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Libvirt (ancien) » Historique » Version 59

Mehdi Abaakouk, 10/04/2017 20:42

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h1. Libvirt
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h2. /!\ tetaneutral utilise Openstack maintenant /!\
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https://chiliproject.tetaneutral.net/projects/tetaneutral/wiki/Openstack_Management_TTNN
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h2. Resources/Liens
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* Virtualisation du routage IPv4 pour les VM http://lists.tetaneutral.net/pipermail/technique/2013-April/000810.html
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* libvirt
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http://builder.virt-tools.org/artifacts/libvirt-virshcmdref/html/index.html
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http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/chap-Virtualization-Managing_guests_with_virsh.html
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* virt-install et preseed sans server web et pxe:
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http://honk.sigxcpu.org/con/Preseeding_Debian_virtual_machines_with_virt_install.html
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h2. Backup d'un VM n7
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sur h2:
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<pre>
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# VM=XXX.gz; cd /backup/libvirt-n7-vm-raw/20140319/ ; if [ ! -f ${VM} ]; then socat -u tcp4-listen:50555 - > $VM ; zcat $VM | md5sum -; du -hs *; else echo $VM already present;fi
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</pre>
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sur la machine n7:
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<pre>
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# virsh shutdown XXX
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# LV=XXX; cat /dev/raid5/$LV | gzip --fast|socat -u - tcp4:h2.tetaneutral.net:50555;md5sum /dev/raid5/$LV
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</pre>
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h2. Installation VM sans bridge avec routage static (en /32 pour l'ipv4)
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Note: tous les fichiers utilisés et créés ne sont peut être pas à jour, voir ici pour les dernières version: http://git.tetaneutral.net/libvirt.git/
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Le répertoire /etc/libvirt/ttnn cité plustard est géré dans ce git.
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h3. Configuration de la libvirt
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On créé un réseau libvirt qui fait rien (déjà fait sur n7):
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<pre>
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cat > libvirt_dump_network.xml <<EOF
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<network ipv6='yes'>
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<name>dump-net</name>
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<bridge name='dumpbr0' />
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</network>
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EOF
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virsh net-define libvirt_dump_network.xml
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virsh net-autostart dump-net
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virsh net-start dump-net
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</pre>
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On créé un hook libvirt (déjà fait sur n7):
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<pre>
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mkdir -p /etc/libvirt/ttnn/hooks
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ln -s /etc/libvirt/ttnn/hooks /etc/libvirt/hooks
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vi /etc/libvirt/hooks/qemu
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----8<--------------->8----
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#!/bin/bash
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name="$1"
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operation="$2"
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suboperation="$3"
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[ "$operation" != "start" ] && exit 0
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[ "$suboperation" != "begin" ] && exit 0
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# get interface from the libvirt xml
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interface=$(cat - | sed -ne "/vnet/s/.*dev='\([^']*\)'.*/\1/gp")
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[ -f /etc/libvirt/ttnn/${name}.conf ] && source /etc/libvirt/ttnn/${name}.conf
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[ "$ip" -o "$ip6" ] && brctl delif dumpbr0 $interface
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[ "$ip" ] && ip route add $ip/32 dev $interface
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[ "$ip6" ] && ip route add $ip6/56 dev $interface
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[ "$ip6" ] && ip -6 addr add fe80::31/64 dev $interface
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exit 0
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----8<--------------->8----
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</pre>
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h3. Preparation de l'installer
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Pour une squeeze on met à jour virtinst  (déjà fait sur n7):
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<pre>
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wget http://ftp.us.debian.org/debian/pool/main/v/virtinst/virtinst_0.600.3-3_all.deb
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dpkg -i virtinst_0.600.3-3_all.deb
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</pre>
