We've run into an issue on an Amazon EC2 instance where we need a later version of glibc.
I understand I need to update Centos (current version is 5.6) to acheive this, and I've tried various approaches to doing this including the one mentioned here http://www.webhostbug.com/upgrade-centos-6-5-7/
I can get the pre-upgrade assistant to install (I think) but not run
There is also an issue that this is running Rightscale, and I think it's a 32bit host.
I managed to upgrade from 5.4 to 5.6 by editing CentOS-Base.repo and changing all the 5.4s to 5.6 which let me update some with yum update. However I can't seem to upgrade any further with this approach.
I just need to get to a version with glibc version 2.7