安装Centos 6.5上yum更新的epel依赖项

Question

我想我不太明白epel repo在哪里读取python更新的依赖项。例如，当我运行sudo yum update时，我得到以下内容，然后成功地运行pip install requests和pip install six以满足列出的依赖项，但仍然得到关于依赖项的相同消息。我还可以在我的/usr/lib/python2.6/site-packages文件夹中看到请求和6个包，也可以在python中导入，不会出现任何问题。

epel从我的CentOSBase.repo文件：

[epel]
name = none
baseurl = http://mirror.rightscale.com/epel/6/x86_64/archive/20140514/
  http://ec2-us-east-mirror.rightscale.com/epel/6/x86_64/archive/20140514/
  http://ec2-us-west-mirror.rightscale.com/epel/6/x86_64/archive/20140514/
failovermethod=priority
gpgcheck=1
enabled=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-6

# yum repolist
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
 * base: mirror.rightscale.com
 * centosplus: mirror.rightscale.com
 * epel: mirror.symnds.com
 * extras: mirror.rightscale.com
 * rightscale-epel: mirror.rightscale.com
 * updates: mirror.rightscale.com
rightscale-epel                                                                                                                                                                                                        |  951 B     00:00
repo id                                                                                               repo name                                                                                                                         status
base                                                                                                  none                                                                                                                               6,367
centosplus                                                                                            none                                                                                                                                  48
epel                                                                                                  Extra Packages for Enterprise Linux 6 - x86_64                                                                                    11,830
extras                                                                                                none                                                                                                                                  14
jenkins                                                                                               Jenkins                                                                                                                              314
percona                                                                                               CentOS 6 - Percona                                                                                                                   671
puppetlabs-deps                                                                                       Puppet Labs Dependencies El 6 - x86_64                                                                                                77
puppetlabs-products                                                                                   Puppet Labs Products El 6 - x86_64                                                                                                   538
rightscale-epel                                                                                       none                                                                                                                                 285
updates                                                                                               none                                                                                                                                 909
repolist: 21,053

即使手动尝试rpm -ivh python-boto-2.38.0-1.el6.noarch.rpm，也会产生：

error: Failed dependencies:
    python-requests is needed by python-boto-2.38.0-1.el6.noarch
    python-rsa is needed by python-boto-2.38.0-1.el6.noarch
    python-six is needed by python-boto-2.38.0-1.el6.noarch

# sudo yum update
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
 * base: ec2-us-west-mirror.rightscale.com
 * centosplus: ec2-us-west-mirror.rightscale.com
 * epel: mirror.symnds.com
 * extras: ec2-us-west-mirror.rightscale.com
 * rightscale-epel: ec2-us-west-mirror.rightscale.com
 * updates: ec2-us-west-mirror.rightscale.com
rightscale-epel                                                                                |  951 B     00:00
Setting up Update Process
Resolving Dependencies
--> Running transaction check
---> Package libunwind.x86_64 0:1.1-2.el6 will be updated
---> Package libunwind.x86_64 0:1.1-3.el6 will be an update
---> Package python-boto.noarch 0:2.27.0-1.el6 will be updated
---> Package python-boto.noarch 0:2.38.0-1.el6 will be an update
--> Processing Dependency: python-six for package: python-boto-2.38.0-1.el6.noarch
--> Processing Dependency: python-rsa for package: python-boto-2.38.0-1.el6.noarch
--> Processing Dependency: python-requests for package: python-boto-2.38.0-1.el6.noarch
---> Package python-pip.noarch 0:1.3.1-4.el6 will be updated
---> Package python-pip.noarch 0:7.1.0-1.el6 will be an update
---> Package ssmtp.x86_64 0:2.61-21.el6 will be updated
---> Package ssmtp.x86_64 0:2.61-22.el6 will be an update
--> Running transaction check
---> Package python-boto.noarch 0:2.38.0-1.el6 will be an update
--> Processing Dependency: python-six for package: python-boto-2.38.0-1.el6.noarch
--> Processing Dependency: python-requests for package: python-boto-2.38.0-1.el6.noarch
---> Package python-rsa.noarch 0:3.1.1-5.el6 will be installed
--> Finished Dependency Resolution
Error: Package: python-boto-2.38.0-1.el6.noarch (epel)
           Requires: python-requests
Error: Package: python-boto-2.38.0-1.el6.noarch (epel)
           Requires: python-six
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

Answer 1

手动pip安装绝不会满足RPM的依赖，实际上可能会与供应商或存储库提供的包发生冲突(在文件存在的意义上，而不是在任何RPM意义上)，这取决于在哪里安装了什么。依赖项是RPM包的一部分，通常通过例如yum等将其排序到数据库中。

yum install python-boto在我的RHEL6+EPEL测试系统上正常工作，所以我不确定您做了什么会导致列出的错误。除了EPEL，您还使用包存储库吗？我肯定看到了支持EPEL和其他软件包存储库的主机包之间的冲突，并且必须手动卸载和重新安装软件包，以纠正由这种多功能存储库主机(例如，带有EPEL和rpmfusion的主机)产生的安装冲突和错误。

手动pip安装也可能会使问题复杂化；如果我安装pip，我会将它们安装到主目录，或者肯定不会安装到RPM所使用的任何供应商空间。