反向代理

使用命令 kubevpn proxy 代理所有的入站流量到本地电脑。

➜  ~ kubevpn proxy deployment/productpage
Connected to cluster
Injecting inbound sidecar for deployment/productpage
Checking rollout status for deployment/productpage
Waiting for deployment "productpage" rollout to finish: 1 old replicas are pending termination...
Waiting for deployment "productpage" rollout to finish: 1 old replicas are pending termination...
Rollout successfully for deployment/productpage
+----------------------------------------------------------+
| Now you can access resources in the kubernetes cluster ! |
+----------------------------------------------------------+
➜  ~

此时在本地使用 go 启动一个服务，用于承接流量。

package main

import (
	"io"
	"net/http"
)

func main() {
	http.HandleFunc("/", func(writer http.ResponseWriter, request *http.Request) {
		_, _ = io.WriteString(writer, "Hello world!")
	})
	_ = http.ListenAndServe(":9080", nil)
}

运行

go run hello.go &

使用 service name 的方式，直接访问集群中的 productpage 服务。

➜  ~ curl productpage:9080
Hello world!%
➜  ~ curl productpage.default.svc.cluster.local:9080
Hello world!%

可以看到直接击中了本地电脑的服务。