具有两个副本的 Kubernetes 部署：一个 pod 正在运行，另一个失败

Question

We have a deployment of a simple Node.js application with replica=2 . The first pod comes up and is perfectly running, the second pod is in state CrashLoopBackOff , because its readiness probe failed:

Readiness probe failed: Get http://100.107.65.32:8000/ : dial tcp 100.107.65.32:8000: getsockopt: connection refused

Unfortunately, the logs are empty, no matter whether you specify --previous or not.

It can't be a problem with the container or the underlying image, since pod 1 works without any hassle. I have found https://github.com/kubernetes/kubernetes/issues/62594 , but that is open and the solution proposed there is rather a workaround than a fix, especially since it does not explain anything on why this happens.

Any ideas of how to proceed with this?

Answer 1

The problem could be solved 🎉

Actually, the pod was just takings its time to start, and the probes started too early, when the pod was not yet ready. Increasing the initial probe delay helped.