Hi Jing, Logically speaking, you can run as many instances of mysql as you want, but you have to make an installation for each mysql instance. On each instance you can have as many databases as you want. From my experience here is the key:
1) One different mysql user (mysql41,mysql50) for each mysql installation. 2) put .my.cnf file in the home directory of each mysql user with the right parameters. This is the way I have found not to conflict between instances. The socket file is a file name you have to assign to each instance, Use a different name for each instance. :-----.my.cnf------------: # The MySQL server [mysqld] port = 3515 socket = /tmp/mysql5015.sock skip-locking key_buffer = 256M max_allowed_packet = 1M :-------------------------: 3) Of course each mysql instance must bind to a different port(3306,3316,3326) Let me know. Aloha! Claudio Nanni -----Messaggio originale----- Da: toutiao [mailto:[EMAIL PROTECTED] Inviato: venerdì 28 marzo 2008 3.03 A: mysql@lists.mysql.com Oggetto: Re: Multiple instances howto In addition, can you run multiple instances of mysqld simultaneous? toutiao wrote: > > > Dear Friends, > > I'm learning to create multiple mysqld instances on Linux, where one > instance of mysql is already running. > > While creating a new my.cnf file, I noticed that I need to assign a socket > file to it. > > Can you pls. tell me how to create / test this socket file? > > Thanks, > Jing Zhang > > -- View this message in context: http://www.nabble.com/Multiple-instances-howto-tp16338723p16344323.html Sent from the MySQL - General mailing list archive at Nabble.com. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] "Questo messaggio ed ogni suo allegato sono confidenziali e possono essere riservati o, comunque, protetti dall'essere diffusi. Se il ricevente non é il destinatario diretto del presente messaggio, é pregato di contattare l'originario mittente e di cancellare questo messaggio ed ogni suo allegato dal sistema di posta. Se il ricevente non é il destinatario diretto del presente messaggio, sono vietati l'uso, la riproduzione e la stampa di questo messaggio e di ogni suo allegato, nonché la diffusione del loro contenuto a qualsiasi altro soggetto" ***** "This message and any attachment are confidential and may be privileged or otherwise protected from disclosure. If you are not the intended recipient, please contact the sender and delete this message and any attachment from your system. If you are not the intended recipient you must not use, copy or print this message or attachment or disclose the contents to any other person." -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
