Linux Cluster Management Console (LCMC) is a GUI that helps to configure Pacemaker, DRBD and KVM clusters.
Cool - setting up a plain MariaDB cluster was surprisingly easy. Unfortunately Ubuntu support is not yet complete: I had to bypass the installation check, and thus ended up setting up corosync myself). I had to run update-rc.d to get automatic restart of the cluster service after reboot - this should be provided either by the installation or the management console when creating a cluster. Diagnostics/message filtering expects syslog hard-coded at /var/log/messages, so syslog must be reconfigured to take advantage of it. Other than that it was breeze to actually get a fully functional cluster. With full Ubuntu support I would have given a rating of 5 stars.