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Filename : live-image-kdump-howto.txt

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Kdump now works on live images with some manual configurations. Here is the step
by step guide.

1. Enable crashkernel reservation

Since there isn't any config file that can be used to configure kernel
parameters for live images before booting them, we have to append 'crashkernel'
argument in boot menu every time we boot a live image.

2. Change dump target in /etc/kdump.conf

When kdump kernel boots in a live environment, the default target /var/crash is
in RAM so you need to change the dump target to an external disk or a network
dump target.

Besides, make sure that "default dump_to_rootfs" is not specified.

3. Start kdump service

    $ kdumpctl start

4. Trigger a kdump test

    $ echo 1 > /proc/sys/kernel/sysrq
    $ echo c > /proc/sysrq-trigger

Name	Size	Last Modified	Owner	Permissions
News	2.744 KB	November 18 2022 3:11:40	root	0644
TODO	0.516 KB	November 18 2022 3:11:40	root	0644
early-kdump-howto.txt	3.524 KB	September 24 2024 8:35:41	root	0644
fadump-howto.txt	15.028 KB	September 24 2024 8:35:41	root	0644
kdump-in-cluster-environment.txt	3.735 KB	September 24 2024 8:35:41	root	0644
kexec-kdump-howto.txt	42.335 KB	September 24 2024 8:35:41	root	0644
live-image-kdump-howto.txt	0.747 KB	September 24 2024 8:35:41	root	0644
supported-kdump-targets.txt	4.089 KB	September 24 2024 8:35:41	root	0644

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