HOWTO Clone a Machine - Revision history

Gordp at 17:18, 24 November 2009

2009-11-24T17:18:10Z

← Older revision		Revision as of 17:18, 24 November 2009
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	<font color=red>livecd</font> <font color=blue>#</font> '''mke2fs /dev/sda1'''		<font color=red>livecd</font> <font color=blue>#</font> '''mke2fs /dev/sda1'''
	<font color=red>livecd</font> <font color=blue>#</font> '''mkswap /dev/sda2'''		<font color=red>livecd</font> <font color=blue>#</font> '''mkswap /dev/sda2'''
	<font color=red>livecd</font> <font color=blue>#</font> '''mke2fs -j /dev/sda3'''		<font color=red>livecd</font> <font color=blue>#</font> '''mke2fs -j /dev/sda3''' ''<note: my personal preference is for XFS...'''mkfs.xfs /dev/sda3'''>''

Gordp at 17:13, 24 November 2009

2009-11-24T17:13:48Z

← Older revision		Revision as of 17:13, 24 November 2009
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	Setup grub on the hard drive:		Setup grub on the hard drive:
	<font color=red>livecd</font> <font color=blue>#</font> '''grep -v rootfs /proc/mounts > /etc/mtab'''		<font color=red>livecd</font> <font color=blue>#</font> '''grep -v rootfs /proc/mounts > /etc/mtab'''
	<font color=red>livecd</font> <font color=blue>#</font> '''grub-install /dev/~~hda~~'''		<font color=red>livecd</font> <font color=blue>#</font> '''grub-install /dev/sda'''

	Finish Configuring the machine:		Finish Configuring the machine:

Gordp at 22:52, 18 November 2009

2009-11-18T22:52:42Z

← Older revision		Revision as of 22:52, 18 November 2009
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	== Client/To Be Imaged Machine ==		== Client/To Be Imaged Machine ==
	Boot the machine you want the image deployed on with a minimal Gentoo CD. Mount that hard drive and partition it appropriately.		Boot the machine you want the image deployed on with a minimal Gentoo CD. Mount that hard drive and partition it appropriately.
	<font color=red>livecd</font> <font color=blue>~~root~~ #</font> '''fdisk /dev/sda'''		<font color=red>livecd</font> <font color=blue>#</font> '''fdisk /dev/sda'''

	/dev/sda1 /boot 500M ''<make this partition bootable>''		/dev/sda1 /boot 500M ''<make this partition bootable>''

Gordp at 22:52, 18 November 2009

2009-11-18T22:52:24Z

Gordp at 22:48, 18 November 2009

2009-11-18T22:48:18Z

← Older revision		Revision as of 22:48, 18 November 2009
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	* Follow these steps, as root:		* Follow these steps, as root:

	<font color=red>~~livecd~~</font> <font color=blue>root #</font> '''cd /'''		<font color=red>hostname</font> <font color=blue>root #</font> '''cd /'''
	<font color=red>~~livecd~~</font> <font color=blue>root #</font> '''mount /boot'''		<font color=red>hostname</font> <font color=blue>root #</font> '''mount /boot'''
	<font color=red>~~livecd~~</font> <font color=blue>root #</font> '''tar cpzf hostname.tgz / --exclude=/hostname.tgz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys --exclude=/tmp'''		<font color=red>hostname</font> <font color=blue>root #</font> '''tar cpzf hostname.tgz / --exclude=/hostname.tgz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys --exclude=/tmp'''

	* This will create a host image of about 700 MB for a minimal server; as much as 22GB for a loaded workstation. Forgetting to mount /boot will mean your target machine won't have any kernel, nor grub.conf! You'll need a rescue-CD to create grub.conf, and you'll have to compile a fresh kernel.		* This will create a host image of about 700 MB for a minimal server; as much as 22GB for a loaded workstation. Forgetting to mount /boot will mean your target machine won't have any kernel, nor grub.conf! You'll need a rescue-CD to create grub.conf, and you'll have to compile a fresh kernel.

Gordp at 17:24, 17 November 2009

2009-11-17T17:24:28Z

← Older revision		Revision as of 17:24, 17 November 2009
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	Using standard Linux tools, this guide explains how to copy a working Linux machine onto a brand new machine, in less than an hour.		Using standard Linux tools, this guide explains how to copy a working Linux machine onto a brand new machine, in less than an hour. It is also very useful to re-create a machine which is undergoing a disk-(subsystem) upgrade, such as migrating to RAID or a different level of RAID.

