CentOS 7 kernel upgrade tutorial.

Upgrading the kernel on CentOS 7 requires the following steps:

1. Check current kernel version:

   • Open a terminal and run the following command:

     uname -r

2. Add ELRepo source:

   • Run the following command to add the ELRepo source:

     rpm --import 

3. Install new kernel:

   • Run the following command to install the latest stable kernel:

     yum --enablerepo=elrepo-kernel install kernel-ml

4. Update boot manager (GRUB) configuration:

   • Run the following command to update the GRUB configuration file:

     grub2-mkconfig -o /boot/grub2/grub.cfg

5. Restart the system:

   • Run the following command to restart the system:

     reboot

6. Verify kernel version:

   • After reboot, open the terminal again and run the following command to verify the new kernel version:

     uname -r

By performing the above steps, you will successfully upgrade the kernel on CentOS 7. Please note that kernel upgrades involve core components of the system, so make sure you have a backup of your system before performing this operation, and proceed with caution in a production environment. Additionally, you may need to do more configuration and tweaking depending on your specific needs.

Remember, through hands-on operation and practice, you will better master CentOS 7 kernel upgrade.

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