Node.js – building massively parallel applications with javascript and epoll

Node.js [http://nodejs.org/] is a framework for rapidly building massively parallel network applications using non-blocking io. It’s built on the performant v8 javascript engine [http://code.google.com/p/v8/] which compiles javascript to machine code at runtime. Node is similar in design to systems like Ruby’s EventMachine [http://rubyforge.org/projects/eventmachine/] or python’s twisted [http://twistedmatrix.com/trac/]. It’s suitable for building chat-like protocols, comet servers, mmo game servers, etc. This session will cover some of the basics of how to build and install node.js as well as analyze some demo programs.

If time permits, I might talk a little bit about python’s twisted and compare some programs written using twisted/node.js

About Shane Hansen:

I’m a Software Engineer working on Backcountry.com’s replatforming teams. Prior to that I worked on projects ranging from compliance tracking software for the goverment to building  mathematical models for reflectometry to immune system modeling. I’m interested in open source software, web standards, high performance computing and application architecture

Meeting Location:

BetaLoft (http://betaloftslc.com) is located at 357 W 200 S. Upstairs in Suite 201. Salt Lake City, UT, 84101

Betaloft is a coworking space in the heart of downtown Salt Lake City founded by Drew Tyler.

We are a community of freelancers, independents and work-from-home people, who have an interest in getting out of our dull work day and participating in a community that’s designed to support and encourage people who make a living doing what they love.

We provide communication tools, events (social and educational), as well as a physical space to work and collaborate.

See you all there!

Clint

Vim 101 and Beyond

Vim is the editor of choice for many developers and power users. It’s a “modal” text editor based on the vi editor written by Bill Joy in the 1970s for a version of UNIX. It inherits the key bindings of vi, but also adds a great deal of functionality and extensibility that are missing from the original vi. This session will cover the beginnings (101) and the first set of intermediate (201) modes and commands for vim.

If you would like to join us, just head on down via train, car (parking is free on the street for two hours just east and west of BetaLoftSLC), walk or bike to:

WHEN

Wednesday, February 10, 2010
11:30am-1:00pm

WHERE

Come learn some tips and tricks about Vim.  We hope to see you all there.

Cheers,

Clint

As usual, come from 11:30am-1pm at BetaLoftSLC (357 W 200 S #201)  - http://betaloftslc.com

This month, I thought I would share a basic git introduction.  In my opinion, the best Source Control Management (SCM) system out right now.  I’ve been using it for nigh on a year and I have converted a few systems over to it from svn.  This is more of a work session than a presentation, so come on down and learn how to use git.  It is recommended that you bring your laptops with you as that will benefit more if you do.

Some suggested topics I can cover:

• Local and remote git repositories (different workflows and other fun stuff)
• Using git-svn to ‘convert’ from svn
• Comparing Distributed Revision Control with Traditional (non-distributed) Revision Control
• Git hooks, why they are valuable and when to use them
• Other basic git discussions

See you all there.

Cheers,

Herlo

RSSCloud is an open protocol which creates a loosely-coupled Twitter-like network of people and 140 character status messages.  In plainer language, it enables real-time status updates on anything that can be pushed via RSS.  Why should you care?  Come to the SLLUG daytime SIG meeting to find out.

More information can be found at http://rsscloud.org/

So why not come down to BetaLoft next Wednesday, November 11, from 11:30am-1pm and learn about RSSCloud.

Cheers,

Herlo

Location:

BetaLoft SLC – 357 West 200 S, Suite 201, Salt Lake City
Map

See you all there.

Clint

This month’s SLLUG Daytime SIG meeting is this coming Wednesday, July 8, from 11:30am-1pm at BetaLoft.  I apologize for being slow getting this out, we’ve been working through a big datacenter move this past week at work.  Now that is over, it’s time for SLLUG Daytime at BetaLoft, (357 W 200 S Suite 201 Salt Lake City, UT, 84101).  Here’s a map if you need directions.

I’d like to let you all know that I (Herlo) will be presenting this month, and the topic is: Cobbler, the powerful, installation, dhcp, dns and repo server!

