CentOS - yum Multilib Version Problems Found

Sometimes when you use "yum" to install a package, you get the following errors:

# yum install openssl
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package openssl.x86_64 0:1.0.0-27.el6_4.2 will be updated
---> Package openssl.x86_64 0:1.0.1e-16.el6_5.7 will be an update
--> Finished Dependency Resolution
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 openssl which is missing some
            dependency that another package requires. Yum is trying to
            solve this by installing an older version of openssl 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 openssl.otherarch ... this should give you an error
            message showing the root cause of the problem.

         2. You have multiple architectures of openssl installed, but
            yum can only see an upgrade for one of those arcitectures.
            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 openssl 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: openssl-1.0.1e-16.el6_5.7.x86_64 != openssl-1.0.0-27.el6_4.2.i686
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

If you are getting the above error, it looks like you have some multiple package problem. What you can do is:

# rpm -qa | grep openssl
openssl-devel-1.0.0-27.el6_4.2.x86_64
openssl-1.0.0-27.el6_4.2.x86_64
openssl-1.0.0-27.el6_4.2.i686

This shows you have both openssl-1.0.0-27.el6_4.2.x86_64 and openssl-1.0.0-27.el6_4.2.i686 installed. So depends on your architecture, you should remove the wrong architecture. In my case which is the i686 one.

Do a

# rpm --erase --nodeps openssl-1.0.0-27.el6_4.2.i686

Then

# yum update "openssl*"

Verify:

# rpm -qa | grep openssl
openssl-devel-1.0.1e-16.el6_5.7.x86_64
openssl-1.0.1e-16.el6_5.7.x86_64