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On install le preseed.cfg attaché à la page dans /etc/libvirt/preseed.cfg  (déjà fait sur n7)
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h4. Installation d'une VM
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Creation du disk (déjà fait sur n7):
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<pre>
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lvcreate -n picttn -L 50G /dev/raid5
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</pre>
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Configuration du routage static:
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<pre>
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vi /etc/libvirt/ttnn/picttn.conf 
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# le /32 ipv4
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ip="91.224.148.252"
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# le /56 ipv6
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ip6="2a01:6600:8080:FC00::"
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</pre>
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Lancement de l'installation via le réseau natter de libvirt
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<pre>
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virt-install -n picttn -r 2048 --os-type=linux \
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    --autostart \
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    --disk /dev/raid5/picttn,bus=virtio,cache=none,io=native \
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    --network network=default,model=virtio \
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    --nographics \
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    --noreboot \
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    --wait -1 \
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    --location http://ftp.debian.org/debian/dists/wheezy/main/installer-amd64/ \
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    --serial pty \
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    --initrd-inject /etc/libvirt/ttnn/preseed.cfg \
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    --initrd-inject /etc/libvirt/ttnn/picttn.conf \
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    --initrd-inject /etc/libvirt/ttnn/postinstall.sh \
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    --extra-args "console=ttyS0,9600n8 DEBIAN_FRONTEND=text auto priority=critical hostname=picttn domain=le-pic.org"
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</pre>
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Une fois l'installation terminée, on change la conf réseau:
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<pre>
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EDITOR="sed -ie s/default/dump-net/g" virsh edit picttn
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</pre>
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On peux démarrer la VM
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<pre>
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virsh start picttn
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virsh console picttn
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</pre>
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Ensuite on peux se connecte à la VM
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<pre>
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ssh root@2a01:6600:8080:FC00::1
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</pre>
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Le /etc/network/interfaces IPv4 après installation
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<pre>
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iface eth0 inet static
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    address 91.224.148.xxx
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    netmask 32
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    up ip route add 91.224.148.0/32 dev eth0
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    up ip route add default via 91.224.148.0
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iface eth0 inet6 static
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    address 2a01:6600:8080:xx00::1
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    netmask 56
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    gateway fe80::31
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    pre-up /sbin/sysctl -w net.ipv6.conf.eth0.accept_ra=0
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    pre-up /sbin/sysctl -w net.ipv6.conf.eth0.autoconf=0
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</pre>
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h2. Misc
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<H4Mm3r> si tu lance la création de la VM sans avoir créé le disk --disk /vmroot/testnat.qcow2,format=qcow2,size=12,bus=virtio,cache=writeback
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<H4Mm3r> le disk se créé mais dans le XML le format est à RAW
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<H4Mm3r> si tu le créé à l'avance avec qemu-img create -f qcow2
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<H4Mm3r> et que tu lance ta commande --disk /vmroot/testnat.qcow2,format=qcow2
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<guerby> ok donc c'etait bien ça :)
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<guerby> bbl (miam)
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<H4Mm3r> dans le fichier XML le format est à RAW
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<H4Mm3r> il faut en effet dumper un XML, modifier la valeur à QCOW2
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<H4Mm3r> et créer la VM depuis ce XML
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<H4Mm3r> virsh create file.xml
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<H4Mm3r> pourqu'enfin il comprenne que c'est du QCOW...
