How to move database directory for mariadb

# Create new directory for MySQL data
mkdir /new/dir/for/mysql

# Set ownership of new directory to match existing one
chown --reference=/var/lib/mysql /new/dir/for/mysql

# Set permissions on new directory to match existing one
chmod --reference=/var/lib/mysql /new/dir/for/mysql

# Stop MySQL before copying over files
service mysql stop

# Copy all files in default directory, to new one, retaining perms (-p)
cp -rp /var/lib/mysql/* /new/dir/for/mysql/

https://stackoverflow.com/questions/1795176/how-to-change-mysql-data-directory