1,open port 2379,2380 .https://www.cnblogs.com/breg/p/5728237.html
2, need etcd.conf file.http://www.361way.com/etcd-cluster/5468.html
3,open /etc/etcd/cert/etcd-key.pem: permission denied
http://www.mamicode.com/info-detail-2427329.html
set the permisssion to user to use!!!
finally you will success!
this case the result is wonderfully right! show like below