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<H4Mm3r> et là mon disk fait bien 265ko, mais est détecté comme 12G :D
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h2. HOWTO by H4Mm3r (under contruction)
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h3. Usefull links
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#### Misc
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#OS Type
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http://rhevdup.blogspot.fr/2012/05/list-available-os-types-for-kvm-on-rhel.html
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#Libvirt TTN
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http://chiliproject.tetaneutral.net/projects/tetaneutral/wiki/Libvirt
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#### KVM management
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#Install QEMU KVM + LIBVIRT
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http://www.howtoforge.com/virtualization-with-kvm-on-a-debian-squeeze-server
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#Edit XML file
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http://vladnevzorov.com/2011/02/11/how-to-change-configuration-of-kvm-virtual-machine/
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#Clone a KVM
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https://help.ubuntu.com/community/KVM/CreateGuests#Cloning_a_virtual_machine
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http://linux.die.net/man/1/virt-clone
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#### Network
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#NAT
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http://www.linuxquestions.org/questions/linux-networking-3/kvm-qemu-and-nat-on-the-host-machine-mini-tutorial-697980/
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http://wiki.libvirt.org/page/Networking
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http://libvirt.org/formatnetwork.html#examplesNAT
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https://help.ubuntu.com/community/KVM/Networking
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#Bridge
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http://toast.djw.org.uk/qemu.html
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http://www.mediaonfire.com/en/tech_tips/QEMUNetworking.html (bridge, nat, arp)
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#### Improve performance
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http://blog.bodhizazen.net/linux/improve-kvm-performance/
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http://www.linux-kvm.org/page/Tuning_KVM
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http://www.ezunix.org/index.php?title=Boost_performance_of_KVM_guests
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#### Storage
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http://doc.opensuse.org/products/draft/SLES/SLES-kvm_sd_draft/cha.libvirt.storage.html
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h3. HOWTO
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<pre>
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[H] = Host
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[G] = Guest
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[XML] = XML content
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"command"
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</pre>
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#### Diskfile Storage
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#Create qcow2 disk
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<pre>
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[H] "qemu-img create -f qcow2 /path/to/disk.qcow2 $SIZE" (ex: 20G)
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[H] "chmod +x /path/to/disk.qcow2"
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</pre>
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#Convert raw to qcow2
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<pre>
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[H] "qemu-img convert -O qcow2 disk.img disk.qcow2"
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</pre>
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#Disable cache to improve performance 
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<pre>
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[XML] <driver name='qemu' type='qcow2' cache='none'/>
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</pre>
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#### LVM Storage
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<pre>
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[H] Create "/etc/libvirt/storage/vmdata.xml" file :
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      <pool type="logical">
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        <name>my_pool</name>
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        <source>
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          <device path="/path/to/dev"/>
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        </source>
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        <target>
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          <path>/target/path/path> (LV will be created there)
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        </target>
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      </pool>
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[H] "virsh pool-define /etc/libvirt/storage/my_pool.xml"
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[H] "virsh pool-start my_pool"
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[H] "virsh pool-autostart my_pool"
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[H] "virsh pool-info my_pool"
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[H] "virsh vol-create-as my_pool my_logical_volume 12G"
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[H] You must create a LV to be able to give it to a KVM "virsh vol-create-as my_pool my_vol 12G --format=lvm2"
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</pre>
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h3. Create KVM
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#Bridged with TAP + LVM
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<pre>
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[H] "virt-install -d --hvm --vnc --name=my_kvm --vcpus=4 --cpuset=0-4 --ram 2048 --disk vol=my_pool/my_vol,bus=virtio,cache=none --network bridge=my_bridge,model=virtio -c /path/to/distrib.iso --keymap=fr --os-type=linux --noautoconsole"
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</pre>
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#TAP (if you want to rename the default "vnetX" interface by "tapX"
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<pre>
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[H] "virsh dumpxml my_guest > my_guest.xml
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[H] "virsh undefine my_guest"
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[H] Edit the my_guest.xml file to rename VNETX by TAPX
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[H] "virsh define my_guest.xml"
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[H] "virsh start my_guest"
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</pre>
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#NATed + LVM
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<pre>
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[H] "virt-install -d --hvm --vnc --name=my_kvm --vcpus=4 --cpuset=0-4 --ram 2048 --disk vol=my_pool/my_vol,bus=virtio,cache=none --network network=my_network,model=virtio -c /path/to/distrib.iso --keymap=fr --os-type=linux --noautoconsole"
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</pre>
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#Clone VM
