Centos – yum update entire release but limit to a prior version

centoscentos6centos6.2

We need to update yum update but we want to stay one release back. For example, we have CentOS 6.2 and want to move to 6.3. By default, it looks like yum update will install 6.4.

On RedHat, this may be done with the subscription-manager. However, because the subscription-manger is not available on CentOS, this can not be used.

Best Answer

Go into /etc/yum.repos.d/, and carefully look at all of the files in there.

For each file that points to a CentOS repository, disable it by setting enabled=0, and make a copy that points to the CentOS 6.3 repo directories on vault.centos.org. Any directory with a "repodata" subdirectory is usable as a yum repository directory.

You'll probably at least want:

[centos63]
name=CentOS 6.3 - $basearch
baseurl=http://vault.centos.org/6.3/os/$basearch
enabled=1
cost=1000

[centos63-updates]
name=CentOS 6.3 Updates - $basearch
baseurl=http://vault.centos.org/6.3/updates/$basearch
enabled=1
cost=1000

Note that you won't get any security updates that came out since CentOS 6.4 was released. If you install the yum-plugin-security module, you may be able to use commands like yum --enablerepo=centos --security update-minimal to pull in just the security updates, but I have not checked that, and have not even verified the yum repository names.

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