Monthly Archives: October 2013
Facebook High-Tech Cold Storage Data Center
Photos weren’t taken by me!
I wish!
Images by Taylor Hatmaker for ReadWrite
Facebook (arguably) owns more data than God.
Photos stolen from http://kellisis.wordpress.com/2013/10/17/photo-tour-inside-facebooks-new-high-tech-cold-storage-data-center-2/
OpenStack Havana Demo
Mark Collier, COO of the OpenStack Foundation, shows off some of the new services enabled by OpenStack Havana such as Metering and Orchestration.
OpenStack Havana
OpenStack Havana, the eighth release of the open source software for building public, private, and hybrid clouds, has nearly 400 new features to support software development, managing data and application infrastructure at scale. The OpenStack community continues to attract the best developers and experts in their disciplines with 910 individuals employed by 145 different organizations contributing to the Havana release.
Learn all about Havana at the Hong Kong OpenStack Summit
Audion – Mouth to Mouth
Audion – Mouth to Mouth – (Original Mix) @320 (HD)
Facebook – 2 petabytes in a rack
Each disk in the cold storage gear can hold 4 terabytes of data, and each 2U system contains two levels of 15 disks. In other words, each unit can handle 120 terabytes. A rack could hold 16 of these storage systems, allowing for 2 petabytes of cold storage in a rack.
Source: http://www.datacenterknowledge.com/archives/2013/10/16/first-look-facebooks-oregon-cold-storage-facility/
You can read more at how to create this servers on
Hacking Conventional Computing Infrastructure » Open Compute …
www.opencompute.org/By releasing Open Compute Project technologies as open hardware, our goal is to develop servers and data centers following the model traditionally associated …
350 million photos per day – Facebook
Facebook stores more than 240 billion photos, with users uploading an additional 350 million new photos every single day. To house those photos, Facebook’s data center team deploys 7 petabytes of storage gear every month.
500 OOPS: priv_sock_get_cmd or 500 OOPS: vsftpd: refusing to run with writable root inside chroot()
500 OOPS: priv_sock_get_cmd
macbook:~ PJunior$ ftp [email protected] Connected to example.com. 500 OOPS: priv_sock_get_cmd ftp: Can't connect or login to host `example.com'
Open /etc/vsftpd.conf and at the end add
seccomp_sandbox=NO
and restart the Server:
sudo service vsftpd restart
500 OOPS: vsftpd: refusing to run with writable root inside chroot()
macbook:~ PJunior$ ftp [email protected] Connected to example.com. 500 OOPS: vsftpd: refusing to run with writable root inside chroot() ftp: Can't connect or login to host `example.com'
Open /etc/vsftpd.conf and at the end add
allow_writeable_chroot=YES
and restart the Server:
sudo service vsftpd restart
16 Free Online Business Courses That Are Actually Worth Your Time
Yale: Financial Markets with Bob Shiller
Platform: Coursera
Stanford: Entrepreneurship Through The Lens Of Venture Capital
Platform: Stanford/ITunesU
Stanford: Game Theory
Platform: Coursera
The University of Pennsylvania/Wharton: Gamification
Platform: Coursera
Columbia: Financial Engineering And Risk Management (Part 1)
Platform: Coursera
Duke: How To Reason And Argue
Platform: Coursera
Duke: A Beginner’s Guide To Irrational Behavior
Platform: Coursera
The University of Pennsylvania/Wharton: An Introduction To Marketing
Platform: Coursera
The University of Pennsylvania/Wharton: An Introduction To Financial Accounting
Platform: Coursera
The University of Pennsylvania/Wharton: An Introduction To Operations Management
Platform: Coursera
The University of Pennsylvania/Wharton: An Introduction To Corporate Finance
Platform: Coursera
Udacity: How To Build A Startup
Platform: Udacity
MIT/UC Berkeley: Introductory Macro And Microeconomics
Platform: MIT OpenCourseWare/UC Berkeley on ITunesU
MIT: Innovation And Commercialization
Platform: EdX
Columbia: Economics Of Money And Banking
Platform: Coursera
MIT: Introduction To Lean Six Sigma Methods
Platform: MIT OpenCourseWare
BONUS: Ben Bernanke on the Federal Reserve and MIT’s Andrew Lo on Financial Theory
Read more: http://www.businessinsider.com/best-free-online-business-courses-2013-10?op=1#ixzz2hrpOdEyw
TwitterOAuth! Timelines and streams
PHP library for working with Twitter’s OAuth API.
https://github.com/abraham/twitteroauth
Authenticating a Twitter Feed for OAuth API V1.1 – Timelines & streams
This tutorial is designed to help anyone who is using or wants to create a custom Twitter feed that needs to authenticate basic read-only access for any public user timeline with Twitter OAuth, API V1.1.
http://www.webdevdoor.com/php/authenticating-twitter-feed-timeline-oauth/
Hadoop, MapReduce videos
Some nice videos that I’v found on famous youtube…
just posting them to watch them later this week 🙂
Sandy Ryza, of Cloudera, gives you a quick run-down of the basics of MapReduce: A programming abstraction that allows for parallel processing of massive data sets without the worries of distributed systems or fault tolerance.
He goes over how it works, some of the applications it’s best suited for, and how it integrates with Hadoop and Java.