cannot run kubeadm init on centos

I am trying to run kubeadm init on my centos 8 server and I am getting this error

I0609 09:51:54.527931 2575529 version.go:255] remote version is much newer: v1.27.2; falling back to: stable-1.23
[init] Using Kubernetes version: v1.23.17
[preflight] Running pre-flight checks
    [WARNING FileExisting-tc]: tc not found in system path
error execution phase preflight: [preflight] Some fatal errors occurred:
    [ERROR FileExisting-conntrack]: conntrack not found in system path
    [ERROR DirAvailable--var-lib-etcd]: /var/lib/etcd is not empty
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`
To see the stack trace of this error execute with --v=5 or higher

so as the error says, tc and conntrack are missing, i tried to install it and got the below error.

Centos_8.x_x86_64                                                                                 0.0  B/s |   0  B     00:00    
Errors during downloading metadata for repository 'Centos-8.x':
  - Curl error (37): Couldn't read a file:// file for file:///root/os/repodata/repomd.xml [Couldn't open file /root/os/repodata/repomd.xml]
Error: Failed to download metadata for repo 'Centos-8.x': Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

This is probably not working due to the fact that CentOS Linux 8 has reached EOL. As per the official article, the contents of the official repository of CentOS Linux 8 were removed from http://mirror.centos.org/ to http://vault.centos.org/, where it will be archived permanently since Centos Linux 8 will not be able to provide updates to the content after the EOL date.

Workaround 1: Refer to Aaron Kili’s article on Tecmint

To fix the error, open your terminal or login via ssh, and run the following commands to change the repo URL to point to vault.centos.org, from the official CentOS repos.

Here you can use the sed command to edit the required directives or parameters in the repo configuration files:

sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*

Workaround 2 : Refer to Techglimpse content written by Ramya Santhosh. Follow the below steps to resolve your issue:

Step 1: Go to the /etc/yum.repos.d/ directory.

[root@autocontroller ~]# cd /etc/yum.repos.d/

Step 2: Run the below commands

[root@autocontroller ~]# sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*
[root@autocontroller ~]# sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-*

Step 3: Now run the yum update

[root@autocontroller ~]# yum update -y