Docker & Kubernetes Overview

Virtual Machines. Source: https://www.docker.com/resources/what-container
Containers. Source: https://www.docker.com/resources/what-container
Image source: https://docs.docker.com/get-started/overview/
  • Availability — Kubernetes clustering has a very high fault tolerance built-in, allowing for extremely large scale operations. Kubernetes provides a framework o run distributed systems resiliently. Imagine that in a production environment you need to manage containers that run the applications and ensure that there is no downtime, for example, if a container goes down, another container needs to start. Kubernetes can do that for you.
  • Auto-scaling — Kubernetes can scale up and scale down based on traffic and server load automatically. If your application is receiving too many requests, your app can be automatically scaled up, and when the number of requests decreases, your app will be automatically scaled down.
  • Self-healing — Kubernetes can restart containers that fail, replace containers, kill containers that don’t respond to your user-defined health check, and doesn’t advertise them to clients until they are ready to serve.
  • Secret and configuration management — Kubernetes lets you store and manage sensitive information, such as passwords, OAuth tokens, and SSH keys. You can deploy and update secrets and application configuration without rebuilding your container images, and without exposing secrets in your stack configuration.
  • Storage orchestration — Kubernetes allows you to automatically mount a storage system of your choice, such as local storages, public cloud providers, and more.

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