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3.4.2. 从 OpenShift Container Storage 中删除监控堆栈

3.4.2. 从 OpenShift Container Storage 中删除监控堆栈

使用本节从 OpenShift Container Storage 清理监控堆栈。

在配置监控堆栈时创建的 PVC 位于 openshift-monitoring 命名空间中。

先决条件

PVC 被配置为使用 OpenShift Container Platform 监控堆栈。
如需更多信息，请参阅配置监控堆栈。

流程

列出当前在 openshift-monitoring 命名空间中运行的 pod 和 PVC。

oc get pod,pvc -n openshift-monitoring

$ oc get pod,pvc -n openshift-monitoring
NAME                           READY   STATUS    RESTARTS   AGE
pod/alertmanager-main-0         3/3     Running   0          8d
pod/alertmanager-main-1         3/3     Running   0          8d
pod/alertmanager-main-2         3/3     Running   0          8d
pod/cluster-monitoring-
operator-84457656d-pkrxm        1/1     Running   0          8d
pod/grafana-79ccf6689f-2ll28    2/2     Running   0          8d
pod/kube-state-metrics-
7d86fb966-rvd9w                 3/3     Running   0          8d
pod/node-exporter-25894         2/2     Running   0          8d
pod/node-exporter-4dsd7         2/2     Running   0          8d
pod/node-exporter-6p4zc         2/2     Running   0          8d
pod/node-exporter-jbjvg         2/2     Running   0          8d
pod/node-exporter-jj4t5         2/2     Running   0          6d18h
pod/node-exporter-k856s         2/2     Running   0          6d18h
pod/node-exporter-rf8gn         2/2     Running   0          8d
pod/node-exporter-rmb5m         2/2     Running   0          6d18h
pod/node-exporter-zj7kx         2/2     Running   0          8d
pod/openshift-state-metrics-
59dbd4f654-4clng                3/3     Running   0          8d
pod/prometheus-adapter-
5df5865596-k8dzn                1/1     Running   0          7d23h
pod/prometheus-adapter-
5df5865596-n2gj9                1/1     Running   0          7d23h
pod/prometheus-k8s-0            6/6     Running   1          8d
pod/prometheus-k8s-1            6/6     Running   1          8d
pod/prometheus-operator-
55cfb858c9-c4zd9                1/1     Running   0          6d21h
pod/telemeter-client-
78fc8fc97d-2rgfp                3/3     Running   0          8d

NAME                                                              STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS                  AGE
persistentvolumeclaim/my-alertmanager-claim-alertmanager-main-0   Bound    pvc-0d519c4f-15a5-11ea-baa0-026d231574aa   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   8d
persistentvolumeclaim/my-alertmanager-claim-alertmanager-main-1   Bound    pvc-0d5a9825-15a5-11ea-baa0-026d231574aa   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   8d
persistentvolumeclaim/my-alertmanager-claim-alertmanager-main-2   Bound    pvc-0d6413dc-15a5-11ea-baa0-026d231574aa   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   8d
persistentvolumeclaim/my-prometheus-claim-prometheus-k8s-0        Bound    pvc-0b7c19b0-15a5-11ea-baa0-026d231574aa   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   8d
persistentvolumeclaim/my-prometheus-claim-prometheus-k8s-1        Bound    pvc-0b8aed3f-15a5-11ea-baa0-026d231574aa   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   8d

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编辑监控 configmap。

oc -n openshift-monitoring edit configmap cluster-monitoring-config

$ oc -n openshift-monitoring edit configmap cluster-monitoring-config

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删除引用 OpenShift Container Storage 存储类的所有 config 部分，如下例所示并保存。

Expand

编辑前

.
.
.
apiVersion: v1
data:
  config.yaml: |
    alertmanagerMain:
      volumeClaimTemplate:
        metadata:
          name: my-alertmanager-claim
        spec:
          resources:
            requests:
              storage: 40Gi
          storageClassName: ocs-external-storagecluster-ceph-rbd
    prometheusK8s:
      volumeClaimTemplate:
        metadata:
          name: my-prometheus-claim
        spec:
          resources:
            requests:
              storage: 40Gi
          storageClassName: ocs-external-storagecluster-ceph-rbd
kind: ConfigMap
metadata:
  creationTimestamp: "2019-12-02T07:47:29Z"
  name: cluster-monitoring-config
  namespace: openshift-monitoring
  resourceVersion: "22110"
  selfLink: /api/v1/namespaces/openshift-monitoring/configmaps/cluster-monitoring-config
  uid: fd6d988b-14d7-11ea-84ff-066035b9efa8


.
.
.

.
.
.
apiVersion: v1
data:
  config.yaml: |
    alertmanagerMain:
      volumeClaimTemplate:
        metadata:
          name: my-alertmanager-claim
        spec:
          resources:
            requests:
              storage: 40Gi
          storageClassName: ocs-external-storagecluster-ceph-rbd
    prometheusK8s:
      volumeClaimTemplate:
        metadata:
          name: my-prometheus-claim
        spec:
          resources:
            requests:
              storage: 40Gi
          storageClassName: ocs-external-storagecluster-ceph-rbd
kind: ConfigMap
metadata:
  creationTimestamp: "2019-12-02T07:47:29Z"
  name: cluster-monitoring-config
  namespace: openshift-monitoring
  resourceVersion: "22110"
  selfLink: /api/v1/namespaces/openshift-monitoring/configmaps/cluster-monitoring-config
  uid: fd6d988b-14d7-11ea-84ff-066035b9efa8


.
.
.

