安装Nginx必要组件时解决 yum -y install pcre pcre-devel安装出错

yum -y install pcre pcre-devel安装出现下列错误

Error:  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 pcre which is missing some
            dependency that another package requires. Yum is trying to
            solve this by installing an older version of pcre 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 pcre.otherarch ... this should give you an error
            message showing the root cause of the problem.

         2. You have multiple architectures of pcre 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 pcre 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).

解决：

首先查看pcre是否重复

# rpm -qa | grep pcre
pcre-8.32-15.el7_2.1.i686
pcre-8.32-15.el7_2.1.x86_64

然后用

#yum remove 其中一个的pcre的包名       //卸载

再重新安装：

# yum install -y pcre pcre-devel