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<pre>
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[H] Create the LVM dest
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[H] Pause the KVM "virsh suspend my_kvm"
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[H] virt-clone -o my_orig_kvm -n my_cloned_kvm -f=/path/to/lvm/dev
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[G] Go and change the hostname and resolv.conf
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</pre>
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h3. Command explanation
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#Bridged with tap
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<pre>
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virt-install -d --hvm --vnc --name=testlvm \
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    --vcpus=4 --cpuset=0-4 \
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    --ram 2048 \ 
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    --disk vol=vmdata/testlvm,bus=virtio,cache=none \
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    --network bridge=br0,model=virtio \
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    -c /data/isos/debian-testing-amd64-netinst.iso \
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    --keymap=fr --os-type=linux --os-variant=debiansqueeze --noautoconsole
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</pre>
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#NATed
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<pre>
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virt-install -d --hvm --vnc --name=testlvm \
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    --vcpus=4 --cpuset=0-4 \
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    --ram 2048 \ 
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    --disk vol=vmdata/testlvm,bus=virtio,cache=none \
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    --network network=frp_network,model=virtio \
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    -c /data/isos/debian-testing-amd64-netinst.iso \
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    --keymap=fr --os-type=linux --os-variant=debiansqueeze --noautoconsole
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</pre>
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[OLD QCOW2]
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<pre>
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[H] "virt-install --connect qemu:///system -n puppetnode1 -r 1024 --vcpus=4 --cpuset=4-7 --disk path=/vmroot/puppetnode1.qcow2 -c /data/isos/debian-6.0.6-amd64-netinst.iso --vnc --keymap=fr --noautoconsole --os-type linux --os-variant debiansqueeze --accelerate --network network=default --hvm"
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[H] "virt-install --connect qemu:///system -n testnat -r 1024 --vcpus=2 --cpuset=2-3 --disk /vmroot/testnat.qcow2,format=qcow2,size=12,bus=virtio,cache=writeback -c /data/isos/debian-6.0.6-amd64-netinst.iso --vnc --keymap=fr --noautoconsole --os-type linux --os-variant debiansqueeze --accelerate --network bridge=br0 --hvm"
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</pre>
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#Start a KVM
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<pre>
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[H] "virsh start my_kvm"
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</pre>
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#Stop node
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<pre>
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[H] Soft : "virsh shutdown my_kvm"
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[H] Hard : "virsh destroy my_kvm"
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</pre>
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#Suppr node del
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<pre>
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[H] "virsh undefine node" (+ remove files)
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</pre>
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#Rename node
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<pre>
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[H] "virsh dumpxml my_kvm > foo.xml"
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[H] <edit foo.xml, change the name, move storage>
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[H] "virsh undefine my_kvm"
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[H] "virsh define foo.xml"
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</pre>
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# Connect to virsh qemu
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<pre>
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[H] "virsh --connect qemu:///system"
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[H] "virsh # help"
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</pre>
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#Start a network
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<pre>
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[H] "virsh net-start my_network"
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</pre>
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#Configure VNC
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<pre>
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[H] Edit /etc/libvirt/qemu.conf and set vnc_listen = "your.ip.addd"
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[H] You need to restart service "/etc/init.d/libvirtd restart"
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[H] "ps aux | grep -i kvm" (find vnc display for your KVM)
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</pre>
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#Connect to a KVM through VNC
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<pre>
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tightvncviewer -compresslevel 7 -encodings "copyrect tight hextile zlib corre rre raw" x.xxx.xxx.xxx:x
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</pre>
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#Keyboard FR for KVM
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<pre>
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[H] "virsh edit my_kvm"
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[XML] <graphics type='vnc' port='-1' autoport='yes' keymap='fr'/>
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</pre>
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#Create your own NAT network
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<pre>
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[H] Create your_nat.xml file :
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[XML] <network>
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  <name>frp_network</name>
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  <forward mode='nat'/>
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  <bridge name='br1' stp='on' delay='0' />
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  <ip address='10.16.42.1' netmask='255.255.255.0'>
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    <dhcp>
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      <range start='10.16.42.2' end='10.16.42.50' />
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    </dhcp>
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  </ip>
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</network>
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[H] "virsh net-define your_nat.xml"
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[H] "virsh net-start your_nat.xml"
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[H] "virsh net-autostart your_nat.xml"
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[XML] Network type "interface type = network, source network=your_nat"
