k8s资源之hpa

我就是我 2023-07-01 05:24 23阅读 0赞

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目前刚开始写一个月，一共写了18篇原创文章，文章目录如下：

[istio多集群探秘，部署了50次多集群后我得出的结论][istio_50]

[istio多集群链路追踪，附实操视频][istio]

[istio防故障利器，你知道几个,istio新手不要读，太难！][istio_istio]

[istio业务权限控制，原来可以这么玩][istio 1]

[istio实现非侵入压缩，微服务之间如何实现压缩][istio 2]

[不懂envoyfilter也敢说精通istio系列-http-rbac-不要只会用AuthorizationPolicy配置权限][envoyfilter_istio_-http-rbac-_AuthorizationPolicy]

[不懂envoyfilter也敢说精通istio系列-02-http-corsFilter-不要只会vs][envoyfilter_istio_-02-http-corsFilter-_vs]

[不懂envoyfilter也敢说精通istio系列-03-http-csrf filter-再也不用再代码里写csrf逻辑了][envoyfilter_istio_-03-http-csrf filter-_csrf]

[不懂envoyfilter也敢说精通istio系列http-jwt\_authn-不要只会RequestAuthorization][envoyfilter_istio_http-jwt_authn-_RequestAuthorization]

[不懂envoyfilter也敢说精通istio系列-05-fault-filter-故障注入不止是vs][envoyfilter_istio_-05-fault-filter-_vs]

[不懂envoyfilter也敢说精通istio系列-06-http-match-配置路由不只是vs][envoyfilter_istio_-06-http-match-_vs]

[不懂envoyfilter也敢说精通istio系列-07-负载均衡配置不止是dr][envoyfilter_istio_-07-_dr]

[不懂envoyfilter也敢说精通istio系列-08-连接池和断路器][envoyfilter_istio_-08-]

[不懂envoyfilter也敢说精通istio系列-09-http-route filter][envoyfilter_istio_-09-http-route filter]

[不懂envoyfilter也敢说精通istio系列-network filter-redis proxy][envoyfilter_istio_-network filter-redis proxy]

[不懂envoyfilter也敢说精通istio系列-network filter-HttpConnectionManager][envoyfilter_istio_-network filter-HttpConnectionManager]

[不懂envoyfilter也敢说精通istio系列-ratelimit-istio ratelimit完全手册][envoyfilter_istio_-ratelimit-istio ratelimit]

————————————————

# Api版本： #

•**autoscaling****/v1                 \#****只支持通过****cpu****为参考依据，来改变****pod****副本数**

**autoscaling****/v2beta1       \#****支持通过****cpu****、内存、连接数以及用户自定义的资源指标数据为参考依据。**  
**autoscaling****/v2beta2       \#****同上，小的变动**

# targetAverageUtilization： #

[root@master01 targetCPUUtilizationPercentage]# cat ./*
    apiVersion: autoscaling/v1
    kind: HorizontalPodAutoscaler
    metadata:
      name: nginx-hpa
    spec:
      scaleTargetRef:
        apiVersion: apps/v1
        kind: Deployment
        name: nginx-deployment
      minReplicas: 1
      maxReplicas: 5
      targetCPUUtilizationPercentage: 50
    
    apiVersion: v1
    kind: Service
    metadata:
      name: nginx-clusterip-svc
    spec:
     selector:  
       app: nginx
     type: ClusterIP
     ports:
     -  name: http
        port: 8000      
        targetPort: 80
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: nginx-deployment
      labels:
        app: nginx
    spec:
      selector:
        matchLabels:
          app: nginx
      replicas: 2
      template:
        metadata:
          labels:
            app: nginx
        spec:
          containers:
          - name: nginx
            image: nginx
            ports:
            - containerPort: 80
            resources:
              requests:
                cpu: 0.01
              limits:
                cpu: 0.01

targetAverageValue：

[root@master01 targetAverageValue]# cat ./*
    apiVersion: autoscaling/v2beta1
    kind: HorizontalPodAutoscaler
    metadata:
      name: tomcat-hpa
    spec:
      scaleTargetRef:
        apiVersion: apps/v1
        kind: Deployment
        name: tomcat-deployment
      minReplicas: 1
      maxReplicas: 5
      metrics:
      - type: Resource
        resource:
          name: cpu
          targetAverageValue: 80m
      - type: Resource
        resource:
          name: memory
          targetAverageValue: 150Mi
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: tomcat-deployment
      labels:
        app: tomcat
    spec:
      selector:
        matchLabels:
          app: tomcat
      replicas: 2
      template:
        metadata:
          labels:
            app: tomcat
        spec:
          containers:
          - name: tomcat
            image: tomcat
            ports:
            - containerPort: 8080
            resources:
              requests: 
                cpu: 0.1
                memory: 100Mi
              limits:
                cpu: 0.2
                memory: 200Mi
    
    apiVersion: v1
    kind: Service
    metadata:
      name: tomcat-clusterip-svc
    spec:
     selector:  
       app: tomcat
     type: ClusterIP
     ports:
     -  name: http
        port: 8000      
        targetPort: 8080

