wangmingzhiJohn commented on issue #5729:
URL: 
https://github.com/apache/dolphinscheduler/issues/5729#issuecomment-871870692


   More information, I am concerned about the mysql status, cause below:
   ```
   wangmingzhi@xxx:~/apache-dolphinscheduler-1.3.6-bin2$ systemctl status mysqld
   ● mysqld.service
      Loaded: not-found (Reason: No such file or directory)
      Active: inactive (dead)
   wangmingzhi@xxx:~/apache-dolphinscheduler-1.3.6-bin2$ systemctl status mysql
   ● mysql.service - MySQL Community Server
      Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor 
preset: enabled)
      Active: active (running) since Mon 2021-06-07 10:20:31 CST; 3 weeks 3 
days ago
    Main PID: 43105 (mysqld)
       Tasks: 32
      Memory: 156.1M
         CPU: 4min 18.896s
      CGroup: /system.slice/mysql.service
              └─43105 /usr/sbin/mysqld
   ```
   It seems that mysqld is not available, but I can login in mysql and query 
about the database:
   ```
   wangmingzhi@xxx:~/apache-dolphinscheduler-1.3.6-bin2$ mysql -uds_user 
-pdolphinscheduler              
   mysql: [Warning] Using a password on the command line interface can be 
insecure.
   Welcome to the MySQL monitor.  Commands end with ; or \g.
   Your MySQL connection id is 114
   Server version: 5.7.33-0ubuntu0.16.04.1 (Ubuntu)
   
   Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
   
   Oracle is a registered trademark of Oracle Corporation and/or its
   affiliates. Other names may be trademarks of their respective
   owners.
   
   Type 'help;' or '\h' for help. Type '\c' to clear the current input 
statement.
   
   mysql> show databases;
   +--------------------+
   | Database           |
   +--------------------+
   | information_schema |
   | dolphinscheduler   |
   +--------------------+
   2 rows in set (0.00 sec)
   
   mysql> use dolphinscheduler;
   Database changed
   mysql> 
   ```


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