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编辑后

.
.
.
apiVersion: v1
data:
  config.yaml: |
kind: ConfigMap
metadata:
  creationTimestamp: "2019-11-21T13:07:05Z"
  name: cluster-monitoring-config
  namespace: openshift-monitoring
  resourceVersion: "404352"
  selfLink: /api/v1/namespaces/openshift-monitoring/configmaps/cluster-monitoring-config
  uid: d12c796a-0c5f-11ea-9832-063cd735b81c
.
.
.

.
.
.
apiVersion: v1
data:
  config.yaml: |
kind: ConfigMap
metadata:
  creationTimestamp: "2019-11-21T13:07:05Z"
  name: cluster-monitoring-config
  namespace: openshift-monitoring
  resourceVersion: "404352"
  selfLink: /api/v1/namespaces/openshift-monitoring/configmaps/cluster-monitoring-config
  uid: d12c796a-0c5f-11ea-9832-063cd735b81c
.
.
.

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在本例中，alertmanagerMain 和 prometheusK8s 监控组件使用 OpenShift Container Storage PVC。

列出使用 PVC 的 pod。

在本例中，消耗 PVC 的 alertmanagerMain 和 prometheusK8s pod 处于 Terminating 状态。这些 pod 不再使用 OpenShift Container Storage PVC 后，您可以删除 PVC。

oc get pod,pvc -n openshift-monitoring

$ oc get pod,pvc -n openshift-monitoring
NAME                                               READY   STATUS      RESTARTS AGE
pod/alertmanager-main-0                            3/3     Terminating   0      10h
pod/alertmanager-main-1                            3/3     Terminating   0      10h
pod/alertmanager-main-2                            3/3     Terminating   0      10h
pod/cluster-monitoring-operator-84cd9df668-zhjfn   1/1     Running       0      18h
pod/grafana-5db6fd97f8-pmtbf                       2/2     Running       0      10h
pod/kube-state-metrics-895899678-z2r9q             3/3     Running       0      10h
pod/node-exporter-4njxv                            2/2     Running       0      18h
pod/node-exporter-b8ckz                            2/2     Running       0      11h
pod/node-exporter-c2vp5                            2/2     Running       0      18h
pod/node-exporter-cq65n                            2/2     Running       0      18h
pod/node-exporter-f5sm7                            2/2     Running       0      11h
pod/node-exporter-f852c                            2/2     Running       0      18h
pod/node-exporter-l9zn7                            2/2     Running       0      11h
pod/node-exporter-ngbs8                            2/2     Running       0      18h
pod/node-exporter-rv4v9                            2/2     Running       0      18h
pod/openshift-state-metrics-77d5f699d8-69q5x       3/3     Running       0      10h
pod/prometheus-adapter-765465b56-4tbxx             1/1     Running       0      10h
pod/prometheus-adapter-765465b56-s2qg2             1/1     Running       0      10h
pod/prometheus-k8s-0                               6/6     Terminating   1      9m47s
pod/prometheus-k8s-1                               6/6     Terminating   1      9m47s
pod/prometheus-operator-cbfd89f9-ldnwc             1/1     Running       0      43m
pod/telemeter-client-7b5ddb4489-2xfpz              3/3     Running       0      10h

NAME                                                      STATUS  VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS                  AGE
persistentvolumeclaim/ocs-alertmanager-claim-alertmanager-main-0   Bound    pvc-2eb79797-1fed-11ea-93e1-0a88476a6a64   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   19h
persistentvolumeclaim/ocs-alertmanager-claim-alertmanager-main-1   Bound    pvc-2ebeee54-1fed-11ea-93e1-0a88476a6a64   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   19h
persistentvolumeclaim/ocs-alertmanager-claim-alertmanager-main-2   Bound    pvc-2ec6a9cf-1fed-11ea-93e1-0a88476a6a64   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   19h
persistentvolumeclaim/ocs-prometheus-claim-prometheus-k8s-0        Bound    pvc-3162a80c-1fed-11ea-93e1-0a88476a6a64   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   19h
persistentvolumeclaim/ocs-prometheus-claim-prometheus-k8s-1        Bound    pvc-316e99e2-1fed-11ea-93e1-0a88476a6a64   40Gi       RWO            ocs-external-storagecluster-ceph-rbd   19h

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删除相关的 PVC。请确定删除所有消耗存储类的 PVC。

oc delete -n openshift-monitoring pvc <pvc-name> --wait=true --timeout=5m

$ oc delete -n openshift-monitoring pvc <pvc-name> --wait=true --timeout=5m

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3.4.2. 从 OpenShift Container Storage 中删除监控堆栈

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