Gene Poole wrote:
We've got about 200 existing servers running CentOS/RHEL 5.6 and all new servers are being provisioned using CentOS/RHEL 6.1. So that everything is consistent we need to upgrade the servers running CentOS/RHEL 5.6. I've searched the CentOS wiki, the Red Hat site, and the internet looking for something official on upgrading/migrating from CentOS/RHEL 5.x to CentOS/RHEL 6.x. There's got to be a way other than having 2 times hardware.
Any ideas???
What we do is build one, then create /boot/new and /new on the next server, rsync over to them, then mkdir /boot/old and /old, and (using zsh with modules loaded) mv * old, mv old/lost+found ., mv old/new/* ., make sure a few things are correct (for example, ifcfg-eth*, /etc/ssh/), and sync, then reboot. All your other stuff is fine....
mark