Xen

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Latest revision as of 19:38, 23 October 2012

Installation

Initialization

Context:

Create a SSD partition, number 3, formatted with a 6 GB Ext4 file system.
Attach an existing HDD partition named /vm to store the virtual machines.

Partitioning

```
fdisk /dev/sda
```

n 3 [enter] +6G

Formatting

mkfs.ext4 -E discard -L DEBIAN /dev/sda3

```
mount /dev/disk/by-label/DEBIAN /mnt
```

ArchLinux as a source

```
pacman -S abs
```
```
pacman -S base-devel
```
```
abs
```
```
mkdir /tmp/debootstrap
```
```
cd /tmp/debootstrap
```

wget https://aur.archlinux.org/packages/de/debootstrap/PKGBUILD

```
makepkg -s
```
```
pacman -U debootstrap*
```

Debian as a host

debootstrap --arch=amd64 wheezy /mnt http://ftp.fr.debian.org/debian

```
LANG=C chroot /mnt /bin/bash
```
```
export TERM=xterm-color
```
```
cd /dev
```
```
MAKEDEV generic
```
```
cd /
```
```
mkdir /vm
```

Configuration

Filesystems

```
nano /etc/fstab
```

# /etc/fstab
#
# <file system>           <dir>    <type> <options>                           <dump> <pass>

/dev/disk/by-label/DEBIAN /        ext4   discard,noatime,nodiratime,defaults 0      1

proc                      /proc    proc   defaults                            0      0
devpts                    /dev/pts devpts defaults                            0      0
shm                       /dev/shm tmpfs  nodev,nosuid                        0      0
tmpfs                     /tmp     tmpfs  size=2048M                          0      0
tmpfs                     /var/log tmpfs  size=64M                            0      0

/dev/disk/by-label/VM     /vm      ext4   defaults                            0      0

Network

```
nano /etc/network/interfaces
```

auto lo eth0 xenbr0
iface lo inet loopback
iface eth0 inet static
    address 192.168.1.101
    network 192.168.1.0
    netmask 255.255.255.0
    gateway 192.168.1.1
iface xenbr0 inet static
    bridge_ports none
    address 192.168.1.199
    broadcast 192.168.1.255
    netmask 255.255.255.0
    gateway 192.168.1.1

```
nano /etc/resolv.conf
```

nameserver 192.168.1.1

```
echo XEN > /etc/hostname
```
```
nano /etc/hosts
```

127.0.0.1	localhost
127.0.0.1	XEN

Kernel

```
nano /etc/modprobe.d/blacklist.conf
```

blacklist pcspkr
blacklist acpi_cpufreq
blacklist bluetooth

Packages

```
nano /etc/apt/sources.list
```

deb http://ftp.fr.debian.org/debian wheezy main non-free

```
aptitude update
```

Localization

```
aptitude install locales
```
```
dpkg-reconfigure locales
```
```
aptitude install console-data
```
```
dpkg-reconfigure console-data
```

Defaults

Locale

```
nano /etc/default/locale
```

LANG=en_US.UTF-8

Keyboard

```
nano /etc/default/keyboard
```

XKBMODEL="pc105"
XKBLAYOUT="fr"

tmp filesystem

```
nano /etc/default/tmpfs
```

RAMTMP=yes

HDD temperature

```
nano /etc/default/tmpfs
```

RUN_DAEMON="true"
DISKS="/dev/sdb"

rcS

```
nano /etc/default/rcS
```

TMPTIME=-1

Boot Manager

SysLinux

```
exit
```
```
mkdir /boot/Debian
```

cp /mnt/boot/vmlinuz-3.2.0-3-amd64 /boot/Debian/

cp /mnt/boot/initrd.img-3.2.0-3-amd64 /boot/Debian/

ln -s /boot/Debian/vmlinuz-3.2.0-3-amd64 /boot/Debian/vmlinuz

ln -s /boot/Debian/initrd.img-3.2.0-3-amd64 /boot/Debian/initrd.img

```
nano /boot/syslinux/syslinux.cfg
```

