How to setup multiple MySQL in Droplet?
I try to install a MySQL 8 multiple instances in my Ubuntu 18.x droplet.
I configured my.cnf (mysqld groups) , made a second
mysqld2.sock, created a new datadir (/var/lib/mysql2 inkl. user und usergroup mysql and chmod 777) und try to start the instances.
mysqld_multi start 1
And then I try to start the second instance
mysqld_multi start 2
and I always will get the FATAL ERROR
“Tried to start mysqld under group [mysqld2],
but no data directory was found or could be created.
data directory used: /var/lib/mysql2”
and I don’t know why!!!!
Be aware - it’s MySQL 8 and
mysql_install_dbto install the mysql databases is deprecated! Instead I should use
mysqld --initializebut it won’t work as well.
These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.×