Knoldus Blogs

Change AWS EC2 Instance Key Pair without stopping the Instance

March 29, 2018July 24, 2018DevOpsAmazon EC2, AWS

Reading Time: 2 minutes If you landed on this blog post then I guess you might be looking for a way to change the Key pair associated with your AWS EC2 Instance without stopping the instance or you’re just following our blog posts 🙂 Either way, I’ll try to explain the easiest way to do just that in this blog post. Let’s start by creating a new Key pair Continue Reading

AWS | Scaling with Amazon ECS

January 5, 2017January 5, 2017Amazon, Amazon EC2, AWS, AWS Services, Scalaamazon, Amazon EC2, amazon ec2 container service, amazon ecs, amazon ECS cluster, Amazon Services, AWS, scaling containers/tasks through amazon ECS, scaling EC2 instance through amazon ECS, Scaling with Amazon ECS

Reading Time: 3 minutes In my last post regarding AWS, I had explained how to launch Amazon ECS cluster including cloud formation, VPC and subnet creation, ELB and ECS security group creation, auto scaling group, launch configuration, elastic load balancer creation with the help of sample app by creating a task definition, scheduling tasks and configuring a cluster through Amazon ECS First Run Wizard. In this blog, I will Continue Reading

AWS | Introduction to Amazon EC2 Container service

December 30, 2016January 5, 2017Amazon, Amazon EC2, AWS, AWS Services, Scalaamazon, Amazon EC2, amazon ec2 container service, amazon ecs, Amazon Services, AWS, introduction to amazon ECS

Reading Time: 3 minutes What is Amazon ECS (EC2 Container Service)? Amazon EC2 Container Service (ECS) is a highly scalable, high performance container management service that supports containers and allows you to easily run and manage Docker enabled applications across a cluster of Amazon EC2 instances. And now you guys are thinking, but what does that mean? It means that the same Docker containers that you currently use will Continue Reading

Play 2.4.X : Microservice Architecture using Play and Scala

June 15, 2015Architecture, Microservices, Play 2.4.X, Play Framework, Scala, Web, Web ServicesAmazon EC2, Architecture, Clean code, Code Quality, Microservice architecture design, Microservices, Multi Project Builds, play, Play framework, REST, sbt, scala, Testing, Web

Reading Time: < 1 minute Playing-Microservices This blog describes a basic Microservice architecture design using Play 2.4.X and Scala. The big idea behind microservices is to architect large, complex and long-lived applications as a set of cohesive services that evolve over time. The term microservices strongly suggests that the services should be small. In short, the microservice architectural style is an approach to developing a single application as a suite Continue Reading

AWS Services: AWS SDK on the Scala with Play Framework

April 19, 2015April 19, 2015Akka, Amazon, Amazon EC2, AWS, AWS Services, Bootstrap, Future, Play FrameworkAkka, amazon, Amazon EC2, Amazon Services, AWS SDK, Bootstrap, Clean code, Code Quality, Play framework, S3

Reading Time: 3 minutes playing-aws-scala The following blog and attached code represent a simple example of Amazon Web Services in the Scala way with Play Framework using AWScala but in this blog I have implemented only Amazon Simple Storage Service (Amazon S3) functionalities. AWScala: AWS SDK on the Scala REPL AWScala enables Scala developers to easily work with Amazon Web Services in the Scala way. Though AWScala objects basically Continue Reading

Remote profiling using SSH Port Forwarding (SSH Tunneling) on Linux

July 28, 2014July 24, 2018Agile, Amazon EC2, ArchitectureAgile, Amazon EC2, Architecture, java, profiling, remote

Reading Time: < 1 minute In this blog post I’ll lay out few steps that are needed for remote profiling using SSH Port Forwarding (SSH Tunneling) using Yourkit profiler. Steps to be followed on remote machine: 1) Download Yourkit profiler from official Yourkit website. 2) Extract the downloaded file anywhere. 3) What we need to do now is find the file named libyjpagent.so in the extracted folder corresponding to Continue Reading

Running standalone Scala job on Amazon EC2 Spark cluster

September 9, 2013Agile, Amazon EC2, Cloud, Scala, SparkAmazon EC2, cloud computing, scala, Spark

Reading Time: 2 minutes In this blog, I would explain how to run a standalone Scala job on Amazon EC2 Spark cluster from local machine. This is a simple example to process a file, which is stored on Amazon S3. Please follow below steps to run a standalone Scala job on Amazon EC2 Spark cluster: 1) If you have not installed Spark on your machine, please follow instructions from Continue Reading