What is Ansible?

Ansible is an open source automation platform. It is very, very simple to setup and yet powerful. Ansible can help you with configuration management, application deployment, task automation. It can also do IT orchestration, where you have to run tasks in sequence and create a chain of events which must happen on several different servers or devices. An example is if you have a group of web servers behind a load balancer. Ansible can upgrade the web servers one at a time and while upgrading it can remove the current web server from the load balancer and disable it in your Nagios monitoring system. So in short you can handle complex tasks with a tool which is easy to use.

Ansible is a radically simple IT automation engine that automatescloud provisioning, configuration management, application deployment,intra-service orchestration, and many other IT needs.

Designed for multi-tier deployments since day one, Ansible models your IT infrastructure by describing how all of your systems inter-relate, rather than just managing one system at a time.

It uses no agents and no additional custom security infrastructure, so it's easy to deploy - and most importantly, it uses a very simple language (YAML, in the form of Ansible Playbooks) that allow you to describe your automation jobs in a way that approaches plain English.

 Ansible works by connecting to your nodes and pushing out small programs, called "Ansible modules" to them. These programs are written to be resource models of the desired state of the system. Ansible then executes these modules (over SSH by default), and removes them when finished.

Your library of modules can reside on any machine, and there are no servers, daemons, or databases required. Typically you'll work with your favorite terminal program, a text editor, and probably a version control system to keep track of changes to your content.

Ansible uses SSH which is assumed to be installed on all the systems you want to manage. Also it’s written in Python which needs to be installed on the remote host. This means that you don’t have to setup a client server environment before using Ansible, you can just run it from any of your machines and from the clients point of view there is no knowledge of any Ansible.
Michael DeHaan, the author of the provisioning server application Cobbler and co-author of the Func framework for remote administration, developed the platform. It is included as part of the Fedora distribution of Linux, owned by Red Hat Inc., and is also available for Red Hat Enterprise Linux,CentOS, and Scientific Linux via Extra Packages for Enterprise Linux (EPEL) as well as for other operating systems.

Ansible, Inc. (originally AnsibleWorks, Inc.) was the company set up to commercially support and sponsor Ansible. Red Hat acquired Ansible in October 2015


https://www.ansible.com/how-ansible-works

What is Programming

A Farewell to Orkut

After ten years of sparking conversations and forging connections, we have decided it's time for us to start saying goodbye to Orkut. Over the past decade, YouTube, Blogger and Google+ have taken off, with communities springing up in every corner of the world. Because the growth of these communities has outpaced Orkut's growth, we've decided to focus our energy and resources on making these other social platforms as amazing as possible for everyone who uses them.
We will shut down Orkut on September 30, 2014. Until then, there will be no impact on you, so you may have time to manage the transition. You can export your profile data, community posts and photos using Google Takeout (available until September 2016). We are preserving an archive of all public communities, which will be available online starting September 30, 2014. If you don't want your posts or name to be included in the community archive, you can remove Orkut permanently from your Google account. Please visit our Help Center for any further details.
It's been a great 10 years, and we apologize to those of you still actively using the service. We hope you will find other online communities to spark more conversations and build even more connections for the next decade and beyond.

WhatsApp Messenger

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android, Windows Phone and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.
In addition to basic messaging WhatsApp users can create groups, send each other unlimited images, video and audio media messages.

Download WhatsApp

A brief history of Facebook

Mark Zuckerberg, 23, founded Facebook while studying psychology at Harvard University. A keen computer programmer, Mr Zuckerberg had already developed a number of social-networking websites for fellow students, including Coursematch, which allowed users to view people taking their degree, and Facemash, where you could rate people's attractiveness.
In February 2004 Mr Zuckerberg launched "The facebook", as it was originally known; the name taken from the sheets of paper distributed to freshmen, profiling students and staff. Within 24 hours, 1,200 Harvard students had signed up, and after one month, over half of the undergraduate population had a profile.
The network was promptly extended to other Boston universities, the Ivy League and eventually all US universities. It became Facebook.com in August 2005 after the address was purchased for $200,000. US high schools could sign up from September 2005, then it began to spread worldwide, reaching UK universities the following month.
As of September 2006, the network was extended beyond educational institutions to anyone with a registered email address. The site remains free to join, and makes a profit through advertising revenue. Yahoo and Google are among companies which have expressed interest in a buy-out, with rumoured figures of around $2bn (£975m) being discussed. Mr Zuckerberg has so far refused to sell.
The site's features have continued to develop during 2007. Users can now give gifts to friends, post free classified advertisements and even develop their own applications - graffiti and Scrabble are particularly popular.
This month the company announced that the number of registered users had reached 30 million, making it the largest social-networking site with an education focus.
Earlier in the year there were rumours that Prince William had registered, but it was later revealed to be a mere impostor. The MP David Miliband, the radio DJ Jo Whiley, the actor Orlando Bloom, the artist Tracey Emin and the founder of Wikipedia, Jimmy Wales, are among confirmed high-profile members.
This month officials banned a flash-mob-style water fight in Hyde Park, organised through Facebook, due to public safety fears. And there was further controversy at Oxford as students became aware that university authorities were checking their Facebook profiles.
The legal case against Facebook dates back to September 2004, when Divya Narendra, and the brothers Cameron and Tyler Winklevoss, who founded the social-networking site ConnectU, accused Mr Zuckerberg of copying their ideas and coding. Mr Zuckerberg had worked as a computer programmer for them when they were all at Harvard before Facebook was created.
The case was dismissed due to a technicality in March 2007 but without a ruling.