命令行里登录openstack的方式有两种：
一种是密码登录： 在keystone里存在已经创建的用户和密码
另外一种是token的方式登录： 生成token，使用这个token登录openstack
单独如何安装keystone：
生成一个token值，写入keystone的配置文件中
# openssl rand -hex 10
写入配置文件中
需要数据库，安装：
最好修改character=utf8 ，之后重启服务
创建keystone数据库：
MariaDB [keystone]> grant all privilegeson keystone.* to keystone@'%' identified by 'redhat';
Query OK, 0 rows affected (0.00 sec)
MariaDB [keystone]> grant all privilegeson keystone.* to keystone@'localhost' identified by 'redhat';
Query OK, 0 rows affected (0.00 sec)
MariaDB [keystone]> grant all privilegeson keystone.* to keystone@'192.168.179.140' identified by 'redhat';
Query OK, 0 rows affected (0.00 sec)
使用keystone用户登录到数据库：
继续修改keystone配置文件如下：
修改keystone的数据库：
mysql://用户名：密码@数据库的IP/数据库名称
keystone的服务端口，0.0.0.0 表示监听所有的接口
管理端口35357
rabbitmq配置：
至此，配置完毕。
同步数据库：
重启openstack-keystone服务失败之后
[root@osp3 keystone]# systemctl statusopenstack-keystone.service
● openstack-keystone.service - OpenStackIdentity Service (code-named Keystone)
Loaded: loaded (/usr/lib/systemd/system/openstack-keystone.service;disabled; vendor preset: disabled)
Active: failed (Result: start-limit) since Sat 2018-01-13 19:10:26 CST;52s ago
Process: 9582 ExecStart=/usr/bin/keystone-all (code=exited, status=1/FAILURE)
MainPID: 9582 (code=exited, status=1/FAILURE)
Jan 13 19:10:26 osp3.coa.com systemd[1]: Unitopenstack-keystone.service entered failed state.
Jan 13 19:10:26 osp3.coa.com systemd[1]:openstack-keystone.service failed.
Jan 13 19:10:26 osp3.coa.com systemd[1]:openstack-keystone.service holdoff time over, scheduling restart.
Jan 13 19:10:26 osp3.coa.com systemd[1]:start request repeated too quickly for openstack-keystone.service
Jan 13 19:10:26 osp3.coa.com systemd[1]:Failed to start OpenStack Identity Service (code-named Keystone).
Jan 13 19:10:26 osp3.coa.com systemd[1]: Unitopenstack-keystone.service entered failed state.
Jan 13 19:10:26 osp3.coa.com systemd[1]:openstack-keystone.service failed.
[root@osp3 keystone]# journalctl -xe
Jan 13 19:10:26 osp3.coa.comkeystone-all[9582]: File"/usr/lib/python2.7/site-packages/oslo_log/log.py", line 314, in_setup_logging_from_conf
Jan 13 19:10:26 osp3.coa.comkeystone-all[9582]: filelog = logging.handlers.WatchedFileHandler(logpath)
Jan 13 19:10:26 osp3.coa.comkeystone-all[9582]: File "/usr/lib64/python2.7/logging/handlers.py",line 392, in __init__
Jan 13 19:10:26 osp3.coa.comkeystone-all[9582]: logging.FileHandler.__init__(self, filename, mode,encoding, delay)
Jan 13 19:10:26 osp3.coa.com keystone-all[9582]:File "/usr/lib64/python2.7/logging/__init__.py", line 902, in__init__
Jan 13 19:10:26 osp3.coa.comkeystone-all[9582]: StreamHandler.__init__(self, self._open())
Jan 13 19:10:26 osp3.coa.comkeystone-all[9582]: File "/usr/lib64/python2.7/logging/__init__.py",line 925, in _open
Jan 13 19:10:26 osp3.coa.comkeystone-all[9582]: stream = open(self.baseFilename, self.mode)
Jan 1319:10:26 osp3.coa.com keystone-all[9582]: IOError: [Errno 13] Permissiondenied: '/var/log/keystone/keystone.log'
Jan 13 19:10:26 osp3.coa.com systemd[1]:openstack-keystone.service: main process exited, code=exited, status=1/FAILURE
Jan 13 19:10:26 osp3.coa.com systemd[1]:Failed to start OpenStack Identity Service (code-named Keystone).
-- Subject: Unit openstack-keystone.servicehas failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit openstack-keystone.service hasfailed.
--
-- The result is failed.
Jan 13 19:10:26 osp3.coa.com systemd[1]: Unitopenstack-keystone.service entered failed state.
Jan 13 19:10:26 osp3.coa.com systemd[1]:openstack-keystone.service failed.
Jan 13 19:10:26 osp3.coa.com systemd[1]:openstack-keystone.service holdoff time over, scheduling restart.
Jan 13 19:10:26 osp3.coa.com systemd[1]:start request repeated too quickly for openstack-keystone.service
Jan 13 19:10:26 osp3.coa.com systemd[1]:Failed to start OpenStack Identity Service (code-named Keystone).
-- Subject: Unit openstack-keystone.servicehas failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit openstack-keystone.service hasfailed.
--
-- The result is failed.
Jan 13 19:10:26 osp3.coa.com systemd[1]: Unitopenstack-keystone.service entered failed state.
Jan 13 19:10:26 osp3.coa.com systemd[1]:openstack-keystone.service failed.
修改配置文件权限：
修改日志权限：
再次重启：