LABEL debian
	MENU LABEL De^bian Linux
	LINUX ../Debian/vmlinuz
	APPEND root=/dev/sda3 ro quiet elevator=noop nmi_watchdog=0 vga=0
	INITRD ../Debian/initrd.img

Reboot to Debian

```
shutdown -r now
```

Xorg

```
aptitude install xfce4
```

wget http://us.download.nvidia.com/XFree86/Linux-x86_64/304.60/NVIDIA-Linux-x86_64-304.60.run

```
chmod +x NVIDIA-Linux-x86_64-304.60.run
```
```
./NVIDIA-Linux-x86_64-304.60.run
```
```
nvidia-xconfig
```

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Dell"
    ModelName      "U2711"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
EndSection

```
aptitude install chromium
```

aptitude install lightdm lightdm-gtk-greeter

echo "/usr/sbin/lightdm" > /etc/X11/default-display-manager

SysOp user

```
adduser --gid 100 sysop
```
```
mkdir /home/sysop/tmp
```

ln -fs /home/sysop/tmp /home/sysop/.cache

```
nano /etc/X11/Xsession
```

ERRFILE=$HOME/tmp/.xsession-errors

```
nano /etc/fstab
```

# /etc/fstab
#
# <file system>           <dir>           <type> <options>                    <dump> <pass>

tmpfs                     /home/sysop/tmp tmpfs  size=2048M                   0      0

XEN

Deployment

```
aptitude install xen-linux-system-amd64
```

aptitude install xen-hypervisor-4.1-amd64

```
aptitude install xen-tools
```

Append Boot Manager

Copy fresh files

ln -s /usr/lib/syslinux/mboot.c32 /boot/syslinux/mboot.c32

cp /mnt/boot/xen-4.1-amd64.gz /boot/Debian/

cp /mnt/boot/vmlinuz-3.2.0-3-amd64 /boot/Debian/

cp /mnt/boot/initrd.img-3.2.0-3-amd64 /boot/Debian/

ln -s /boot/Debian/xen-4.1-amd64.gz /boot/Debian/xen.gz

ln -s /boot/Debian/vmlinuz-3.2.0-3-amd64 /boot/Debian/vmlinuz

ln -s /boot/Debian/initrd.img-3.2.0-3-amd64 /boot/Debian/initrd.img

SysLinux

```
nano /boot/syslinux/syslinux.cfg
```

LABEL xen
	MENU LABEL Debian ^Xen
	KERNEL mboot.c32
	APPEND ../Debian/xen.gz dom0_mem=512M,max:512M dom0_max_vcpus=1-2 dom0_vcpus_pin=1 --- ../Debian/vmlinuz root=/dev/sda3 ro quiet elevator=noop --- ../Debian/initrd.img

Reboot to XEN

```
shutdown -r now
```

Testing

```
xentop
```

xentop - 14:55:16   Xen 4.1.3
1 domains: 1 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
Mem: 6282360k total, 5093488k used, 1188872k free    CPUs: 8 @ 3210MHz
      NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS   VBD_OO   VBD_RD   VBD_WR  VBD_RSECT  VBD_WSECT SSID
  Domain-0 -----r        491    1.7    5020324   79.9   no limit       n/a     8    0        0        0    0        0        0        0          0          0 0



  Delay  Networks  vBds  Tmem  VCPUs  Repeat header  Sort order  Quit

Virtual Machine Manager

First VM

Prepare the VM directory

```
ifup xenbr0
```
```
brctl show
```
```
cd /vm
```
```
mkdir XEN
```
```
chgrp users XEN
```
```
chmod g+w XEN
```
```
cd
```
```
nano /etc/xen-tools/xen-tools.conf
```

dir = /vm/XEN

Create a Debian VM

xen-create-image --hostname VPC1 --ip 192.168.1.201 --vcpus 2 --dist wheezy

...
General Information
--------------------
Hostname       :  VPC1
Distribution   :  wheezy
Mirror         :  http://ftp.fr.debian.org/debian
Partitions     :  swap            128Mb (swap)
                  /               4Gb   (ext3)
Image type     :  sparse
Memory size    :  128Mb
Kernel path    :  /boot/vmlinuz-3.2.0-3-amd64
Initrd path    :  /boot/initrd.img-3.2.0-3-amd64
...
Logfile produced at:
	 /var/log/xen-tools/VPC1.log

