YantraStructure

Loopback Address Loopback IP address from 127.0.0.1 to 127.255.255.254? Private Address The private address space specified in RFC 1918 is defined by the following three address blocks: 10.0.0.0/8 The 10.0.0.0/8 private network is a class A network ID that allows the following range of valid IP addresses: 10.0.0.1 to 10.255.255.254. The 10.0.0.0/8 private network has 24 host bits that can be used for any subnetting scheme within the private organization. 172.16.0.0/12 The 172.16.0.0/12 private network can be interpreted either as a block of 16 class B network IDs or as a 20-bit assignable address space (20 host bits) that can be used for any subnetting scheme within the private organization. The 172.16.0.0/12 private network allows the following range of valid IP addresses: 172.16.0.1 to 172.31.255.254. 192.168.0.0/16 The 192.168.0.0/16 private network can be interpreted either as a block of 256 class C network IDs or as a 16-bit assignable address space (16 host bits) ...

How did Hadoop get here? As the World Wide Web grew at a dizzying pace in the late 1900s and early 2000s, search engines and indexes were created to help people find relevant information amid all of that text-based content. During the early years, search results were returned by humans. It’s true! But as the number of web pages grew from dozens to millions, automation was required. Web crawlers were created, many as university-led research projects, and search engine startups took off (Yahoo, AltaVista, etc.). One such project was Nutch – an open-source web search engine – and the brainchild of Doug Cutting and Mike Cafarella. Their goal was to invent a way to return web search results faster by distributing data and calculations across different computers so multiple tasks could be accomplished simultaneously. Also during this time, another search engine project called Google was in progress. It was based on the same concept – storing and processing data in a distributed, automa...

Adding Virtualbox Guest Additions to Elementary OS  Install the following packages Step 01 : sudo apt-get install build-essential module-assistant Step 02 : sudo m-a prepare Step 03 : Insert the Guest Additions tools in the CD ROM from the VM User interface Step04  : sudo ./VBoxLinuxAdditions.run Done! it works!!!

Recently I’ve been finding myself in various conversations about  Docker  and  Linux Containers (LXC) . Most of the time the conversations eventually end up with one and the same question and that is whether we should run containers in production. Initially this post had a few paragraphs where I philosophised about readiness of the technology, but I’ve deleted those paragraphs now as the attention dedicated to containers in past year has been nothing short of amazing and more and more companies are running their Infrastructures in the containers or at least big parts of them. I’m sure this trend will continue to high degree in the future, so I’ve now removed these paragraphs and kept the technical content only. One of the (many) things which were not entirely clear to me and to the people I speak with about the topic of containers almost on daily basis is how the networking can be done and configured when using LXC. Hopefully the first blog post on this topic is going...