Jargons - Docker - Kubernetes

I found this katacoda course practical useful for this basics

• Containers - Linux Process
• Docker - Type of container
• Kubernetics - For orchestrating containers
• Kuberflow - Deploy Machine Learning workloads using Kubeflow on Kubernetics

Kubernetes vs docker

• A fundamental difference between Kubernetes and Docker is that Kubernetes is meant to run across a cluster while Docker runs on a single node. 
• Kubernetes is more extensive than Docker Swarm and is meant to coordinate clusters of nodes at scale in production in an efficient manner

Ref - Link 

Ref - Link

The container lifecycle managed by docker includes :

𝗨𝘀𝗲𝗿 --> 𝗱𝗼𝗰𝗸𝗲𝗿 𝗰𝗺𝗱 --> 𝗱𝗼𝗰𝗸𝗲𝗿 𝗱𝗮𝗲𝗺𝗼𝗻 --> 𝗿𝘂𝗻𝗰 --> 𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿𝘀

Let's see the container lifecycle in k8s using docker-engine:

𝗞𝘂𝗯𝗲𝗹𝗲𝘁 --> 𝗗𝗼𝗰𝗸𝗲𝗿𝘀𝗵𝗶𝗺 --> 𝗗𝗼𝗰𝗸𝗲𝗿 --> 𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿𝗱 --> 𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿𝘀

The new Kubernetes containers lifecycle architecture includes :

𝗞𝘂𝗯𝗲𝗹𝗲𝘁 --> 𝗰𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿𝗱 + 𝗖𝗥𝗜 𝗣𝗹𝘂𝗴𝗶𝗻𝘀 --> 𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿𝘀

Linux containers in 500 lines of code

why containers? pic.twitter.com/ykSaiWqvTN

— 🔎Julia Evans🔍 (@b0rk) February 4, 2020

Containers Basics

Docker Questions & Answers

• A new way to create things like virtual machines
• Custom images based on other images, Lightweight images
• Create things in a contained environment

Deployment Tips

• Expose only required ports
• Plan for App restart on crash

Docker Perspectives

• With Docker, resources shared between containers
• Infra that surrounds lxc
• Resolve works on my machine problem, ease deployments, shuffle between systems

Happy Learning!!!