Hi, I am writing up a document on setting up mosix on Debian GNU/Linux. I'm attaching a .txt of the document I've produced so far. The html version is available at http://www.infofin.com/~gandalf/doc/mosix-debian/mosix-debian.html Send me feedback, and let me know if you find the document useful. viral -- http://www.infofin.com/~gandalf Hanging on in quiet desperation is the English way, The time is gone, the song is over, thought I'd something more to say.
Mosix on Debian GNU/Linux mini-HOWTO Viral Shah <firstname.lastname@example.org> Sun, 19 Aug 2001 19:32:16 +0530 This document describes the setting up of a Mosix cluster using Debian GNU/Linux. ______________________________________________________________________ Table of Contents 1. Introduction 1.1 New Versions of this Document 1.2 Standard Disclaimer 1.3 Copyright Information 2. Downloading and Installing mosix. 2.1 Get the packages from the 'testing' distribution. 3. Compiling a mosix kernel 4. Configuring mosix defaults 5. Configuring system services 6. Other services for a mosix cluster. 7. Have fun ______________________________________________________________________ 11.. IInnttrroodduuccttiioonn 11..11.. NNeeww VVeerrssiioonnss ooff tthhiiss DDooccuummeenntt The most current version of this document will be available at http://www.infofin.com/~gandalf/docs/mosix-debian. 11..22.. SSttaannddaarrdd DDiissccllaaiimmeerr Use the information in this document at your own risk. There is a good chance that using the information in this document, you might severely damage your system and/or lose data. But you know all that, now, don't you ? ;-) 11..33.. CCooppyyrriigghhtt IInnffoorrmmaattiioonn This document is copyrighted (C) 2001 Viral Shah and distributed under the following terms: This document may be reproduced and distributed in whole or in part, in any medium physical or electronic, as long as this copyright notice is retained on all copies. Commercial redistribution is allowed and encouraged; however, the author would like to be notified of any such distributions. All translations, derivative works, or aggregate works incorporating this document must be covered under this copyright notice. That is, you may not produce a derivative work from this document and impose additional restrictions on its distribution. Exceptions to these rules may be granted under certain conditions; please contact the author of this document for details. 22.. DDoowwnnllooaaddiinngg aanndd IInnssttaalllliinngg mmoossiixx.. It is assumed that the reader has used Debian GNU/Linux for some time and is familiar with the system, in general. It is also assumed that the target machines are already setup, and running a recent version of Debian GNU/Linux. The aim of this document is to allow a user to quickly setup a small to medium sized mosix cluster, and does not attempt to provide a solution for every situation. 22..11.. GGeett tthhee ppaacckkaaggeess ffrroomm tthhee ''tteessttiinngg'' ddiissttrriibbuuttiioonn.. The current 'stable' distribution doesn't include mosix and related software. Hence you will have to modify /etc/apt/sources.list and add the following line for getting the packages from the testing distribution. deb http://http.us.debian.org/debian testing main Now run apt-get update to update the lists. The following mosix related software is available on Debian: +o mosix -- The binaries for using mosix. +o kernel-patch-mosix -- The kernel patch for mosix. +o mps -- mps and mtop for a mosix cluster. +o mosixview -- Graphical interface to mosctl. +o update-cluster -- Cluster configuration tool for mosix.map. APT takes care of dependencies and versions. The packages can be downloaded and installed with apt-get install mosix kernel-patch-mosix mps mosixview update-cluster If you install update-cluster, the mosix package will detect so, and run a debconf script that will allow you to generate /etc/mosix/mosix.map. (Currently, this will only do simple configurations, and the complex topologies will have to be created by hand.) Note, in Debian, the configuration files are placed in /etc/mosix and not in /etc. update-cluster is a new tool, which aims to keep information about the cluster, which can be used by various other packages to generate their config files. 33.. CCoommppiilliinngg aa mmoossiixx kkeerrnneell Make sure you have the package kernel-package installed. On a Debian system, make-kpkg is used to compile a kernel. Get the current linux kernel, and cd into its top-level directory. Then, the running the script /usr/src/kernel-patches/i386/apply/mosix will make sure that the kernel version is correct, and that everything is alright, before applying the patch. Once the patch is applied, run make menuconfig to configure the kernel, and then compile it with fakeroot make-kpkg -rev=mosix.1.0 kernel_image This will produce a .deb package of your custom compiled mosix kernel, which can then be installed with dpkg -i kernel-image-*.deb Copy this new kernel deb to every machine in the cluster and install it along with the rest of the packages. Reboot, and you will have a mosix system running ! 44.. CCoonnffiigguurriinngg mmoossiixx ddeeffaauullttss The mosix package provides a file /etc/default/mosix which can be configured for certain defaults. For example, setting MOSIX_NODE=yes is required (and is the default) for mosix to be initialised upon bootup. You can also initialise mosix by hand with /etc/init.d/mosix start. The other things that can be currently configured are the default node policy using the variables MIGRATE and BLOCK. Setting MIGRATE=yes allows local processes to migrate to remote nodes by default. Similarly, BLOCK=no will allow remote processes to migrate to the local node, by default. MFS can be disabled with MFS=no. Finer grained per-process control is being worked upon right now. 55.. CCoonnffiigguurriinngg ssyysstteemm sseerrvviicceess Mosix on Debian systems doesn't configure the system services yet. Hence, one has to patch /etc/inittab, /etc/inetd.conf, and other services such as ssh etc. by hand, so that they don't migrate to other nodes. This is currently not done, as it can be potentially dangerous, when other packages override the changes or install newer versions of configuration files. A good policy can be to set the policy to 'don't migrate' by default unless the user specifically asks for it. The README that comes along with mosix explains these issues quite well. 66.. OOtthheerr sseerrvviicceess ffoorr aa mmoossiixx cclluusstteerr.. Its generally a good idea to have NFS configured, unless you're using MFS. The debian packages nfs-kernel-server and nfs-user-server provide the NFS packages. Its also a good idea to have an arp server in a mosix network. The debian package arpd can be used to setup an ARP server. Mosix works very well with diskless workstations, and the debian package diskless provides an easy and convenient way to install diskless clients. http://www.infofin.com/~gandalf/articles/diskless_debian.txt and the README.Debian in the diskless package are a good starting point to start setting up diskless Debian clients. 77.. HHaavvee ffuunn I hope this document was useful to you in some way. If it was, drop me a mail at email@example.com and exchange a couple of lines with me. It will make me feel happy for having been useful. :-)
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