NAME¶

kdumpctl - control interface for kdump

SYNOPSIS¶

kdumpctl COMMAND

DESCRIPTION¶

kdumpctl is used to check or control the kdump service. In most cases, you should use systemctl to start / stop / enable kdump service instead. However, kdumpctl provides more details for debug and a helper to setup ssh key authentication.

COMMANDS¶

start

Start the service.

stop

Stop the service.

status

Prints the current status of kdump service. It returns non-zero value if kdump is not operational.

restart

Is equal to start; stop

reload

reload crash kernel image and initramfs without triggering a rebuild.

rebuild

rebuild the crash kernel initramfs.

propagate

Helps to setup key authentication for ssh storage since it's impossible to use password authentication during kdump.

showmem

Prints the size of reserved memory for crash kernel in megabytes.

estimate

Estimate a suitable crashkernel value for current machine. This is a best-effort estimate. It will print a recommanded crashkernel value based on current kdump setup, and list some details of memory usage.

SEE ALSO¶

kdump.conf(5), mkdumprd(8)