How to troubleshoot the automatic restart issue in CentOS 7?

8 months ago

Emily Johnson

2 minutes

To troubleshoot the cause of CentOS 7 automatically restarting, you can follow the steps outlined below:

Check system logs: Use the command “journalctl -b” to view system logs and look for any abnormalities or error messages, especially those around the time of reboot.
Check the system load: Use the command uptime to view the system’s load situation. If the load is too high, it may be due to insufficient system resources or a process consuming too many resources, leading to an automatic reboot.
Check for hardware issues: Verify if the system hardware is functioning properly, such as checking for faulty hard drives, memory problems, and ensuring that the fan is spinning correctly. You can use the command smartctl to check the health of the hard drive and the command memtest86+ to test the memory.
Check for system updates: Ensure that the system is equipped with the latest patches and updates to prevent automatic restarts caused by known issues or vulnerabilities.
Check hardware drivers: Verify if the hardware drivers being used by the system are up-to-date, especially those related to the system such as graphics cards, network cards, and sound cards. You can use the commands lspci and lsmod to check the currently loaded hardware drivers.
Check scheduled tasks: Verify if there are any scheduled tasks set for automatic restart in the system. You can use the command crontab -l to view the scheduled task configuration for the current user.
Check power supply issues: Verify if the power supply is stable, check for voltage fluctuations or power outages. You can use a power supply testing tool to test the stability of the power supply.

If the above steps do not reveal any issues, you can consider conducting a more detailed system debugging, such as using gdb to debug the crashing process or examining system core dump files to analyze the issue.

Please seek professional help if you are unsure how to perform the above operation to prevent further damage to the system.