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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.
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