This morning I intended on updating both servers from 6.7 to 6.8, and decided to try it out on the Failover server first. I ran a simple yum update on Failover, it ran like a charm, and the server is now happily reporting in as CentOS 6.8 (which I verified with cat /etc/*elease).
When I attempt the same yum update on Production, all I get is No Packages marked for Update. I tried running yum clean all thinking it might be a caching issue, but there was no change. I noticed the release notes mentioned that the yum update should run fine if you didn't mess with the default configuration too much, so I compared both servers' configuration at /etc/yum.conf and they are identical.
The last thing I checked was differences in the repolist on each server with yum repolist. There are some minor differences here, but my guess is that is because they are now running different versions of CentOS
Production Repolist
Code: Select all
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* epel: linux.mirrors.es.net
repo id repo name status
base CentOS-6 - Base 6,575
epel Extra Packages for Enterprise Linux 6 - x86_64 12,146
extras CentOS-6 - Extras 64
updates CentOS-6 - Updates 1,622
repolist: 20,407
Code: Select all
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
repo id repo name status
base CentOS-6 - Base 6,696
epel Extra Packages for Enterprise Linux 6 - x86_64 12,145
extras CentOS-6 - Extras 62
rackspace Rackspace Monitoring 1
updates CentOS-6 - Updates 94
repolist: 18,998