70936d4dbd
* Update cluster health check command for newer etcd
Existing docs assume the older (v3.2) etcdctl `health-check` command but with a 3.4.3 cluster (which is what kubeadm creates in the static manifest now), that subcommand is no longer supported and returns 404 errors like:
```
root@etcd-1:~# docker run --rm -it --net host -v /etc/kubernetes:/etc/kubernetes quay.io/coreos/etcd:${ETCD_TAG} etcdctl --cert-file /etc/kubernetes/pki/etcd/peer.crt --key-file /etc/kubernetes/pki/etcd/peer.key --ca-file /etc/kubernetes/pki/etcd/ca.crt --endpoints https://10.170.68.181:2379 cluster-health
cluster may be unhealthy: failed to list members
Error: unexpected status code 404
```
* PR review changes
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| .. | ||
| _index.md | ||
| control-plane-flags.md | ||
| create-cluster-kubeadm.md | ||
| ha-topology.md | ||
| high-availability.md | ||
| install-kubeadm.md | ||
| kubelet-integration.md | ||
| self-hosting.md | ||
| setup-ha-etcd-with-kubeadm.md | ||
| troubleshooting-kubeadm.md | ||