Alexey Siretskiy

Alexey Siretskiy

NUC Cluster

Automating private bare-metal NUC cluster setup with Cobbler

By Alexey Siretskiy

Five Main Steps

Building a NUC cluster has the following five steps:

How-to’s

One can not use “Desktop” version of the distribution, since

“The reason is that Ubuntu does not support PXE installing from the desktop ISO (netboot installer is not included). So just adding a signature wont do any good.. Just use the server ISO and install a desktop from there.”

https://github.com/cobbler/cobbler/issues/1331

replace in /usr/share/cobbler/web/cobbler.wsgi: import django.core.handlers.wsgi _application = django.core.handlers.wsgi.WSGIHandler()

by: from django.core.wsgi import get_wsgi_application _application = get_wsgi_application()

https://github.com/cobbler/cobbler/issues/1488
https://www.unixmen.com/setup-pxe-boot-environment-using-cobbler-centos-6-5/

links and errors

https://www.centos.org/forums/viewtopic.php?t=47775
https://bugs.launchpad.net/tuxboot/+bug/1190256

ubuntu@pxeserver:~$ sudo cp /usr/lib/syslinux/modules/bios/libcom32.c32 /var/lib/tftpboot/
ubuntu@pxeserver:~$ sudo cp /usr/lib/syslinux/modules/bios/libutil.c32 /var/lib/tftpboot/
ubuntu@pxeserver:~$ sudo cp /usr/lib/syslinux/modules/bios/menu.c32 /var/lib/tftpboot

ON CENTOS

"/etc/httpd/conf.d/cobbler_web.conf" 46L, 1240C

# This configuration file enables the cobbler web interface (django version)

<Directory "/usr/share/cobbler/web/">
#        <IfModule mod_ssl.c>
#            SSLRequireSSL
#        </IfModule>
#        <IfModule mod_nss.c>
#            NSSRequireSSL
#        </IfModule>
        SetEnv VIRTUALENV
        Options Indexes MultiViews
        AllowOverride All
        Order allow,deny
        Allow from all
</Directory>

<Directory "/var/www/cobbler_webui_content/">
        <IfModule mod_ssl.c>
            SSLRequireSSL
        </IfModule>
        <IfModule mod_nss.c>
            NSSRequireSSL
        </IfModule>
        Options +Indexes +FollowSymLinks
        AllowOverride All
        Order allow,deny
        Allow from all
</Directory>

# Use separate process group for wsgi
WSGISocketPrefix /var/run/wsgi
WSGIScriptAlias /cobbler_web /usr/share/cobbler/web/cobbler.wsgi
WSGIScriptAlias /cobbler_webui_content /var/www/cobbler_webui_content
WSGIDaemonProcess cobbler_web display-name=%{GROUP}
WSGIProcessGroup cobbler_web
WSGIPassAuthorization On

<IfVersion >= 2.4>
    <Location /cobbler_web>
        Require all granted
    </Location>
    <Location /cobbler_webui_content>
        Require all granted ss

[vagrant@pxeserver ~]$ sudo yum -y install epel-release
[vagrant@pxeserver ~]$ sudo yum install cobbler
[vagrant@pxeserver ~]$ sudo yum install cobbler cobbler-web

https://www.centos.org/docs/5/html/5.1/Deployment_Guide/sec-sel-enable-disable.html

[vagrant@pxeserver ~]$ sudo yum install dhcp

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication yes
in "/etc/ssh/sshd_config" 154L, 4368C written

http://centoshowtos.org/installation/kickstart-and-cobbler/

[root@pxeserver vagrant]# yum install  xinetd

remote tftp server for dnsmasq

https://ubuntuforums.org/showthread.php?t=1605715

xadmin@cn102:~$ apt-cache  policy
Package files:
 100 /var/lib/dpkg/status
     release a=now
 500 http://10.200.1.101/cblr/links/xenial-x86_64 xenial/main amd64 Packages
     release v=16.04,o=Ubuntu,a=xenial,n=xenial,l=Ubuntu,c=main,b=amd64
     origin 10.200.1.101
Pinned packages:

f

xadmin@c2gw:~$ cat /etc/dnsmasq.conf
interface=vlan2
domain=c2.combient.com,10.200.1.0/24,local
dhcp-range=10.200.1.100,10.200.1.199
dhcp-sequential-ip
dhcp-script=/var/lib/misc/dnsmasq-assign.sh
dhcp-hostsfile=/var/lib/misc/dnsmasq.hosts
## pxe booting
dhcp-boot=pxelinux.0,boothost,10.200.1.101
#enable-tftp
#tftp-root=/var/lib/tftpboot
xadmin@c2gw:~$

https://bugs.launchpad.net/ubuntu/+source/debmirror/+bug/1565751
[root@cn101 xadmin]# vi /usr/bin/debmirror

 2397     #next if $filename !~ /bz2$/;
 2398     next if  $filename !~  /xz$/;

Updated: