Install Cobbler 2.6 under Ubuntu 16.04 LTS from Cobbler source – manual intallation

This article will show how to install Cobbler 2.6.11 (the last from the 2.6 branches) under Ubuntu 16.04 LTS. There is Cobbler package version 2.4.x in the Ubuntu 16 LTS, but Cobbler 2.4 is really old and some options and features are not available anymore, so installing from the Ubuntu package system Cobbler 2.4 would probably just waste your time and you will move to 2.6 or even later. In fact, Ubuntu 18 LTS removed the Cobbler packages at all and only manual install (aka installation from sources is only available or from an anonymous repository like PPA).
Here are the steps to install a working Cobbler 2.6 under Ubuntu 16.04 (Xenial Xerus).

Note: All commands are executed as root user, so it is much easier to just execute ones “sudo su” before you begin following the steps below.

STEP 1) Update your system to the latest state and install the Cobbler 2.6.11 dependencies

Update the system:

apt update
apt upgrade -y

Install the Cobbler 2.6 dependencies:

apt install -y make git python-yaml python-cheetah python-netaddr python-simplejson libapache2-mod-wsgi python-django atftpd debmirror apache2 python-urlgrabber fence-agents isc-dhcp-server

STEP 2) Download and install the Cobbler 2.6.11 source

cd /root
tar xf v2.6.11.tar.gz
cd cobbler-2.6.11
make install

This will install Cobbler and Cobbler web by replacing all configurations of old Cobbler install! The python files will be installed under “/usr/local”, so a big part of Cobbler will be installed in /usr/local/lib/python2.7/dist-packages/cobbler.

STEP 3) Enable Cobbler in apache2

a2enconf cobbler cobbler_web
a2enmod proxy proxy_http rewrite ssl
a2ensite default-ssl
systemctl enable apache2

Enable apache2 configuration file for cobbler web, enable the apache2 modules and the default HTTPS apache2 virtual host, because the web interface won’t work with HTTP. Opening the Cobbler web interface using HTTP will result in forbidden error (HTTP error 403). The Cobbler web interface is limited to use HTTPS.
Keep on reading!

Rebuild the official Ubuntu kernel – Ubuntu 16.04 LTS

There are multiple reasons to rebuild the official kernel of a Linux distro but this is not the purpose of this article

just cannot miss the chance to write that all the kernels are built therefore optimized for the very first 64bit Intel/AMD processor! But come on who wants the most important piece of software to be optimized not for his new and expensive processor but for one released 15 years ago???

. Here we are going to show you how to recompile the latest official Ubuntu kernel of Ubuntu 16.04 LTS – the one, which comes with the apt packages system, because this kernel comes with the latest and greatest patches of the Ubuntu team. You should not confuse this howto with the one, which compile a vanilla kernel or the mainline kernel from So if you want a new kernel or the latest from this is the right tutorial for Ubuntu – Build your own kernel under Ubuntu using mainline (latest) kernel. The official latest kernel in the Ubuntu repository is not always the latest one from, but you can be sure it is probably most secure one, because there are additional modifications, configurations and tests by the team. Here you can see what versions of the kernel are the officials in Ubuntu:

Keep on reading!

Install Ubuntu 16.04 LTS on a PC with existing windows 10 and linux

This tutorial will show you the simple steps of installing a modern Linux Distribution – Ubuntu Desktop 16.04 LTS (in fact the version presented here is 16.04.4 Desktop LTS). Here we present the more advanced setup installation, when you have already had installed operating systems, so this installation will add Ubuntu 16.04 LTS to our two existing ones – Microsoft Windows 10 Professional and Ubuntu 17.10. So we have 4 disks – one is NVME, the other three are SSDs and we want to install our Ubuntu 16.04 to the third disk – “sdc” in this case. Our third SSD do not have partitions or any data, so we can use the whole device.
Ubuntu Desktop 16.04 LTS comes with the following software:

  • Xorg X server – 1.19.5
  • unity (the GUI) – 7.4.5
  • linux kernel – 4.13.0
  • linux-firmware – 1.157.17
  • QT – 5.5.1
  • libc – 2.23
  • gnu gcc – 5.4.0
  • coreutils – 8.25
  • python2.7 (default) – 2.7.12
  • python3 – 3.5.1
  • perl – 5.22.1
  • compiz –
  • apt – 1.2.25
  • cups – 2.1.3

We used the following ISO for the installation process – Ubuntu 16.04.4 LTS (Xenial Xerus):

It is a LIVE image so you can try it before installing. The easiest way is just to download the image and burn it to a DVD disk and then follow the installation below:

STEP 1) Change to “Install Ubuntu” and hit enter.

To install Ubuntu from your DVD or USB you must boot from it, so change your BIOS accordingly – first boot devide should be the DVD or USB drive with Ubunto installation. If you do it successfully you would see the screenshot below.

main menu
Install Ubuntu grub option

Keep on reading!