= 叢集 =
== 1.佈署成Cluster ==
 1. 可使用 DRBL 或 !CloneZilla 來佈署 Cluster
 2. 此次為了方便，可直接使用隔壁桌的電腦 
----
== 2.第二台機器的設定 ==
 * 重複單機的 1 ~ 4 步驟
 * 確認 /etc/hosts 有彼此的資訊
 * 設定兩台的 auto login
{{{
$ ssh-keygen -P ""
$ cp ~/.ssh/id_rsa.pub ~/.ssh/authorized_keys
$ scp -r ~/.ssh node02:~/

$ ssh node02
$ ssh node01
CTRL + D
}}}
----
== 3.安裝 ONE ==
 * '''''__3.1 安裝需要的套件__'''''
{{{
$ sudo aptitude install ruby sqlite3 libsqlite3-0 libsqlite3-dev libsqlite3-ruby \
libxmlrpc-c3 libxmlrpc-c3-dev scons g++ flex bison
}}}
 * '''''__[http://www.opennebula.org/doku.php?id=software 3.2 下載 ONE 和安裝]__'''''
{{{
$ tar zxvf one-1.2.0.tar.gz
$ cd one-1.2.0
$ scons
$ sudo mkdir /home/one 
$ sudo ./install.sh -d /home/one
}}}
 * '''''__3.3 配置 ONE__'''''
{{{
$ sudo vim /etc/profile
export ONE_LOCATION=/home/one
export ONE_XMLRPC=http://localhost:2633/RPC2
export PATH=$ONE_LOCATION/bin:$PATH

$ source /etc/profile
}}}
 * '''''__3.4 啟動 ONE__'''''
{{{
$ sudo $ONE_LOCATION/bin/one start
}}}
----
== 4.使用 ONE 於 Xen Cluster ==
 * '''''__4.1 新增 Host/dom0 到 ONE pool__'''''
{{{
$ sudo onehost add node01 im_xen vmm_xen tm_ssh
$ sudo onehost add node02 im_xen vmm_xen tm_ssh

$ sudo onehost list
}}}
 *  '''''__4.1 使用 ONE 來開啟 VM__'''''
{{{
$ cat /etc/xen/xen01.one
NAME   = hadoop01
CPU    = 1
MEMORY = 156                                                                  
 
OS = [ kernel     = /boot/vmlinuz-2.6.22.9,
       initrd     = /boot/initrd.img-2.6.22.9,
       root       = sda1,
       kernel_cmd = "ro xencons=tty console=tty1"]
 
DISK = [ source   = /home/domains/xen01/disk.img,
         clone    = no,
         target   = sda1,
         readonly = no]
 
DISK = [  type     = swap,
          size     = 512,
          target   = "sda2",
          readonly = "no" ]
       
NIC = [NETWORK = "net", IP = "X.X.X.X"]

$ sudo onevm create xen01.one 
$ sudo onevm list
}}}
----
== 5.設定 ONE 的網路 ==
{{{
$ sudo vim /etc/xen/net.one

$ sudo onevnet create net.one
}}}
----
== 6.使用 ONE 開啟 Cluster ==
{{{
$ cd /home/one
$ ./one_create_cluster.sh
}}}
----
== 7.測試 Live Migration ==
 *  '''''__7.1 建立共享的Storage (使用NFS)__'''''
{{{
// node01 的設定
$ vim /etc/export

// node02 的設定
$ sudo mount -t nfs node01@/home/one /home/one
}}}
 * '''''__7.2 Live Migrate__'''''
{{{
$ sudo onevm livemigrate xen01 node02 
$ sudo onevm list
}}}