Kubernetes is an open-source system for automating deployment, scaling, and management of containerized applications. It was developed by Google and released in 2015. Kubernetes provides container orchestration by automatically distributing and managing containers across a cluster of nodes. It handles tasks like scheduling, deployment, health monitoring, and scaling. For example, Kubernetes was used by Pokemon Go to automatically scale their systems horizontally in response to unexpectedly high traffic after launch, preventing server crashes.

1. Kubernetes

2. History
• It is Greek word for “governor”, “helmsman” or “captain”.
• Developed by Google.
• Original code name was “Project Seven” of Nine (a Star Trek Character).
• Written in Go.
• Released v 1.0 on July 21st, 2015.

3. Containers

4. Problem with Container
• Communication with each other: While scaling is not tough but have to configure
them manually to communicate because it will be of no use if the containers could not
communicate with each other.
• Deployed appropriately: If containers are deployed at random places (one in one
particular cloud and other somewhere else) then management becomes headache like
configuring IPs and ports.
• Autoscaling: It does not support auto scaling.
• Distributed Traffic is still challenge.

5. Solution with Kubernetes
• Automatic Binpacking : It package your application and automatically places containers based on
requirements and resources available.
• Service Discovery & Load Balancing: It automatically configure IPs and port in containers and
manage traffics as well.
• Storage Orchestration: You can mount storage system of your choice. It can be local storage or
cloud-based AWS storage.
• Self-Healing: If any of your container fails then Kubernetes automatically restart that container, it
will create new container and replace with crashed one.
• Horizontal Scaling.
• Automatic Rollbacks & Rollouts

6. Use Case
• PokemonGo the famous game of 2017 for android and iOS devices.
• It has 500M+ downloads and has an 20M+ active users.
• Initially it was only launched in NA, Australia & New Zealand.
• Expectation was that they can handle up to 5 times the traffic afterwards the server will crash.
• After the release of app, the traffic came 50 times of what they have predicted.
• Kubernetes rescued the Pokemon as it can automate both vertical and horizontal scaling at ease.

7. THANK YOU!