Static ports (instead of random)

[caseypugh]

This tool has been super useful! Feature request: It'd be nice if there was a way to generate the same, unique port for each pod every time. I'm using a StatefulSet with 5 replicas and would like to guarantee that pod-0 through pod-5 always get the same unique port. I don't really care what the external ports are, as long as they stay the same.

[0blu]

Interesting use case, I assume that your client software cannot handle dynamic ports?

In general, I think your idea is possible.
The tool just needs to allocate the Service and add an internal annotation to the StatefulSet.
When new pods are created, this tool takes a free Service and assigns the Endpoint to the pod.

I am not quite sure how rolling upgrades behave and if there is the possibility of more than 5 (your example) nodes running at the same time.

Unfortunately, I don't have time to implement such a feature current.

[caseypugh]

It's just a nice-to-have for the project I'm working on. The software can handle it... it creates a P2P connection with another client (outside the cluster) and when the pod needs to restart, would be nice to maintain the same IP:port for the P2P network it's connecting to.

Thanks for considering it!