OpenStack Keystone如何同时开启V3和V2版本


openstack-software-diagram.png


我们知道OpenStack 最新版本Newton,keystone是V3版本,由于之前存在V2版本的应用,如何同时兼容呢?主要需要操作以下四步:

1.获取domain ID
[root@openstack-control-node1 ~]# openstack domain list
+----------------------------------+---------+---------+----------------+
| ID | Name | Enabled | Description |
+----------------------------------+---------+---------+----------------+
| d0e436a913f94ec28f3a1892e0a7a240 | default | True | Default Domain |
+----------------------------------+---------+---------+----------------+

2.编写Keystone配置文件,设置default_domain_id
[root@openstack-control-node1 ~]# vim /etc/keystone/keystone.conf 
[identity]

#
# From keystone
#

# This references the domain to use for all Identity API v2 requests (which are
# not aware of domains). A domain with this ID will be created for you by
# keystone-manage db_sync in migration 008. The domain referenced by this ID
# cannot be deleted on the v3 API, to prevent accidentally breaking the v2 API.
# There is nothing special about this domain, other than the fact that it must
# exist to order to maintain support for your v2 clients. (string value)
default_domain_id = d0e436a913f94ec28f3a1892e0a7a240

3.同步数据库
su -s /bin/sh -c "keystone-manage db_sync" keystone

4.重启Keystone服务

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