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</pre>
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#IBM advisements to improve performance
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<pre>
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[H] Use LVM (or other direct access to HDD) for VMs storage (from 45 to 3' to install a VM)
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[H] Set the swappiness value to 0 ("echo 0 > /proc/sys/vm/swappiness" && edit "/etc/sysctl.conf" and add "vm.swappiness=0")
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[H] Disable zone_reclaim ("echo 0 > /proc/sys/vm/zone_reclaim_mode" && edit "/etc/sysctl.conf" and add "vm.zone_reclaim_mode=0")
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[H] Enable KSM ("echo 1 > /sys/kernel/mm/ksm/run") and set the check time to 200ms ("echo 200 > /sys/kernel/mm/ksm/sleep_millisecs")
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</pre>
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418 22 Mehdi Abaakouk
419 22 Mehdi Abaakouk
h2. PC velizy
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<pre>
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root@tetaneutral1:~# fdisk /dev/sdb
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Command (m for help): p
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Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
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255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
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Units = sectors of 1 * 512 = 512 bytes
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Sector size (logical/physical): 512 bytes / 512 bytes
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I/O size (minimum/optimal): 512 bytes / 512 bytes
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Disk identifier: 0x9bf0c7df
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   Device Boot      Start         End      Blocks   Id  System
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Command (m for help): n
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Partition type:
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   p   primary (0 primary, 0 extended, 4 free)
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   e   extended
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Select (default p): p
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Partition number (1-4, default 1): 
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Using default value 1
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First sector (2048-3907029167, default 2048): 
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Using default value 2048
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Last sector, +sectors or +size{K,M,G} (2048-3907029167, default 3907029167): 
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Using default value 3907029167
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Command (m for help): n
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Partition type:
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   p   primary (1 primary, 0 extended, 3 free)
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   e   extended
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Select (default p): ^C
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root@tetaneutral1:~# fdisk /dev/sdb
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Command (m for help): n
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Partition type:
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   p   primary (0 primary, 0 extended, 4 free)
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   e   extended
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Select (default p): p
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Partition number (1-4, default 1): 1
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First sector (2048-3907029167, default 2048): 
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Using default value 2048
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Last sector, +sectors or +size{K,M,G} (2048-3907029167, default 3907029167): 
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Using default value 3907029167
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Command (m for help): p
467 22 Mehdi Abaakouk
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Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
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255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
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Units = sectors of 1 * 512 = 512 bytes
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Sector size (logical/physical): 512 bytes / 512 bytes
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I/O size (minimum/optimal): 512 bytes / 512 bytes
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Disk identifier: 0x9bf0c7df
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   Device Boot      Start         End      Blocks   Id  System
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/dev/sdb1            2048  3907029167  1953513560   83  Linux
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Command (m for help): m
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Command action
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   a   toggle a bootable flag
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   b   edit bsd disklabel
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   c   toggle the dos compatibility flag
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   d   delete a partition
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   l   list known partition types
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   m   print this menu
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   n   add a new partition
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   o   create a new empty DOS partition table
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   p   print the partition table
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   q   quit without saving changes
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   s   create a new empty Sun disklabel
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   t   change a partition's system id
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   u   change display/entry units
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   v   verify the partition table
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   w   write table to disk and exit
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   x   extra functionality (experts only)
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Command (m for help): t
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Selected partition 1
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Hex code (type L to list codes): L
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501 22 Mehdi Abaakouk
 0  Empty           24  NEC DOS         81  Minix / old Lin bf  Solaris        
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 1  FAT12           27  Hidden NTFS Win 82  Linux swap / So c1  DRDOS/sec (FAT-
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 2  XENIX root      39  Plan 9          83  Linux           c4  DRDOS/sec (FAT-
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 3  XENIX usr       3c  PartitionMagic  84  OS/2 hidden C:  c6  DRDOS/sec (FAT-
505 22 Mehdi Abaakouk
 4  FAT16 <32M      40  Venix 80286     85  Linux extended  c7  Syrinx         
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 5  Extended        41  PPC PReP Boot   86  NTFS volume set da  Non-FS data    
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 6  FAT16           42  SFS             87  NTFS volume set db  CP/M / CTOS / .