If you have ever wanted to setup a system with pxe, dhcp, customized repositories and more, then cobbler is for you.  Feel free to read up on the cobbler website before the meeting.

I should mention that cobbler supports several distributions of Linux, and will soon support Windows remote installation (using Linux RIS).  Albeit, I’ll focus on setup of cobbler, a simple installation server with just one distro, using kvm and koan (kickstart over a network) with some basic networking and showing the gui tools as well.

Bring your lunch and your brains and learn all about setting up your very own install server in under an hour.

See you all on Wednesday!

Cheers,

Herlo

I’ve been a bit quiet about the SLLUG Daytime SIG meeting this month.  That’s because I’ve been trying to decide whether we should continue to meet at the Salt Lake Public Library.  While the library is a nice place to meet, I learned about a great new business opening up this month called BetaLoft.  Last Tuesday, I visited BetaLoft and its founder Andrew Tyler has put together quite a nice facility for the first coworking location in Salt Lake City.  Located right downtown near traxx and the Gateway, it’s very convenient (and free) parking on the streets to the east and west, make this place a great location for our SLLUG Daytime SIG meeting.

Due to this change, and the short notice of the change, I will try to send out a few reminders between now and Wednesday.  Our normal meeting time 11:30am-1pm is still set.  BetaLoft has some great conference facilities, plus they have a big flat screen tv for Rock Band.  So it should be a blast!

So where is BetaLoft, you ask?  Here’s the information:

BetaLoft
357 W 200 S, Suite 201 (in the same building as Aculis) (map)
Salt Lake City, Utah 84101

Now that the new location is decided, please come on down to our new digs and learn about IPTables.  Kevin Benko has prepared a presentation on the basics of IPTables.  For those of you who were discussing this on the mailing list, this is your opportunity to come and have the discussion.

Cheers,

Herlo

Here’s the email from Marc Christensen:

The Salt Lake Linux Users Group started its humble beginnings sometime in May of 1994.  A few weeks later we officially incorporated as a non-profit on July 28, 1994. That makes this month our 15th year soft-anniversary with the official one coming up in July.  It also makes SLLUG one of the oldest and most established Linux user groups in the world!

Congratulations to everyone one for making SLLUG a success and contributing to such a great Local Linux community.  We have members of our group that have greatly influenced and contributed heavily to Linux over the years.  We make up a diverse group of individuals of varied backgrounds and depth of knowledge.

We rock!  :)  Thanks to everyone who has helped make the Salt Lake Linux Users Group such a success over the years and here’s to many many more!!!!!

–
Marc Christensen
http://www.sllug.org

Again, congratulations to the Salt Lake Linux User Group and all of its members for 15 great years.  Here’s looking forward to 15 more.

Cheers,

Herlo

What is Puppet?  (for the curious and uninitiated)

Puppet is an open-source next-generation server automation tool. It is composed of a declarative language for expressing system configuration, a client and server for distributing it, and a library for realizing the configuration.

More information is available here: http://reductivelabs.com/trac/puppet/wiki/FrequentlyAskedQuestions

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We meet in conference room A on the lower level of the Salt Lake Library.  Head down the stairs, make a left turn.  The conference room  is directly under the foyer area (the area with all the shops on the 1st level)  If you aren’t clear, ask the information desk.

Also, our meetings should be posted on the Electric Signs by the entrance to the library on the first floor.

Cheers,

Herlo

Cooking with PAM

Thad Van Ry will cover the basics of Pluggable Authentication Modules (PAM). If you’re a Sys Admin who wants to know how PAM can help you or hurt you, this meeting is for you. Thad will go over the different stacks available as well as how to call modules and their control flags.

Thad is a Linux System Administrator for the LDS Church. He has been using Linux in his work life for the past 12+ years.

We meet in conference room A on the lower level of the Salt Lake Library.  Head down the stairs, make a left turn.  The conference room is directly under the foyer area (the area with all the shops on the 1st level)  If you aren’t clear, ask the information desk.  A map is available of all floor plans of the library.

Also, our meetings should be posted on the Electric Signs by the entrance to the library on the first floor.