0 comments on “Mesos and Marathon REST API via cURL — A Hello World Example”

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…

0 comments on “Vagrant on CentOS 7 – Setting up Test Environments the easy Way”

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.…

1 comment on “Jenkins Part 7: Pipeline as Code”

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…

2 comments on “Getting Started with DC/OS on Vagrant”

Getting Started with DC/OS on Vagrant

In the course of this Hello World style tutorial, we will explore DC/OS, a Data Center Operating System developed and open sourced by Mesosphere with the target to hide the complexity of data centers. We will install DC/OS on your local PC or Notebook…

1 comment on “Jenkins Part 6: Automated Cross Browser Testing via BrowserStack”

Jenkins Part 6: Automated Cross Browser Testing via BrowserStack

With the BrowserStack cloud-based solution, there is no need to buy many different hardware types for testing your web site for many different mobile devices and operating systems. In this blog post, we will learn how to integrate BrowserStack-based automated cross browser tests…

1 comment on “Testing any Browser on any Hardware using BrowserStack – A Protractor Cross Browser Testing Example”

Testing any Browser on any Hardware using BrowserStack – A Protractor Cross Browser Testing Example

This time we will learn how to test any web site (including your front end software) using many different Internet browsers by integrating a cloud-based cross browser test solution named BrowserStack. We will perform Protractor tests for AngularJS using the…

0 comments on “Jenkins Part 5.1: Using the Job DSL for automatic Creation of Jenkins Jobs”

Jenkins Part 5.1: Using the Job DSL for automatic Creation of Jenkins Jobs

Today, we will learn how to use the Jenkins Job DSL Plugin to create new Jenkins jobs at a push of a button. We will show how we can use Groovy scripts for defining a "Hello World" Jenkins freestyle project and…

1 comment on “Jenkins Part 4.2: Code Quality Tests via Checkstyle”

Jenkins Part 4.2: Code Quality Tests via Checkstyle

Today, we will show how to use Checkstyle for improving the style of Java code. First, we will add Checkstyle to Gradle in order to create XML reports for a single build. Jenkins allows us to visualize the results of more…

2 comments on “Jenkins Part 4.1: Functional Java Tests via JUnit”

Jenkins Part 4.1: Functional Java Tests via JUnit

You also think that functional tests are one of the most important ingredients for delivering high quality software? You share my opinion that we should help the developer automating this task in order to get comparable results and to receive meaningful trend reports? I…

7 comments on “Jenkins Part 3.1: periodic vs triggered Builds”

Jenkins Part 3.1: periodic vs triggered Builds

Today, we will make sure that Jenkins will detect a code change in the software repository without manual intervention. We will show two methods to do so: Periodic Builds via Schedulers: Jenkins periodically asks the software repository for any code changes…

2 comments on “Getting Started with Mesos Resource Reservation & Marathon Watchdog – A “Hello World” Example”

Getting Started with Mesos Resource Reservation & Marathon Watchdog – A “Hello World” Example

Today, we will introduce Apache Mesos, an open source distributed computing system with the target to allow applications to run on a computer cluster as if it was running on a single computer. On top of a Mesos cluster, we…

5 comments on “Jenkins Part 2: automated Code Download and Build (Gradle + Maven)”

Jenkins Part 2: automated Code Download and Build (Gradle + Maven)

NEW (2017-01-02): you now can immediately start with part 2 (this post) without going through the steps of part 1. A corresponding pre-installed Docker image is provided. NEW (2017-01-05): I have added the Maven build path with a fat executable…

10 comments on “Jenkins Part 1: Installation the Docker Way”

Jenkins Part 1: Installation the Docker Way

In this blog post, we will deploy and get started with Jenkins, the most popular open source tool for Continuous Integration and Continuous Deployment. As a modern way of installing, we install a Docker host and deploy a Jenkins Docker…

2 comments on “Kibana “Hello World” Example – Part 3 of the ELK Stack Series”

Kibana “Hello World” Example – Part 3 of the ELK Stack Series

Today, we will introduce Kibana, a data visualization open source tool. As part of Elastic's ELK stack (now called Elastic stack), Kibana is often used to visualize logging statistics and for management of the Elastic Stack. However, in this Tutorial, we…

2 comments on “Elasticsearch “Hello World” Example – Part 2 of the ELK Stack Series”

Elasticsearch “Hello World” Example – Part 2 of the ELK Stack Series

In the last blog post, we have explored Logstash, a tool for collecting and transform log data from many different input sources. Today, we will explore Elasticsearch, a scheme-less noSQL database with a versatile ("elastic") search engine. We will perform…

8 comments on “Logstash “Hello World” Example – Part 1 of the ELK Stack Series”

Logstash “Hello World” Example – Part 1 of the ELK Stack Series

Today, we will first introduce Logstash, an open source project created by Elastic, before we perform a little Logstash "Hello World": we will show how to read data from command line or from file, transform the data and send it back to…

0 comments on “How to set up Docker Monitoring via cAdvisor, InfluxDB and Grafana”

How to set up Docker Monitoring via cAdvisor, InfluxDB and Grafana

Have you ever tried to monitor a docker solution? In this blog post, we will discuss three open source docker monitoring alternatives, before we will go through a step by step guide of a docker monitoring alternative that consist of the components Google cAdvisor as…

9 comments on “Docker HTTP Proxy and DNS Configuration Cheat Sheet (now includes automatic HTTP Proxy detection)”

Docker HTTP Proxy and DNS Configuration Cheat Sheet (now includes automatic HTTP Proxy detection)

This blog post provides a little cheat sheet on running a Linux host with or without a Docker client behind HTTP proxies. For Ubuntu and similar Linux distributions, we will also show how to detect the proxy available and adapt…