How to change MariaDB's data directory? - centos

Question

I use CentOS7 as my system
I tried to change the data direction on MariaDB 10.1.43
I follow the process on internet and all show to change the datadir=/var/lib/mysql/ in my.cnf
but the problem is there is no my.cnf file in my computer
only a my.cnf.d folder with a server.cnf file in it
I type datadir=/newpath/ in this server.cnf
but it didn't work, the datadir that mariaDB shows is still /var/lib/mysql/
what should I do for now? how can I find this my.cnf file?

Answer 1

I realize this is an old question. But wanted to add an answer that worked for me on a legacy machine running MariaDB 10.1.43 and CentOS 6.
Within the /etc/my.cnf file add this under [client-server] to look like this:
[client-server]
port=3306
socket=/home/mysql/mysql.sock
Then, within the /etc/my.cnf.d folder in the server.cnf file add this under [mysqld] to look like this:
[mysqld]
datadir=/home/mysql
socket=/home/mysql/mysql.sock
I moved the data to the /home directory, which is a newly mounted volume with additional space for this machine.
The next part of my answer is out of scope for this question. But the instructions here worked like a charm for moving your MySQL/MariaDB data directory. Semi-pro tip: Be sure to follow the RedHat/CentOS step to add the security context.