# targetAverageUtilization： #

[root@master01 targetAverageUtilization]# cat ./*
    apiVersion: autoscaling/v2beta1
    kind: HorizontalPodAutoscaler
    metadata:
      name: tomcat-hpa
    spec:
      scaleTargetRef:
        apiVersion: apps/v1
        kind: Deployment
        name: tomcat-deployment
      minReplicas: 1
      maxReplicas: 5
      metrics:
      - type: Resource
        resource:
          name: cpu
          targetAverageUtilization: 80
      - type: Resource
        resource:
          name: memory
          targetAverageUtilization: 150
    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: tomcat-deployment
      labels:
        app: tomcat
    spec:
      selector:
        matchLabels:
          app: tomcat
      replicas: 2
      template:
        metadata:
          labels:
            app: tomcat
        spec:
          containers:
          - name: tomcat
            image: tomcat
            ports:
            - containerPort: 8080
            resources:
              requests: 
                cpu: 0.1
                memory: 100Mi
              limits:
                cpu: 0.2
                memory: 200Mi
    
    apiVersion: v1
    kind: Service
    metadata:
      name: tomcat-clusterip-svc
    spec:
     selector:  
       app: tomcat
     type: ClusterIP
     ports:
     -  name: http
        port: 8000      
        targetPort: 8080

# replicaset： #

[root@master01 replicaset]# cat ./*
    apiVersion: autoscaling/v1
    kind: HorizontalPodAutoscaler
    metadata:
      name: frontend-hpa
      labels:
        software: apache
        project: frontend
        app: hpa
        version: v1
    spec:
      scaleTargetRef:
        apiVersion: apps/v1
        kind: ReplicaSet
        name: frontend
      minReplicas: 1
      maxReplicas: 5
      targetCPUUtilizationPercentage: 30
    
    apiVersion: apps/v1
    kind: ReplicaSet
    metadata:
      name: frontend
      labels:
        app: guestbook
        tier: frontend
    spec:
      # this replicas value is default
      # modify it according to your case
      replicas: 3
      selector:
        matchLabels:
          tier: frontend
        matchExpressions:
          - {key: tier, operator: In, values: [frontend]}
      template:
        metadata:
          labels:
            app: guestbook
            tier: frontend
        spec:
          containers:
          - name: php-redis
            image: iaasfree/gb-frontend:v3 
            resources:
              requests:
                cpu: 10m
                memory: 10Mi
            env:
            - name: GET_HOSTS_FROM
              value: dns
              # If your cluster config does not include a dns service, then to
              # instead access environment variables to find service host
              # info, comment out the 'value: dns' line above, and uncomment the
              # line below.
              # value: env
            ports:
            - containerPort: 80
    apiVersion: v1
    kind: Service
    metadata:
      name: frontend-svc
    spec:
     selector:  
       tier: frontend
     type: ClusterIP
     ports:
     -  name: http
        port: 8000      
        targetPort: 80

# Prometheus： #

参考：[https://github.com/stefanprodan/k8s-prom-hpa][https_github.com_stefanprodan_k8s-prom-hpa]

[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAaHhwamF2YTE_size_8_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/20211007094240106.jpg?x-oss-process=image/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAaHhwamF2YTE=,size_8,color_FFFFFF,t_70,g_se,x_16
[istio_50]: https://mp.weixin.qq.com/s/_OPMjmWCDSTlmbAxytg33A
[istio]: https://mp.weixin.qq.com/s/kjvtno_UzJAGr1joxm3tvw
[istio_istio]: https://mp.weixin.qq.com/s/e2-p_NY31Mc5y07S4Bb1JQ
[istio 1]: https://mp.weixin.qq.com/s/iTV0SCQLhSOTYncp3PxoHQ
[istio 2]: https://mp.weixin.qq.com/s/eINlrT242RlAwfuZu1_PcA
[envoyfilter_istio_-http-rbac-_AuthorizationPolicy]: https://mp.weixin.qq.com/s/Q-yTGBNqkjOov49LTXPrPA
[envoyfilter_istio_-02-http-corsFilter-_vs]: https://mp.weixin.qq.com/s/bFMdrT7OKSqoWv8pDXOIqQ
[envoyfilter_istio_-03-http-csrf filter-_csrf]: https://mp.weixin.qq.com/s/dlG9phV-kMMxs4UPzuRNYg
[envoyfilter_istio_http-jwt_authn-_RequestAuthorization]: https://mp.weixin.qq.com/s/IfrJ-FdLYsdhPkDrcO_YXA
[envoyfilter_istio_-05-fault-filter-_vs]: https://mp.weixin.qq.com/s/a4gDXqD8uswgglMwkUph2Q
[envoyfilter_istio_-06-http-match-_vs]: https://mp.weixin.qq.com/s/TpS3DHdcaJiPivIS_jsIGw
[envoyfilter_istio_-07-_dr]: https://mp.weixin.qq.com/s/k-zJm7n7OOKg6MotQJYPAA
[envoyfilter_istio_-08-]: https://mp.weixin.qq.com/s/n_bJ3saNeTtXRprIymhwzg
[envoyfilter_istio_-09-http-route filter]: https://mp.weixin.qq.com/s/JAeZr0BMVQxIrB3S_7Ru0A
[envoyfilter_istio_-network filter-redis proxy]: https://mp.weixin.qq.com/s/B9IPTI8F3q42nVkqbQRlPw
[envoyfilter_istio_-network filter-HttpConnectionManager]: https://mp.weixin.qq.com/s/W3OPQWkCVvuHGS49cTNhlg
[envoyfilter_istio_-ratelimit-istio ratelimit]: https://mp.weixin.qq.com/s/KgiDsELNol27mgZvDbFsqw
[https_github.com_stefanprodan_k8s-prom-hpa]: https://github.com/stefanprodan/k8s-prom-hpa