What should I do if I get an error when stopping mysql on Linux?

Stop mysql error on Linux. The solutions are: 1. Check the error message and solve the problem according to the information prompts; 2. Check the log file to find the specific error that caused the stop failure and solve it; 3. Use the forced stop command , terminate all processes related to MySQL; 4. Use the kill command to manually kill the MySQL process; 5. Ensure that the permissions of MySQL-related files and directories are set correctly; 6. Try to restart the server to force stop the MySQL process.

The operating system of this tutorial: Linux5.18.14 system, Dell G3 computer.

If you encounter an error when stopping MySQL on Linux, you can try the following steps to solve the problem:

1. Check the error message: When you run the sudo systemctl stop mysql or sudo service mysql stop command , if an error is encountered, the system usually outputs a corresponding error message. Please check the error message for more information, which may help determine the cause of the problem.

2. View log files: MySQL usually records error and warning messages in log files. You can view the MySQL error log file, usually in the /var/log/mysql directory, such as error.log. By looking at the log file, you can find the specific error that caused the stop to fail.

3. Use the force stop command: If MySQL cannot stop normally, you can try to use the force stop command. First, open a terminal with administrator privileges and execute the following command:

 sudo systemctl stop mysql.service --kill

or

   sudo systemctl kill --kill-who=all mysql.service

This will forcefully terminate all MySQL-related processes.

4. Kill the process: If the forced stop command cannot stop MySQL normally, you can use the kill command to manually kill the MySQL process. First, find the PID of the MySQL process using the following command:

  ps aux | grep mysql

Then, kill the process using the following command (replace with the actual process ID):

  sudo kill <PID>

5. Check file permissions: Ensure that the permissions of MySQL-related files and directories are set correctly and that the MySQL process can read and write necessary files. Typically, the MySQL data directory is located at /var/lib/mysql. Make sure that the directory and its files are owned by the mysql user or mysql group and have the appropriate permissions.

6. Restart the server: If the above steps cannot solve the problem, you can try to restart the server to force stop the MySQL process. Please note that this will cause other running services on the server to be interrupted, so proceed with caution.

If the problem persists, please provide a more detailed error message or other contextual information for more specific analysis and assistance.

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