VeloCloud also joins the AIC ecosystem.
Non-cloud infrastructure, meanwhile, is on the decline.
In a previous tutorial I showed installation of Clonezilla Server Edition on Ubuntu using my own Bash script. We configured PXE (Pre eXecution Environment)) password for clients so when the clients booted a password had to be entered to startup. This tutorial explains two different ways how to get and crack the PXE boot password.

Picture 1 - Client Requires to Enter PXE Password During Startup
First, we should mention some facts. The PXE client password is stored in plain text in a configuration file /etc/drbl/drblpush.conf. The password is secretpassword and it can be found in a dictionary rockyout.txt.
Picture 2 - Plain Text PXE Client Boot Password
The same PXE client password is stored as a hash in a file /tftpboot/nbi_img/prelinux.cfg/default.
Picture 3 - PXE Client Boot SHA-1 Base64 Encoded Salted Hash
The hash is created by utility /usr/sbin/sha1pass on DRBL server. It is a Perl script which takes two arguments from STDIN - a password and salt and it creates SHA-1 base64 salted hash.
Picture 4 - Perl Script fo Generating Hash from Password and Salt
Explanation:
They are several methods how to obtain PXE boot Continue reading
A short note reminding the gentle readers who wander in to this site of the riches of information available in the main menu to the left of this post…
rule 11 reader takes you to a subscription form for the mailing list. The format and frequency of the mailing list is a little messed up right now, and I always mean to do more with it, but never seem to get around to it.
sixty books takes you to a list of books I’ve found particularly helpful or useful over the years. The title isn’t the number of books, strictly speaking, but rather a challenge to read sixty books this year. Not all of these are related to network engineering.
worth visiting is something of a blog role and interesting sites, not all related to network engineering.
author page takes you to a page listing all of my works. Right now this is on Amazon, but as not all my works are available on Amazon, I need to fix this. Yes, it’s already on my list of things to do.
network icons is a set of icons I use in public presentations not tied to a company, etc. These are Continue reading
Hey, it's HighScalability time:
Out with market consolidation and in with market growth.
Docker Datacenter customer, Shawn Bower of Cornell University recently shared their experiences in containerizing Confluence as being the start of their Docker journey.
Through that project they were able to demonstrate a 10X savings in application maintenance, reduce the time to build a disaster recovery plan from days to 30 minutes and improve the security profile of their Confluence deployment. This change allowed the Cloudification team that Shawn leads to start spending the majority of their time helping Cornelians to use technology to be innovative.
Since the original blog was posted, there’s been a lot of requests to get the pragmatic info on how Cornell actually did this project. In the post below, Shawn provides detailed instructions on how Confluence is containerized and how the Docker workflow is integrated with Puppet.
Written by Shawn Bower
As we started our Journey to move Confluence to the cloud using Docker we were emboldened by the following post from Atlassian. We use many of the Atlassian products and love how well integrated they are. In this post I will walk you through the process we used to get Confluence in a container and running.
First we needed to craft a Dockerfile. At Cornell Continue reading