Linux Multimedia: Using Handbrake for Media Conversions

Multimedia on Linux has gone from being a giant pain to being more powerful than any other operating system, including the vaunted Multimedia powerhouse Apple OSX. One of the most valuable tools in your Linux Multimedia arsenal is a great conversion utility called Handbrake – and like all the best Linux utilities, it’s free! Let’s take a look at getting it set up for our use.

Download and Installation
Normally I would gloss over the download portion of our article, but if you just do a Google search looking for Handbrake, the first couple of pages are littered with fakes, download managers and other places that are at best redistributing Handbrake and at worst installing who knows what on your PC. The only OFFICIAL place (other than your distribution repositories, which tend to run a bit behind the latest stable version) to get this utility is at the Handbrake website. Make sure you pick up your copy from here.


Re:Invent Recap and 9 Linux Academy Students Pass Certifications At Re:Invent (100% pass rate!)

WOW! This week at Re:Invent was truly a cool experience. Not only did we get to see a lot of new services and meet some neat people, we had the opportunity to see 9 certification exams taken by Linux Academy students and 9 certifications issued to Linux Academy students! That is awesome! First off thank you students who took the opportunity to share your success at re:invent with us! If your a Linux Academy student you can go into the community and talk with these other students. If not check out our public community archive to see what they had to say about passing!! It can be found here

If you are interested to hear a recap of what was released at re:invent as well as what it might mean for the AWS Certifications check out our AWS Re:invent Linux Academy Show below!

Understanding Keystone Endpoints

(OpenStacks Identity Service)

OpenStack Identity (Keystone) provides a central directory of users mapped to the OpenStack services they can access. It acts as a common authentication system across the cloud operating system and can integrate with existing backend directory services like LDAP. It supports multiple forms of authentication including standard username and password credentials, token-based systems and AWS-style (i.e. Amazon Web Services) logins. Additionally, the catalog provides a queryable list of all of the services deployed in an OpenStack cloud in a single registry. Users and third-party tools can programmatically determine which resources they can access.

In OpenStack before we can start utilizing the the vast ecosystem of services and applications that are available ie: (Nova, Swift, Neutron, Glance, etc), we first have to authorize our users.  There are some very important terms that we need to understand when working with OpenStack Identity (keystone).

I would like to take a moment to address one of the biggest confusions when setting up endpoints in keystone today.  First let’s start out by defining what an endpoint even is.  An endpoint in keystone is just a URL that can be used to access a service within OpenStack.  An endpoint is just like a point of contact for YOU (the user) to use an OpenStack service.  The adminurl (we will show these further down) is for the admin users, the internalurl are what the other services use to talk to each other.  And the publicurl is what everyone else accessing the service endpoint uses.