	== Server/Golden Machine ==		== Server/Golden Machine ==

	First, create an image of a good working system or use an existing image, if you have one. At Research we have images stored at musashi:/export/mirror/image/fresh-deployable-gentoo-images		First, create an image of a good working system or use an existing image, if you have one. At Research we have images stored at musashi:/export/mirror/image/fresh-deployable-gentoo-images
	* ~~Do this~~ as root.		* Follow these steps, as root:

	# cd /		<font color=red>livecd</font> <font color=blue>root #</font> '''cd /'''
	# tar cpzf hostname.tgz / --exclude=/hostname.tgz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys --exclude=/tmp		<font color=red>livecd</font> <font color=blue>root #</font> '''mount /boot'''
			<font color=red>livecd</font> <font color=blue>root #</font> '''tar cpzf hostname.tgz / --exclude=/hostname.tgz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys --exclude=/tmp'''

	* This will create a host image of about 700 MB.		* This will create a host image of about 700 MB for a minimal server; as much as 22GB for a loaded workstation. Forgetting to mount /boot will mean your target machine won't have any kernel, nor grub.conf! You'll need a rescue-CD to create grub.conf, and you'll have to compile a fresh kernel.

	== Client/To Be Imaged Machine ==		== Client/To Be Imaged Machine ==
	Boot the machine you want the image deployed on with a minimal Gentoo CD. Mount that hard drive and partition it appropriately.		Boot the machine you want the image deployed on with a minimal Gentoo CD. Mount that hard drive and partition it appropriately.
	# fdisk /dev/~~hda~~		<font color=red>livecd</font> <font color=blue>root #</font> '''fdisk /dev/sda'''

	/dev/~~hda1~~ /boot 500M		/dev/sda1 /boot 500M ''<make this partition bootable>''
	/dev/~~hda2~~ swap ~~2000M~~		/dev/sda2 swap 8000M
	/dev/~~hda3 /tmp 4000M~~		/dev/sda3 / 30000M ''<or, the entire remainder of the disk>''
	~~/dev/hda4~~ /

	Add filesystems		Add filesystems
	# mke2fs /dev/~~hda1~~		<font color=red>livecd</font> <font color=blue>root #</font> '''mke2fs /dev/sda1'''
	# mkswap /dev/~~hda2~~		<font color=red>livecd</font> <font color=blue>root #</font> '''mkswap /dev/sda2'''
	# mke2fs -j /dev/~~hda3~~		<font color=red>livecd</font> <font color=blue>root #</font> '''mke2fs -j /dev/sda3'''
	~~# mke2fs -j /dev/hda4~~

	Mount drives:		Mount drives:
	# mount /dev/~~hda4~~ /mnt/gentoo		<font color=red>livecd</font> <font color=blue>root #</font> '''mount /dev/sda3 /mnt/gentoo'''
	# mkdir /mnt/gentoo/tmp		<font color=red>livecd</font> <font color=blue>root #</font> '''mkdir /mnt/gentoo/tmp'''
	# mkdir /mnt/gentoo/boot		<font color=red>livecd</font> <font color=blue>root #</font> '''mkdir /mnt/gentoo/boot'''
	# mkdir /mnt/gentoo/proc		<font color=red>livecd</font> <font color=blue>root #</font> '''mkdir /mnt/gentoo/proc'''
	# ~~mount /dev/hda3 /mnt/gentoo~~/~~tmp~~		<font color=red>livecd</font> <font color=blue>root #</font> '''mount /dev/sda1 /mnt/gentoo/boot'''
	# mount /dev/~~hda1~~ /mnt/gentoo/boot		<font color=red>livecd</font> <font color=blue>root #</font> '''swapon /dev/sda2'''
	# swapon /dev/~~hda2~~		<font color=red>livecd</font> <font color=blue>root #</font> '''mount -t proc none /mnt/gentoo/proc'''
	# mount -t proc ~~proc~~ /mnt/gentoo/proc

	Copy over the hostname.tgz file onto this machine.		Copy over the hostname.tgz file onto this machine.
	# scp root@hostname:/hostname.tgz /mnt/gentoo		<font color=red>livecd</font> <font color=blue>root #</font> '''scp root@hostname:/hostname.tgz /mnt/gentoo'''

	Extract it into the root of the new machine /mnt/gentoo		Extract it into the root of the new machine /mnt/gentoo
	# cd /mnt/gentoo		<font color=red>livecd</font> <font color=blue>root #</font> '''cd /mnt/gentoo'''
	# tar -xzf hostname.tgz		<font color=red>livecd</font> <font color=blue>root #</font> '''tar -xzf hostname.tgz'''