Installation Summary
---------------------
Hostname        :  VPC1
Distribution    :  wheezy
IP-Address(es)  :  192.168.1.201 
RSA Fingerprint :  07:04:0e:08:0c:01:08:0b:0c:03:09:07:00:08:01:02
Root Password   :  xXxXxXxX

Define Video & Audio features

```
nano /etc/xen/VPC1.cfg
```

#
#  Graphics and Audio
#
stdvga      = '1'
videoram    = '16'

Start the new VM

```
xm create /etc/xen/VPC1.cfg
```

Using config file "/etc/xen/VPC1.cfg".
Started domain VPC1 (id=3)

List any running VM

```
xm list
```

Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0  4902     8     r-----    101.5
VPC1                                         3   128     2     -b----      2.4

Take control of the VM

Using the console (press CTRL+] to exit)

```
xm console 3
```

Using ssh to remotely connect

```
ssh root@VPC1
```

Windowing

Inside the VM, configure an Internet box

```
aptitude install xorg
```
```
dpkg-reconfigure x11-common
```
```
aptitude install dbus
```
```
aptitude install twm
```

echo RandomPlacement >>  /etc/X11/twm/system.twmrc

echo 'NoTitle { chromium }' >>  /etc/X11/twm/system.twmrc

```
aptitude install chromium
```
```
adduser --gid 100 cyring
```
```
exit
```

Reconnect as a regular user

```
ssh cyring:VPC1
```
```
echo "chromium &" > .xinitrc
```
```
echo "exec twm" >> .xinitrc
```
```
startx
```

Stop the VM

Nicely shut down the VM

```
xm shutdown 3
```

Remove the VM from the managed environment.

```
xm delete VPC1
```

Lost password !

Mount the VM filesystem

mount /vm/XEN/domains/VPC1/disk.img /mnt

```
chroot /mnt
```

Inside the VM

```
passwd
```
```
exit
```

Back to back

```
umount /vm/XEN/domains/VPC1/disk.img
```

Virt-Manager GUI

```
aptitude install virt-manager
```
```
# usermod -a -G libvirt sysop
```
```
mkdir -p /vm/XEN/libvirt/images
```
```
virsh pool-edit default
```

    <path>/vm/XEN/libvirt/images</path>

Pool default XML configuration edited.

```
mkdir -p /vm/XEN/libvirt/qemu/dump
```
```
nano /etc/libvirt/qemu.conf
```

auto_dump_path = "/vm/XEN/libvirt/qemu/dump"

```
nano /etc/xen/xend-config.sxp
```

(xend-unix-server yes)

virt-manager & Debian Wheezy packages are broken : some paths to libraries are invalid

```
# mkdir -p /usr/lib64/xen/bin
```

