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

• 更改第二台主機名稱 node02

  $ sudo vim /etc/hostname
  $ sudo hostname -f /etc/hostname
  CTRL + D
  
  $ sudo /etc/init.d/gdm restart
  

• 重複單機的 0 ~ 4 步驟
• 確認 /etc/hosts 有彼此的資訊

  // node01 和 node02 的 /etc/hosts
  $ sudo vim /etc/hosts
  192.168.X.X node01
  192.168.X.X node02
  

• 設定兩台的 auto login

  $ su root
  $ ssh-keygen -P ""
  $ cat ~/.ssh/id_rsa.pub > ~/.ssh/authorized_keys
  $ scp -r ~/.ssh node02:~/
  
  $ ssh node02
  $ ssh node01
  CTRL + D
  CTRL + D
  

• 設定共享的 Storage

  // node01 的設定
  $ vim /etc/export
  /home/domains  192.X.X.X(rw,sync,async,no_root_squash,no_subtree_check)
  /home/one      192.X.X.X(rw,sync,async,no_root_squash,no_subtree_check)
  $ /etc/init.d/nfs-kernel-server start
  $ showmount -a
  
  // node02 的設定
  $ sudo mount.nfs node01@/home/domains /home/domains
  $ sudo mount.nfs node01@/home/one /home/one
  $ mount
  

---

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
  

• ​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 
  
  // 配置 ONE 環境變數
  $ vim ~/.bashrc
  export ONE_LOCATION=/home/one
  export ONE_XMLRPC=http://localhost:2633/RPC2
  export PATH=$PATH:$ONE_LOCATION/bin
  $ source ~/.bashrc
  
  $ sudo ./install.sh -d /home/one
  

• 3.3 啟動 ONE

  $ $ONE_LOCATION/bin/one start
  

---

4.使用 ONE 於 Xen Cluster

• 4.0 編輯 ONE 設定檔

  $ cd /home/one
  $ vim etc/oned.conf
  VM_POLLING_INTERVAL      = 1
  

• 4.1 新增 Host/dom0 到 ONE pool

  $ onehost add node01 im_xen vmm_xen tm_nfs
  $ onehost add node02 im_xen vmm_xen tm_nfs
  
  $ sudo onehost list
  

• 4.1 使用 ONE 來開啟 VM

  $ vim /home/domains/xen01.one
  NAME   = xen01
  CPU    = 1
  MEMORY = 156
  OS = [ kernel     = /boot/vmlinuz-2.6.22.9-rock,
         initrd     = /boot/initrd.img-2.6.22.9-rock,
         root       = sda2,
         kernel_cmd = "ro xencons=tty console=tty1"]
  DISK = [ source   = /home/domains/xen01/disk.img,
           clone    = no,
           target   = sda2,
           readonly = no]
  DISK = [  type     = swap,
            size     = 512,
            target   = "sda1",
            readonly = "no" ]
  NIC = [mac=""]
  
  $ sudo onevm create xen01.one 
  $ sudo onevm list
  

---

5.使用 ONE 開啟 Cluster

$ cd /home/one
$ ./one_create_cluster.sh

---

6.測試 Live Migration

• 7.2 Live Migrate

  $ sudo onevm livemigrate xen01 node02 
  $ sudo onevm list