Starting from 10.1.39, pre-uninstall scriplet disables mariadb service. But if later the server is reinstalled/upgraded, the post-install service doesn't always enable the service, so it stays disabled.
As a side-effect, mysql alias of the service doesn't work after upgrade, and mysqld alias is not even recognized:
[buildbot@centos73-amd64 ~]$ systemctl status mysql --no-pager
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● mysql.service - LSB: start and stop MariaDB
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Loaded: loaded (/etc/rc.d/init.d/mysql; bad; vendor preset: disabled)
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Active: inactive (dead)
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Docs: man:systemd-sysv-generator(8)
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[buildbot@centos73-amd64 ~]$ systemctl status mysqld --no-pager
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Unit mysqld.service could not be found.
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[buildbot@centos73-amd64 ~]$ sudo systemctl enable mariadb
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Created symlink from /etc/systemd/system/mysql.service to /usr/lib/systemd/system/mariadb.service.
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Created symlink from /etc/systemd/system/mysqld.service to /usr/lib/systemd/system/mariadb.service.
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Created symlink from /etc/systemd/system/multi-user.target.wants/mariadb.service to /usr/lib/systemd/system/mariadb.service.
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[buildbot@centos73-amd64 ~]$ systemctl status mysqld --no-pager
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● mariadb.service - MariaDB 10.3.15 database server
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Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled)
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Drop-In: /etc/systemd/system/mariadb.service.d
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└─migrated-from-my.cnf-settings.conf, tokudb.conf
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Active: active (running) since Thu 2019-05-09 21:59:30 UTC; 1h 27min ago
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Docs: man:mysqld(8)
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https://mariadb.com/kb/en/library/systemd/
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Main PID: 3027 (mysqld)
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Status: "Taking your SQL requests now..."
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CGroup: /system.slice/mariadb.service
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└─3027 /usr/sbin/mysqld
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [ERROR] mysqld: Server GSSAPI error (major 85...mpty.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [ERROR] Plugin 'gssapi' init function returned error.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [Note] Server socket created on IP: '::'.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [ERROR] Incorrect definition of table mysql.e...'POST
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [ERROR] mysqld: Event Scheduler: An error occ...uler.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [Note] Reading of all Master_info entries succeded
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [Note] Added new Master_info '' to hash table
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [Note] /usr/sbin/mysqld: ready for connections.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: Version: '10.3.15-MariaDB' socket: '/var/lib/mysql/mysql.sock' po...erver
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May 09 21:59:30 centos73-amd64 systemd[1]: Started MariaDB 10.3.15 database server.
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Hint: Some lines were ellipsized, use -l to show in full.
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[buildbot@centos73-amd64 ~]$
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[buildbot@centos73-amd64 ~]$ systemctl status mysql --no-pager
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● mariadb.service - MariaDB 10.3.15 database server
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Loaded: loaded (/usr/lib/systemd/system/mariadb.service; enabled; vendor preset: disabled)
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Drop-In: /etc/systemd/system/mariadb.service.d
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└─migrated-from-my.cnf-settings.conf, tokudb.conf
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Active: active (running) since Thu 2019-05-09 21:59:30 UTC; 1h 29min ago
|
Docs: man:mysqld(8)
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https://mariadb.com/kb/en/library/systemd/
|
Main PID: 3027 (mysqld)
|
Status: "Taking your SQL requests now..."
|
CGroup: /system.slice/mariadb.service
|
└─3027 /usr/sbin/mysqld
|
|
May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [ERROR] mysqld: Server GSSAPI error (major 85...mpty.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [ERROR] Plugin 'gssapi' init function returned error.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [Note] Server socket created on IP: '::'.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [ERROR] Incorrect definition of table mysql.e...'POST
|
May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [ERROR] mysqld: Event Scheduler: An error occ...uler.
|
May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [Note] Reading of all Master_info entries succeded
|
May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [Note] Added new Master_info '' to hash table
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May 09 21:59:30 centos73-amd64 mysqld[3027]: 2019-05-09 21:59:30 0 [Note] /usr/sbin/mysqld: ready for connections.
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May 09 21:59:30 centos73-amd64 mysqld[3027]: Version: '10.3.15-MariaDB' socket: '/var/lib/mysql/mysql.sock' po...erver
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May 09 21:59:30 centos73-amd64 systemd[1]: Started MariaDB 10.3.15 database server.
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Hint: Some lines were ellipsized, use -l to show in full.
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Important note: In order to avoid failures with mysql alias, we will explicitly re-enable the service before using the alias in RPM upgrade tests. It needs to be re-visited after the problem is fixed one or another way.
- causes
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MDEV-21793
The mariadb.service unit not enabled after MDB set up (enabled commands to start at boot)
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-
Confirmed
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Major
Fedora recommends to use special macros to deal with systemd: https://docs.fedoraproject.org/en-US/packaging-guidelines/Scriptlets/
I doubt we can use them, as we build not only on Fedora. But that's what these macros do on FC29:
/usr/lib/rpm/macros.d/macros.systemd
%systemd_post() \if [ $1 -eq 1 ] ; then \# Initial installation \systemctl --no-reload preset %{?*} &>/dev/null || : \fi \%{nil}%systemd_preun() \if [ $1 -eq 0 ] ; then \# Package removal, not upgrade \systemctl --no-reload disable --now %{?*} &>/dev/null || : \fi \%{nil}%systemd_postun() %{nil}%systemd_postun_with_restart() \if [ $1 -ge 1 ] ; then \# Package upgrade, not uninstall \systemctl try-restart %{?*} &>/dev/null || : \fi \%{nil}Note that pre-uninstall indeed disables the service. But post-install does preset which enables it again.
I'm leaning towards doing the same, trusting Fedora on this.
Any thoughts? axel? danblack?