A Simple go TCP echo server. Written to learn and test Kubernetes TCP networking.
Test with Docker
Run the container from a terminal:
docker run --rm -it -e TCP_PORT=2701 -e NODE_NAME="EchoNode" -p 2701:2701 cjimti/go-echoIn another terminal run:
telnet localhost 2701Test with Kubernetes
cd k8s
kubectl create -f . You should now have two TCP echo containers running:
kubectl get pods --selector=app=tcp-echoNAME READY STATUS RESTARTS AGE
tcp-echo-deployment-777d856787-5fhb4 1/1 Running 0 27s
tcp-echo-deployment-777d856787-rh9tp 1/1 Running 0 27sYou should also have a service that connection port 32701 to the pods:
kubectl get service --selector=app=tcp-echo-serviceNAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
tcp-echo-service NodePort 10.102.207.113 <none> 2701:32701/TCP 35m
Echo some data, replace ANY_NODE_IP with a location of a node:
telnet ANY_NODE_IP 32701
After connecting, type the word hello and hit return:
Trying x.x.x.x...
Connected to node1.example.com.
Escape character is '^]'.
Welcome, you are connected to node node1.example.com.
Running on Pod tcp-echo-deployment-777d856787-rh9tp.
In namespace default.
With IP address 192.168.33.39.
Service default.
hello
hello
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