OpenSSH server – Enable and secure on Ubuntu 16.04 LTS
The OpenSSH server can authenticate users using the standard methods supported by the ssh protocol: with a password; public-key authentication, using per-user keys; host-based authentication, which is a secure version of rlogin’s host trust relationships using public keys; keyboard-interactive, a generic challenge-response mechanism that is often used for simple password authentication but which can also […]
Continue Reading...NodeJS install on Ubuntu 16.04 LTS (Xenial Xerus)
Node.js is an open-source, cross-platform JavaScript runtime environment for developing a diverse variety of tools and applications. Although Node.js is not a JavaScript framework, many of its basic modules are written in JavaScript, and developers can write new modules in JavaScript. The runtime environment interprets JavaScript using Google’s V8 JavaScript engine. — Wikipedia For this […]
Continue Reading...Google Straps Aclima Sensors To Street View Cars To Map Air Pollution
If a city knows what intersections are full of smog, it could add trees or change stop light schedules to improve the air its citizens breathe. Google Earth’s Outreach program that equips non-profits and public-benefit organizations with data wants to give the world these insights. So today, Google revealed that it’s been working with SF […]
Continue Reading...Openstack HEAT tutorials: 3. Autoscaling with Ceilometer
The real power of Heat is creating autoscaling resources which automatically scale up/down resources based on Ceilometer metrics. In the example below, Heat will create an autoscaling group with a minimum of 1 instances and a maximum of 5 instances (at launch time it will create only one instance) and will adjust the number of […]
Continue Reading...Openstack HEAT tutorials: 2. Creating multiple resources of the same type using autoscaling group
This example will show you how to create multiple resources of the same type using autoscaling groups. The real power of autoscaling groups is to use them together with scale-up/down policies in order for Openstack to automatically create new instances (scale-up) or delete instances (scale-down) based on a chosen metric. For example, when the average […]
Continue Reading...Openstack HEAT tutorials: 1. Deploying an instance with haproxy installed and configured for basic HTTP load balancing
This is a an example of HEAT template for deploying an instance with haproxy installed and configured for basic HTTP load balancing. Below you my see the script which is composed of three sections: 1. Template format section This template is written AWS CloudFormation (CFN) format. This is typically expressed in JSON format. The template […]
Continue Reading...Openstack Summit, Vancouver – Day 2 (May 2015)
Mark Collier, COO at Openstack starts the day going a little deeper into Openstack’s architecture than on Day 1 explaining to the audience that the platform not only supports the major hypervisors, but also bare-metal implementations. This fact leading nicely onto the first of the customer evidence sessions with Collier introducing James Penick, Cloud Architect […]
Continue Reading...Performance and Scale in Cloud Computing
As companies move computing resources from premises-based data centers to private and public cloud computing facilities, they should make certain their applications and data make a safe and smooth transition to the cloud. In particular, businesses should ensure that cloud-based facilities will deliver necessary application and transaction performance—now, and in the future. Much depends […]
Continue Reading...Differences between Shared Hosting, VPS Hosting, and Dedicated Hosting
Difference between a Virtual Private Server and a Dedicated Server Cloud computing is the latest buzzword in the internet space. As businesses try to find ways to cut costs due to increased competition and pressure on bottom lines, Virtual Private Servers, also known as cloud servers, have become quite popular due to their cost-effectiveness as […]
Continue Reading...When to use cloud computing vs. dedicated servers
It’s a decision that every company, CIO, and entrepreneur faces: where to host all that data. In a world where we rely on computing for everything we do, we want… no… we need our data to be hosted in an environment that is safe, secure, easily accessible, and at a relatively low cost. With the […]
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