4.13. 使用 Telemetry 服务

流程

1. 对 OpenStackControlPlane CR 进行补丁来部署 cluster-observability-operator ：

   $ oc create -f - <<EOF
   apiVersion: operators.coreos.com/v1alpha1
   kind: Subscription
   metadata:
     name: cluster-observability-operator
     namespace: openshift-operators
   spec:
     channel: stable
     installPlanApproval: Automatic
     name: cluster-observability-operator
     source: redhat-operators
     sourceNamespace: openshift-marketplace
   EOF

2. 等待安装成功：

   $ oc wait --for jsonpath="{.status.phase}"=Succeeded csv --namespace=openshift-operators -l operators.coreos.com/cluster-observability-operator.openshift-operators

3. 修补 OpenStackControlPlane CR 来部署 Ceilometer 服务：

   $ oc patch openstackcontrolplane openstack --type=merge --patch '
   spec:
     telemetry:
       enabled: true
       template:
         ceilometer:
           passwordSelector:
             ceilometerService: CeilometerPassword
           enabled: true
           secret: osp-secret
           serviceUser: ceilometer
   '

4. 启用 metrics 存储后端：

   $ oc patch openstackcontrolplane openstack --type=merge --patch '
   spec:
     telemetry:
       template:
         metricStorage:
           enabled: true
           monitoringStack:
             alertingEnabled: true
             scrapeInterval: 30s
             storage:
               strategy: persistent
               retention: 24h
               persistent:
                 pvcStorageRequest: 20G
   '

验证

1. 验证 alertmanager 和 prometheus pod 是否可用：

   $ oc get pods -l alertmanager=metric-storage
   NAME                            READY   STATUS    RESTARTS   AGE
   alertmanager-metric-storage-0   2/2     Running   0          46s
   alertmanager-metric-storage-1   2/2     Running   0          46s
   
   $ oc get pods -l prometheus=metric-storage
   NAME                          READY   STATUS    RESTARTS   AGE
   prometheus-metric-storage-0   3/3     Running   0          46s

2. 检查生成的 Ceilometer pod：

   CEILOMETETR_POD=`oc get pods -l service=ceilometer | tail -n 1 | cut -f 1 -d' '`
   oc exec -t $CEILOMETETR_POD -c ceilometer-central-agent -- cat /etc/ceilometer/ceilometer.conf

3. 检查已启用的 pollsters:

   $ oc get secret ceilometer-config-data -o jsonpath="{.data['polling\.yaml\.j2']}"  | base64 -d

4. 可选：根据环境要求覆盖默认 pollsters：

   $ oc patch openstackcontrolplane controlplane --type=merge --patch '
   spec:
     telemetry:
       template:
         ceilometer:
             defaultConfigOverwrite:
               polling.yaml.j2: |
                 ---
                 sources:
                   - name: pollsters
                     interval: 100
                     meters:
                       - volume.*
                       - image.size
             enabled: true
             secret: osp-secret
   '

后续步骤

1. 可选：对 OpenStackControlPlane CR 进行补丁，使其包含 日志记录 ：

   $ oc patch openstackcontrolplane openstack --type=merge --patch '
   spec:
     telemetry:
       template:
         logging:
         enabled: false
         ipaddr: 172.17.0.80
         port: 10514
         cloNamespace: openshift-logging
   '