Nanni, Thanks for the advices. How to make an installation? I use Fedora Core 8 where MySQL comes with the bundle. Do you think I should download the source code and compile it and configure it using ./configure?
I did changed the cnf file to have 2 different configurations: [EMAIL PROTECTED] mysqld]# cat /etc/my1.cnf [mysqld] port=33061 datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql # Default to using old password format for compatibility with mysql 3.x # clients (those using the mysqlclient10 compatibility package). old_passwords=1 [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid [EMAIL PROTECTED] mysqld]# cat /etc/my2.cnf [mysqld] port=33602 datadir=/var/lib/mysql socket=/var/lib/mysql/mysql2.sock user=mysql # Default to using old password format for compatibility with mysql 3.x # clients (those using the mysqlclient10 compatibility package). old_passwords=1 [mysqld_safe] log-error=/var/log/mysqld2.log pid-file=/var/run/mysqld/mysqld2.pid And then I started (or, I believe I started) 2 difference instances with: [EMAIL PROTECTED] etc]# mysqld_safe --defaults-file=/etc/my1.cnf & [EMAIL PROTECTED] etc]# mysqld_safe --defaults-file=/etc/my2.cnf & I checked the service status: [EMAIL PROTECTED] mysqld]# service mysqld status mysqld (pid 3542 3403) is running... Does it means I have two instances running? If I want to configure them seperately using mysql command, what shall I do to distinguish each instances? Thanks, Jing Zhang Nanni Claudio wrote: > > 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] > > > -- View this message in context: http://www.nabble.com/Multiple-instances-howto-tp16338723p16374504.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]
