corosync+pacemaker+crmsh(centos7+ansible)
http://www.cnblogs.com/chenghuan/articles/7531591.html
http://www.cnblogs.com/chenghuan/category/1062331.html
http高可用+负载均衡 corosync + pacemaker + pcs
http://www.cnblogs.com/elvi/p/7736570.html
openstack pike 集群高可用 安装 部署 目录汇总
http://www.cnblogs.com/elvi/p/7613861.html