	Chroot into the new environment.		Chroot into the new environment.
	# chroot /mnt/gentoo /bin/bash		<font color=red>livecd</font> <font color=blue>root #</font> '''chroot /mnt/gentoo /bin/bash'''
	# env-update && source /etc/profile		<font color=red>livecd</font> <font color=blue>root #</font> '''env-update && source /etc/profile'''

	Verify /boot/grub/grub.conf and /etc/fstab		Verify /boot/grub/grub.conf and /etc/fstab

	Setup grub on the hard drive:		Setup grub on the hard drive:
	# grep -v rootfs /proc/mounts > /etc/mtab		<font color=red>livecd</font> <font color=blue>root #</font> '''grep -v rootfs /proc/mounts > /etc/mtab'''
	# grub-install /dev/hda		<font color=red>livecd</font> <font color=blue>root #</font> '''grub-install /dev/hda'''

	Finish Configuring the machine:		Finish Configuring the machine:
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	* Check /etc/make.conf		* Check /etc/make.conf

	Make system dirs		Make system dirs:
	# mkdir -p /mnt/gentoo-distfiles		<font color=red>livecd</font> <font color=blue>root #</font> '''mkdir -p /mnt/gentoo-distfiles'''
	# mkdir -p /sys		<font color=red>livecd</font> <font color=blue>root #</font> '''mkdir -p /sys'''

	Exit and umount drives, remove Gentoo CD, reboot the machine.		Exit and umount drives, remove Gentoo CD, reboot the machine.

Mdeepwel: /* Server/Golden Machine */

2006-10-26T18:52:32Z

Server/Golden Machine

← Older revision		Revision as of 18:52, 26 October 2006
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	# cd /		# cd /
	# tar cpzf hostname.tgz / --exclude=/hostname.tgz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys		# tar cpzf hostname.tgz / --exclude=/hostname.tgz --exclude=/proc --exclude=/lost+found --exclude=/mnt --exclude=/sys --exclude=/tmp

	* This will create a host image of about ~~1.5 GB~~.		* This will create a host image of about 700 MB.

	== Client/To Be Imaged Machine ==		== Client/To Be Imaged Machine ==

Mdeepwel: /* Client/To Be Imaged Machine */

2006-10-26T18:50:40Z

Client/To Be Imaged Machine

← Older revision		Revision as of 18:50, 26 October 2006
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	Boot the machine you want the image deployed on with a minimal Gentoo CD. Mount that hard drive and partition it appropriately.		Boot the machine you want the image deployed on with a minimal Gentoo CD. Mount that hard drive and partition it appropriately.
	# fdisk /dev/hda		# fdisk /dev/hda

			/dev/hda1 /boot 500M
			/dev/hda2 swap 2000M
			/dev/hda3 /tmp 4000M
			/dev/hda4 /

	Add filesystems		Add filesystems
	# mke2fs /dev/hda1		# mke2fs /dev/hda1
	# mkswap /dev/hda2		# mkswap /dev/hda2
	# mke2fs -j /dev/hda3		# mke2fs -j /dev/hda3
			# mke2fs -j /dev/hda4

	Mount drives:		Mount drives:
	# mount /dev/hda3 /mnt/gentoo		# mount /dev/hda4 /mnt/gentoo
			# mkdir /mnt/gentoo/tmp
			# mkdir /mnt/gentoo/boot
			# mkdir /mnt/gentoo/proc
			# mount /dev/hda3 /mnt/gentoo/tmp
	# mount /dev/hda1 /mnt/gentoo/boot		# mount /dev/hda1 /mnt/gentoo/boot
	# swapon /dev/hda2		# swapon /dev/hda2
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	* Static ip address.		* Static ip address.
	* Reset log files.		* Reset log files.
			* Check /etc/make.conf

			Make system dirs
			# mkdir -p /mnt/gentoo-distfiles
			# mkdir -p /sys

	Exit and umount drives, remove Gentoo CD, reboot the machine.		Exit and umount drives, remove Gentoo CD, reboot the machine.

Mmmark: /* Client/To Be Imaged Machine */

2006-10-03T18:43:53Z

Client/To Be Imaged Machine

← Older revision		Revision as of 18:43, 3 October 2006
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	* Set the hostname.		* Set the hostname.
	* Static ip address.		* Static ip address.
			* Reset log files.

	Exit and umount drives, remove Gentoo CD, reboot the machine.		Exit and umount drives, remove Gentoo CD, reboot the machine.

Mmmark: /* Client/To Be Imaged Machine */

2006-10-03T18:40:42Z

Client/To Be Imaged Machine

← Older revision		Revision as of 18:40, 3 October 2006
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	* Static ip address.		* Static ip address.

	Exit and umount drives, reboot the machine.		Exit and umount drives, remove Gentoo CD, reboot the machine.