How to fix Yum Repo Error in CentOS

The YUM stand for (Yellowdog Updater Modified) is a free and open-source command-line package utility for Linux rpm based operating system.

 

How to fix Yum Repo Error in CentOS 6

 [root@localhost ~]# sudo yum update

Output Error :- 

Loaded plugins: fastestmirror, refresh-packagekit, security
Setting up Update Process
Determining fastest mirrors
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
 Eg. Invalid release/repo/arch combination/
removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt
Error: Cannot find a valid baseurl for repo: base

Step 1) Before we continue to fix YumRepo Error let's check the CentOS version.

$ cat /etc/redhat-release

Step 2) Make a Backup file of /etc/yum.repo.d/Centos-Base.

$ cp -a /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bkp

Step 3) Edit /etc/yum.repo.d/Centos-Base.repo file and do some changes.

vim  /etc/yum.repos.d/CentOS-Base.repo

Step 4) Comment all the Row started from "mirrorlist=http"

Step 5) Uncomment all the Row started from "#baseurl=http"

Step 6) Change the baseurl from http://mirror.centos.org/ to http://vault.centos.org/

By using following vim editor command

• Come out from Insert mode    press Esc
  

• Replace string                         :%s/mirror/vault/g

• Save file and exit                     :wq!
  
  

Step 7) sudo yum update

Now Successfully running yum update command.