This tutorial will guide you on how to perform a Update on RedHat 8.1 Linux server. Before that check here to Register and Subscribe with RedHat Enterprise.
1. Check Kernel Version
[root@worldwide ~]# uname -a
Linux worldwide.linux.net 4.18.0-147.el8.x86_64 #1 SMP Thu Sep 26 15:52:44 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
2. Update Server
After a successful certificate registration with RedHat, execute yum -y update command to update RedHat 8.1 Linux Server.
[root@worldwidelinux ~]# yum -y update
You will see the 1000's of packages are downloading, installing and updating on your terminal screen. Once done you will see the Complete! status at the end. Check the newly updated kernel using uname command.
3. Reboot Server
To start with updated kernel, we need to restart server. You can manually reboot server by pressing power button or execute a reboot command in terminal.
[root@worldwide ~]# reboot
4. Check updated new Kernel Version
[root@worldwide ~]# uname -a
Linux worldwide.linux.net 4.18.0-305.10.2.el8_4.x86_64 #1 SMP Mon Jul 12 04:43:18 EDT 2021 x86_64 x86_64 x86_64 GNU/Linux