I do not have Nagios 4.x on any production boxes yet, but I want to keep track on how this is working on Ubuntu 12.04. Apparently Nagios Core wasn’t well tested for Debian systems if at all. But in any case, it can be installed with a couple modifications.
This guide is going to be very similar to my guide on Nagios 3.x.
When I deploy a new Nagios box, I always start with this. I do not use deb packages here because they are too many versions behind. Plus, I like to have full control over how this is configured.
My Ubuntu deployment server setup provides PXE boot support for network installations, preseeding, apt mirror, and memtest as a bonus. This article documents how to replicate this setup.
This guide assumes existing knowledge in Ubuntu Server, PXE, dnsmasq.
The Linux Terminal Server Project is a great way to give old machines new life. LTSP (usually) consists of a single server that network boots several clients. These clients run the OS and most applications off this main server, so your client machines can be old hardware, thin clients, etc. Setting it up is pretty easy and only takes a couple steps beyond the initial operating system installation.
This guide assumes some existing knowledge of Ubuntu 12.04, network interface configuration, dnsmasq, and PXE.