xen杂记（3）

下在光盘镜像 isolinux目录下的两个文件
[root@node1 ~]# ll
total 40228
drwxr-xr-x 35 root root     4096 Sep 11 08:39 busybox-1.22.1
-rw-r--r--  1 root root  2218650 Sep 11 08:08 busybox-1.22.1.tar.bz2
-rw-r--r--  1 root root 34815427 Sep 12 05:22 initrd.img
-rw-r--r--  1 root root  4152336 Sep 12 05:22 vmlinuz

创建目录存放：
[root@node1 ~]# mkdir /images/kernel
[root@node1 ~]# mv vmlinuz initrd.img /images/kernel/

[root@node1 xen]# pwd
/etc/xen
[root@node1 xen]# cp busybox centos

[root@node1 xen]# vim centos 

name = "centos-001"
kernel = "/images/kernel/vmlinuz"
ramdisk = "/images/kernel/initrd.img"
extra = ""
vif = [ 'bridge=xenbr0' ]
disk = [ '/images/xen/centos6.6.img,qcow2,xvda,rw' ]

#root = "/dev/xvda ro"

[root@node1 xen]# qemu-img create -f qcow2 -o size=120G,preallocation=metadata /images/xen/centos6.6.img

[root@node1 xen]# xl create /etc/xen/centos

[root@node1 xen]# xl list
Name                                        ID   Mem VCPUs  State   Time(s)
Domain-0                                     0  1024     1     r-----     691.5
centos-001                                  21   512     1     r-----       5.8

[root@node1 ~]# xl destroy centos-001

修改配置文件
vim /etc/xen/centos
extra = "ks=http://172.16.0.1/centos6.x86_64.cfg"
on_reboot = "shutdown"

开机后就会自动安装系统
[root@node1 xen]# xl create /etc/xen/centos

vim /etc/xen/centos
name = "centos-001"

bootloader = "pygrub"
memory = 512
vcpus = 1
vif = [ 'bridge=xenbr0' ]
disk = [ '/images/xen/centos6.6.img,qcow2,xvda,rw' ]

# xl shutdown centos-001

[root@node1 xen]# yum info cloud-init
Loaded plugins: fastestmirror, security
Loading mirror speeds from cached hostfile
Available Packages
Name        : cloud-init
Arch        : noarch
Version     : 0.7.4
Release     : 2.el6
Size        : 487 k
Repo        : ali-epel
Summary     : Cloud instance init scripts

[root@node1 xen]# vim /etc/xen/busybox

vfb = [ 'sbl=1' ]

[root@node1 ~]# yum install tigervnc

[root@node1 ~]# vim /etc/sysconfig/vncservers 

VNCSERVERS="1:root"
VNCSERVERARGS[1]="-geometry 800x600"

[root@node1 ~]# vim /etc/xen/centos 

vfb = [ 'vnc=1' ]

vfb = [ 'vnc=1,vnclisten=0.0.0.0,vncpasswd=123456' ]

fdisk /dev/sda
Last cylinder, +cylinders or +size{K,M,G} (24134-32636, default 32636): +30G
/dev/sda11          24134       28050    31463302+  83  Linux

Command (m for help): t
Partition number (1-11): 11
Hex code (type L to list codes): 8e
/dev/sda11          24134       28050    31463302+  8e  Linux LVM

[root@node1 ~]# partx -a /dev/sda
[root@node1 ~]# partx -a /dev/sda

如果遇到系统grub损坏，进入拯救模式：
# grub-install /dev/sda

创建物理卷
[root@node1 ~]# pvcreate /dev/sda11
  Physical volume "/dev/sda11" successfully created

创建卷组：
[root@node1 ~]# vgcreate myvg /dev/sda11
  Volume group "myvg" successfully created

创建名为“bbox”的逻辑卷
[root@node1 ~]# lvcreate -L 2G -n bbox myvg
  Logical volume "bbox" created.

格式化：
[root@node1 ~]# mke2fs -t ext2 /dev/myvg/bbox

挂载：
[root@node1 ~]# mount /dev/myvg/bbox /mnt/

[root@node1 ~]# cp -a busybox-1.22.1/_install/* /mnt/

[root@node1 mnt]# cd /mnt/
[root@node1 mnt]# mkdir -pv proc dev sys tmp etc var boot usr

# cd /etc/xen/
[root@node1 xen]# cp busybox bbox

[root@node1 xen]# vim bbox 

name = "bbox-001"
kernel = "/boot/vmlinuz"
ramdisk = "/boot/initramfs.img"
extra = "selinux=0 init=/bin/sh"
vif = [ 'bridge=xenbr0' ]

disk = [ '/dev/myvg/bbox,raw,xvda,rw' ]

查看生成的配置信息：
[root@node1 xen]# xl create bbox -n

启动测试：
[root@node1 xen]# xl create bbox -c

/ #

[root@node1 xen]# yum install libvirt libvirt-daemon-xen.x86_64 virt-manager

[root@node1 xen]# service libvirtd start

启动，会弹出图形界面
[root@node1 xen]# virt-manager

弹出第一个窗口点 no

[root@node1 ~]# yum install libvirt-client

[root@node1 ~]# virsh help

查看处于运行的虚拟机
[root@node1 ~]# virsh list
 Id    Name                           State
----------------------------------------------------
 0     Domain-0                       running

关闭虚拟机
[root@node1 ~]# virsh destroy centos