# ln -s /usr/lib/xen-4.1/bin/qemu-dm /usr/lib64/xen/bin/qemu-dm

# ln -s /usr/lib/xen-4.1 /usr/lib/xen-default

```
service xen restart
```
```
virt-manager
```

@@ Line 1: / Line 1: @@
-==== Partition ====
+== Installation ==
-<syntaxhighlight lang="bash">
+=== Initialization ===
-# fdisk /dev/sda
+Context:
+# Create a SSD partition, number 3, formatted with a 6 GB Ext4 file system.
+# Attach an existing HDD partition named /vm to store the virtual machines.
+==== Partitioning ====
+<syntaxhighlight lang="bash" line start="1">
+fdisk /dev/sda
 </syntaxhighlight>
 <pre>
 n 3 [enter] +6G
 </pre>
-==== Format ====
-<syntaxhighlight lang="bash">
+==== Formatting ====
-# mkfs.ext4 -E discard -L DEBIAN /dev/sda3
+<syntaxhighlight lang="bash" line start="2">
-# mount /dev/disk/by-label/DEBIAN /mnt
+mkfs.ext4 -E discard -L DEBIAN /dev/sda3
+mount /dev/disk/by-label/DEBIAN /mnt
 </syntaxhighlight>
-==== Installation ====
-<syntaxhighlight lang="bash">
+=== ArchLinux as a source ===
-# pacman -S debootstrap
+<syntaxhighlight lang="bash" line start="1">
-# debootstrap --arch ARCH wheezy /mnt http://ftp.fr.debian.org/debian
+pacman -S abs
-# LANG=C chroot /mnt /bin/bash
+pacman -S base-devel
-# export TERM=xterm-color
+abs
-# cd /dev
+mkdir /tmp/debootstrap
-# MAKEDEV generic
+cd /tmp/debootstrap
+wget https://aur.archlinux.org/packages/de/debootstrap/PKGBUILD
+makepkg -s
+pacman -U debootstrap*
 </syntaxhighlight>
-==== Configuration ====
+=== Debian as a host ===
-===== File Systems =====
+<syntaxhighlight lang="bash" line start="1">
-<syntaxhighlight lang="bash">
+debootstrap --arch=amd64 wheezy /mnt http://ftp.fr.debian.org/debian
-# nano /etc/fstab
+LANG=C chroot /mnt /bin/bash
+export TERM=xterm-color
+cd /dev
+MAKEDEV generic
+cd /
+mkdir /vm
+</syntaxhighlight>
+== Configuration ==
+=== Filesystems ===
+<syntaxhighlight lang="bash" line start="1">
+nano /etc/fstab
 </syntaxhighlight>
 <pre>
 # /etc/fstab
 #
-# <file system> <dir>    <type> <options>                           <dump> <pass>
+# <file system>           <dir>    <type> <options>                           <dump> <pass>
-/dev/sda3       /        ext4   discard,noatime,nodiratime,defaults 0      1
-proc            /proc    proc   defaults                            0      0
+/dev/disk/by-label/DEBIAN /        ext4   discard,noatime,nodiratime,defaults 0      1
-devpts          /dev/pts devpts defaults                            0      0
-shm             /dev/shm tmpfs  nodev,nosuid                        0      0
+proc                      /proc    proc   defaults                            0      0
-tmpfs           /tmp     tmpfs  size=2048M                          0      0
+devpts                    /dev/pts devpts defaults                            0      0
-tmpfs           /var/log tmpfs  size=64M                            0      0
+shm                       /dev/shm tmpfs  nodev,nosuid                        0      0
+tmpfs                     /tmp     tmpfs  size=2048M                          0      0
+tmpfs                     /var/log tmpfs  size=64M                            0      0
+/dev/disk/by-label/VM     /vm      ext4   defaults                            0      0
