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23.2.4. Testing the Configuration

Be careful when using these commands

The commands below will cause the kernel to crash. Use caution when following these steps, and by no means use them on a production machine.
To test the configuration, reboot the system with kdump enabled, and make sure that the service is running (refer to Section 8.2, “Running Services” for more information on how to run a service in Fedora):
systemctl is-active kdump.service
Then type the following commands at a shell prompt:
echo 1 > /proc/sys/kernel/sysrq
echo c > /proc/sysrq-trigger
This will force the Linux kernel to crash, and the address-YYYY-MM-DD-HH:MM:SS/vmcore file will be copied to the location you have selected in the configuration (that is, to /var/crash/ by default).