Provisioning a Galera Cluster on Ubuntu 18.04

So, we want to bring up a Galera cluster, and do some basic testing of how to bring it back online should things go pear shaped First, install MariaDB on all three nodes # apt-get install software-properties-common # apt-key adv –recv-keys –keyserver hkp:// 0xF1656F24C74CD1D8 # add-apt-repository “deb [arch=amd64,arm64,ppc64el] $(lsb_release -cs) main” # apt update […]

Changing hostname on Ubuntu 18.04

So we have finally started rolling out 18.04 VM’s for corporate use at work (R1soft finally started rolling ‘non-beta’ modules, which was our main blocker), occasionally I’ll go to run up a bunch of VM’s and munge the hostname of one machine.. With cloud-init, it’s not quite a simple as editing /etc/hostname and rebooting anymore.. […]