VDS Server Kernel Panic Error Solution: Step-by-Step Guide

What is Kernel Panic?

Kernel panic is when the Linux kernel halts upon encountering an unexpected error. This typically occurs due to hardware incompatibilities, software bugs, or misconfigurations. In VDS servers, this issue can lead to significant access loss.

Causes of Kernel Panic

• Hardware Incompatibility: There may be incompatibility among hardware components.
• Software Issues: Faulty kernel modules or missing updates.
• Misconfigurations: Erroneous changes in /etc/sysctl.conf or /boot/grub/grub.cfg files.

Step-by-Step Solution

1. Restart the Server

First, restart the server and check the status. Connect via SSH:

ssh root@

2. Review Dump Information

To check the dump information during kernel panic:

sudo cat /var/log/kern.log | grep -i panic

This command displays logs related to the panic.

3. Check Kernel Modules

Check the compatibility of kernel modules:

lsmod

If a faulty module exists, unload it using:

sudo rmmod 

4. Review Configuration Files

Check configuration files:

sudo nano /etc/sysctl.conf

sudo nano /boot/grub/grub.cfg

Make changes if necessary and save.

5. Check for Updates

To check system updates:

sudo apt update && sudo apt upgrade

6. Install New Kernel

To install a new kernel:

sudo apt install linux-image-

7. Restart the Server

After changes, restart the server:

sudo reboot

Conclusion

Kernel panic errors can be resolved by following the appropriate steps. The steps outlined above will help you address this error in VDS servers. If problems persist, check hardware components and seek support if necessary.