在yum安装相关rpm包的过程当中有时会出现
如下错误：yum install elfutils-libelf*i686
Error: Protected multilib versions: elfutils-libelf-devel-0.152-1.el6.i686 != elfutils-libelf-devel-0.164-2.el6.x86_64
You could try using --skip-broken to work around the problem
** Found 10 pre-existing rpmdb problem(s), ‘yum check‘ output follows:
cifs-utils-4.8.1-19.el6.x86_64 has missing requires of libwbclient.so.0()(64bit)
gnome-vfs2-smb-2.24.2-6.el6.x86_64 has missing requires of libsmbclient >= (‘0‘, ‘3.0.8‘, ‘0.pre1.3‘)
gnome-vfs2-smb-2.24.2-6.el6.x86_64 has missing requires of libsmbclient.so.0()(64bit)
gvfs-smb-1.4.3-16.el6_5.x86_64 has missing requires of libsmbclient.so.0()(64bit)
sssd-1.9.2-129.el6_5.4.x86_64 has missing requires of libndr-krb5pac.so.0()(64bit)
sssd-1.9.2-129.el6_5.4.x86_64 has missing requires of libndr-krb5pac.so.0(NDR_KRB5PAC_0.0.1)(64bit)
sssd-1.9.2-129.el6_5.4.x86_64 has missing requires of libndr.so.0()(64bit)
sssd-1.9.2-129.el6_5.4.x86_64 has missing requires of libndr.so.0(NDR_0.0.1)(64bit)
sssd-1.9.2-129.el6_5.4.x86_64 has missing requires of libsamba-util.so.0()(64bit)
sssd-1.9.2-129.el6_5.4.x86_64 has missing requires of libsamba-util.so.0(SAMBA_UTIL_0.0.1)(64bit)
解决：可以先把i686去掉，看能不能装成功
然后还可以尝试
yum install zlib-devel libsmbclient* keyutils-libs-devel libselinux-devel
yum clean all
rm -f /var/lib/rpm/__db*
rpm --rebuilddb
yum update
另一个错误
yum install gtk2.*i686
Protected multilib versions: libtiff-3.9.4-9.el6_3.i686 != libtiff-3.9.4-10.el6_5.x86_64
Error: Protected multilib versions: audit-libs-2.2-2.el6.i686 != audit-libs-2.2-4.el6_5.x86_64
Error: Protected multilib versions: glib2-2.26.1-3.el6.i686 != glib2-2.26.1-7.el6_5.x86_64
Error: Protected multilib versions: pixman-0.26.2-5.el6_4.i686 != pixman-0.26.2-5.1.el6_5.x86_64
Error: Protected multilib versions: avahi-libs-0.6.25-12.el6.i686 != avahi-libs-0.6.25-12.el6_5.3.x86_64
Error: Protected multilib versions: libcom_err-1.41.12-18.el6.i686 != libcom_err-1.41.12-18.el6_5.1.x86_64
Error: Protected multilib versions: gnutls-2.8.5-10.el6_4.2.i686 != gnutls-2.8.5-14.el6_5.x86_64
Error: Protected multilib versions: 1:cups-libs-1.4.2-50.el6_4.5.i686 != 1:cups-libs-1.4.2-52.el6_5.2.x86_64
Error: Protected multilib versions: libjpeg-turbo-1.2.1-1.el6.i686 != libjpeg-turbo-1.2.1-3.el6_5.x86_64
Error: Protected multilib versions: libtasn1-2.3-3.el6_2.1.i686 != libtasn1-2.3-6.el6_5.x86_64
Error: Protected multilib versions: krb5-libs-1.10.3-10.el6_4.6.i686 != krb5-libs-1.10.3-15.el6_5.1.x86_64
Error: Protected multilib versions: libselinux-2.0.94-5.3.el6_4.1.i686 != libselinux-2.0.94-7.el6.x86_64
原因：多个库共存冲突
解决办法：在执行命令后面加上：--setopt=protected_multilib=false
再次执行：yum install gtk2.*i686 --setopt=protected_multilib=false
ok！
还可以把高版本的卸掉，装个低版本的组件。