How to force yum to update only to exact minor OS version

I have a default AWS image with the version CentOS 6.7. If I run

yum update

I am getting CentOS 6.9.

Is there any way to force yum to update only to version 6.8 and not 6.9?

Answer

Yes it is possible. Follow these steps:

• Find a mirror that is closer to you using: http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os.
• Replace 6.9 with 6.8, e.g., the URL would look like:http://mirrors.gigenet.com/centos/6.8/os/x86_64/.

• Create a yum repo file in /etc/yum.repos.d. Let’s name the file User-Stepped.repo.

• Content of the file would look like the following:

  ~]# cat /etc/yum.repos.d/User-Stepped.repo
  [User_Stepped]
  name=A stepped repo - CentOS 6.8
  baseurl=http://mirrors.gigenet.com/centos/6.8/os/x86_64/
  gpgcheck=1
  gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
  

• Execute the following command to update to CentOS 6.8

  ~]# yum clean all
  ~]# yum --disablerepo='*' --enablerepo=User_Stepped update
  

Use the same name in --enablerepo as you used inside the square brackets of the User-Stepped.repo file.