Highly available LINSTOR Controller with Pacemaker

Part of the design of LINSTOR is that if the central LINSTOR Controller goes down, all the storage still remains up and accessible. This should allow ample time to repair the downed system hosting the LINSTOR Controller. Still, in the majority of cases, it is preferred to run the LINSTOR Controller in a container within […]

Change the cluster distribution without downtime

Recently we’ve upgraded one of our virtualization clusters (more RAM), and in the course of this did an upgrade of the virtualization hosts from Ubuntu Lucid to RHEL 6.3 — without any service interruption.