(mysql.info) multiple-windows-command-line-servers
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5.13.1.1 Starting Multiple Windows Servers at the Command Line
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To start multiple servers manually from the command line, you can
specify the appropriate options on the command line or in an option
file. It is more convenient to place the options in an option file, but
it is necessary to make sure that each server gets its own set of
options. To do this, create an option file for each server and tell the
server the filename with a -defaults-file option when you run it.
Suppose that you want to run `mysqld' on port 3307 with a data
directory of `C:\mydata1', and `mysqld-max' on port 3308 with a data
directory of `C:\mydata2'. (To do this, make sure that before you start
the servers, each data directory exists and has its own copy of the
`mysql' database that contains the grant tables.) Then create two
option files. For example, create one file named `C:\my-opts1.cnf' that
looks like this:
[mysqld]
datadir = C:/mydata1
port = 3307
Create a second file named `C:\my-opts2.cnf' that looks like this:
[mysqld]
datadir = C:/mydata2
port = 3308
Then start each server with its own option file:
C:\> C:\mysql\bin\mysqld --defaults-file=C:\my-opts1.cnf
C:\> C:\mysql\bin\mysqld-max --defaults-file=C:\my-opts2.cnf
On NT, each server starts in the foreground (no new prompt appears
until the server exits later), so you will need to issue those two
commands in separate console windows.
To shut down the servers, you must connect to each using the
appropriate port number:
C:\> C:\mysql\bin\mysqladmin --port=3307 shutdown
C:\> C:\mysql\bin\mysqladmin --port=3308 shutdown
Servers configured as just described allow clients to connect over
TCP/IP. If your version of Windows supports named pipes and you also
want to allow named-pipe connections, use the `mysqld-nt' or
`mysqld-max-nt' servers and specify options that enable the named pipe
and specify its name. Each server that supports named-pipe connections
must use a unique pipe name. For example, the `C:\my-opts1.cnf' file
might be written like this:
[mysqld]
datadir = C:/mydata1
port = 3307
enable-named-pipe
socket = mypipe1
Then start the server this way:
C:\> C:\mysql\bin\mysqld-nt --defaults-file=C:\my-opts1.cnf
Modify `C:\my-opts2.cnf' similarly for use by the second server.
A similar procedure applies for servers that you want to support
shared-memory connections. Enable such connections with the
-shared-memory option and specify a unique shared-memory name for each
server with the -shared-memory-base-name option.
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