CentOS (Community Enterprise Operating System) is a Linux distribution; derived from Redhat Enterprise Linux. CentOS is most widely used Linux operating system behind Debian OS, it uses same source code from Redhat enterprise Linux except logo and other trade marks. CentOS is managed by communities, often releases the updates for major version. Here is the small guide to update CentOS 6.3 to CentOS 6.4.
Before doing update, we need to focus on some prerequisite.
- Backup config files.
- Backup log files.
- Backup databases.
- Backup customized scripts.
- Backup other important files.
Open up terminal and switch to root
Check the current release.
CentOS release 6.3 (Final)
update the machine.
verify the release after updating.
CentOS release 6.4 (Final)
That’s all. Now the system successfully updated to CentOS 6.4.