For a quick test of horizontal autoscaling of an NginX deployment, we need the following ingredients: a metrics server installation to be able to measure the POD's CPU an nginx deployment with a CPU reservation an auto scaler configuration a…
Angular 6 Docker Example
In this Angular Docker Example, we will take an existing Angular 6 application and run it in a Docker container. We will show, how to create a Docker image in a modern two-stage process. We then will spin up the application…
Mesos and Marathon REST API via cURL — A Hello World Example
In this hello-world style blog post, we will learn how to create load balanced Docker services in an open source DC/OS & Mesos environment. For that, we will perform Mesos and Marathon REST API calls using simple cURL commands. First, we will…
Testing the Hetzner Cloud API via cURL — IaaS Automation
In this blog post, we will be testing the Hetzner Cloud API. As a "Hello World" example, we will learn how to add an API key to a project and use the API key to do the following: add an…
Getting Started with DC/OS on AWS
In the step-by-step tutorial Getting Started with DC/OS on Vagrant, we have learned how to install a MesosPhere DC/OS data center operating system locally. This time, we will install a DC/OS system on AWS Cloud: existing AWS CloudFormation templates will help us create…
Angular Universal Docker Example (Angular 4 Universal CLI)
In this previous blog post, I have shown how to dockerize an Angular CLI application using NginX. However, the shown method has worked only for classical, client-side rendered Angular projects. In the current post, we will show an Angular Universal…
Angular Universal CLI – Step-by-Step Example with REST Client
This time we will learn how to create a small Angular Universal CLI project that is using the WordPress REST service to retrieve and display the title and content of a WordPress blog post. Angular Universal CLI combines the Universal…
Behavior-Driven Angular – Part 2: Inserting REST Data as „innerHTML“ into a Web Application
Today, we will extend the behavior-driven development example of the previous blog post and add the blog content to the document. Like last time, we will retrieve the HTML content from the WordPress API. Sounds easy, right? We will see that…
Angular 4 Docker Example – for Angular CLI projects
Check out a new Angular 4 Docker Example that has also been tested with Angular 6 here. In this Hello-World-like tutorial, we will show how to run Angular 4 applications that have been created with Angular CLI in a Docker container.…
Behavior-Driven Angular – part 1: Consuming a RESTful Web Service with Angular 4
In this step-by-step tutorial, we will follow a behavior-driven development approach to create an Angular 4 application from Angular CLI. The hello-world-like application will consume the WordPress REST API and it will display a blog post title. We will create…
Angular end to end Testing
- Angular e2e Protractor Tests on Systems without GUI applied to static and dynamic Web Pages - In this blog post, we will show how to perform end-to-end (e2e) tests with Angular 4: first, we will apply Protractor end to end…
JHipster: Exploring and Improving the Spring Boot REST API
In our last blog post, we have created a simple blog application using JHipster, which is a Yeoman based code generator for Angular and Spring Boot. This time, we will explore and improve the Spring Boot REST API that is generated…
Hello Java Hipster: Angular 4 and Spring Boot
In this blog post, Java Hipster will help us creating a mini blog application based on Angular 4 and Spring Boot. Angular is a popular framework for creating reactive single page applications, while Spring Boot is a robust java-based backend framework…
Angular 4: Automatic Table of Contents
In this step by step tutorial, we will go through the process of creating a two-level automatic Table of Contents by adding Angular Typescript/javascript code. We will perform following steps: We will discuss alternative solutions. We will start an Angular…
Angular 4 Universal: Boosting Performance through Server Side Rendering
This time we will show, how to use server side rendering with Angular 4 (or Angular 2). Like in my previous blog post, we will consume a RESTful Web Service with Angular 4. However, the web page will be displayed…
Vagrant on CentOS 7 – Setting up Test Environments the easy Way
After stumbling upon several guides still describing a Vagrant installation via a RubyGem - which is no longer supported - the following article was created and will provide a quick setup guide on how to setup Vagrant on CentOS 7.…
Angular 6 REST API Example — Angular 6 Consume REST API — Step-by-Step
Angular 6 is available, so I have decided to bring my instructions about Consuming a REST Service with Angular to the next level. In this step-by-step hello-world-style tutorial, you will be lead through following steps: installation of Angular CLI v6 in a CentOS docker container retrieval of HTML code data from the WordPress API display of the retrieved HTML code in a browser
Angular 4 Hello World Quickstart
In this hello world style tutorial, we will follow a step by step guide to a working Angular 4 application. We will also be able to demonstrate the two way binding feature, which will make sure that the browser reflects…
Jenkins Part 3.2: Trigger a downstream Job or Workflow with Hand-over of Parameters
This blog post will lead you through the steps how to trigger a downstream Freestyle job or Pipeline workflow from an upstream Freestyle project. We will also show how to pass a parameter from Freestyle project to the downstream workflow…
Jenkins Part 7: Pipeline as Code
In this blog post, we will introduce the Jenkins Pipelines, an increasingly popular plugin that helps defining versatile Jenkins workflows as Groovy code. Traditionally, Jenkins is administered by a graphical Web interface. Now, the Pipeline plugin allows teams and DevOps…
