Yesterday morning after a 6am! train to Leeds I took and passed my RHCSA exam which combined with my RHCE pass from December means that I am once again officially an RHCE. I have held 3 RHCE certificates originally passing way back in 2000 on Red Hat 6.1 (no not RHEL 6.1) and again in January 2005 on RHEL 3.0.
I’ve been playing with RedHat storage server which runs GlusterFS under the hood and cloned the nodes from a single master but got an error about “overlapping export directories from the same peer” when creating a new volume on GlusterFS.
Turns out if you have cloned the nodes then you need to make sure you have updated the UUID in /etc/glusterd/glusterd.info to actually be unique again.
Quick cheat is to do:
service glusterd stop echo "UUID=$(uuidgen)" > /etc/glusterd/glusterd.info service glusterd start