英文:
Tcp client not connecting to server when using istio
问题
我为在istio环境中检查TCP连接创建了两个示例应用程序（tcp-server和tcp-client）。使用以下链接在g0中创建服务器和客户端：
https://www.linode.com/docs/guides/developing-udp-and-tcp-clients-and-servers-in-go/
我在Kubernetes集群中部署了这些应用程序，并在没有istio的情况下进行了测试，一切正常。
但是，在安装istio（使用演示配置，按照此链接进行安装：https://istio.io/latest/docs/setup/getting-started/）并重新部署应用程序以填充envoy-proxy之后，客户端无法连接到服务器。
此外，使用以下命令可以使服务器成功连接：
sh -c "echo world | nc 10.244.1.29 1234"
我做错了什么？
英文:
I created two sample application(tcp-server and tcp-client) for checking TCP connection in istio environment. Used the below link to create server and client in g0
https://www.linode.com/docs/guides/developing-udp-and-tcp-clients-and-servers-in-go/
Deployed the application in kubernetes cluster and tested without istio, it is working fine.
But after installing istio(demo configuration, followed this url to install istio: https://istio.io/latest/docs/setup/getting-started/),
and redeploying the apps to fill with envoy-proxy, the client is not connecting to server
Also using below command makes the server connect success
sh -c "echo world | nc 10.244.1.29 1234" is
What am I doing wrong?
答案1
得分: 1
发布我找到的解决方案。
问题：我尝试使用IP地址和NodePort连接到服务器，在Istio环境中无法正常工作。
解决方案：从客户端而不是提供服务器节点的IP地址和NodePort，而是提供服务器应用程序的服务名称和容器端口。
额外信息：要在集群外使用客户端，请为服务器创建网关和虚拟服务。在外部客户端中，将Istio入口Pod的NodePort和IP地址作为服务器目标。
英文:
Posting the solution I found.
Issue: I was trying to connect to server using ip address and nodePort, which some how not working in istio environment
Solution: From Client instead of providing ip address and nodePort of server node, give service name and container port of server app.
Extra Info: For using client from outside cluster, create gateway and virtual service for server. In your external client provide nodePort and ip address of istio-ingress pod as server destination
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