1. 在CentOS 6.3上通过源码安装Openstack Folsom之Keystone安装

lepevans

英雄你好，最后一步执行bash /etc/keystone/keystone_bash.sh时报
Traceback (most recent call last):
  File "/usr/bin/keystone", line 6, in <module>
    from keystoneclient.shell import main
  File "/usr/lib/python2.6/site-packages/keystoneclient/__init__.py", line 16, in <module>
    import pbr.version
ImportError: No module named pbr.version
Traceback (most recent call last):
  File "/usr/bin/keystone", line 6, in <module>
    from keystoneclient.shell import main
  File "/usr/lib/python2.6/site-packages/keystoneclient/__init__.py", line 16, in <module>
    import pbr.version
ImportError: No module named pbr.version

这个会不会也是组件版本的问题，之前也遇到ImportError: cannot import name exceptions的错误，于是在pip-requires制定了sqlalchemy的版本才顺利通过的。上面这个错误应该如何解决啊