Différences

Ci-dessous, les différences entre deux révisions de la page.

--- tech:notes_cobbler [2025/11/09 19:02] – Jean-Baptiste
+++ tech:notes_cobbler [2026/06/07 19:12] (Version actuelle) – modification externe 127.0.0.1
@@ Ligne 1: / Ligne 1: @@
+<!DOCTYPE markdown>
+{{tag>Brouillon Déploiement Boot}}
+# Notes Cobbler
+Liens :
+* http://thinlight.org/2014/11/08/getting-started-with-cobbler/
+* https://help.ubuntu.com/community/Cobbler
+* https://access.redhat.com/documentation/en-US/Red_Hat_Network_Satellite/5.3/html/Reference_Guide/ch-cobbler.html
+* Cobbler Debian repo https://fedorahosted.org/cobbler/wiki/DebianDeployment
+Voir aussi :
+[[cobbler_deploiement_ubuntu_ou_debian|Cobbler déploiement Ubuntu ou Debian]]
+## Installation sur CentOS7
+Désactivation de SELinux
+`/etc/selinux/config`
+~~~ini
+SELINUX=disabled
+~~~
+~~~bash
+setenforce 0
+~~~
+Après l'activation des dépôts EPEL
+~~~bash
+yum install cobbler-web cobbler dhcp xinetd
+systemctl start xinetd
+~~~
+On cherche le nom du service
+~~~bash
+#rpm -q --filesbypkg cobbler | grep systemd
+rpm -ql cobbler | grep systemd
+~~~
+~~~
+/usr/lib/systemd/system/cobblerd.service
+~~~
+~~~bash
+systemctl start cobblerd.service
+systemctl status cobblerd.service
+systemctl enable cobblerd.service
+systemctl start httpd
+systemctl enable httpd
+~~~
+`/etc/cobbler/settings`
+~~~
+# IP du serveur Web Cobbler. Koan devra pouvoir joindre cette IP
+server: 192.168.100.159
+# IP du serveur Cobbler/PXE (interface qui fera office de DHCP)
+next_server: 192.168.102.1
+manage_dhcp: 1
+~~~
+Souvent **server** et **next_server** aurons la même adresse IP. Dans mon cas, j'ai mis Cobbler dans une VM en CentOS. La VM cobbler ici à deux interfaces réseaux :
+* 192.168.100.159 Sur réseau NAT, qui peut sortir sur internet pour les `yum install` et autres
+* 192.168.102.1   Sur réseau isolé, destiné au PXE et au DHCP
+Après avoir modifié ce fichier
+~~~bash
+systemctl restart cobblerd.service
+~~~
+~~~bash
+cobbler check
+~~~
+~~~
+The following are potential configuration items that you may want to fix:
+: For PXE to be functional, the 'next_server' field in /etc/cobbler/settings must be set to something other than 127.0.0.1, and should match the IP of the boot server on the PXE network.
+: SELinux is enabled. Please review the following wiki page for details on ensuring cobbler works correctly in your SELinux environment:
+    https://github.com/cobbler/cobbler/wiki/Selinux
+: some network boot-loaders are missing from /var/lib/cobbler/loaders, you may run 'cobbler get-loaders' to download them, or, if you only want to handle x86/x86_64 netbooting, you may ensure that you have installed a *recent* version of the syslinux package installed and can ignore this message entirely.  Files in this directory, should you want to support all architectures, should include pxelinux.0, menu.c32, elilo.efi, and yaboot. The 'cobbler get-loaders' command is the easiest way to resolve these requirements.
+: enable and start rsyncd.service with systemctl
+: debmirror package is not installed, it will be required to manage debian deployments and repositories
+: ksvalidator was not found, install pykickstart
+: The default password used by the sample templates for newly installed machines (default_password_crypted in /etc/cobbler/settings) is still set to 'cobbler' and should be changed, try: "openssl passwd -1 -salt 'random-phrase-here' 'your-password-here'" to generate new one
+: fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use them
+~~~
+Nous continuons de suivre les recommendations de `cobbler check`
+~~~bash
+cobbler get-loaders
+~~~
+~~~bash
+yum install pykickstart
+~~~
+~~~bash
+systemctl start rsyncd.service
+systemctl enable rsyncd.service
+~~~
+~~~bash
+openssl passwd -1
+~~~
+On change le `default_password_crypted` de /etc/cobbler/settings
+~~~bash
+systemctl restart cobblerd.service
+~~~
+~~~bash
+cobbler sync
+~~~
+## Cobbler pour Ubuntu
+Soit nous utiliserons Preseed, le systeme de Debian/Ubuntu
+Soit nous utiliserons Kickstart, le système de RedHat/CentOS partiellement porté sur Ubuntu
+Kickstart Ubuntu
+* https://infoscience.epfl.ch/record/209242/files/5-12-page12.pdf
+* https://help.ubuntu.com/community/KickstartCompatibility
+Kickstart Ubuntu - Exemple
+* https://gist.github.com/vrillusions/d292953ff9bc0e2041d9
+* https://gist.github.com/ludo/3652811
+Vérif
+~~~bash
+cobbler check
+~~~
+~~~bash
+cobbler import --name=ubuntu-server --path=/mnt --breed=ubuntu --os-version=16.04 --arch=x86_64
+~~~
+~~~
+task started: 2016-06-01_141407_import
+task started (id=Media import, time=Wed Jun  1 14:14:07 2016)
+No signature matched in /var/www/cobbler/ks_mirror/ubuntu-server-x86_64
+!!! TASK FAILED !!!
