HOWTO: get Docker Containers under Centos 5 with Xen

Centos5 is getting long in the tooth, but then again, many of my servers are antiques that would find native Centos6 to be problematic. A recent adventure in disaster recovery led me to upgrade several of my Xen DomU’s from CentOS 5 to CentOS 6, but I was distressed to discover that about the minimum you can get […]

[SOLVED] mail loops back to me (MX problem?) for virtual machine

Sometimes they just gang up on you. I was migrating my sendmail server from a NAT address to a bridge address when it all started. Xen has this really nasty habit of zapping your hardware MAC address if you don’t get the nat routing configure just right. There’s obviously some way to get it to revert, because occasionally […]