Mount an iso of the CentOS version you want to upgrade to
# mkdir /media/CentOS
# mount /home/sysop/CentOS-6.10-x86_64-bin-DVD1.iso /media/CentOS/ -t iso9660 -o loop
Show current CentOS version
# more /etc/redhat-release
CentOS release 6.6 (Final)
Perform upgrade
# yum clean all
# yum --disablerepo=* --enablerepo=c6-media update
Transaction Summary
=============================
Install 24 Package(s)
Upgrade 392 Package(s)
Total download size: 412 M
Is this ok [y/N]: y
Downloading Packages:
-----------------------------
Total 129 MB/s | 412 MB 00:03
warning: rpmts_HdrFromFdno: Header V3 RSA/SHA1 Signature, key ID c105b9de: NOKEY
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Importing GPG key 0xC105B9DE:
Userid : CentOS-6 Key (CentOS 6 Official Signing Key) <centos-6-key@centos.org>
Package: centos-release-6-6.el6.centos.12.2.x86_64 (@anaconda-CentOS-201410241409.x86_64/6.6)
From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6
Is this ok [y/N]: y
...
Complete!
Reboot system
# reboot
CentOS release 6.10 (Final)
Kernel 2.6.32-754.el6.x86_64 on an x86_64
localhost login:
