If you receive a following error in alertmanager

1etcd cluster "kube-etcd": database size in use on instance xxx.xxx.xxx.xxx:2381
2is 49.55% of the actual allocated disk space, please run defragmentation 
3(e.g. etcdctl defrag) to retrieve the unused fragmented disk space.

it can be easily solved by running a...

When using kube-prometheus-stack and kubernetes cluster provisioned by kubeadm you will likely have an issue of prometheus not being able to connect to the kube-proxy metrics

It can be easily fixed by editing it’s config map

kubectl edit cm/kube-proxy -n kube-system

Change the metricsBindAddress property from...