Tag: java

Be aware of “opentracinqZipkin”, when you update to “MicroProfile 3.0” using “OpenTracing” with “OpenLiberty”

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Today, just a very short note. You should be aware of opentracinqZipkin when you use  MicroProfile OpenTracing with OpenLiberty, because I noticed with the update to MicroProfile 3.0 I had a problem with usr:opentracinqZipkin-0.31. I created an issue on OpenLiberty. 

“MicroProfile 2.1 includes mpOpenTracing-1.2. MicroProfile 3.0 includes mpOpenTracing-1.3. Please make sure you are using the Zipkin sample built for mpOpenTracing-1.3. It can be downloaded at https://github.com/WASdev/sample.opentracing.zipkintracer/releases/tag/1.3”

I got that solution from Felix Wong.

But inside the server.xml will not reflect the version change, it will remaining the same feature name usr:opentracingZipkin-0.31.

<server description=”OpenLiberty Server”>
  <featureManager>
      <feature>microProfile-3.0</feature>
     <feature>webProfile-8.0</feature>
     <feature>usr:opentracingZipkin-0.31</feature>
</featureManager>
<httpEndpointid=”defaultHttpEndpoint”host=”*”httpPort=”8080″httpsPort=”9443″/>
….
</server>

I hope this was useful for you and let’s see what’s next?

Greetings,

Thomas

PS: You can try out Cloud Foundry Apps or Kubernetes on IBM Cloud. By the way, you can use the IBM Cloud for free, if you simply create an IBM Lite account. Here you only need an e-mail address.

#ibmdeveloper, #MicroProfile, #Java, #OpenTracing

A small source code update, when you use MicroProfile Health

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I just want to highlight a small change for the MicroProfile Health, because I noticed with the update to MicroProfile 3.0 that the annotation @Health is deprecated.

mp-health-dep-2.1

It took me a little bit, because it was still listed in the MicroProfile documentation .

mp-health-dep-2.1-01.jpg

But I figured out in the blog post from Philip Riecks , when you replace the annotation @Health with @Readiness and import org.eclipse.microprofile.health.Readiness that it will work:

mp-health-dep-21.-02

I hope this was useful for you and let’s see what’s next?

Greetings,

Thomas

PS: You can try out Cloud Foundry Apps or Kubernetes on IBM Cloud. By the way, you can use the IBM Cloud for free, if you simply create an IBM Lite account. Here you only need an e-mail address.

#ibmdeveloper, #MicroProfile, #Java, #Health, #Readiness

Create one Java Microservice with OpenLiberty and MicroProfile – made for beginners

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Today I created a YouTube video, where I developed one Microservice. The level of content of that video is for beginners. The video was “live” recorded and I made some minimal editing and the video takes 18 min.
The recoding is related to Java Microservices with MicroProfile and OpenLiberty in Visual Studio Code . The source code is available in the open sourced Cloud Native Starter GitHub project.

Check it out:

Maybe you are interested, how did I setup the IDE and the Project? … here are the basics.

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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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Expose and consume a REST API built with MicroProfile – a short teaser video

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Part 4 is ready for 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: expose and consume a REST API built 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: Invoking REST APIs from Java Microservices in one of the blog posts of @Niklas.

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How to build a container – a short teaser video

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I recorded a new 3-minute video for my “Let’s get started with cloud native Java applications on Kubernetes hands-on workshop” teaser video series on youtube.

This short 3-minute teaser video is about: how build a container for a miroservice in context of the cloud native starter project and workshop on GitHub.

Check it out:

You can get more detailed information about How to build a container 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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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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big open source players were “cap by hat” @w-jax

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I was at winter-jax 2018 in Munich last week. This was my first time I attended this big developer conference.

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As you can see in the headline picture, two big players in open source area with cap by hat and  IBM, RedHat booths and with Viada  😉

One major topic this week was the potential deal, IBM is planning to buy RedHat for 34 billion US dollars. This potential deal played a big part in Sebastian Meyen´s opening speech on the first day of the winter jax conference in Munich.

He highlighted the history and  Red Hat´s contribution to open source.

If you want to listen his speech in German, you can watch the sessionon youtube here  . His speech is before the keynote “Trust and confidence through chaos” from Russ Miles

By the way, I like Russ Miles´s approach to “chaos engineering” .

My very high-level free interpretation of “chaos engineering” is:

  • “Break the system, before it breaks your business!”

From my point of view “chaos engineering” is more or less comparable with testing. So, I defined more detailed, free interpretations:

  • “Don’t be afraid and learn from testing/failure”
  • “Bad news … yes, testers want to break your system, but the good news is: they will do it, before you run it in production 😉 “

Open source contribution

A very good match to the open source topic was the keynote from Christopher Ferris.

He asked the good question: Who pays for open source?  You can watch his session on youtube here

Christopher Ferris reminded us in his speech that IBM is a major player and contributer in open source, with a high involvement in Apache , Eclipse and Linux  during the creation and in development. These three projects are fundamental pillars for the open source business.

There are many other open source projects IBM contributes to, which you can find here  on the  IBM Developer site.

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Christopher Ferris during his keynote.

Open Source in AI

Also, Niklas Heidloff gave a session “Development of AI Applications without Machine Learning Skills”. In this session, Niklas also highlighted the topic open source with the Model Asset eXchange . The Model Asset eXchange contains free, deployable, and trainable code.

It is also very important to understand that these models on Model Asset eXchange are reusable for production, because they have licenses developers can verify.

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Image of the session from Niklas Heidloff. Here you can see some impressions from Niklas.

Open Source in Java

Steve Poole highlighted in his session “What’s new for Java in clouds?” that IBM open sourced OpenJ9 (Low memory footprint). Steve also reminded us in his session, that the Java community should be more active and should define the needs for cloud, machine learning and upcoming technologies like Quantum.

By the way Fernando Cejas did a session about Quantum Computing, you can check a sample here  “Quantum computing in action: IBM’s Q experience and the quantum shell game”.

IMG_2002

Moments

If you want to see our favourite moments of this conference, just visit the twitter moments from Miriam Oglesby.

Let’s see what’s next?

Greetings,

Thomas

PS: By the way, you can use the IBM Cloud for free, if you simply create an IBM Lite account. Here you only need an e-mail address.