08-07-2015
How would you propose to boot the HMC anyway? You can define partitions to be auto-boot at power on, however I think that requires the chassis to be powered on from the HMC.
I agree with agent.kgb that it is not good practice anyway. If your servers are so critical, it is far better to have good procedures and a 24-hour operations team.
Doing things because it seems easy might not be the right way to do it. Surely your servers have some dependencies that might need to be confirmed anyway after a power loss and you may have filesystems and/or database to check over to ensure they have recovered.
Robin
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LEARN ABOUT CENTOS
grub-mkrescue
GRUB-MKRESCUE(1) User Commands GRUB-MKRESCUE(1)
NAME
grub-mkrescue - make a GRUB rescue image
SYNOPSIS
grub-mkrescue [OPTION...] [OPTION] SOURCE...
DESCRIPTION
Make GRUB CD-ROM, disk, pendrive and floppy bootable image.
--compress=no|xz|gz|lzo
compress GRUB files [optional]
-d, --directory=DIR
use images and modules under DIR [default=/usr/lib/grub/<platform>]
--fonts=FONTS
install FONTS [default=unicode]
--install-modules=MODULES
install only MODULES and their dependencies [default=all]
-k, --pubkey=FILE
embed FILE as public key for signature checking
--locale-directory=DIR use translations under DIR
[default=/usr/share/locale]
--locales=LOCALES
install only LOCALES [default=all]
--modules=MODULES
pre-load specified modules MODULES
--themes=THEMES
install THEMES [default=starfield]
-v, --verbose
print verbose messages.
--arcs-boot
enable ARCS (big-endian mips machines, mostly SGI) boot. Disables HFS+, APM, sparc64 and boot as disk image for i386-pc
--core-compress=xz|none|auto
choose the compression to use for core image
--label-bgcolor=COLOR
use COLOR for label background
--label-color=COLOR
use COLOR for label
--label-font=FILE
use FILE as font for label
-o, --output=FILE
save output in FILE [required]
--product-name=STRING
use STRING as product name
--product-version=STRING
use STRING as product version
--rom-directory=DIR
save ROM images in DIR [optional]
--sparc-boot
enable sparc boot. Disables HFS+, APM, ARCS and boot as disk image for i386-pc
--xorriso=FILE
use FILE as xorriso [optional]
-?, --help
give this help list
--usage
give a short usage message
-V, --version
print program version
Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.
Generates a bootable CD/USB/floppy image. Arguments other than options to this program are passed to xorriso, and indicate source files,
source directories, or any of the mkisofs options listed by the output of `xorriso -as mkisofs -help'.
Option -- switches to native xorriso command mode.
Mail xorriso support requests to <bug-xorriso@gnu.org>.
REPORTING BUGS
Report bugs to <bug-grub@gnu.org>.
SEE ALSO
grub-mkimage(1)
The full documentation for grub-mkrescue is maintained as a Texinfo manual. If the info and grub-mkrescue programs are properly installed
at your site, the command
info grub-mkrescue
should give you access to the complete manual.
grub-mkrescue (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-MKRESCUE(1)