This guide show you how to make a gold master virtual machine image of Ubuntu 12.04 LTS. The purpose of this is because we’ll be creating a lot of new virtual machines and it’s far easier to clone a master image than to install each and every time. Let’s get started… #Download Ubuntu Server 12.04 64 bit http://www.ubuntu.com/download/server
Now go into VMWare and create the master virtual machine by select new virtual machine.
Go to VMware and create a new VM
Choose typical
Choose the ubuntu installer disk and select “I will install the operating system later”
Choose Linux Version Ubuntu
Call this virtual machine Ubuntu
Make the Disk Size 10 GB
Add the Ubuntu iso to the virtual cd
Power on the Virtual machine
Press Enter to choose the English language
Then, Press F4 to install a minimal virtual machine
Then press enter twice
This will kick off the install, choose all defaults
only install the OpenSSH service
Don’t install anything!!! Puppet will take care of everything.
Update and Upgrade
login when done and run: sudo apt-get update sudo apt-get upgrade sudo apt-get dist-upgrade
Add Virtual Machine Tools
If you are on Virtual Box: sudo apt-get install dkms
If you are on VMWare: sudo apt-get install open-vm-tools
Add the puppet client agent
sudo apt-get install puppet
Configure the puppet defaults vi /etc/defaults/puppet
Defaults for puppet - sourced by /etc/init.d/puppet
Start puppet on boot?
START=yes
Startup options
DAEMON_OPTS=”–report”
Puppet should start on boot and look to the master for the manifests to define it.
eth0 eth1 problem when cloning
The root of the problem at our site was udev’s handling of devices. Udev keeps a history of devices attached to the computer. What makes sense for i.e. USB sticks (that is, each USB stick you attach will be recorded and mounted to the same point when attached again at a later point in time), causes problems when systems are cloned.
There is a file /etc/udev/rules.d/z25_persistent-net.rules, where udev memorises, which hardware device should get named eth0. Here it looks like this:
\# PCI device 14xx:16xx (tg3)
ACTION=="add", SUBSYSTEM=="net", DRIVERS=="?*", SYSFS\{address}=="00:11:xx:xx:xx:xx", NAME="eth0"When you run the image on another computer, the new network adapter is recognised on the PCI bus and a new entry in the above mentioned file is generated. “eth0” is already given to device 14xx:16xx, so the new device gets named “eth1”.
If you delete this file, it will be rebuilt during the next system startup and your problem should go away.
Shutdown
now shutdown, you now have your golden master
shutdown the VM, this is the golden master