[[PageOutline]]
= XEN VM placement engine - OpenNEbula = 
== 1. Requirement ==
 * '''''__1.1 Xen installation__'''''
   * [wiki:Xen_Installation Install from deb]
   * [wiki:Servers/virt_machines/kernel Install from source]
 * '''''__1.2 Required Package Installatiom__'''''
{{{
$ sudo aptitude install ruby sqlite3 libsqlite3-0 libsqlite3-dev libsqlite3-ruby \
libxmlrpc-c3 libxmlrpc-c3-dev scons g++ flex bison
}}}
     * Package information:
        * ruby: An interpreter of object-oriented scripting language Ruby 
        * sqlite3: A command line interface for SQLite 3
        * libxmlrpc-c3: A lightweight RPC library based on XML and HTTP for C and C++
        * scons: A replacement for Make
        * flex: A fast lexical analyzer generator
        * bison: A parser generator that is compatible with YACC

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== 2. OpenNEbula Installation ==
 * '''''__[http://www.opennebula.org/doku.php?id=software 2.1 OpenNEbula download]__'''''
{{{
$ tar zxvf one-1.2.0.tar.gz
$ cd one-1.2.0
$ scons
$ sudo mkdir /home/one 
$ sudo ./install.sh -d /home/one
}}}
 * '''''__2.2 Verification__'''''
{{{
$ ls /home/one
bin  etc  include  lib  share  var
}}}
 * [[Image(content.png)]]

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== 3. OpenNEbula Usage ==
 * '''''__3.1 Environment Setup__'''''
{{{
$ sudo vim /etc/profile
export ONE_LOCATION=/home/one
export ONE_XMLRPC=http://localhost:2633/RPC2
export PATH=$ONE_LOCATION/bin:$PATH
}}}
 * '''''__3.2 OpenNEbula Startup__'''''
{{{
$ sudo ONE_LOCATION/bin/one start
}}}

== 4. Problem ==
 * Ubuntu 8.10 的kernel 2.6.27-9-server 目前只support DomU (no Dom0) 2008/12/10

== 5. 想法 ==
 * OpenNEbula的控制介面非常簡單明瞭，DRBL是否也可加入類似的介面來監控和管理node。
 * 是否撰寫Web版的OpenNEbula介面，讓外界的使用者可以透過簡單的點選來創建自己的VM？

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== 6. Reference ==
 * [http://www.opennebula.org/doku.php?id=start OpenNEbula]