What is Kubernetes and why do I need it?
By now, you should have a firm understanding of what containers are and how to build and run containers using Docker. However, the way we were running containers using Docker was not optimal from a production standpoint. Let me give you a few considerations to think about:
- As containers are portable, they can run on any machine that runs Docker just fine. Multiple containers also share server resources to optimize resource consumption. Now, think of a microservices application that comprises of hundreds of containers. How will you choose what machine to run the containers? What if you want to dynamically schedule the containers to another machine based on resource consumption?
- Containers provide horizontal scalability as you can create a copy of the container and use a Load balancer in front of a pool of containers. One way of doing this is to decide upfront and deploy the desired number of containers, but that isn't optimal...
