2.3. 管理监控组件的 CPU 和内存资源

流程

1. 编辑 openshift-monitoring 项目中的 cluster-monitoring-config 配置映射：

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

2. 添加值来为您要配置的每个组件定义资源限值和请求。

   重要

   确保为限制设置的值始终高于为请求设置的值。否则，会出现错误，容器将不会运行。

   设置资源限值和请求示例

   apiVersion: v1
   kind: ConfigMap
   metadata:
     name: cluster-monitoring-config
     namespace: openshift-monitoring
   data:
     config.yaml: |
       alertmanagerMain:
         resources:
           limits:
             cpu: 500m
             memory: 1Gi
           requests:
             cpu: 200m
             memory: 500Mi
       prometheusK8s:
         resources:
           limits:
             cpu: 500m
             memory: 3Gi
           requests:
             cpu: 200m
             memory: 500Mi
       thanosQuerier:
         resources:
           limits:
             cpu: 500m
             memory: 1Gi
           requests:
             cpu: 200m
             memory: 500Mi
       prometheusOperator:
         resources:
           limits:
             cpu: 500m
             memory: 1Gi
           requests:
             cpu: 200m
             memory: 500Mi
       metricsServer:
         resources:
           requests:
             cpu: 10m
             memory: 50Mi
           limits:
             cpu: 50m
             memory: 500Mi
       kubeStateMetrics:
         resources:
           limits:
             cpu: 500m
             memory: 1Gi
           requests:
             cpu: 200m
             memory: 500Mi
       telemeterClient:
         resources:
           limits:
             cpu: 500m
             memory: 1Gi
           requests:
             cpu: 200m
             memory: 500Mi
       openshiftStateMetrics:
         resources:
           limits:
             cpu: 500m
             memory: 1Gi
           requests:
             cpu: 200m
             memory: 500Mi
       nodeExporter:
         resources:
           limits:
             cpu: 50m
             memory: 150Mi
           requests:
             cpu: 20m
             memory: 50Mi
       monitoringPlugin:
         resources:
           limits:
             cpu: 500m
             memory: 1Gi
           requests:
             cpu: 200m
             memory: 500Mi
       prometheusOperatorAdmissionWebhook:
         resources:
           limits:
             cpu: 50m
             memory: 100Mi
           requests:
             cpu: 20m
             memory: 50Mi

3. 保存文件以使改变生效。受新配置影响的 Pod 会自动重新部署。