 </pre>
-===== Network =====
-<syntaxhighlight lang="bash">
+=== Network ===
-# nano /etc/network/interfaces
+<syntaxhighlight lang="bash" line start="1">
+nano /etc/network/interfaces
 </syntaxhighlight>
 <pre>
-auto lo
+auto lo eth0 xenbr0
 iface lo inet loopback
-auto eth0
 iface eth0 inet static
      address 192.168.1.101
@@ Line 50: / Line 73: @@
      netmask 255.255.255.0
      gateway 192.168.1.1
-iface br0 inet static
+iface xenbr0 inet static
      bridge_ports none
      address 192.168.1.199
@@ Line 57: / Line 80: @@
      gateway 192.168.1.1
 </pre>
-<syntaxhighlight lang="bash">
+<syntaxhighlight lang="bash" line start="2">
-# nano /etc/resolv.conf
+nano /etc/resolv.conf
 </syntaxhighlight>
 <pre>
 nameserver 192.168.1.1
 </pre>
-<syntaxhighlight lang="bash">
+<syntaxhighlight lang="bash" line start="3">
-# echo XEN > /etc/hostname
+echo XEN > /etc/hostname
-# nano /etc/hosts
+nano /etc/hosts
 </syntaxhighlight>
 <pre>
@@ Line 71: / Line 94: @@
 .0.0.1	XEN
 </pre>
-===== Kernel =====
-<syntaxhighlight lang="bash">
+=== Kernel ===
-# nano /etc/modprobe.d/blacklist.conf
+<syntaxhighlight lang="bash" line start="1">
+nano /etc/modprobe.d/blacklist.conf
 </syntaxhighlight>
 <pre>
@@ Line 80: / Line 104: @@
 blacklist bluetooth
 </pre>
-==== Packages ====
+=== Packages ===
-===== Debian =====
+<syntaxhighlight lang="bash" line start="1">
-<syntaxhighlight lang="bash">
+nano /etc/apt/sources.list
-# nano /etc/apt/sources.list
 </syntaxhighlight>
 <pre>
 deb http://ftp.fr.debian.org/debian wheezy main non-free
 </pre>
-===== Localization =====
+<syntaxhighlight lang="bash" line start="2">
-<syntaxhighlight lang="bash">
+aptitude update
-# aptitude update
-# aptitude install locales
-# dpkg-reconfigure locales
-# aptitude install console-data
-# dpkg-reconfigure console-data
-# aptitude install xen-linux-system-amd64
 </syntaxhighlight>
-===== XEN =====
+=== Localization ===
-<syntaxhighlight lang="bash">
+<syntaxhighlight lang="bash" line start="1">
-# exit
+aptitude install locales
-# ln -s /usr/lib/syslinux/mboot.c32 /boot/syslinux/mboot.c32
+dpkg-reconfigure locales
-# mkdir /boot/Debian
+aptitude install console-data
-# cp /mnt/boot/xen-4.1-amd64.gz /boot/Debian/
+dpkg-reconfigure console-data
-# cp /mnt/boot/vmlinuz-3.2.0-3-amd64 /boot/Debian/
+</syntaxhighlight>
-# cp /mnt/boot/initrd.img-3.2.0-3-amd64 /boot/Debian/
+=== Defaults ===
-# ln -s /boot/Debian/xen-4.1-amd64.gz /boot/Debian/xen.gz
+==== Locale ====
-# ln -s /boot/Debian/vmlinuz-3.2.0-3-amd64 /boot/Debian/vmlinuz
+<syntaxhighlight lang="bash" line start="1">
-# ln -s /boot/Debian/vmlinuz-3.2.0-3-amd64 /boot/Debian/initrd.img
+nano /etc/default/locale
-# nano /boot/syslinux/syslinux.cfg
 </syntaxhighlight>
-==== Boot Manager ====
 <pre>
+LANG=en_US.UTF-8
+</pre>
+==== Keyboard ====
+<syntaxhighlight lang="bash" line start="1">
+nano /etc/default/keyboard
+</syntaxhighlight>
+<pre>
+XKBMODEL="pc105"
+XKBLAYOUT="fr"
+</pre>
+==== tmp filesystem ====
+<syntaxhighlight lang="bash" line start="1">
+nano /etc/default/tmpfs
+</syntaxhighlight>
+<pre>
+RAMTMP=yes
+</pre>
+==== HDD temperature ====
