I'm running a TCP server (Docker instance / Go) on Kubernetes.. It's working and clients can connect and do intended stuff. I would like to make the TCP connection secure with an SSL certificate. I already got SSL working with a HTTP Rest API service running on the same Kubernetes cluster by using ingress controllers, but I'm not sure how to set it up with a regular TCP connection. Can anyone point me in the right direction ?
As you can read in the documentation:
An Ingress does not expose arbitrary ports or protocols. Exposing services other than HTTP and HTTPS to the internet typically uses a service of type Service.Type=NodePort or Service.Type=LoadBalancer.
Depending on the platform you are using you have different kind of LoadBalancers available which you can use to terminate your SSL traffic. If you have on-premise cluster you can set up additional nginx or haproxy server before your Kubernetes cluster which will handle SSL traffic.