It’s been a long time since we moved to a new server, but now it’s finally moving time again. This means, no longer we are running Solaris but now we are back on Linux with KVM virtualisation.
There isn’t much to say about it, we are running standard KVM hosts with virtio for both network and block device access. Disks are mapped to LVM partitions on the host and we use Kernel Samepage Merging to overcommit memory. That being said, Solaris served us very well over the years and we are going to miss some of the Solaris capabilities. Zones + ZFS + Crossbow really worked well for us and it was really fun to work with a system that create bootenviroments and snapshots before upading.
It was easy to manage, easy get reallocate memory, space and create complex virtual networks. In the end we moved away not because we think Linux is better, but because there is much more software available for Linux (particularly some experimental stuff I want to get my hands on) and because Solaris went closed source again. It was too hard to get updates and up-to-date software in the end.
Anyway..this is just a short heads up that I am still blogging. More stuff coming up soon.