Determine status of state of Kubernetes port forwarding

1
votes

I am trying to find a way to determine the status of the "kubectl port-forward" command. There is a way to determine the readiness of a pod, a node...: i.e. "kubectl get pods" etc...

Is there a way to determine if the kubectl port-forward command has completed and ready to work?

Thank you.

2
kuberneteskubectl
IME kubectl port-forward is slow and unreliable; it's a super-handy debugging tool, but if you're starting to look at scripting it, you might be better off setting up a proper ingress path into your cluster. – David Maze

2 Answers

1
votes

I have the same understanding as you @VKR.

The way that I choose to solve this was to have a loop with a curl every second to check the status of the forwarded port. It works but I had hoped for a prebaked solution to this.

do curl:6379
timer=0
while curl is false and timer <100
  timer++
  curl:6379
  sleep 1

Thank you @Nicola and @David, I will keep those in mind when I get past development testing.

0
votes

Answering directly to your question - no, you can not determine the status of kubectl port-forward command. The only way of determining what is going on in the background is to inspect the output of this command. The output will be something like: 

Forwarding from 127.0.0.1:6379 -> 6379
Forwarding from [::1]:6379 -> 6379

I may suggest using service type NodePort instead of port-forward. Using the NodePort, you are able to expose your app as a service and have access from outside the Kubernetes. For more examples use this url.