While using kubectl port-forward function I was able to succeed in port forwarding a local port to a remote port. However it seems that after a few minutes idling the connection is dropped. Not sure why that is so.
Here is the command used to portforward:
kubectl --namespace somenamespace port-forward somepodname 50051:50051Error message:
Forwarding from 127.0.0.1:50051 -> 50051
Forwarding from [::1]:50051 -> 50051
E1125 17:18:55.723715 9940 portforward.go:178] lost connection to podWas hoping to be able to keep the connection up
Seems there is a 5 minute timeout that can be overridden with kubelet parameters:
https://github.com/kubernetes/kubernetes/issues/19231
If you want to pass something higher than 5 minutes (or unlimited) into your kubelets, you can specify the
streaming-connection-idle-timeout. E.g.--streaming-connection-idle-timeout=4hto set it to 4 hours. Or:--streaming-connection-idle-timeout=0to make it unlimited. (DEPRECATED: This parameter should be set via the config file specified by the Kubelet's --config flag. See https://kubernetes.io/docs/tasks/administer-cluster/kubelet-config-file/ for more information.)
Setting kube's streaming-connection-idle-timeout to 0 should be a right solution, but if you don't want to change anything, you can use while-do construction
Format: while true; do <<YOUR COMMAND HERE>>; done
So just inputing in CLI: while true; do kubectl --namespace somenamespace port-forward somepodname 50051:50051; done should keep kubectl reconnecting on connection lost