Microservices in Docker & Kubernetes

1. Dockerized microservices on Kubernetes
Lyon – February 8th, 2018

2. http://home.k8s.me

3. 3

4. 4

5. 5

6. Virtual Machines vs Containers
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Containers

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Docker

9. 9
Docker registry
E.g. Docker Hub

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Monoliths vs microservices

11. Containerized microservices

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Containerized microservices

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War of the container orchestrators

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Kubernetes

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Kubernetes

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Kubernetes

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Kubernetes @ Barco

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Demo app

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Demo app microservices
Frontend
Webserver
Task API MongoDB
REST

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Exercises
1. Build the example as-is, run locally, publish to Docker Hub and deploy to Kubernetes
2. Make a change to one of the services and deploy this change to Kubernetes
◦ Any change is okay – if no inspiration: for example change the color of the logo
3. Change the number of instances of the Task API service from 1 to 2
◦ Does the application keep working? Why is this?
4. Explore the Kubernetes dashboard
5. Add an additional microservice
◦ Again, anything is allowed
• If no inspiration: add a service capable of exporting the task list to a csv file
◦ Exposing a simple REST API (consumed by “Export” button added to frontend)
◦ Consuming the Task API to get the list of tasks
◦ Use the technology of your liking in this new service: e.g. NodeJs, .Net Core, Java, Python, …
◦ Build and test locally
◦ Publish to Docker Hub and run on the Kubernetes cluster

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Demo app microservices
Frontend
Webserver
Task API MongoDB
Export service
REST

22. | youtube.com/BarcoTV
| linkedin.com/company/Barco
| twitter.com/Barco
| facebook.com/Barco
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