通过rpmbuild打包nova时，出现了如下报错：

File "/usr/lib/python2.7/site-packages/keystoneauth1/session.py", line 26, in 
    
         import requests  File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 63, in 
     
          from . import utils  File "/usr/lib/python2.7/site-packages/requests/utils.py", line 26, in 
      
           from .compat import (ImportError: cannot import name integer_types
      
     
    

大致看了以下报错信息，应该是python的requests模块安装有问题，查看之前的依赖安装日志，出现过如下内容：

Failed:  python2-requests.noarch 0:2.11.1-1.el7                                      python2-urllib3.noarch 0:1.16-1.el7

这两个模块安装失败，于是单独安装这两个模块，但是均报错

Downloading packages:(1/2): python2-urllib3-1.16-1.el7.noarch.rpm                                                                                    | 126 kB  00:00:00     (2/2): python2-requests-2.11.1-1.el7.noarch.rpm                                                                                 | 105 kB  00:00:00     -------------------------------------------------------------------------------------------------------------------------------------------------------Total                                                                                                                  190 kB/s | 231 kB  00:00:01     Running transaction checkRunning transaction testTransaction test succeededRunning transaction  Installing : python2-urllib3-1.16-1.el7.noarch                                                                                                   1/2 Error unpacking rpm package python2-urllib3-1.16-1.el7.noarcherror: unpacking of archive failed on file /usr/lib/python2.7/site-packages/urllib3/packages/ssl_match_hostname: cpio: rename  Installing : python2-requests-2.11.1-1.el7.noarch                                                                                                2/2 Error unpacking rpm package python2-requests-2.11.1-1.el7.noarcherror: python2-urllib3-1.16-1.el7.noarch: install failederror: unpacking of archive failed on file /usr/lib/python2.7/site-packages/requests/packages/chardet: cpio: rename  Verifying  : python2-urllib3-1.16-1.el7.noarch                                                                                                   1/2   Verifying  : python2-requests-2.11.1-1.el7.noarch                                                                                                2/2 Failed:  python2-requests.noarch 0:2.11.1-1.el7                                      python2-urllib3.noarch 0:1.16-1.el7

应该是这两个模块已存在的版本有问题，于是将site-packages中的这两个模块的内容删除

[root@localhost site-packages]# rm -rf urlurlgrabber/                     urllib3/                        urllib3-1.21.dist-info/         urlgrabber-3.10-py2.7.egg-info  urllib3-1.16-py2.7.egg-info/[root@localhost site-packages]# rm -rf urllib3*[root@localhost site-packages]# rm -rf requestsrequests/                                requestsexceptions/                      requests_mock/requests-2.11.1-py2.7.egg-info/          requestsexceptions-1.1.3-py2.7.egg-info/ requests_mock-1.3.0.dist-info/requests-2.13.0.dist-info/               requestsexceptions-1.2.0.dist-info/      [root@localhost site-packages]# rm -rf requests[root@localhost site-packages]# rm -rf requests-*

再安装模块即可成功

Running transaction checkRunning transaction testTransaction test succeededRunning transaction  Installing : python2-urllib3-1.16-1.el7.noarch                                                                                                   1/2   Installing : python2-requests-2.11.1-1.el7.noarch                                                                                                2/2   Verifying  : python2-urllib3-1.16-1.el7.noarch                                                                                                   1/2   Verifying  : python2-requests-2.11.1-1.el7.noarch                                                                                                2/2 Installed:  python2-requests.noarch 0:2.11.1-1.el7                                                                                                               Dependency Installed:  python2-urllib3.noarch 0:1.16-1.el7                                                                                                                  Complete!

再通过rpmbuild打包，就没有任何问题了。