+~~~
+PS : C'est que je n'ai pas suivi correctement la doc https://help.ubuntu.com/community/Cobbler/Import
+De plus il faut faire
+On jette un œil dans
+* http://cobbler.github.io/signatures/2.6.x/latest.json
+* /var/lib/cobbler/distro_signatures.json
+Solution
+~~~bash
+cobbler signature update
+~~~
+et mettre le bon `--os-version`
+~~~bash
+cobbler import --name=ubuntu-server --path=/mnt --breed=ubuntu --os-version=xenial --arch=x86_64
+~~~
+Pour info :
+~~~
+trying symlink: /var/www/cobbler/ks_mirror/ubuntu-server-x86_64 -> /var/www/cobbler/links/ubuntu-server-x86_64
+~~~
+Un profile a été crée
+~~~bash
+cobbler profile list
+~~~
+~~~
+ubuntu-server-x86_64
+~~~
+Copions-le
+~~~bash
+cobbler profile copy --name=ubuntu-server-x86_64 --newname=buntutest1
+~~~
+Interface d'administration Web Cobbler https://192.168.100.159/cobbler_web  \\
+utilisateur : cobbler \\
+pass : cobbler \\
+### Déploiement
+Sur le serveur Cobbler
+`--interface` OK ?
+~~~bash
+cobbler system add --profile=CentOS-7-x86_64 --name=test01 --mac=52:54:00:DD:EE:FF --interface=eth0
+~~~
+Sur l'hyperviseur
+~~~bash
+koan --virt --wait=-1 --system=test01 --virt-bridge=virbr0
+~~~
+### Configuration du dépôt
+Voir [[Notes debmirror]]
+~~~bash
+yum install debmirror
+~~~
+Une fois que debmirror est configuré
+~~~bash
+cobbler reposync --only=ubuntu-server-x86_64
+~~~
+## Effacement
+Exemple
+~~~bash
+cobbler system remove --name=ttest02
+cobbler profile remove --name=ubuntu-server-16.04.vm
+cobbler profile remove --name=ubuntu-server-x86_64
+cobbler distro remove --name=ubuntu-server-x86_64
+cobbler repo remove --name=ubuntu-server-x86_64
+~~~
+## Cobbler sur RedHat - notes en vrac
+{{tag>Brouillon}}
+# Cobbler
+Voir [[cobbler_deploiement_de_debian]]
+## KVM Koan
+### Install
+~~~bash
+rpm -uvh koan-2.8.1-2.el7.noarch.rpm python2-simplejson-3.10.0-1.el7.x86_64.rpm python-ipaddr-2.1.11-1.el7.noarch.rpm virt-install-1.4.1-7.el7.noarch.rpm
+# rpm -Uvh virt-manager-common-1.4.1-7.el7.noarch.rpm # Remplacé par Cockpit
+~~~
+### Network bridge
+~~~bash
+virsh iface-bridge eth0 br0
+virsh iface-unbridge br0
+~~~
+### Network NAT
+https://jamielinux.com/docs/libvirt-networking-handbook/nat-based-network.html
+`/tmp/default.xml`
+~~~xml
+<network>
+  <name>default</name>
+  <bridge name="virbr0"/>
+  <forward mode="nat"/>
+  <ip address="192.168.122.1" netmask="255.255.255.0">
+    <dhcp>
+      <range start="192.168.122.2" end="192.168.122.254"/>
+    </dhcp>
+  </ip>
+</network>
+~~~
+~~~bash
+virsh net-define /tmp/default.xml
+virsh net-start default
+virsh net-autostart default
+~~~
+~~~bash
+export COBBLER_SERVER=192.168.21.3
+koan --virt --wait=-1 --system=test1 #--virt-bridge=virbr0 --server=192.168.21.3
+~~~
+## Cobbler
+~~~
+ssh -R:3128:192.168.56.1:3128 cobbler
+export https_proxy=http://127.0.0.1:3128
+export http_proxy=http://127.0.0.1:3128
+cat /etc/yum.repos.d/epel.repo
+[epel]
+name=Extra Packages for Enterprise Linux 7 - $basearch
+baseurl=http://download.fedoraproject.org/pub/epel/7/$basearch
+#mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=$basearch
+failovermethod=priority
+enabled=1
+gpgcheck=0
+#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
+subscription-manager repos --enable='rhel-7-server-rpms'
+subscription-manager repos --enable=rhel-7-server-extras-rpms
+subscription-manager repos --enable=rhel-7-server-optional-rpms
+# Disable selinux
+yum update
+yum install atop tmux cobbler cobbler-web
+systemctl start cobblerd.service
+systemctl enable cobblerd.service
+systemctl start httpd
+systemctl enable httpd
+/etc/cobbler/settings
+next_server: 192.168.53.10
+server: 192.168.21.3
+proxy_url_ext: "http://127.0.0.1:3128"
+systemctl restart cobblerd.service
+cobbler check
+/etc/xinetd.d/tftp
+#disable                 = yes
+disable                 = no
+~~~
+### Autres
+#### Version os connus
+~~~bash
+osinfo-query os
+~~~
+### Pb
+~~~
+# cobbler import --name=rhel --path=/mnt/iso --breed=redhat --os-version=7 --arch=x86_64
+task started: 2017-10-04_140324_import
+task started (id=Media import, time=Wed Oct  4 14:03:24 2017)
+No signature matched in /var/www/cobbler/ks_mirror/rhel-x86_64
+!!! TASK FAILED !!!
+~~~
+Solution
+~~~bash
+cobbler import --name=rhel --path=/mnt/iso --breed=redhat --os-version=rhel7 --arch=x86_64
+~~~
+Voir /var/lib/cobbler/distro_signatures.json
+~~~bash
+cobbler get-loaders
+cobbler signature update
+~~~
+Penser à faire le ménage dans `/var/www/cobbler/ks_mirror/` en effacer les imports échouées
+Réseaux :
+Server settings
+~~~
+default_virt_bridge = br0
+~~~