+<syntaxhighlight lang="bash" line start="1">
+nano /etc/default/tmpfs
+</syntaxhighlight>
+<pre>
+RUN_DAEMON="true"
+DISKS="/dev/sdb"
+</pre>
+==== rcS ====
+<syntaxhighlight lang="bash" line start="1">
+nano /etc/default/rcS
+</syntaxhighlight>
+<pre>
+TMPTIME=-1
+</pre>
+=== Boot Manager ===
+==== SysLinux ====
+<syntaxhighlight lang="bash" line start="1">
+exit
+mkdir /boot/Debian
+cp /mnt/boot/vmlinuz-3.2.0-3-amd64 /boot/Debian/
+cp /mnt/boot/initrd.img-3.2.0-3-amd64 /boot/Debian/
+ln -s /boot/Debian/vmlinuz-3.2.0-3-amd64 /boot/Debian/vmlinuz
+ln -s /boot/Debian/initrd.img-3.2.0-3-amd64 /boot/Debian/initrd.img
+nano /boot/syslinux/syslinux.cfg
+</syntaxhighlight>
+<small><pre>
 LABEL debian
 	MENU LABEL De^bian Linux
@@ Line 117: / Line 176: @@
 	APPEND root=/dev/sda3 ro quiet elevator=noop nmi_watchdog=0 vga=0
 	INITRD ../Debian/initrd.img
+</pre></small>
+==== Reboot to Debian ====
+<syntaxhighlight lang="bash" line start="1">
+shutdown -r now
+</syntaxhighlight>
+=== Xorg ===
+<syntaxhighlight lang="bash" line start="1">
+aptitude install xfce4
+wget http://us.download.nvidia.com/XFree86/Linux-x86_64/304.60/NVIDIA-Linux-x86_64-304.60.run
+chmod +x NVIDIA-Linux-x86_64-304.60.run
+./NVIDIA-Linux-x86_64-304.60.run
+nvidia-xconfig
+</syntaxhighlight>
+<pre>
+Section "Monitor"
+    Identifier     "Monitor0"
+    VendorName     "Dell"
+    ModelName      "U2711"
+    Option         "DPMS"
+EndSection
+Section "Device"
+    Identifier     "Device0"
+    Driver         "nvidia"
+    VendorName     "NVIDIA Corporation"
+EndSection
+</pre>
+<syntaxhighlight lang="bash" line start="6">
+aptitude install chromium
+aptitude install lightdm lightdm-gtk-greeter
+echo "/usr/sbin/lightdm" > /etc/X11/default-display-manager
+</syntaxhighlight>
+=== SysOp user ===
+<syntaxhighlight lang="bash" line start="1">
+adduser --gid 100 sysop
+mkdir /home/sysop/tmp
+ln -fs /home/sysop/tmp /home/sysop/.cache
+nano /etc/X11/Xsession
+</syntaxhighlight>
+<pre>
+ERRFILE=$HOME/tmp/.xsession-errors
+</pre>
+<syntaxhighlight lang="bash" line start="5">
+nano /etc/fstab
+</syntaxhighlight>
+<pre>
+# /etc/fstab
+#
+# <file system>           <dir>           <type> <options>                    <dump> <pass>
+tmpfs                     /home/sysop/tmp tmpfs  size=2048M                   0      0
+</pre>
+== XEN ==
+=== Deployment ===
+<syntaxhighlight lang="bash" line start="1">
+aptitude install xen-linux-system-amd64
+aptitude install xen-hypervisor-4.1-amd64
+aptitude install xen-tools
+</syntaxhighlight>
+=== Append Boot Manager ===
+==== Copy fresh files ====
+<syntaxhighlight lang="bash" line start="1">
+ln -s /usr/lib/syslinux/mboot.c32 /boot/syslinux/mboot.c32
+cp /mnt/boot/xen-4.1-amd64.gz /boot/Debian/
+cp /mnt/boot/vmlinuz-3.2.0-3-amd64 /boot/Debian/
+cp /mnt/boot/initrd.img-3.2.0-3-amd64 /boot/Debian/
+ln -s /boot/Debian/xen-4.1-amd64.gz /boot/Debian/xen.gz
+ln -s /boot/Debian/vmlinuz-3.2.0-3-amd64 /boot/Debian/vmlinuz
+ln -s /boot/Debian/initrd.img-3.2.0-3-amd64 /boot/Debian/initrd.img
+</syntaxhighlight>
+==== SysLinux ====
+<syntaxhighlight lang="bash" line start="1">
+nano /boot/syslinux/syslinux.cfg
+</syntaxhighlight>
+<small><pre>
 LABEL xen
