1.创建envoy configmap,deploy,并启动&mount配置文件

创建envoy.yaml

admin:
  address:
    socket_address: { address: 127.0.0.1, port_value: 9901 }

static_resources:
  listeners:
    - name: listener_0
      address:
        socket_address: { address: 0.0.0.0, port_value: 10000 }
      filter_chains:
        - filters:
            - name: envoy.filters.network.http_connection_manager
              typed_config:
                "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
                stat_prefix: ingress_http
                codec_type: AUTO
                route_config:
                  name: local_route
                  virtual_hosts:
                    - name: local_service
                      domains: ["*"]
                      routes:
                        - match: { prefix: "/" }
                          route: { cluster: some_service }
                http_filters:
                  - name: envoy.filters.http.router
                    typed_config:                                                                       ##新增
                      "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router		##新增		
  clusters:
    - name: some_service
      connect_timeout: 0.25s
      type: LOGICAL_DNS
      lb_policy: ROUND_ROBIN
      load_assignment:
        cluster_name: some_service
        endpoints:
          - lb_endpoints:
              - endpoint:
                  address:
                    socket_address:
                      address: nginx
                      port_value: 80

创建 ConfigMapkubectl create configmap envoy-config --from-file=envoy.yaml

创建envoy-deploy.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    run: envoy
  name: envoy
spec:
  replicas: 1
  selector:
    matchLabels:
      run: envoy
  template:
    metadata:
      labels:
        run: envoy
    spec:
      containers:
      - image: envoyproxy/envoy-dev
        name: envoy
        volumeMounts:
        - name: envoy-config
          mountPath: "/etc/envoy"
          readOnly: true
      volumes:
      - name: envoy-config
        configMap:
          name: envoy-config

创建deploymentkubectl create -f envoy-deploy.yaml
暴露端口kubectl expose deploy envoy --selector run=envoy --port=10000 --type=NodePort
查看podkubectl get deploy,pod,svc -owide

请求端口：curl 10.101.234.29:10000

进入 Pod 查看 envoy 进程和配置

[root@k8s-master ~]# kubectl exec -it  envoy-fb5d77cc9-gq9fb /bin/bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
root@envoy-fb5d77cc9-gq9fb:/# 

在pod里面执行ps -ef 以及cat /etc/envoy/envoy.yaml

更改配置的监听端口并测试访问入口的变化

编辑configmap修改监听端口10000为18888

kubectl edit configmap envoy-config

删除旧的podkubectl delete pod envoy-fb5d77cc9-gq9fb
修改svc配置 kubectl edit svc envoy，将端口改为18888

通过非级联删除的方法逐个删除对象

1.删除deploymentkubectl delete deploy envoy --cascade=orphan
2.删除 replicationsetkubectl delete rs envoy-fb5d77cc9 --cascade=orphan
3.删除podkubectl delete pod envoy-fb5d77cc9-gq9fb