MariaDB 10 CentOS 7 moving datadir woes

Question

Brand new \"minimal\" install of CentOS 7 along with MariaDB 10. I have an additional mounted mirrored volume that I want to use for the datadir. Startup sequence is fine and co

Answer 1

Well that was interesting...

It turns out, that CentOS 7 "minimal" installs SELinux, which apparently was preventing mysql from writing to the mounted mirrored set. I was looking for security items that I might not have thought about and found it right there in the docs. I had previously thought (obviously erroneously) that SELinux was a distribution, not a module. Once I ran the test to see if it was there....

getenforce

I temporarily disabled it to test.

setenforce 0

Finally, I was able to start MariaDB with the directory in the mirrored set as the datadir and no errors. To make this change permanent (because this server is behind a firewall), in /etc/selinux/config, I made

- SELINUX=enforcing
+ SELINUX=disabled

I hope this helps someone else. Have a great day!