If you wants to upgrade CentOs version to latest version, we can do this by following some small steps .
1. We can check the current version by :
[root@server1 /]# cat /etc/redhat-release
CentOS release 5.2 (Final)
2. To upgrade :
# yum clean all
# yum update glibc*
# yum update yum* rpm* python*
# yum clean all
# yum update
If you get any dependency error of some packages, use this option:
# yum update –skip-broken
3. Reboot the machine. If its a VE,
# vzctl restart <VEID>
4. Check the version.
[root@server1 /]# cat /etc/redhat-release
CentOS release 5.5 (Final)
