The mission of the etcdadm subproject is to make it easier to operate etcd in any environment. Today etcdadm is a CLI with a workflow inspired by kubeadm, but other features and use cases are planned.
If you are interested in etcdadm and want to attend the bi-weekly meeting, please help choose a time: https://doodle.com/poll/a3zxmru3rx8fdct5.
I will share an update on Friday, May 10.
P.S. I have cross-posted this to https://groups.google.com/forum/#!aboutgroup/kubernetes-sig-cluster-lifecycle