If mariadb-service-convert is run and the user variable is unset then
this sets `User=` in `[Service]`, which then tries to run mariadb as
root, which in-turn fails. This only happens when mysqld_safe is missing
which is all the time now. So don't set `User=` if there is no user variable.
Reviewer: Sergei Golubchik <serg@mariadb.org> (in PR #2382)
* mariadb-service-convert to use mariadbd-safe
* galera_recovery to use mariadbd
* mtr - wsrep use mariadb executables
* debian/mariadb-server.mariadb.init use mariadbd-safe
* debian/tests/smoke uses mariadb instead of mysql as client.
Co-Author: Daniel Black <daniel@mariadb.org>
Systemd config files need absolute paths.
LimitCore was ment to be LimitCORE
Oct 14 07:28:04 spaceman systemd[1]: [/etc/systemd/system/mariadb.service.d/migrated-from-my.cnf-settings.conf:7] Unknown lvalue 'LimitCore' in section 'Service'
Oct 14 07:28:04 spaceman systemd[1]: [/etc/systemd/system/mariadb.service.d/migrated-from-my.cnf-settings.conf:9] Executable path is not absolute, ignoring: sync
Oct 14 07:28:04 spaceman systemd[1]: [/etc/systemd/system/mariadb.service.d/migrated-from-my.cnf-settings.conf:10] Executable path is not absolute, ignoring: sysctl -q -w vm.drop_caches=3
During the review process OPTIONS was converted to MYSQLD_OPTS.
In the script mariadb-service convert, the ExecStart of the system
also uses this setting.
