To upgrade CentOS Linux 5.3 to v5.4, you can follow these steps:
- Backup your important data and configuration files to ensure that you can recover them if necessary.
- Update the current system using the following command to install any available updates:
yum update
- Reboot the system to ensure that any kernel updates are loaded.
reboot
- Check the current CentOS version by running the following command:
cat /etc/redhat-release
- Download and install the CentOS 5.4 packages using the following command:
yum update centos-release
- Run the following command to update all the packages to the latest version:
yum update
- Reboot the system to ensure that any kernel updates are loaded.
reboot
- Verify the CentOS version again by running the following command:
cat /etc/redhat-release
The output should now show that the system is running CentOS Linux 5.4.
Note that upgrading a system to a new major release can sometimes cause issues with third-party software or custom configurations. It’s important to test the upgrade in a non-production environment before performing it on a production system, and to have a plan for rolling back the upgrade if necessary.