MDEV-33852 start the server after deb installation

and fix installation of mysql.service on buster

followup for ec09c034

debian/mariadb-server.install

@@ -9,12 +9,12 @@ etc/logrotate.d/mariadb
 etc/security/user_map.conf
 lib/*/security/pam_user_map.so
 lib/systemd/system/mariadb@bootstrap.service.d/use_galera_new_cluster.conf
+lib/systemd/system/mariadb-extra@.socket
+lib/systemd/system/mariadb.service
+lib/systemd/system/mariadb@.service
+lib/systemd/system/mariadb@.socket
 lib/systemd/system/mysql.service
 lib/systemd/system/mysqld.service
-usr/share/mysql/systemd/mariadb-extra@.socket
-usr/share/mysql/systemd/mariadb.service
-usr/share/mysql/systemd/mariadb@.service
-usr/share/mysql/systemd/mariadb@.socket
 support-files/rpm/enable_encryption.preset etc/mysql/mariadb.conf.d/99-enable-encryption.cnf.preset
 usr/bin/aria_chk
 usr/bin/aria_dump_log

debian/not-installed

@@ -5,11 +5,7 @@ etc/mysql/mariadb.conf.d/enable_encryption.preset # Debian packaging uses files
 etc/mysql/mariadb.conf.d/mysql-clients.cnf # Debian packaging uses files from debian/additions/mariadb.cnf.d/
 etc/mysql/mariadb.conf.d/server.cnf # Debian packaging uses files from debian/additions/mariadb.cnf.d/
 lib/systemd/system/mariadb-extra.socket # Installed by rules file
-lib/systemd/system/mariadb-extra@.socket # Installed by rules file
-lib/systemd/system/mariadb.service # Installed by rules file
 lib/systemd/system/mariadb.socket # Installed by rules file
-lib/systemd/system/mariadb@.service # Installed by rules file
-lib/systemd/system/mariadb@.socket # Installed by rules file
 usr/bin/mariadb-embedded # Shipping the embedded server in distro packaging does not make sense
 usr/bin/mysql_config # Debian packaging has mysql_config as symlink to mariadb_config
 usr/bin/mysql_embedded # Symlink to mariadb-embedded which is intentionally not included
@@ -64,6 +60,10 @@ usr/share/mysql/policy/selinux/README # In MariaDB we don't want to use SELinux
 usr/share/mysql/policy/selinux/mariadb-server.fc # In MariaDB we don't want to use SELinux at the moment
 usr/share/mysql/policy/selinux/mariadb-server.te # In MariaDB we don't want to use SELinux at the moment
 usr/share/mysql/policy/selinux/mariadb.te # In MariaDB we don't want to use SELinux at the moment
+usr/share/mysql/systemd/mariadb-extra@.socket # Installed by rules file
+usr/share/mysql/systemd/mariadb.service # Installed by rules file
+usr/share/mysql/systemd/mariadb@.service # Installed by rules file
+usr/share/mysql/systemd/mariadb@.socket # Installed by rules file
 usr/share/mysql/systemd/mysql.service  # Installed by rules file
 usr/share/mysql/systemd/mysqld.service  # Installed by rules file
 usr/share/mysql/systemd/use_galera_new_cluster.conf

debian/rules

@@ -179,7 +179,7 @@ override_dh_installsystemd:
 # Start MariaDB at sequence number 19 before 20 where apache, proftpd etc gets
 # started which might depend on a running database server.
 override_dh_installinit-arch:
-	dh_installinit --name=mariadb --no-start -- defaults 19 21
+	dh_installinit --name=mariadb -- defaults 19 21
 	dh_systemd_start --restart-after-upgrade
 
 # Use custom server version string variable