source: branches/2.2.10/mindi/README.pxe @ 2499

Last change on this file since 2499 was 2499, checked in by Bruno Cornec, 11 years ago

nfsopt restore boot time option added to support custom mount options for network restore
(2.2.9.2 backport)

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1$Id: README.pxe 2499 2009-12-05 16:55:04Z bruno $
2
3README for mondo/mindi usage with PXE
4
5mondorescue now supports the possibility to deploy mondo-images using the Pre eXecution Environment (PXE) standard.
6As this README only focusses on the mondorescue part, please read how to do Linux deployments with pxelinux on http://syslinux.zytor.com/pxe.php
7
8To use it, please do the following on your deployment server:
9
10Add the following line to your default file:
11label mondo
12        kernel vmlinuz-mondo
13        append initrd=initrd-mondo load_ramdisk=1 prompt_ramdisk=0 ramdisk_size=131072 rw root=/dev/ram iso acpi=off apm=off devfs=nomount exec-shield=0 pxe [proto=nfs|sshfs] [prefix=machine] [ipconf=(ipdev:ipadr:netmask:broadcast:gateway|ipdev:dhcp)] [netfsmount=server:mountpoint] [netfsopt=-o option][netfspath=local_path] [ping=#] ...
14
15ipdev is the device name (e.g. eth2)
16ipadr is the IP Address (e.g. 192.168.1.1)
17netmask is the Netmask (e.g. 255.255.255.0)
18broadcast is the Network broadcast (e.g. 192.168.1.255)
19gateway is the default gateway (e.g. 192.168.1.254)
20dhcp is a keyword. Using it will provide all the previous 4 values to activate the LAN interface.
21proto is the protocol to use for mounting the remote share (default is NFS, sshfs is also available)
22server is the ip addr of the Remote Network server
23mountpoint is the mount point on the Remote Network server to use (if NFS, should be in /etc/exports of the NFS server)
24netfsmount is the server and mountpoint on which the ISO is available, if different from the one at backup time. For SSHFS the server part can be of the form user@server.
25netfsopt may contains options passed to the mount command
26netfspath is the local path on the remote server where the image is located, if different from the one at backup time.
27local_path is the local directory under which the mage was made (with the -d option)
28rmadisk_size may have to be increase to 131072 on more recent distributions such as rhel 5
29The [] mean this parameter is optional
30The () mean that you have a choice with the '|' meaning 'or'
31
32The initrd and kernel file come from the first bootable media
33created by mondoarchive. To get them, please issue:
34
35# mount /path/to/mondorescue-1.iso /mnt/cdrom -o loop
36# cp -a /mnt/cdrom/vmlinuz /var/tftpboot/vmlinuz-mondo
37# cp -a /mnt/cdrom/initrd.img /var/tftpboot/initrd-mondo
38# umount /mnt/cdrom
39
40Thus the PXE ROM will boot mondo's kernel and mondo's initrd in memory and will append all the right configuration options (as you find in isolinux.cfg on the first bootable media) to which you need to add the keyword pxe.
41(You need to have backup your data using the NFS option of mondoarchive)
42
43If you used the -p option of mondoarchive, you may specify the real name of mondo images to use during restore. To do that use prefix=machine on the initrd line, after the pxe keyword, to load the ISO images saved with -p machine.
44Without prefix keyword, the name of the images used during archiving with the -p option will be used (they may differ). If -p wasn't used then the name mondorescue-1.iso, ... will be used.
45
46During boot mondorestore will start your NFS configuration and mount mondo's content from the network rather than from a physical media. You may alter the IP configuration stored from the original machine by passing the ipconf option describing respectively the IP address, netmask, broadcast and default gateway you want to setup for the machine, separated by ':'. Or alternatively, you may specify the dhcp keyword so that a DHCP request is made to get those information. In the 2 cases, you have to mention on which physical interface those parameters should apply. On some configurations, you may also want to increase the number of ping queries made before the NFS mount, which is of 3 by default, using the ping option and give the number you want. If you have a different NFS server for the deployment than for the archiving, you can also precise it through the netfsmount option. The structure on both server under the mountpoint has to be the same.
47
48CAVEAT: the limit to the number of char on the append line is 255. Use symlinks to reduce the size of your path if needed.
49
50Please report any problem around that tool to bruno@mondorescue.org
51
522009-12-05 nfsopt added tp allow for custom options at mount time
532009-09-09 Changed to netfs for multi protocol support (nfs, sshfs, ...)
542009-05-07 nfspath added to allow redeployment from another NFS directory
552006-06-10 nfsmount added to allow redeployment from another NFS server
562006-06-02 ipdev added to allow redeployment on another interface
572005-12-18 new ipconf and ping option
582005-12-14 detailed explanations on where to find initrd and kernel
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