How to Update CentOS Linux

Introduction #

It is a best practice to update your server on a regular schedule for security and stability. Use this guide to keep your CentOS server updated.

Supported Versions #

This guide applies to the following versions, both with and without SELinux enabled.

  • CentOS 8
  • CentOS 7
  • CentOS 6

Make a Backup #

Always make a backup before updating your system.

1. Update the Package Database #

Use yum check-update to update the package database from the enabled repositories.

$ sudo yum check-update

2. Upgrade Packages #

Use yum update to upgrade the packages.

$ sudo yum update

3. Restart the Server #

$ sudo reboot

Conclusion #

Periodic updates keep your server secure and stable. Make sure you have a snapshot or backup strategy in place before updating.

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