Needed installed tools:
docker exec etcd-etcd-00-1 etcdctl endpoint status --endpoints=http://etcd-etcd-00-1:2379,http://etcd-etcd-01-1:2379,http://etcd-etcd-02-1:2379 -w table
etcdctl --endpoints=http://localhost:2379 member list
etcdctl --endpoints=http://localhost:2379 get --prefix /maroon/history
etcdctl --endpoints=http://localhost:2379 del --prefix /maroon
etcdctl --endpoints=http://localhost:2379 put key value
etcdctl --endpoints=http://localhost:2379 watch /maroon/latest