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Document systemd service changes 

Prefer the systemctl edit mysql.service syntax
and leave the more complex alternatives to the
existing documents referenced.

Also show how to use the multiinstance a bit more.

Cherry-picked from Fedora: a87e9e5d9a?branch=rawhide
Related: #1971248
This commit is contained in:
Daniel Black 2021-04-22 12:08:08 +10:00 committed by Michal Schorm
parent 72944367e0
commit 8db0f6ac1a
2 changed files with 39 additions and 40 deletions
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28
mysql.service.in
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@ -1,28 +1,20 @@
# It's not recommended to modify this file in-place, because it will be
# overwritten during package upgrades. If you want to customize, the
# best way is to create a file "/etc/systemd/system/@DAEMON_NAME@.service",
# containing
# .include /usr/lib/systemd/system/@DAEMON_NAME@.service
# ...make your changes here...
# or create a file "/etc/systemd/system/@DAEMON_NAME@.service.d/foo.conf",
# which doesn't need to include ".include" call and which will be parsed
# after the file @DAEMON_NAME@.service itself is parsed.
# best way is to:
#
# root> systemctl edit @DAEMON_NAME@.service
#
# Then add additonal directives under a section (probably [Service]).
#
# For more info about custom unit files, see systemd.unit(5) or
# http://fedoraproject.org/wiki/Systemd#How_do_I_customize_a_unit_file.2F_add_a_custom_unit_file.3F
# For example, if you want to increase mysql's open-files-limit to 10000,
# you need to increase systemd's LimitNOFILE setting, so create a file named
# "/etc/systemd/system/@DAEMON_NAME@.service.d/limits.conf" containing:
#
# For example, if you want to increase MariaDB's open-files-limit to 10000,
# you need to increase systemd's LimitNOFILE setting, use the contents below:
#
# [Service]
# LimitNOFILE=10000
# Note: /usr/lib/... is recommended in the .include line though /lib/...
# still works.
# Don't forget to reload systemd daemon after you change unit configuration:
# root> systemctl --system daemon-reload
# Use [mysqld.INSTANCENAME] as sections in my.cnf to configure this instance.
#
[Unit]
Description=@NICE_PROJECT_NAME@ @MAJOR_VERSION@.@MINOR_VERSION@ database server

51
mysql@.service.in
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@ -1,36 +1,43 @@
# Multi instance version of mariadb. For if you run mutiple verions at once.
# Multi instance version of MariaDB. For if you run mutiple verions at once.
# Also used for @DAEMON_NAME@@bootstrap to bootstrap Galera.
#
# To use multi instance variant, use [mysqld.INSTANCENAME] as sections in my.cnf
# To use multi instance variant, use [mariadbd.INSTANCENAME] as sections in
# @sysconfdir@/@my.cnf to change per instance settings. A minimumal necessary
# configuration items to change to avoid conflicts between instances is:
#
# [mariadbd.instancename]
# # TCP port to make available for clients
# port=3306
# # Socket to make available for clients
# socket=/tmp/mariadb-instancename.sock
# # Where MariaDB should store all its data
# datadir=/usr/local/mariadb-instancename/data
#
# and start the service via:
# systemctl start @DAEMON_NAME@@{instancename}.server
#
# root> systemctl start @DAEMON_NAME@@{instancename}.server
#
# It's not recommended to modify this file in-place, because it will be
# overwritten during package upgrades. If you want to customize, the
# best way is to create a file "/etc/systemd/system/@DAEMON_NAME@.service",
# containing
# .include /usr/lib/systemd/system/@DAEMON_NAME@.service
# ...make your changes here...
# or create a file "/etc/systemd/system/@DAEMON_NAME@.service.d/foo.conf",
# which doesn't need to include ".include" call and which will be parsed
# after the file @DAEMON_NAME@.service itself is parsed.
# overwritten during package upgrades. If you want to customize, for
# all instances, the best way is:
#
# root> systemctl edit @DAEMON_NAME@@.service
#
# Then add additonal directives under a section (probably [Service]).
#
# If you only want to change a specific instance:
#
# root> systemctl edit @DAEMON_NAME@@{instancename}.server
#
# For more info about custom unit files, see systemd.unit(5) or
# http://fedoraproject.org/wiki/Systemd#How_do_I_customize_a_unit_file.2F_add_a_custom_unit_file.3F
# For example, if you want to increase mysql's open-files-limit to 10000,
# you need to increase systemd's LimitNOFILE setting, so create a file named
# "/etc/systemd/system/@DAEMON_NAME@.service.d/limits.conf" containing:
#
# For example, if you want to increase MariaDB's open-files-limit to 10000,
# you need to increase systemd's LimitNOFILE setting, use the contents below:
#
# [Service]
# LimitNOFILE=10000
# Note: /usr/lib/... is recommended in the .include line though /lib/...
# still works.
# Don't forget to reload systemd daemon after you change unit configuration:
# root> systemctl --system daemon-reload
# Use [mysqld.INSTANCENAME] as sections in my.cnf to configure this instance.
[Unit]
Description=@NICE_PROJECT_NAME@ @MAJOR_VERSION@.@MINOR_VERSION@ database server
Documentation=man:mariadbd(8)