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 7  HPFS/NTFS/exFAT 4d  QNX4.x          88  Linux plaintext de  Dell Utility   
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 8  AIX             4e  QNX4.x 2nd part 8e  Linux LVM       df  BootIt         
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 9  AIX bootable    4f  QNX4.x 3rd part 93  Amoeba          e1  DOS access     
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 a  OS/2 Boot Manag 50  OnTrack DM      94  Amoeba BBT      e3  DOS R/O        
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 b  W95 FAT32       51  OnTrack DM6 Aux 9f  BSD/OS          e4  SpeedStor      
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 c  W95 FAT32 (LBA) 52  CP/M            a0  IBM Thinkpad hi eb  BeOS fs        
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 e  W95 FAT16 (LBA) 53  OnTrack DM6 Aux a5  FreeBSD         ee  GPT            
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 f  W95 Ext'd (LBA) 54  OnTrackDM6      a6  OpenBSD         ef  EFI (FAT-12/16/
516 22 Mehdi Abaakouk
10  OPUS            55  EZ-Drive        a7  NeXTSTEP        f0  Linux/PA-RISC b
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11  Hidden FAT12    56  Golden Bow      a8  Darwin UFS      f1  SpeedStor      
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12  Compaq diagnost 5c  Priam Edisk     a9  NetBSD          f4  SpeedStor      
519 22 Mehdi Abaakouk
14  Hidden FAT16 <3 61  SpeedStor       ab  Darwin boot     f2  DOS secondary  
520 22 Mehdi Abaakouk
16  Hidden FAT16    63  GNU HURD or Sys af  HFS / HFS+      fb  VMware VMFS    
521 22 Mehdi Abaakouk
17  Hidden HPFS/NTF 64  Novell Netware  b7  BSDI fs         fc  VMware VMKCORE 
522 22 Mehdi Abaakouk
18  AST SmartSleep  65  Novell Netware  b8  BSDI swap       fd  Linux raid auto
523 22 Mehdi Abaakouk
1b  Hidden W95 FAT3 70  DiskSecure Mult bb  Boot Wizard hid fe  LANstep        
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1c  Hidden W95 FAT3 75  PC/IX           be  Solaris boot    ff  BBT            
525 22 Mehdi Abaakouk
1e  Hidden W95 FAT1 80  Old Minix      
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Hex code (type L to list codes): 8e
527 22 Mehdi Abaakouk
Changed system type of partition 1 to 8e (Linux LVM)
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Command (m for help): w
530 22 Mehdi Abaakouk
The partition table has been altered!
531 22 Mehdi Abaakouk
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Calling ioctl() to re-read partition table.
533 22 Mehdi Abaakouk
Syncing disks.
