On Windows, a MySQL server can run as a Windows service. The procedures for installing, controlling, and removing a single MySQL service are described in Section 126.96.36.199, “Starting MySQL as a Windows Service”.
To set up multiple MySQL services, you must make sure that each instance uses a different service name in addition to the other parameters that must be unique per instance.
For the following instructions, suppose that you want to run the
mysqld server from two different versions of
MySQL that are installed at
respectively. (This might be the case if you are running 5.5.9
as your production server, but also want to conduct tests using
To install MySQL as a Windows service, use the
option. For information about these options, see
Section 188.8.131.52, “Starting MySQL as a Windows Service”.
Based on the preceding information, you have several ways to set up multiple services. The following instructions describe some examples. Before trying any of them, shut down and remove any existing MySQL services.
Approach 1: Specify the options for all services in one of the standard option files. To do this, use a different service name for each server. Suppose that you want to run the 5.5.9 mysqld using the service name of
mysqld1and the 8.0.19 mysqld using the service name
mysqld2. In this case, you can use the
[mysqld1]group for 5.5.9 and the
[mysqld2]group for 8.0.19. For example, you can set up
# options for mysqld1 service [mysqld1] basedir = C:/mysql-5.5.9 port = 3307 enable-named-pipe socket = mypipe1 # options for mysqld2 service [mysqld2] basedir = C:/mysql-8.0.19 port = 3308 enable-named-pipe socket = mypipe2
Install the services as follows, using the full server path names to ensure that Windows registers the correct executable program for each service:
C:\> C:\mysql-5.5.9\bin\mysqld --install mysqld1 C:\> C:\mysql-8.0.19\bin\mysqld --install mysqld2
To start the services, use the services manager, or NET START or SC START with the appropriate service names:
C:\> SC START mysqld1 C:\> SC START mysqld2
To stop the services, use the services manager, or use NET STOP or SC STOP with the appropriate service names:
C:\> SC STOP mysqld1 C:\> SC STOP mysqld2
Approach 2: Specify options for each server in separate files and use
--defaults-filewhen you install the services to tell each server what file to use. In this case, each file should list options using a
With this approach, to specify options for the 5.5.9 mysqld, create a file
C:\my-opts1.cnfthat looks like this:
[mysqld] basedir = C:/mysql-5.5.9 port = 3307 enable-named-pipe socket = mypipe1
For the 8.0.19 mysqld, create a file
C:\my-opts2.cnfthat looks like this:
[mysqld] basedir = C:/mysql-8.0.19 port = 3308 enable-named-pipe socket = mypipe2
Install the services as follows (enter each command on a single line):
C:\> C:\mysql-5.5.9\bin\mysqld --install mysqld1 --defaults-file=C:\my-opts1.cnf C:\> C:\mysql-8.0.19\bin\mysqld --install mysqld2 --defaults-file=C:\my-opts2.cnf
When you install a MySQL server as a service and use a
--defaults-fileoption, the service name must precede the option.
After installing the services, start and stop them the same way as in the preceding example.
To remove multiple services, use SC DELETE
each one. Alternatively, use mysqld --remove
for each one, specifying a service name following the
--remove option. If the service
name is the default (
MySQL), you can omit it
when using mysqld --remove.