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David Cao
David Cao

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4 ways to troubleshooting Linux server reboot issue

Last week, I received a report that one server had unexpectedly rebooted. This is a serious issue, as the server needs to be up and running at all times to support the business.

Upon investigation, I found that the server rebooted at around 9:10 AM, which was our business time. This means that the server was pretty busy at that time. But there were no error messages displayed before or after the reboot. I checked the system logs and find no indication of problems or issues that may have caused the reboot. I also checked the hardware and found no signs of failure or damage.

At this point, I was unsure of the cause of the reboot. I considered the possibility that it may have been caused by a software issue, such as a bug or an update that caused problems because we just released a new version of our app recently.

I decided to run a diagnostic tool to check for any software issues and also consider seeking help from our engineering team.

In the end, it turns out that the reboot was caused by a software issue, specifically a bug in the new release. we are able to apply a patch to fix the bug and prevent future reboots.

The server is now running smoothly and the business is able to continue operations without interruption.

  1. First, gather as much information as possible about the unexpected reboot. This may include the time when the server reboot, any error messages that were displayed before or after the reboot, and any other relevant details.

  2. Check the system logs for clues about the cause of the reboot. The kernel logs, system logs, and application logs may all contain useful information. Look for error messages or other indications of problems that may have led to the reboot.

  3. Check the hardware for any signs of failure. This may include checking the system's temperature, examining the system's power supply, and looking for any loose or damaged components.

  4. Check for any software issues that may have caused the reboot. This may include checking for updates or patches that may have been installed around the time of the reboot, or looking for any known bugs that may have caused the problem.

I copied these troubleshooting steps from here.

It's important to approach troubleshooting in a systematic way and to gather as much information as possible before attempting to fix the problem. This will help ensure that the root cause of the problem is identified and properly addressed.

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Timeless DEV post...

Git Concepts I Wish I Knew Years Ago

The most used technology by developers is not Javascript.

It's not Python or HTML.

It hardly even gets mentioned in interviews or listed as a pre-requisite for jobs.

I'm talking about Git and version control of course.

One does not simply learn git