534 22 Mehdi Abaakouk
</pre>
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<pre>
536 23 Mehdi Abaakouk
pvcreate /dev/sdb1
537 24 Mehdi Abaakouk
vgcreate vm-velizy /dev/sdb1
538 1 Mehdi Abaakouk
lvcreate -n velizy-vm1 -L 50G vm-velizy
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apt-get install virtinst
540 1 Mehdi Abaakouk
541 25 Mehdi Abaakouk
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/root/preseed.cfg @ http://git.tetaneutral.net/libvirt.git/
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replace the late-command line at the end of the file by:
545 27 Mehdi Abaakouk
d-i preseed/late_command string cp -f /postinstall-velizy.sh /target/; in-target bash /postinstall-velizy.sh
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vmname=velizy-vm1
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ip=192.166.143.24
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virt-install -n $vmname -r 2048 --os-type=linux \
552 25 Mehdi Abaakouk
    --debug \
553 25 Mehdi Abaakouk
    --autostart \
554 25 Mehdi Abaakouk
    --disk /dev/vm-velizy/$vmname,bus=virtio,cache=none,io=native \
555 25 Mehdi Abaakouk
    --network bridge=br0,model=virtio \
556 25 Mehdi Abaakouk
    --nographics \
557 25 Mehdi Abaakouk
    --noreboot \
558 25 Mehdi Abaakouk
    --wait -1 \
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    --location http://ftp.debian.org/debian/dists/wheezy/main/installer-amd64/ \
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    --serial pty \
561 25 Mehdi Abaakouk
    --initrd-inject /root/preseed.cfg \
562 1 Mehdi Abaakouk
    --initrd-inject /root/postinstall-velizy.sh \
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    --extra-args "console=ttyS0,9600n8 DEBIAN_FRONTEND=text auto priority=critical hostname=$vmname domain=tetaneutral.net netcfg/get_ipaddress=$ip netcfg/get_netmask=255.255.252.0 netcfg/get_gateway=192.166.143.254 netcfg/get_nameservers=192.166.143.23 netcfg/disable_dhcp=true" 
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</pre>
566 27 Mehdi Abaakouk
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postinstall-velizy.sh
569 27 Mehdi Abaakouk
<pre>
570 27 Mehdi Abaakouk
#!/bin/bash
571 27 Mehdi Abaakouk
sed -i -e 's/^.*Port.*$/Port 2222/' -e 's/^[# ]*PasswordAuthentication.*$/PasswordAuthenticati
572 27 Mehdi Abaakouk
on no/' /etc/ssh/sshd_config
573 27 Mehdi Abaakouk
574 27 Mehdi Abaakouk
mkdir -p /root/.ssh
575 27 Mehdi Abaakouk
cat > /root/.ssh/authorized_keys  <<EOF
576 27 Mehdi Abaakouk
ssh-dss AAAAB3NzaC1kc3MAAACBAJtnGLvuz4uVD6fnERDxDi/C0UyzwCiKmgNtEessopREYasAX4Gu6Fg10jAyIL5Nuc
577 27 Mehdi Abaakouk
7YDnqj//pOfxNjD7hp99a2ZmkRQgh/ltClxYML9fqhBHgsUCpVse9nOYDHDnDgvXIPRSDUHat2UFpdchHVrFURNLIlZnBz
578 27 Mehdi Abaakouk
tsr+GCDURTV/AAAAFQD9SrBcH49ltaKOm6V5ssCPmgs1SwAAAIAbAvkQ3/tMzzdACO5B9s5Yb3ZuM7XImm0iqufivVf2Xy
579 27 Mehdi Abaakouk
39g8HOBulUsN7eKEGPhVriqNolgIO7q7tVgYAff4/NE4yDP0Kp0SPg4tjt2yFJuL31Y3wzwHjnKrjgNlDSLl3uZnRXSipw
580 27 Mehdi Abaakouk
UMwGKbdHB6NZSqlq192VKbHilQ00pbiMlAAAAIB5dfB1lVHkJ0o5CcaVQRPbca9DvbbRwnoTSmKHc5DUcqsPqDhS07CkM9
581 27 Mehdi Abaakouk
ZcJuY1Nh4wGl4Q9kArj7Tnsvvygf/HReSUcIk4+nbDytJ8/pca/Qx4fzQQyppa94TylN62LSFT6MIJKLoMwYa0dQURT7Mv
582 27 Mehdi Abaakouk
5+9Qj2vk5pZ38w2iQ9zVCg== root@h1
583 27 Mehdi Abaakouk
EOF
584 25 Mehdi Abaakouk
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passwd -d root
586 1 Mehdi Abaakouk
</pre>
587 24 Mehdi Abaakouk
588 24 Mehdi Abaakouk
589 1 Mehdi Abaakouk
apt-get install debconf-utils
590 1 Mehdi Abaakouk
debconf-get-selections > preseed.cfg # marche pas