Cors and Node-RED using a simple forwarding server

When you use Node-RED on IBM Cloud during hackathons you will notice REST calls in flows cannot be directly invoked from a web application. The reason for this is mostly that cors (cross-origin resource sharing) is not enabled for the Node-RED server. This blog post is a simple workaround for this problem.

I developed this workaround to have full control and be very flexible during a hackathon, when using Node-RED for prototyping and building integrations to services and web-applications, without changing Node-RED settings or using cors browser enabler.

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Being @Hacknext a Hackathon and Conference to create impact in InsurTech

I was one of the coaches at the sold out Hacknext in Munich, hosted at Kohlebunker, from  7. March – 9. March 2019 and in this blog post I want to share my personal impressions.

From my point of view it was great to see: young people build relevant solutions for the future with the latest technologies on cloud.
Best wishes to all hackers who attended and every success for the future.

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Hacknext  includes a hackathon and conference related to the insurance business called InsurTech.

In other words the hackers, attendees and coaches were spending three days in the Kohlebunker for:

  • Taking on challenges together, approximately 110 hackers organized into 20 teams
  • Benefiting from professional exchange on InsurTech with approximately 60 conference attendees
  • Providing valuable support from the API coaches

The challenges

Each of the hacker teams had to address a minimum of one of these challenges:

  • Using smart data and its benefits for insurance
  • Building the future of digital bancassurance
  • (R)evolutioning of the insurance agent
  • Rethinking retirement

In the following YouTube video you get a short impression of the great atmosphere at the hacknext:

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How to deploy a container to the IBM Cloud Kubernetes service

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 hereIBM 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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#BlueCloudMirror Game – highscores

I am a part of the team along with @Niklas and @Harald , who created and developed the fun Blue Cloud Mirror Game. 

game

This is my first blog  about this topic, and I will follow with future posts to detail the different parts of highscores (scores) and the technologies and components involved.

You can also take a look at other existing information:

The motivation for the highscores (scores)

If you play a game, you usually want to compare yourself with others. To do this, you simply have to save scoring information somewhere and provide access for the players who want to see the highscores, even if they do not play the game.

The high-level architecture overview on scores

The objective was to implement this on the cloud with state-of-the-art runtimes, services, security topics, to cover microservices, and to have an easy scalable cloud architecture.
I developed the scores part and the functions-api for users.

scores-architecture

The Game, Scores Service UI and the Highscores webapp are hosted on different runtimes and for the execution they will be loaded into a browser.

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Cloud Foundry on top of Kubernetes @IBM Cloud – a small test

This blog is related to the topics Cloud Foundry Enterprise Environment , serverless , code patterns and the IBM Coder Program.

I just want to move an existing Cloud Foundry app on IBM Cloud to the new IBM Cloud Foundry Enterprise Environment,which instantiates Cloud Foundry on top of Kubernetes. You can find more details about this IBM Cloud offering in this blog post “An on-demand, single-tenant Platform-as-a-Service on IBM Cloudfrom IBM.

Motivation

Maybe you noticed the section Combined Power in my blog post Operations and Developers side by side @“Continuous Lifecycle” and “Container Conf” related to Simon Moser’s session CF3 – Combining the Power of Cloud Foundry and Kubernetes” ? In this blog post you can read more about the motivation to combine the power.  Also you can find out which open source projects ( eirini for example) are relevant.

Based on  Simon Moser´s speech, I was motivated to check out the Cloud Foundry Enterprise Environment on IBM Cloud.

I started my test of moving an existing Could Foundry App. I have chosen to move the app instance from one of my modified code patterns . My selection was the Predictive Industrial Visual Analysis. This code pattern has a big focus on serverless, but I will write more about the serverless part in the near future.

Let’s get started: How do I move an existing Cloud Foundry app?

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Promo code and free Kubernetes Cluster @IBM Cloud

You may have received a promo code when you attended a conference, meetup, or hackathon, but you have no experience with IBM Cloud yet, and you want to access the free Kubernetes cluster in the IBM Cloud as soon as possible, because you can use the cluster for your own “playing” and “testing”.

In this situation you can educate yourself with the badge IBM Cloud Essentials related to IBM Cloud before you access the IBM Cloud. BTW, this way would be the best choice ;-). With IBM Cloud Essentials  you have free education and an official badge.

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Or you can enter your promo code and create a Kubernetes Cluster directly.
I created a short youtube video related to this fastpass :

  • How to enter a promo code?
  • How to instantiate a free Kubernetes Cluster ?

If you don’t want to watch the video, these are the simple steps you have follow:

Register:

Insert promo code:

  • Select “Manage->Billing” in the menu on the IBM Cloud WebUI
  • Insert your promo code

Create free Kubernetes Cluster:

  • Select the Kubernetes service from the catalog and press create
  • Choose the data center location, these indicate where the cluster will be instantiated
  • Select free cluster
  • Press create
  • Follow the instructions in the “Access” tab, to access your cluster with kubectl from your local pc.

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

Greetings,

Thomas