Tag: kubernetes

Fast setup of a Java microservice project with MicroProfileStarter

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In this blog post I want to show the easy setup of an own MicroProfile/OpenLiberty project with MicroProfileStarter . From my perspective that is  very useful for new Java developers, who want to build microservices. The prerequisite is, you have installed maven and Java on your local machine.

You can use for more information the MicroProfileStarter it self and the OpenLiberty getting started documentation.

That’s fits perfect to the topic Cloud-Native. Maybe you already know, we (Niklas, Harald and I) working on the open sourced Cloud Native Starter project. That project contains sample code that demonstrates, how to get started with Cloud-Native applications and microservices based architectures. Here we use also MicroProfile/OpenLiberty.

We created a new 60 -90 min hands-on workshop with the focus on Java microservice development with MicroProfile/OpenLiberty and the deployment to Kubernetes on IBM Cloud. This workshop is perfect to get a basic understanding of the Cloud-Native and Java development topics and the combination with MicroProfileStarter is awesome for newer Java Developers.

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Definition of a Dockerfile to use bash scripts on a Windows 10 machine for our Cloud-Native-Starter workshop

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We defined a Dockerfile to create a Docker image for our Cloud-Native-Starter workshop especially for Windows 10 users. The users can now simply create a Docker image on the local Windows 10 machine and then follow the guided steps in the hands-on workshop documentation and use the bash scripts. The reason why we don’t build a Docker image and share the image on Dockerhub is, we want to provide users the freedom of own customizations.

These are some challenges we had during the testing of the Dockerfile definition:

  • File sharing for Docker images on Windows
  • Docker port forwarding
  • Docker in Docker
  • Istio Virtual service configuration
  • Linux tools missing

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Handle mircoservice resiliency with MicroProfile – a short teaser video

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Today I finished the last part of my   “Let’s get started with cloud native Java applications on Kubernetes hands-on workshop”  3-minutes teaser videos series on youtube.

This short 3-minute teaser video is about: Handle mircoservice resiliency with MicroProfile in context of the cloud native starter project and workshop on GitHub project.

Check it out:

You can get more detailed information about the topic: Developing resilient Microservices with Istio and MicroProfile in one of the blog posts of @Niklas.

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Traffic management in Kubernetes with Istio – a short teaser video

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Today it is time for Part 5 of my   “Let’s get started with cloud native Java applications on Kubernetes hands-on workshop”  3-minutes teaser videos series on youtube.

This short 3-minute teaser video is about: Traffic management in Kubernetes with Istio in context of the cloud native starter project and workshop on GitHub project.

Check it out:

You can get more detailed information about the topic: Traffic management in Kubernetes with Istio in one of the blog posts of @Harald.

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Deploy a container image to Kubernetes – a short teaser video

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Today I recorded part 3 of my   “Let’s get started with cloud native Java applications on Kubernetes hands-on workshop”  3-minutes teaser videos series on youtube.

This short 3-minute teaser video is about: deploy a container image to Kubernetes in context of the cloud native starter project and workshop on GitHub project.

Check it out:

You can get more detailed information about the topic: deploy a container image to Kubernetes in one of my blog posts.

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Let’s get started with cloud native Java applications on Kubernetes

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Getting started with cloud native development using Microservices and Java can still be challenging. Kubernetes and Microservices are not new, but there are still a lot of possibilities to move existing or build new applications to be cloud native, especially for Java.

For this reason @Niklas and @Harald started to create an open source project, to get started with cloud native Java applications on Kubernetes. I am also contributing to this cloud native GitHub project that contains a hands-on workshop. By the way it is also released as series on IBM Developer.

In the image below you can see the stars ⭐️ of the project.

cns-likes

The sample Microservices application is not too simple and not too complex for an introduction to cloud native development with Java.

The awesome project has ongoing growing content and it already has 139 stars ⭐️ on GitHub.

I created a youtube video as a teaser of the workshop and the core project, to give a fast  3 min overview about the current state.

By the way, this video is the first 3-minute YouTube video of the teaser videos series “Let’s get started with cloud native Java applications on Kubernetes hands-on workshop” I plan to record.

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 “cf push – experience” saying

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The “cf push – experience” saying is related to simplify some of cloud native development tasks for developers. I haven’t found an official definition for that “cf push – experience” saying, so I just define one by myself. Of course, I found videos and longer implicit  descriptions and one awesome description you can find in the YouTube video Kube Your Enthusiasm — Bringing the `CF Push` Experience to Kubernetes Operators (Project Eirini) and Onsi Fakhouri did also a tweet cf push haiku a long time ago in 2015 related to cf push.

But here is my personal definition:

cf-push

“The Developers “cf push –  experience” is: Developers can focus on implementing functional requirements in a programming language and they don’t wasting additional time to extra define network or container configuration to deploy an executable application into the cloud.”

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Hot topics on hot days @DevOpsCon in Berlin

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Hot topics on hot days @DevOpsCon in Berlin

These two days were really hot and that’s why I created that motto 😉

Here are a few pictures and a brief impression of the DevOpsCon conference in Berlin. The DevOpsCon Expo in Berlin on 11 – 14 June 2019 had approximately 800 participants and provided a full program on different technologies and methods for them.

It’s important to keep a cool head on the mission-critical topic of DevOps and make the right decisions how to deploy and deliver the optimal to achieve speed of innovation. It was awesome to see that DevOps teaming works for companies, because often we had developers and operations of one company at same time at our booth.

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„Let’s get started with cloud native Java applications on Kubernetes“ Our hands-on workshop is ready to rumble!

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Our hands-on workshop: „Let’s get started with cloud native Java applications on Kubernetes“ , is ready to rumble!

cns-workshop

After all the effort Niklas and Harald did to deliver that awesome and valuable content of the “Cloud Native Starter” open sourced GitHub project, I contribute to that (ongoing) project with this hands-on workshop based on all the given great materials of blog posts, manuals and documentation which is available in the internet.

The outcome is an easy to consume hands-on workshop. The workshop  provides a wide but concentrated introduction to Java development with MicroProfile, Kubernetes, Containers, REST APIs, Traffic management, and Resiliency that is relevant for developers who want more hands-on practical cloud native development introduction of the usage of these technologies.

I would say, this workshop is a must have for beginners who start with cloud native Java applications on Kubernetes. We all put a lot of effort in this project to make that easy to consume.

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How to deploy a container to the IBM Cloud Kubernetes service

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I want to describe another way to run the  Highscores-Service of the #BlueCloudMirror game . In the game I use  IBM Cloud Foundry apps, now I want to explore IBM Cloud Kubernetes.

Note: The #BlueCloudMirror game we  @Niklas, @Harald and I made, is available as an Pattern on IBM Developer.

The first step was creating a container for the Highscores-Service,  which I described in my blog post how to build a container.

In this post I deploy my scores-service container to the IBM Cloud Kubernetes service.  This is  not a blueprint for IBM Kubernetes deployments, if you looking for a blueprint,  just take a look here. IBM Cloud documentation contains a great guide for getting started:  How to setup and use IBM Cloud Kubernetes

I share my experiences and observations with you, along with my deployment.

Let’s start with an overview of the topics I touch in this blog post:

Simplified Architecture 

kube-basic-architecture

The above picture shows a simplified architecture for the scores-service inside Kubernetes. You can see the relevant elements for the deployment. If you are interested in the details of  these elements, just click on the linked Kubernetes documentation.

The major elements:

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