-cdm-1gon-2
    deployment.extensions/elasticsearch-cdm-1gon-3

  2. 获取部署配置状态:

    $ oc describe deployment elasticsearch-cdm-1gon-1

    输出中包括以下状态信息:

    输出示例

    ....
      Containers:
       elasticsearch:
        Image:      registry.redhat.io/openshift-logging/elasticsearch6-rhel8
        Readiness:  exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3
    
    ....
    
    Conditions:
      Type           Status   Reason
      ----           ------   ------
      Progressing    Unknown  DeploymentPaused
      Available      True     MinimumReplicasAvailable
    
    ....
    
    Events:          <none>

日志存储副本集

您可以查看日志存储副本集的状态。

  1. 获取副本集的名称:

    $ oc get replicaSet --selector component=elasticsearch -o name
    
    replicaset.extensions/elasticsearch-cdm-1gon-1-6f8495
    replicaset.extensions/elasticsearch-cdm-1gon-2-5769cf
    replicaset.extensions/elasticsearch-cdm-1gon-3-f66f7d
  2. 获取副本集的状态:

    $ oc describe replicaSet elasticsearch-cdm-1gon-1-6f8495

    输出中包括以下状态信息:

    输出示例

    ....
      Containers:
       elasticsearch:
        Image:      registry.redhat.io/openshift-logging/elasticsearch6-rhel8@sha256:4265742c7cdd85359140e2d7d703e4311b6497eec7676957f455d6908e7b1c25
        Readiness:  exec [/usr/share/elasticsearch/probe/readiness.sh] delay=10s timeout=30s period=5s #success=1 #failure=3
    
    ....
    
    Events:          <none>

12.2.3. Elasticsearch 集群状态

OpenShift Container Platform Web 控制台的 Monitoring 部分中的 Grafana 仪表板显示 Elasticsearch 集群的状态。

要获取 OpenShift Elasticsearch 集群的状态,请访问位于 <cluster_url>/monitoring/dashboards/grafana-dashboard-cluster-logging 的 OpenShift Container Platform Web 控制台的 Monitoring 部分中的 Grafana 仪表板。

Elasticsearch 状态字段

eo_elasticsearch_cr_cluster_management_state

显示 Elasticsearch 集群是否处于受管状态或非受管状态。例如:

eo_elasticsearch_cr_cluster_management_state{state="managed"} 1
eo_elasticsearch_cr_cluster_management_state{state="unmanaged"} 0
eo_elasticsearch_cr_restart_total

显示 Elasticsearch 节点重启证书、滚动重启或调度重启的次数。例如:

eo_elasticsearch_cr_restart_total{reason="cert_restart"} 1
eo_elasticsearch_cr_restart_total{reason="rolling_restart"} 1
eo_elasticsearch_cr_restart_total{reason="scheduled_restart"} 3
es_index_namespaces_total

显示 Elasticsearch 索引命名空间的总数。例如:

Total number of Namespaces.
es_index_namespaces_total 5
es_index_document_count

显示每个命名空间的记录数。例如:

es_index_document_count{namespace="namespace_1"} 25
es_index_document_count{namespace="namespace_2"} 10
es_index_document_count{namespace="namespace_3"} 5

"Secret Elasticsearch fields are either missing or empty" 信息

如果 Elasticsearch 缺少 admin-certadmin-keylogging-es.crtlogging-es.key 文件,仪表板会显示类似以下示例的状态消息:

message": "Secret \"elasticsearch\" fields are either missing or empty: [admin-cert, admin-key, logging-es.crt, logging-es.key]",
"reason": "Missing Required Secrets",