Installation XEN : Différence entre versions
(→Restauration d'un serveur depuis sauvegarde lvm) |
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| Ligne 90 : | Ligne 90 : | ||
Finally modify your domU config file or move domU.resize.img over domU.img. | Finally modify your domU config file or move domU.resize.img over domU.img. | ||
| − | == | + | == Bonding == |
| − | + | Setup Bonding Ethernet on Debian with a 2.6 kernel | |
| − | + | ||
| − | + | To use Bonding Ethernet for High-Availability (fail-over) on Debian (Woody, Sarge or Sid with a 2.4.x kernel) you need to: | |
| − | + | ||
| − | + | install package ifenslave-2.6.To install this package follow this command | |
| − | + | ||
| − | + | #apt-get install ifenslave-2.6 | |
| − | + | ||
| − | + | make sure the real NICs kernel modules are loaded automatically | |
| − | + | ||
| − | + | edit /etc/network/interfaces to look like this: | |
| − | + | ||
| − | + | iface bond0 inet static | |
| − | + | address 10.31.1.5 | |
| − | + | netmask 255.255.255.0 | |
| − | + | network 10.31.1.0 | |
| − | + | gateway 10.31.1.254 | |
| − | + | up /sbin/ifenslave bond0 eth0 | |
| − | + | up /sbin/ifenslave bond0 eth1 | |
| − | + | ||
| − | + | comment or borrow the lines referring to your real NICs in the same file | |
| − | + | ||
| − | + | add the following lines to your /etc/modprobe.d/arch/i386: | |
| − | + | ||
| − | + | alias bond0 bonding | |
| − | + | ||
| − | + | options bonding mode=1 miimon=100 downdelay=200 updelay=200 | |
| − | |||
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Version du 5 janvier 2010 à 09:17
Sommaire
Installation du Dom0
Install Debian par defaut avec lvm, decocher toutes les options lors de l'install des paquets: nom du lvm : lvm1 (pour les scripts)
Installer ssh
apt-get install ssh
Installer le systeme xen :
apt-get install linux-image-2.6-xen-686 xen-hypervisor-3.0.3-1-i386-pae xen-ioemu-3.0.3-1 xen-tools xen-utils-3.0.3-1 \ xen-utils-common linux-image-2.6.18-6-xen-686 xen-linux-system-2.6.18-6-xen-686 bridge-utils libc6-xen
Configurer le bridge :
vim /etc/xen/xend-config.sxp
Decommenter :
(network-script network-bridge)
Configurer les outils :
vim /etc/xen-tools/xen-tools.conf
lvm = lvm1 debootstrap = 1 dist = etch gateway = 193.49.133.1 netmask = 255.255.255.0 passwd = 1 kernel = /boot/vmlinuz-2.6.18-6-xen-686 initrd = /boot/initrd.img-2.6.18-6-xen-686 mirror = http://ftp.fr.debian.org/debian/
Configurer le partage nfs :
mkdir /save
Ajouter dans la fstab :
erasme:/save/domU /save nfs soft,timeo=5,intr,rsize=8192,wsize=8192 0 0
redemarrer le serveur qui va booter sur xen
Liste des serveurs virtuels
pour voir les serveurs en cours sur un hôte :
# xm list
| Nom du serveur | services | test/prod | cronos | saturne | Bond |
|---|---|---|---|---|---|
| ldap | ldap translucent | prod | X | ||
| ldap_relay | relais de bordeau | prod | X | ||
| sympa | listes de diffusion | prod | X | ||
| vpn | acess VPn | prod | X | ||
| hades | supervision | prod | X | ||
| pluton | OCS-ng + GLPI | prod | X |
Commandes principales
Les fichiers d'images sont dans /home/xen/domains
pour démarrer un serveur :
# xm create nom_du_serveur.cfg
pour le reste :
# xm
vous donnera les autres commandes dispos
Augmenter la taille d'un serveur :
first create an extra image with the desired size (here 1GB) that will be added to the current image
# dd if=/dev/zero of=extra.img bs=1M count=1024 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 5.09034 seconds, 211 MB/s
Make sure domU is not running. Then just add extra.img to your domU image file (here domU.img). Yes just as simple Very Happy
# cat domU.img extra.img > domU.resize.img
You also need to enlarge your filesystem. I've test it with ext3 but not with ReiserFS - it seems ReiserFS needs resize_reiserfs instead of resize2fs -.
# fsck.ext3 -f disk_resize.img # resize2fs domU.resize.img
Finally modify your domU config file or move domU.resize.img over domU.img.
Bonding
Setup Bonding Ethernet on Debian with a 2.6 kernel
To use Bonding Ethernet for High-Availability (fail-over) on Debian (Woody, Sarge or Sid with a 2.4.x kernel) you need to:
install package ifenslave-2.6.To install this package follow this command
#apt-get install ifenslave-2.6
make sure the real NICs kernel modules are loaded automatically
edit /etc/network/interfaces to look like this:
iface bond0 inet static address 10.31.1.5 netmask 255.255.255.0 network 10.31.1.0 gateway 10.31.1.254 up /sbin/ifenslave bond0 eth0 up /sbin/ifenslave bond0 eth1
comment or borrow the lines referring to your real NICs in the same file
add the following lines to your /etc/modprobe.d/arch/i386:
alias bond0 bonding
options bonding mode=1 miimon=100 downdelay=200 updelay=200
