DevOps

Ansible

Getting Started with Ansible

Reading Time: 4 minutes What is Configuration Management? Before starting with Ansible let’s discuss what configuration management is. Configuration Management (CM) is the process of handling changes in any system systematically, and it maintains the consistency of the product. It retains its consistency because it is applied over the entire lifecycle of the system. Configuration Management provides the capability of controlling and monitoring the performance of the system. Using Continue Reading

Getting Started With Mesos

Reading Time: 2 minutes In our earlier blog Introduction to Mesos , we have talked about basic idea of Mesos. And How it works and its basic terminology. Till now we have discussed the theoretical concepts to get ourselves familiar with Mesos and now we will be going to install the mesos and see how we can monitor mesos using UI, So let’s get onto it. Step1: Download Mesos Continue Reading

Introduction to Mesos

Reading Time: 4 minutes What is Mesos ? In layman’s term, Imagine a busy airport. Airplanes are constantly taking off and landing. There are multiple runways, and an airport dispatcher is assigning time-slots to airplanes to land or takeoff. So Mesos is the airport dispatcher, runways are compute nodes, airplanes are compute tasks, and frameworks like Hadoop, Spark and Google Kubernetes are airlines companies. In technical terms, Apache Mesos Continue Reading

A Java Lagom service which only consumes from Kafka topic (Subscriber only service)

Reading Time: 2 minutes Subscriber only service means an application which only consumes, does not produce. We have generally seen the applications which both produces and consumes data from a Kafka topic but sometimes we need to write an application which only consumes data i.e. consumes data from a 3rd party service. So in this blog I am going to explain how to write a Lagom service which only Continue Reading

Internationalization with Play Framework(2.6.x)

Reading Time: 2 minutes In this blog, I will demonstrate how your application can support different languages using Play Framework 2.6.0    What is Application/Website Internationalization ?   Application/Website Internationalization can be defined as a process of developing and designing an application that supports not only single language but also different languages so that it can be easily adapted by the users from any language, region, or geography. It ensures that the code base of your application is flexible enough Continue Reading

Amazon Rekognition: Welcome to Visual Recognition

Reading Time: < 1 minute We have always been captivated <3 and mesmerized 😮 by sci-fi movies like James Bond, and we dreamt of those technologies to become reality one day but here we are in the world of Artificial Intelligence and Deep Learning living at the edge of the Technology driven ecosystem. Visual Recognition has been there around for so long but there didn’t exist any product which handled Continue Reading

Send an Email Through the Amazon SES SMTP Interface with scala

Reading Time: 2 minutes The following procedure shows you how to use AWS Toolkit for IntelliJ to create an AWS SDK project and modify the scala code to send an email through Amazon SES. In this getting started tutorial, you send an email to yourself so that you can check to see if you received it. For further experimentation or load testing, use the Amazon SES mailbox simulator. Prerequisites Continue Reading

Docker : linking and working with multiple containers

Reading Time: 2 minutes Prerequisites Docker installation from here. Create an account on Docker Hub In my previous blog we had a quick overview of Docker technology. I suggest you to have a look at my previous blog for better understanding. Our application can have multiple services running in different containers. So In this blog we will know how to link multiple containers. Here we will take an example of mysql and Continue Reading

Configuring SSH Key Authentication on Linux

Reading Time: 3 minutes Now Days it is very convenient to use Remote Desktop Protocol(RDP) for accessing remote system over Internet, specially server systems(either client to server or server to server), although it is very convenient and easy way to access remote systems but it may cause big loss as it may provide an opportunity for remote attackers to guess logon credentials of client. There may present many ways Continue Reading

Dealing With Deltas In Amazon Redshift

Reading Time: 5 minutes Hi, In this blog I would like to discuss a scenario of implementation of Deltas in Amazon Redshift using spark-redshift. Prior to that I would like to make you aware of Amazon Redshift, spark-redshift library and integration of Spark with Redshift. It is assumed that you have a fair knowledge of programming in Apache Spark and Spark SQL. You may refer to the documentation links Continue Reading

Deploying a 2 node Elasticsearch cluster on ec2 instance.

Reading Time: 4 minutes In this blog we will focus on two major things : 1). Steps required to create a two node elasticsearch (v5.2 released on 31.Jan.2017) cluster on Linux instances (with CentOs as the default OS). 2). Attaching additional volume to the instances and making changes in elasticsearch configurations so that all the elasticsearch related data will be stored on the mounted volumes, since the default storage Continue Reading

Serverless Architecture-Blog-2 (AWS Lambda)

Reading Time: 3 minutes In our last blog, we have seen the serverless introduction, Continuing that in this blog we will implement serverless using AWS lambda. AWS Lambda is a compute service that lets you run code without provisioning or managing servers. AWS Lambda executes your code only when needed and scales automatically, from a few requests per day to thousands per second.