容器服务 ACK：优化大规模Terway集群NetworkPolicy的扩展性

部署NetworkPolicy中继

1. 登录容器服务管理控制台。
2. 升级集群的Terway组件至最新版本，具体步骤请参见管理组件。
3. 使用以下模板并执行kubectl apply -f部署NetworkPolicy中继组件Typha。

   apiVersion: v1
   kind: Service
   metadata:
     name: calico-typha
     namespace: kube-system
     labels:
       k8s-app: calico-typha
   spec:
     ports:
       - port: 5473
         protocol: TCP
         targetPort: calico-typha
         name: calico-typha
     selector:
       k8s-app: calico-typha
   
   ---
   
   apiVersion: apps/v1
   kind: Deployment
   metadata:
     name: calico-typha
     namespace: kube-system
     labels:
       k8s-app: calico-typha
   spec:
     replicas: 3
     revisionHistoryLimit: 2
     selector:
       matchLabels:
         k8s-app: calico-typha
     template:
       metadata:
         labels:
           k8s-app: calico-typha
         annotations:
           cluster-autoscaler.kubernetes.io/safe-to-evict: 'true'
       spec:
         nodeSelector:
           kubernetes.io/os: linux
         hostNetwork: true
         tolerations:
           - operator: Exists
         serviceAccountName: terway
         priorityClassName: system-cluster-critical
         containers:
         - image: registry-vpc.{REGION-ID}.aliyuncs.com/acs/typha:v3.20.2
           name: calico-typha
           ports:
           - containerPort: 5473
             name: calico-typha
             protocol: TCP
           env:
             - name: TYPHA_LOGSEVERITYSCREEN
               value: "info"
             - name: TYPHA_LOGFILEPATH
               value: "none"
             - name: TYPHA_LOGSEVERITYSYS
               value: "none"
             - name: TYPHA_CONNECTIONREBALANCINGMODE
               value: "kubernetes"
             - name: TYPHA_DATASTORETYPE
               value: "kubernetes"
             - name: TYPHA_HEALTHENABLED
               value: "true"
           livenessProbe:
             httpGet:
               path: /liveness
               port: 9098
               host: localhost
             periodSeconds: 30
             initialDelaySeconds: 30
           readinessProbe:
             httpGet:
               path: /readiness
               port: 9098
               host: localhost
             periodSeconds: 10
   
   ---
   
   apiVersion: policy/v1beta1
   kind: PodDisruptionBudget
   metadata:
     name: calico-typha
     namespace: kube-system
     labels:
       k8s-app: calico-typha
   spec:
     maxUnavailable: 1
     selector:
       matchLabels:
         k8s-app: calico-typha
   
   ---
   
   apiVersion: apiextensions.k8s.io/v1
   kind: CustomResourceDefinition
   metadata:
     name: bgppeers.crd.projectcalico.org
   spec:
     scope: Cluster
     group: crd.projectcalico.org
     versions:
     - name: v1
       served: true
       storage: true
       schema:
         openAPIV3Schema:
           type: object
           properties:
             apiVersion:
               type: string
     names:
       kind: BGPPeer
       plural: bgppeers
       singular: bgppeer

   说明

   • 修改模板中的{REGION-ID}为对应的地域。
   • 根据集群规模修改其中的replicas的副本数（一个副本对应200个节点，最小3副本）。
4. 执行以下命令修改Terway的配置项文件eni-config，增加中继配置felix_relay_service: calico-typha。

   kubectl edit cm eni-config -n kube-system
   #在打开的文件中增加以下中继配置，与eni_conf参数对齐。
   felix_relay_service: calico-typha

5. 执行以下命令重启集群中的Terway。

   kubectl get pod -n kube-system  | grep terway | awk '{print $1}' | xargs kubectl delete -n kube-system pod

   预计输出：

   pod "terway-eniip-8hmz7" deleted
   pod "terway-eniip-dclfn" deleted
   pod "terway-eniip-rmctm" deleted

关闭集群NetworkPolicy

当您不需要NetworkPolicy的功能时，也可以采用直接关闭集群的NetworkPolicy功能，从而降低NetworkPolicy的代理对API Server的压力。

1. 修改Terway的配置项文件eni-config，增加禁用NetworkPolicy的配置disable_network_policy: "true"。

   kubectl edit cm -n kube-system eni-config 
   # 修改（如果有以下key）或者新增：
   disable_network_policy: "true"

2. 执行以下命令重启集群中的Terway。

   kubectl get pod -n kube-system  | grep terway | awk '{print $1}' | xargs kubectl delete -n kube-system pod

   预计输出：

   pod "terway-eniip-8hmz7" deleted
   pod "terway-eniip-dclfn" deleted
   pod "terway-eniip-rmctm" deleted