How to install RPMs related to kernel debug

[BearIBeer]

As the subject, how can I install the RPMs like kernel-debuginfo, kernel-debuginfo-common for centos 8.6.

yum search cannot get any clue about it, my repolist is below, I know this might be a stupid question but please give me some guidance.
[root@localhost tmp]# yum repolist
repo id repo name
appstream CentOS Linux 8 - AppStream
baseos CentOS Linux 8 - BaseOS
elrepo ELRepo.org Community Enterprise Linux Repository - el8
epel Extra Packages for Enterprise Linux 8 - x86_64
epel-modular Extra Packages for Enterprise Linux Modular 8 - x86_64
extras CentOS Linux 8 - Extras
powertools CentOS Linux 8 - PowerTools

I also did not find them from here:http://debuginfo.centos.org/8/x86_64/Packages/

[TrevorH]

CentOS Linux 8 is dead, as of the end of 2021. There is no CentOS Linux 8.6, the last version ever was 8.5. If you want a RHEL clone that is up to date then you need to switch to one of the alternatives like Rocky/Alma/OEL. Once you're on an up to date distro then you should be able to run something like

debuginfo-install kernel-$(uname -r)