yum --showduplicates

planet.centos.org提到的真挺好用的,如果最新版本有问题,可以这样通过查询历史版本,直接安装没有问题的老版本:
 [simonsun@magic ~]$ sudo yum --showduplicates list audacity
Loaded plugins: aliases, allowdowngrade, changelog,
              : downloadonly, fastestmirror, filter-data,
              : kernel-module, keys, kmod, list-data, merge-
              : conf, priorities, protect-packages,
              : protectbase, refresh-updatesd, security,
              : tmprepo, tsflags, upgrade-helper, verify,
              : versionlock
Loading mirror speeds from cached hostfile
 * addons: centos.cs.nctu.edu.tw
 * rpmforge: apt.sw.be
 * extras: centos.mirror.cdnetworks.com
 * updates: centos.mirror.cdnetworks.com
 * base: centos.mirror.cdnetworks.com
 * freshrpms: ayo.ie.freshrpms.net
Reading version lock configuration
0 packages excluded due to repository protections
Installed Packages
audacity.i386           1.3.4-2.el5.rf             installed
Available Packages
audacity.i386           1.3.0b-1.el5.rf            rpmforge
audacity.i386           1.3.4-1.el5.rf             rpmforge

[simonsun@magic music]$ sudo yum --showduplicates list kernel
Loaded plugins: aliases, changelog, downloadonly, fastestmirror, filter-data, keys, kmod, list-data, priorities, protect-packages,
              : protectbase, security, tmprepo, verify, versionlock
Loading mirror speeds from cached hostfile
 * addons: ftp.hostrino.com
 * base: ftp.hostrino.com
 * extras: ftp.hostrino.com
 * freshrpms: ayo.ie.freshrpms.net
 * rpmforge: ftp-stud.fht-esslingen.de
 * updates: ftp.hostrino.com
0 packages excluded due to repository protections
Reading version lock configuration
Installed Packages
kernel.i686                    2.6.18-164.10.1.el5              installed
Available Packages
kernel.i686                              2.6.18-164.el5                      base    
kernel.i686                           2.6.18-164.2.1.el5                       updates 
kernel.i686                                2.6.18-164.6.1.el5                            updates 
kernel.i686                             2.6.18-164.9.1.el5                                 updates 
kernel.i686                                 2.6.18-164.10.1.el5                            updates

[root@2308090088zjx ~]# yum --showduplicates list mysql-community-server --nogpgcheck 已加载插件:fastestmirror, langpacks Loading mirror speeds from cached hostfile Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was 14: curl#7 - "Failed connect to mirrorlist.centos.org:80; 操作现在正在进行" One of the configured repositories failed (未知), and yum doesn't have enough cached data to continue. At this point the only safe thing yum can do is fail. There are a few ways to work "fix" this: 1. Contact the upstream for the repository and get them to fix the problem. 2. Reconfigure the baseurl/etc. for the repository, to point to a working upstream. This is most often useful if you are using a newer distribution release than is supported by the repository (and the packages for the previous distribution release still work). 3. Run the command with the repository temporarily disabled yum --disablerepo=<repoid> ... 4. Disable the repository permanently, so yum won't use it by default. Yum will then just ignore the repository until you permanently enable it again or use --enablerepo for temporary usage: yum-config-manager --disable <repoid> or subscription-manager repos --disable=<repoid> 5. Configure the failing repository to be skipped, if it is unavailable. Note that yum will try to contact the repo. when it runs most commands, so will have to try and fail each time (and thus. yum will be be much slower). If it is a very temporary problem though, this is often a nice compromise: yum-config-manager --save --setopt=<repoid>.skip_if_unavailable=true Cannot find a valid baseurl for repo: base/7/x86_64 哪里出问题了
06-12
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