J'essaie de lancer 2 MySQL (une version 3.23 et une 4.1.21) avec mysqld_multi (cela semble être ce qu'il faut utiliser) mais rien ne se passe (aucun message, aucun log, aucun MySQL lancé) : /usr/local/mysql-4.1.21/bin/mysqld_multi --config-file=/etc/multi.cnf start 1 2
Mon /etc/multi.cnf :
[mysqld_multi]
mysqld = /usr/local/mysql4/bin/mysqld_safe
mysqladmin = /usr/local/mysql4/bin/mysqladmin
user = root
password = ***

[mysqld1]
pid-file=/var/run/mysqld/mysqld-3.23.pid
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql-3.23.sock
port=3306
user = mysql
err-log=/var/log/mysqld-3.23.log

[mysqld2]
pid-file=/var/run/mysqld/mysqld-4.1.21.pid
datadir=/usr/local/mysql-4.1.21/data
socket=/usr/local/mysql-4.1.21/mysql.sock
port=3307
user = mysql
err-log=/var/log/mysqld-4.1.21.log