Have you ever wondered how people plan for the capacity of a system? This presentation tries to explain how to do it. It is definitely an art, but the tools used here will help you learn how to do it with logic and reason rather than hopeful optimism. That should help you keep from under or over sizing the systems you build in the future.
Systemd is the new system that Ubuntu is using to control the boot process. It’s what makes the systems boot faster and cleaner. It does things dramatically differently than the older init.d system did.
Abraham Williams on Google+ pointed us to an article over on the CloudFlare blog about how they dealt with a recent 65Gbps attack. The article titled “How to launch a 65Gbps DDOS attack and how to stop one” gives some high level details about how they deal with such attacks and how someone can get 65 Gbps of bandwidth to even start one. The article does a great job of explaining one method using Open Unrestricted DNS Resolver. The basic idea is that since DNS can be done with UDP packets you can easily forge the from address and cause the Open Unrestricted DNS Resolver to reply to the targeted computers or network. This is exploiting two flaws in the internet. The first that UDP is a fire and forget protocol which doesn’t require any proof of where you are coming from. The second is that Open Unrestricted DNS Resolver exist or at the least allow UDP requests. DNS can and should be required to be done over TCP which makes forging the information much harder and less reliable.
They have an article they wrote before this one that talks about and apologizes to their customers for the disruption in the first place. It’s found here and called “Post Mortem: What Yesterday’s Network Outage Looked Like” . It is a shinning example of what a company should do when an event like this happens. It is very transparent, clear and easy to understand and most of all genuine. While I know it’s great PR it’s not something I see a lot of companies like them doing.
Let us know if you have ever dealt with something like this in your job?
Do you think they took the proper response?
What do you think of the post mortem?
Update: Changed Open to Unrestricted becuase as pointed out in the comments below it seemed to imply the awesome DNS service by a similar name. They, to our knowledge, were not part of the problem.
ITWorld.com has a great article that discusses how different development is in today’s world as compared to say 10 years ago. They focus on the fact that Linux is at the core of so many devices these days how can you know what hardware platform your app will need to run on? The article asks lots of interesting quesitons and has some ideas of where we are going. Where do you think we are headed? Is having so many different ways to use linux, i.e. Phones, Laptops, tablets, making it harder or easier to program?
Here are ten new ones to look at over on inforworld.com. While new languages come out all the time there are only two on this list that anyone here at linuxinstall.net had even heard of. Before you decide to build your next startup on one of these make sure you know what you are getting yourself into. The road to today’s modern languages is paved with the dead languages that came before them.
While surfing around the other day looking for stories about the Amazon Outage I came across this story about how SmugMug managed to come through it basicly unaffected. The article is written by Don MacAskill acording to his LinkedIn Profile he is Co-Founder, CEO, & Chief Geek at SmugMug. The article goes through a lot of inforation and I warn you now that it is a long article. I suggest reading it so that you can start understanding the limitations in the Cloud and what can be done to avoid it. (Tip: Read the links to the Forum Posts. A lot of the comments are pretty bad.)
When you get done with this one check out this post from Joe Stump,a former Digg employee and currently at SimpleGeo. He talks about how people should have planned for this type of event. It’s a great read with awesome points.(Also much shorter 😉 )
What the heck is DNSSEC? This article does a darn good job of explaining it. If your company isn’t using it might be time to get it roll-out. When you can this is a great way to secure your DNS and still let users work.
According to this article we found, meetings are starting to happen and people are trying to move towards a common Application Installer. So their could be the end of the “My package manager is better than yours is” debates? Well it’s a bit early to tell but it does sound like the big distros are talking about settling on a common package format. If they do go forward with this we can only hope that it’s adoption moves faster than LSB(Linux Standards Base). It would definitely go a long way to help adoption of Linux as a platform. For instance, only seeing one line on download pages like Windows and Mac have would help newbies or people thinking about trying linux be less afraid. When you can create app stores that only have to carry one type of package they become a lot easier to create. We here at linuxinstall.net hope that every linux install will get easier over time.
What do you think? What problems will one package format have? What hidden benefits are there? What hidden problems?
Running Time: 00:50:32
Can you believe we have managed to keep this up for 40 episodes?
3) Topic of the night… Puppet RULES!!!
We wrote up a review and introduction of Puppet
Then we got to interview Luke Kanies the Founder and Puppet Master at Puppet Labs. (Check out another interview of Luke with Leo and Randall on FLOSS Weekly did back in November 2009)
Recommendations for People to interview
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Have you ever needed help developing your Open Source Strategy? Are you looking for someone to validate the one you do have? Well then you may want to talk to Black Duck. They are a consulting and software company that just made several acquisitions recently that put them in a great position to help companies of all sizes. An article over at ZDNet talks about the latest purchase and recaps the previous ones. So if this is something your looking for check it out.