Networking lab in kubernetes

Kubernetes
#1

Hii Team , Regarding troubleshooting lab for networking, I have one confusion regarding kube-proxy config path which path is correct?

I have tried to make changes in daemonset as per configmap file, but my kube-proxy pod is still in error state.

Kindly assist.

Thanks
Sakshi

#2

All pods and services are running correctly in namespace triton. How to know that issue is due to kube proxy ?

Thanks

#3

This second problem doesn’t involve the triton namespace at all; it’s about figuring out why kube-proxy is broken. If you try k -n kube-system describe po kube-proxy-dcrbc (the name in my instance of the lab), you won’t see anything that will explain why the pod is not up. But if you log at the logs:

root@controlplane ~ ➜  k -n kube-system logs kube-proxy-dcrbc 
E0302 04:14:39.418432       1 run.go:74] "command failed" err="failed complete: open /var/lib/kube-proxy/configuration.conf: no such file or directory"

So the config file wasn’t found. If you look at the daemonset that created that pod, you’ll see that the /var/lib/kube-porxy directory is mounted into the pod’s container from a configmap, kube-proxy, which is also in the kube-system namespace. So we look at the configmap. It has two keys that will be treated as files: config.conf, and kubeconfig.conf. The latter is a kubeconfig file, but the config.conf file looks like configuration for kube proxy. So we change the “configuration.conf” string in the daemonset to “config.conf”, and this fixes kube-proxy.