Linux: Disable Kdump

To disable Kdump, follow these steps:

1. Disable the kdump service:

# systemctl disable --now kdump.service

2. Check that the kdump service is inactive:

# systemctl status kdump.service

3. Remove kexec-tools package

# rpm -e kexec-tools 

4. (Optional) Remove the crashkernel command-line parameter from the current kernel by running the following command:

# grubby --remove-args="crashkernel" --update-kernel=/boot/vmlinuz-$(uname -r)

Or set the desired value using grubby --update-kernel=/boot/vmlinuz-$(uname -r) --args="crashkernel=....” (Instead of dots, indicate your value).

ℹ️ One possible error that may occur when removing the kexec-tools package is that it might indicate that the package is not installed, even though it actually is. In this case, you can try rebuilding the RPM database and then rerunning the erase command.

# rpm --rebuilddb
# rpm -e kexec-tools