MySQL Instance Manager Configuration Files


MySQL Instance Manager has been deprecated and is removed in MySQL 5.5.

Instance Manager uses its standard configuration file unless it is started with a --defaults-file option that specifies a different file. On Windows, the standard file is my.ini in the directory where Instance Manager is installed. On Unix, the standard file is /etc/my.cnf.

Instance Manager reads options for itself from the [manager] section of the configuration file, and options for server instances from [mysqld] or [mysqldN] sections. The [manager] section contains any of the options listed in Section, “MySQL Instance Manager Command Options”, except for those specified as having to be given as the first option on the command line. Here is a sample [manager] section:

# MySQL Instance Manager options section
default-mysqld-path = /usr/local/mysql/libexec/mysqld
password-file = /home/cps/.mysqlmanager.passwd
monitoring-interval = 2
port = 1999
bind-address =

Each [mysqld] or [mysqldN] instance section specifies options given by Instance Manager to a server instance at startup. These are mainly common MySQL Server options (see Section 5.1.3, “Server Command Options”). In addition, a [mysqldN] section can contain the options in the following list, which are specific to Instance Manager. These options are interpreted by Instance Manager itself; it does not pass them to the server when it attempts to start that server.


The Instance Manager-specific options must not be used in a [mysqld] section. If a server is started without using Instance Manager, it will not recognize these options and will fail to start properly.

  • mysqld-path = file_name

    The path name of the mysqld server binary to use for the server instance.

  • nonguarded

    This option disables Instance Manager monitoring functionality for the server instance. By default, an instance is guarded: At Instance Manager start time, it starts the instance. It also monitors the instance status and attempts to restart it if it fails. At Instance Manager exit time, it stops the instance. None of these things happen for nonguarded instances.

  • shutdown-delay = seconds

    The number of seconds Instance Manager should wait for the server instance to shut down. The default value is 35 seconds. After the delay expires, Instance Manager assumes that the instance is hanging and attempts to terminate it. If you use InnoDB with large tables, you should increase this value.

Here are some sample instance sections:


mysqld-path= /home/cps/mysql/trees/mysql-5.1/sql/mysqld
socket     = /tmp/mysql.sock5
pid-file   = /tmp/hostname.pid5
datadir= /home/cps/mysql_data/data_dir1

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User Comments
  Posted by clive darra on September 6, 2007
here is a copy of our MYSQL.CNF

NOTE "_" seems to work as well as "-"

# cat /etc/my.cnf
long_query_time = 1
log_slow_queries = /var/log/mysql/mysql-slow.log

  Posted by Jacob Nikom on March 24, 2008
It is important to place only ONE parameter per line in the server configuration file. Although I could not find any formal limitations on the number of server parameters which could be placed on one line, multiple parameters caused errors for 5.1 version of MySQL server. Versions 4.0, 4.1 and 5.0 did not produced those errors.
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