使用RDO一键安装OpenStack出现异常Error: Could not start Service[rabbitmq-server]
系统环境：
Oracle VirtualBox 4.38 或VMWare WorkStation
CentOS-7.2-x86_64-bin-DVD1.iso
安装了一半报如下错误：
Applying Puppet manifests [ ERROR ]
ERROR : Error appeared during Puppet run: 192.168.2.32_amqp.pp
Error: Could not start Service[rabbitmq-server]: Execution of ‘/usr/bin/systemctl start rabbitmq-server’ returned 1: Job for rabbitmq-server.service failed because the control process exited with error code. See “systemctl status rabbitmq-server.service” and “journalctl -xe” for details.
You will find full trace in log /var/tmp/packstack/20160910-201157-ovx0Sg/manifests/192.168.2.32_amqp.pp.log
Please check log file /var/tmp/packstack/20160910-201157-ovx0Sg/openstack-setup.log for more information
解决方法： 修改 /etc/hosts文件，添加 127.0.0.1 centos-dev (centos-dev为当前linux机器名)