KDUMPCTL(8)

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)