update

plugins/mysql-apt/init.d/mysql8.4.service.tpl

@@ -35,7 +35,6 @@ WantedBy=multi-user.target
 User=mysql
 Group=mysql
 Type=notify
-#ExecStartPre=+/usr/share/mysql-8.0/mysql-systemd-start pre
 ExecStart={$SERVER_PATH}/mysql-apt/bin/usr/sbin/mysqld --defaults-file={$SERVER_PATH}/mysql-apt/etc/my.cnf
 TimeoutSec=0
 LimitNOFILE = 10000

plugins/mysql-apt/init.d/mysql9.0.service.tpl

@@ -0,0 +1,50 @@
+# Copyright (c) 2015, 2022, Oracle and/or its affiliates.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License, version 2.0,
+# as published by the Free Software Foundation.
+#
+# This program is also distributed with certain software (including
+# but not limited to OpenSSL) that is licensed under separate terms,
+# as designated in a particular file or component or in included license
+# documentation.  The authors of MySQL hereby grant you an additional
+# permission to link the program and your derivative works with the
+# separately licensed software that they have included with MySQL.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License, version 2.0, for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
+
+# MySQL systemd service file
+
+[Unit]
+Description=MySQL Community Server
+Documentation=man:mysqld(8)
+Documentation=http://dev.mysql.com/doc/refman/en/using-systemd.html
+After=network.target
+
+[Install]
+WantedBy=multi-user.target
+
+[Service]
+User=mysql
+Group=mysql
+Type=notify
+#ExecStartPre=+/usr/share/mysql-8.0/mysql-systemd-start pre
+ExecStart={$SERVER_PATH}/mysql-apt/bin/usr/sbin/mysqld --defaults-file={$SERVER_PATH}/mysql-apt/etc/my.cnf
+TimeoutSec=0
+LimitNOFILE = 10000
+Restart=on-failure
+RestartPreventExitStatus=1
+
+# Always restart when mysqld exits with exit code of 16. This special exit code
+# is used by mysqld for RESTART SQL.
+RestartForceExitStatus=16
+
+# Set enviroment variable MYSQLD_PARENT_PID. This is required for restart.
+Environment=MYSQLD_PARENT_PID=1