 	MENU LABEL Debian ^Xen
 	KERNEL mboot.c32
-	APPEND ../Debian/xen.gz --- ../Debian/vmlinuz root=/dev/sda3 ro quiet elevator=noop nmi_watchdog=0 vga=0 --- ../Debian/initrd.img
+	APPEND ../Debian/xen.gz dom0_mem=512M,max:512M dom0_max_vcpus=1-2 dom0_vcpus_pin=1 --- ../Debian/vmlinuz root=/dev/sda3 ro quiet elevator=noop --- ../Debian/initrd.img
+</pre></small>
+=== Reboot to XEN ===
+<syntaxhighlight lang="bash" line start="1">
+shutdown -r now
+</syntaxhighlight>
+=== Testing ===
+<syntaxhighlight lang="bash" line start="1">
+xentop
+</syntaxhighlight>
+<small><pre>
+xentop - 14:55:16   Xen 4.1.3
+domains: 1 running, 0 blocked, 0 paused, 0 crashed, 0 dying, 0 shutdown
+Mem: 6282360k total, 5093488k used, 1188872k free    CPUs: 8 @ 3210MHz
+      NAME  STATE   CPU(sec) CPU(%)     MEM(k) MEM(%)  MAXMEM(k) MAXMEM(%) VCPUS NETS NETTX(k) NETRX(k) VBDS   VBD_OO   VBD_RD   VBD_WR  VBD_RSECT  VBD_WSECT SSID
+  Domain-0 -----r        491    1.7    5020324   79.9   no limit       n/a     8    0        0        0    0        0        0        0          0          0 0
+  Delay  Networks  vBds  Tmem  VCPUs  Repeat header  Sort order  Quit
 </pre>
+</small>
+=== Virtual Machine Manager ===
+==== First VM ====
+* Prepare the VM directory
+<syntaxhighlight lang="bash" line start="1">
+ifup xenbr0
+brctl show
+cd /vm
+mkdir XEN
+chgrp users XEN
+chmod g+w XEN
+cd
+nano /etc/xen-tools/xen-tools.conf
+</syntaxhighlight>
+<pre>
+dir = /vm/XEN
+</pre>
+===== Create a Debian VM =====
+<syntaxhighlight lang="bash" line start="1">
+xen-create-image --hostname VPC1 --ip 192.168.1.201 --vcpus 2 --dist wheezy
+</syntaxhighlight>
+<small><pre>
+...
+General Information
+--------------------
+Hostname       :  VPC1
+Distribution   :  wheezy
+Mirror         :  http://ftp.fr.debian.org/debian
+Partitions     :  swap            128Mb (swap)
+                  /               4Gb   (ext3)
+Image type     :  sparse
+Memory size    :  128Mb
+Kernel path    :  /boot/vmlinuz-3.2.0-3-amd64
+Initrd path    :  /boot/initrd.img-3.2.0-3-amd64
+...
+Logfile produced at:
+	 /var/log/xen-tools/VPC1.log
+Installation Summary
+---------------------
+Hostname        :  VPC1
+Distribution    :  wheezy
+IP-Address(es)  :  192.168.1.201
+RSA Fingerprint :  07:04:0e:08:0c:01:08:0b:0c:03:09:07:00:08:01:02
+Root Password   :  xXxXxXxX
+</pre></small>
+* Define Video & Audio features
+<syntaxhighlight lang="bash" line start="2">
+nano /etc/xen/VPC1.cfg
+</syntaxhighlight>
+<pre>
+#
+#  Graphics and Audio
+#
+stdvga      = '1'
+videoram    = '16'
+</pre>
+===== Start the new VM =====
+<syntaxhighlight lang="bash" line start="1">
+xm create /etc/xen/VPC1.cfg
+</syntaxhighlight>
+<small><pre>
+Using config file "/etc/xen/VPC1.cfg".
+Started domain VPC1 (id=3)
+</pre></small>
+===== List any running VM =====
+<syntaxhighlight lang="bash" line start="1">
+xm list
+</syntaxhighlight>
+<small><pre>
+Name                                        ID   Mem VCPUs      State   Time(s)
+Domain-0                                     0  4902     8     r-----    101.5
+VPC1                                         3   128     2     -b----      2.4
+</pre></small>
+===== Take control of the VM =====
