CentOS 7更新时出现：Multilib version problems问题的解决方法
前言
关于CentOS的出身就不多多说了，拥有RHEL所有功能和性能，甚至更加友好，最重要一点是免费，深受大家的喜爱，CentOS的受欢迎程度并不亚于Ubuntu，之前安装了CentOS7，关于安装的教程，来一起看看详细的介绍吧。
发现问题
最近这两天在更新CentOS7系统时，出现了Multilib version problems错误，执行命令：
1 | # yum update |
出现了的错误信息：
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35 | ....---> Package libcap-ng.i686 0:0.7.5-4.el7 will be installed---> Package libstdc++.i686 0:4.8.5-16.el7 will be installed--> Finished Dependency ResolutionError: Multilib version problems found. This often means that the root cause is something else and multilib version checking is just pointing out that there is a problem. Eg.: 1. You have an upgrade for glibc which is missing some dependency that another package requires. Yum is trying to solve this by installing an older version of glibc of the different architecture. If you exclude the bad architecture yum will tell you what the root cause is (which package requires what). You can try redoing the upgrade with --exclude glibc.otherarch ... this should give you an error message showing the root cause of the problem. 2. You have multiple architectures of glibc installed, but yum can only see an upgrade for one of those architectures. If you don't want/need both architectures anymore then you can remove the one with the missing update and everything will work. 3. You have duplicate versions of glibc installed already. You can use "yum check" to get yum show these errors. ...you can also use --setopt=protected_multilib=false to remove this checking, however this is almost never the correct thing to do as something else is very likely to go wrong (often causing much more problems). Protected multilib versions: glibc-2.17-196.el7.i686 != glibc-2.17-157.el7_3.1.x86_64Error: Protected multilib versions: pcre-8.32-17.el7.i686 != pcre-8.32-15.el7_2.1.x86_64Error: Protected multilib versions: elfutils-libs-0.168-8.el7.i686 != elfutils-libs-0.166-2.el7.x86_64...... |
解决过程如下：
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28 | //查询重复的软件包# rpm -q systemd-libssystemd-libs-219-30.el7.x86_64systemd-libs-219-42.el7_4.1.x86_64//删除旧版# rpm -e systemd-libs-219-30.el7.x86_64error: Failed dependencies: systemd-libs = 219-30.el7 is needed by (installed) libgudev1-219-30.el7.x86_64//仍然出现依赖问题，继续查询libgudev1的版本信息# rpm -q libgudev1libgudev1-219-30.el7.x86_64//发现只有一个版本，升级试一下# yum update libgudev1......Updated: libgudev1.x86_64 0:219-42.el7_4.1 Complete!# rpm -q libgudev1libgudev1-219-42.el7_4.1.x86_64//升级完成后，删除旧版本的systemd-libs# rpm -e systemd-libs-219-30.el7.x86_64# rpm -q systemd-libssystemd-libs-219-42.el7_4.1.x86_64 |
最后查询发现只剩下最新版本的systemd-libs，其他重复版本包的解决，也是同样的过程。
核心的命令主要是：
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2 | rpm -q package-namesrpm -e package-full-version |
总结
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