Runing services with Docker

Deployment issues
- the host and port is hardcoded in the event bus
- scale services to multiple machines
- load balancing
Why Docker Containers wrap up everything that it needs for a program + how to start it.
why Kubernetes
- what is Kubernetes
  - Kubernetes is a tool for running a bunch of different containers
  - we give some configuration to describe how we want our containers to run and interact with each other
- concepts
  - master: a program to manage everything inside the cluster
  - Kubernetes forwards the request to a proper service

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