安装文档：
https://github.com/yongluo2013/osf-openstack-training/blob/master/installation/openstack-icehouse-for-centos65.md
RDO源变更为https://repos.fedorapeople.org/openstack/EOL/openstack-icehouse/rdo-release-icehouse-4.noarch.rpm
在安装yum install -y openstack-utils时报错 错误：Cannot retrieve repository metadata (repomd.xml) for repository: openstack-icehouse.
1.更新curl版本
2.更改rdo-release.repo文件内容 修改baseurl为 https://repos.fedorapeople.org/openstack/EOL/openstack-icehouse/epel-6/ 注释掉skip_if_unavailable=0和priority=98
Keystone安装（与文档不一致的地方）
1.为keystone建表 这步先跳过
2.初始化keystone数据库 openstack-db --init --service keystone --password openstack
报错如下：
IOError: [Errno 13] Permission denied: ‘/var/log/keystone/keystone.log‘
Error updating the database. Please see /var/log/keystone/ logs for details.
需把对应的/var/log/keystone/keystone.log删掉，把原先初始化的drop掉（执行初始化的命令，会提示你先drop的命令），重新初始化
原文：http://www.cnblogs.com/jp927/p/4858018.html