How to Exclude Specific Packages from Yum Update #2

1. Exclude Packages with Command

 # yum update --exclude=kernel* --exclude=php*

2. Exclude Packages from Auto Update

[main]
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=0
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
gpgcheck=1
plugins=1
installonly_limit=5
exclude=kernel* redhat-release* php* mysql* httpd*

3. Exclude 32-bit or 64-bit Packages

exclude=*.i?86 *.i686