How to create a bootable ISO from running Linux box? Post: 302713707

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Operating Systems Linux Red Hat How to create a bootable ISO from running Linux box? Post 302713707 by rbatte1 on Thursday 11th of October 2012 06:21:22 AM

10-11-2012

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I think what you are looking for is something comparable to the AIX mksysb, the HP-UX Ignite tape make_recovery etc. so that you can clone / DR your server without having a Kickstart/Jumpstart (Solaris)/NIM (AIX) server that you would have to build first.

From what I have seen so far, there is no easy process, but when running Solaris many years ago, we had to do a set of filesystem saves. Our recovery process was a bit convoluted, but was basically:-

Boot the new server to single user from install CD
Slice the target boot disk according to our documentation
Restore the filesystems to the correct slices with ufsrestore
Delete and re-create the device mappings (can't remember how now)
Remove the encrypted password for root
Unmount all restored filesystems and boot.

I'm informed that I will have to build and manage Red Hat servers in future, so I too am after a sensible process to follow, but at worst I will probably end up doing something like the above, but that relies on documentation to be kept up to date and can get messey.

Our aim has always been to just put back a base operating system, but our operating system not just a plain install. We then would rebuild the volume groups definitions (AIX saveg/restvg excluding all files) we saved into the root filesystem before the DR backup was taken and then used the 3rd party backup tool to put back the data to the non-system filesystems and databases.

I hope that this helps that someone else can make some suggestions.

Robin
Liverpool/Blackburn
UK

rbatte1

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LEARN ABOUT OPENSOLARIS

mkcd

mkcd(1M)						  System Administration Commands						  mkcd(1M)

NAME

       mkcd - create bootable Solaris ISO image

SYNOPSIS

       /usr/bin/mkcd -v [-l label] media-root iso

DESCRIPTION

       The  mkcd  utility takes media-root (the root of an on-disk Solaris install media) as input and creates a bootable Solaris ISO image in the
       file iso, using mkisofs(8). The file can then be burned onto a CD/DVD with utilities such as cdrw(1) or	cdrecord(1).  (Neither	mkisofs(8)
       nor cdrecord(1) are SunOS man pages.)

       Caution -

	 The directory tree media-root must contain the file boot/grub/stage2_eltorito, which will be written to the media boot sectors. This file
	 will be modified with some boot information, thus it must be writable. If necessary, first save a copy prior to running this utility.

OPTIONS

       The following options are supported:

       -l label

	   Sets label as the label/volume name of the ISO image.

       -v

	   Verbose. Multiple -v options increase verbosity.

OPERANDS

       The following operands are supported:

       media-root

	   Top-level directory of an on-disk Solaris install media.

       iso

	   Name of the output file which will contain the resulting ISO image.

EXAMPLES

       Example 1 Creating an ISO Image and Burning a CD/DVD

       The following commands create an ISO image from the content of s10u1 and burn the image to a CD/DVD.

	 # /usr/bin/mkcd s10u1 s10u1.iso
	 # /usr/bin/cdrw -i s10u1.iso

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cdrw(1), attributes(5)

       mkisofs(8), (/usr/share/man/man8/mkisofs.8), in the  SUNWfsman package (not a SunOS man page)

SunOS 5.11							    25 Jul 2008 							  mkcd(1M)