问题：
[root@gg ~]# yum install -y perl-DBD-MySQL
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Setting up Install Process
wbg | 4.1 kB 00:00 ...
Not using downloaded repomd.xml because it is older than what we have:
Current : Fri Sep 26 20:03:04 2014
Downloaded: Fri Sep 26 20:02:42 2014
Resolving Dependencies
--> Running transaction check
---> Package perl-DBD-MySQL.x86_64 0:4.013-3.el6 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=====================================================================================================================================
Package Arch Version Repository Size
=====================================================================================================================================
Installing:
perl-DBD-MySQL x86_64 4.013-3.el6 wbg 134 k
Transaction Summary
=====================================================================================================================================
Install 1 Package(s)
Total download size: 134 k
Installed size: 338 k
Downloading Packages:
Error Downloading Packages:
perl-DBD-MySQL-4.013-3.el6.x86_64: failure: ../Packages/perl-DBD-MySQL-4.013-3.el6.x86_64.rpm from wbg: [Errno 256] No more mirrors to try.
解决方法：
[root@gg yum.repos.d]# yum clean all
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Cleaning repos: wbg
Cleaning up Everything
[root@gg yum.repos.d]# yum makecache
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
wbg | 4.1 kB 00:00 ...
wbg/group_gz | 211 kB 00:00 ...
wbg/filelists_db | 3.3 MB 00:00 ...
wbg/primary_db | 3.1 MB 00:00 ...
wbg/other_db | 1.4 MB 00:00 ...
Metadata Cache Created
[root@gg yum.repos.d]# yum update
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Setting up Update Process
No Packages marked for Update
再次进行安装：问题已经解决
[root@gg yum.repos.d]# ls
redhat.repo wbg.repo
[root@gg yum.repos.d]# yum install -y perl-DBD-MySQL
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package perl-DBD-MySQL.x86_64 0:4.013-3.el6 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
=====================================================================================================================================
Package Arch Version Repository Size
=====================================================================================================================================
Installing:
perl-DBD-MySQL x86_64 4.013-3.el6 wbg 134 k
Transaction Summary
=====================================================================================================================================
Install 1 Package(s)
Total download size: 134 k
Installed size: 338 k
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Warning: RPMDB altered outside of yum.
Installing : perl-DBD-MySQL-4.013-3.el6.x86_64 1/1
Verifying : perl-DBD-MySQL-4.013-3.el6.x86_64 1/1
Installed:
perl-DBD-MySQL.x86_64 0:4.013-3.el6
Complete!