Upgrade Kernel Linux Latest Long Time Support For Centos AlmaLinux and RockyLinux

 Upgrade Kernel Linux Latest Long Time Support

This upgrade is for Centos, AlmaLinux and RockyLinux

*** At your own risk. Know what you are doing. No support available ***

dnf update and reboot (Make sure get downtime approval for Production)

Install repository from  http://elrepo.org/tiki/HomePage

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

Install repository Centos 8, AlmaLinux 8 and RockyLinux 8

dnf install https://www.elrepo.org/elrepo-release-8.el8.elrepo.noarch.rpm

Refer website for different version of Centos, AlmaLinux and RockyLinux

To enable Long Time Support LTS http://elrepo.org/tiki/kernel-lt

dnf --enablerepo=elrepo-kernel install kernel-lt


edit fail /etc/default/grub and update or add with this preferences

GRUB_DEFAULT=saved
GRUB_SAVEDEFAULT=true

save the changes and run this commands

grub2-set-default 0

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


reboot and select kernel 5.4 or later LTS from Grub menu, or you just wait for login prompt or SSH.

Check with command

uname -a

Linux LinuxMy 5.4.210-1.el8.elrepo.x86_64 #1 SMP Tue Aug 9 17:41:36 EDT 2022 x86_64 x86_64 x86_64 GNU/Linux

This setting to improved network connection for Congestion control

https://blog.cloudflare.com/http-2-prioritization-with-nginx/

edit and add into /etc/sysctl.conf


net.core.default_qdisc = fq
net.ipv4.tcp_congestion_control = bbr


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