2020-10-15 12:45:57 +00:00
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.TH KDUMPCTL 8 2015-07-13 kexec-tools
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.SH NAME
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kdumpctl \- control interface for kdump
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.SH SYNOPSIS
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.B kdumpctl
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.I COMMAND
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.SH DESCRIPTION
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.B kdumpctl
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is used to check or control the kdump service.
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In most cases, you should use
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.B systemctl
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to start / stop / enable kdump service instead. However,
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.B kdumpctl
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provides more details for debug and a helper to setup ssh key authentication.
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.SH COMMANDS
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.TP
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.I start
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Start the service.
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.TP
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.I stop
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Stop the service.
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.TP
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.I status
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Prints the current status of kdump service.
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It returns non-zero value if kdump is not operational.
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.TP
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.I restart
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Is equal to
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.I start; stop
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.TP
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.I reload
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reload crash kernel image and initramfs without triggering a rebuild.
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.TP
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.I rebuild
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rebuild the crash kernel initramfs.
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.TP
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.I propagate
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Helps to setup key authentication for ssh storage since it's
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impossible to use password authentication during kdump.
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.TP
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.I showmem
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Prints the size of reserved memory for crash kernel in megabytes.
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2021-04-21 19:27:10 +00:00
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.TP
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.I estimate
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Estimate a suitable crashkernel value for current machine. This is a
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best-effort estimate. It will print a recommanded crashkernel value
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based on current kdump setup, and list some details of memory usage.
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2020-10-15 12:45:57 +00:00
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.SH "SEE ALSO"
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.BR kdump.conf (5),
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.BR mkdumprd (8)
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