+* Using the console (''press'' CTRL+] ''to exit'')
+<syntaxhighlight lang="bash" line start="1">
+xm console 3
+</syntaxhighlight>
+* Using ssh to remotely connect
+<syntaxhighlight lang="bash" line start="2">
+ssh root@VPC1
+</syntaxhighlight>
+===== Windowing =====
+* Inside the VM, configure an Internet box
+<syntaxhighlight lang="bash" line start="1">
+aptitude install xorg
+dpkg-reconfigure x11-common
+aptitude install dbus
+aptitude install twm
+echo RandomPlacement >>  /etc/X11/twm/system.twmrc
+echo 'NoTitle { chromium }' >>  /etc/X11/twm/system.twmrc
+aptitude install chromium
+adduser --gid 100 cyring
+exit
+</syntaxhighlight>
+* Reconnect as a regular user
+<syntaxhighlight lang="bash" line start="1">
+ssh cyring:VPC1
+echo "chromium &" > .xinitrc
+echo "exec twm" >> .xinitrc
+startx
+</syntaxhighlight>
+===== Stop the VM =====
+* Nicely shut down the VM
+<syntaxhighlight lang="bash" line start="1">
+xm shutdown 3
+</syntaxhighlight>
+* Remove the VM from the managed environment.
+<syntaxhighlight lang="bash" line start="2">
+xm delete VPC1
+</syntaxhighlight>
+===== Lost password ! =====
+* Mount the VM filesystem
+<syntaxhighlight lang="bash" line start="1">
+mount /vm/XEN/domains/VPC1/disk.img /mnt
+chroot /mnt
+</syntaxhighlight>
+* ''Inside the VM''
+<syntaxhighlight lang="bash" line start="3">
+passwd
+exit
+</syntaxhighlight>
+* ''Back to back''
+<syntaxhighlight lang="bash" line start="5">
+umount /vm/XEN/domains/VPC1/disk.img
+</syntaxhighlight>
+==== Virt-Manager GUI ====
+<syntaxhighlight lang="bash" line start="1">
+aptitude install virt-manager
+# usermod -a -G libvirt sysop
+mkdir -p /vm/XEN/libvirt/images
+virsh pool-edit default
+</syntaxhighlight>
+<pre>
+    <path>/vm/XEN/libvirt/images</path>
+</pre>
+:''Pool default XML configuration edited.''
+<syntaxhighlight lang="bash" line start="5">
+mkdir -p /vm/XEN/libvirt/qemu/dump
+nano /etc/libvirt/qemu.conf
+</syntaxhighlight>
+<pre>
+auto_dump_path = "/vm/XEN/libvirt/qemu/dump"
+</pre>
+<syntaxhighlight lang="bash" line start="7">
+nano /etc/xen/xend-config.sxp
+</syntaxhighlight>
+<pre>
+(xend-unix-server yes)
+</pre>
+* virt-manager & Debian Wheezy packages are broken : some paths to libraries are invalid
+<syntaxhighlight lang="bash" line start="8">
+# mkdir -p /usr/lib64/xen/bin
+# ln -s /usr/lib/xen-4.1/bin/qemu-dm /usr/lib64/xen/bin/qemu-dm
+# ln -s /usr/lib/xen-4.1 /usr/lib/xen-default
+service xen restart
+virt-manager
+</syntaxhighlight>

Xen

From Wiki.cyring.fr

Latest revision as of 19:38, 23 October 2012

Contents

Installation

Initialization

Partitioning

Formatting

ArchLinux as a source

Debian as a host

Configuration

Filesystems

Network

Kernel

Packages

Localization

Defaults

Locale

Keyboard

tmp filesystem

HDD temperature

rcS

Boot Manager

SysLinux

Reboot to Debian

Xorg

SysOp user

XEN

Deployment

Append Boot Manager

Copy fresh files

SysLinux

Reboot to XEN

Testing

Virtual Machine Manager

First VM

Create a Debian VM

Start the new VM

List any running VM

Take control of the VM

Windowing

Stop the VM

Lost password !

Virt-Manager GUI

Views

Personal tools

Navigation

Search

Toolbox