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 curl which is missing some
dependency that another package requires. Yum is trying to
solve this by installing an older version of curl 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 curl.otherarch ... this should give you an error
message showing the root cause of the problem.
2. You have multiple architectures of curl 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 curl 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).
保护多库版本：curl-7.29.0-46.el7.x86_64 != curl-7.50.3-1.el7.centos.x86_64
[Error] Failed to install curl安装SS的时候出现CURL报错，打算重装。
使用命令，查看当前的CURL版本
rpm -q curl显示
curl-7.12.1-8.rhel4
直接使用命令卸载
rpm -e --nodeps curl-7.12.1-8.rhel4
