2010-10-31 21:04:10 +00:00
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[[!meta title="Linux Virtual Machines (overview)"]]
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This document is ***WORK IN PROGRESS***
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## Introduction
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This article tries to summarise Linux Virtual Machine
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2010-10-31 21:16:29 +00:00
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methods and is in its early stage. It does not focus
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on different types of hypervisors, but more on the
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issues and features you get with each hypervisor.
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### Host Kernel
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Some supervisors need their own (modified Linux) kernel
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to operate, whereas others work with any Linux kernel.
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Though some of them again need some configurations
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to be turned on in the stock kernel.
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## Comparision table
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[[!table data="""
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Name | Host Kernel
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[QEMU](http://wiki.qemu.org/) | Original
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[KVM](http://www.linux-kvm.org/) | Original w/KVM
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[Linux Containers](http://lxc.sourceforge.net/) | Original w/Containers
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[User Mode Linux](http://user-mode-linux.sourceforge.net/) | Original
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[VMWare](http://www.vmware.com/) | Own
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[Xen](http://www.xen.org/) | Own
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"""]]
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2010-10-31 21:04:10 +00:00
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## Raw import of notes
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The following notes I made some months ago, which will
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be the basis for this article.
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Try all of them and handle them via creature!
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2010-10-31 21:16:29 +00:00
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Installation
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------------
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From host like lxc.
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From "inside" like KVM/QEMU/VMWare.
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2010-10-31 21:04:10 +00:00
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status
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------
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eth: ip addresses / mac / dhcp
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2010-10-31 21:16:29 +00:00
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VMWare
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------
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2010-10-31 21:04:10 +00:00
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2010-10-31 21:16:29 +00:00
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Commercial solution, modified Linux.
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2010-10-31 21:04:10 +00:00
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2010-10-31 21:16:29 +00:00
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### lxc
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2010-10-31 21:04:10 +00:00
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Not completly isolated. Linux only. Many changes to the guest os.
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Some scripts existent (lxc-debian, lxc-fedora). The latter does
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not work on debian.
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lxc-debian mit cache (schlau)
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no real hypervisor existent.
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mac / ipv4 management missing => creature
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adjust init. change dev. do not run udev (why?)
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Root open in the filesystem. Nice. Quota?
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Ressources are shared, if nothing else is specified.
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=> network = all!
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First installation - than virtualisation!
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2010-10-31 21:16:29 +00:00
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2010-10-31 21:04:10 +00:00
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openvz
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------
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templates
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/vz/template/osname/osversion/vz-addons/
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http://wiki.openvz.org/Introduction_to_virtualization
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vserver
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-------
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http://linux-vserver.org/
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virtualbox
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----------
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xen
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---
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different host kernel
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kvm
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---
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mac address,
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ip address => dhcp???
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user-mode-linux
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---------------
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libvirt
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-------
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broken many many times.
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Bootstrapping
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-------------
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how tos
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different methods
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which way for which vm-type
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Network
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-------
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Always dhcp? Either on the vm-host or external.
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Reason: Easy to configure. Scales dynamically.
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How to handle bridges etc.? Independent of the os?
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Reuse OS
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[[!tag net unix]]
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