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03: Kubernetes (i.e. Minikube) – deploy a spring-boot app

This extends Kubernetes (i.e. Minikube) – deploy a node js service. Get the Spring-boot app going first Step 1: Go to https://start.spring.io/ to create a skeleton spring-boot application. Click on “generate” to download the “minikube-springboot.zip” file. Step 2: Unzip “ … Read more ›...

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02: Kubernetes (i.e. Minikube) – deploy a node js service

This extends Install Kubernetes (i.e. minikube) on Mac. Project Structure Step 1: Create a new “project” foleder “minikube-js” under the projects folder. In that folder create minikube-js/server.js file. Step 2: Create the “ … Read more ›...

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01: Install Kubernetes (i.e. minikube) on Mac

Learn Docker first. Getting started with Docker. Learn the Kubernetes basics at Kubernetes & Docker interview Questions & Answers Pre-requisites: brew is installed: Homebrew Homebrew Cask Docker Download and install Docker for Mac. Virtualization support Check if your system supports VT-x/AMD-v virtualization by running this command: If the command returns...

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Kubernetes & Docker interview Questions & Answers

Q1. What is the difference between Docker & Kubernetes? A1. This is like comparing apples to oranges. Docker & Kubernetes can function without each other, and also both can compliment each other. Docker enables us to run, create and manage containers on a single operating system. … Read more ›...

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6 Distributed systems interview questions & answers

Q1. What are the key requirements to be a distributed system? A1. A distributed system must satisfy the following 3 characteristics. 1) The computers or nodes operate concurrently. 2) The computers or nodes fail independently, … Read more ›...

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AWS Identity & Access Management (i.e. IAM) interview Q&As

Q1. What is IAM? A1. IAM stands for Identity & Access Management. AWS Identity and Access Management (IAM) is a web service that helps you securely control access to AWS resources. You use IAM to control who is authenticated (i.e. … Read more ›...

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5 – 8 real life examples of SAR technique for Java developers to standout in job interviews

The open-ended questions give you a great opportunity to promote your strengths and accomplishments. SAR (Situation-Action-Result) technique examples. This extends 1 – 4 real life examples of SAR technique. Example 5: Design Situation: The business wants to rapidly review & … Read more ›...

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03: Getting started with Jenkins build triggers on Docker tutorial

This extends the 02: Getting started with Jenkins Multibranch pipeline on Docker tutorial. The focus on this tutorial is the build triggers where the Jenkins pipelines can be executed based on different triggers as opposed to just clicking on the “Build Now” … Read more ›...

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02: Getting started with Jenkins Multibranch pipeline on Docker tutorial

This extends 01: Getting started with Jenkins on Docker tutorial. In this tutorial we will be using Jenkins to “checkout” an existing Scala project from “GitHub” repository, and then build the project using Maven. … Read more ›...

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01: Getting started with Jenkins on Docker tutorial

Jenkins is the most popular CI/CD server. There you create jobs that are triggered by some events (changed in a code repository, manually, etc). Those events invokes the steps like compiling to see if you can generate the executable. Then you run tests (unit tests) to confirm the desired behaviour at low-level.

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31: Docker Tutorial: Apache Spark streaming in Scala with Apache Kafka on Cloudera quickstart

This extends 27: Docker Tutorial: Apache Kafka with Java API on Cloudera quickstart. Pre-requisite: Java 8 & Kafka installed with the “MyTestTopic” as per the previous tutorials. Install scala & sbt We will install Scala 2.10.7 from “https://www.scala-lang.org/download/2.10.7.html” … Read more ›...

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30: Docker Tutorial: Apache Spark streaming in Python 3 with Apache Kafka on Cloudera quickstart

This extends Docker Tutorial: Apache Kafka with Python 3 on Cloudera quickstart Step 1: Create the pyspark streaming code in python. driver.py simple.py – receive messages from a topic Build the .egg file Step 2: Create setup.py to build the .egg file, … Read more ›...

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29: Docker Tutorial: Apache Kafka with Python 3 on Cloudera quickstart

Prerequisite: Docker is installed on your Windows or Mac, and you have a basic understanding of Docker. Docker tutorials step by step | Hadoop, Hive, Impala & Spark on Cloudera quickstart on Docker tutorials Step 1: Pull the modified image “gdancik/cloudera” … Read more ›...

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