Note_Tech

All technological notes.

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AWS - Container

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• AWS - Container
  • Docker
    • Docker Repositories
    • Docker vs. Virtual Machines
  • Docker Containers Management on AWS

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Docker

• Docker

  • a software development platform to deploy apps

• Apps are packaged in containers that can be run on any OS

  • Apps run the same, regardless of where they’re run
  • Any machine
  • No compatibility issues
  • Predictable behavior
  • Less work
  • Easier to maintain and deploy
  • Works with any language, any OS, any technology

• Use cases:

  • microservices architecture,
  • lift-and-shift apps from on-premises to the AWS cloud, …

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Docker Repositories

• Docker images are stored in Docker Repositories

• Docker Hub (https://hub.docker.com)

  • Public repository
  • Find base images for many technologies or OS (e.g., Ubuntu, MySQL, …)
• Amazon ECR (Amazon Elastic Container Registry)
  • Private repository
  • Public repository (Amazon ECR Public Gallery https://gallery.ecr.aws)

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Docker vs. Virtual Machines

• Docker is ”sort of” a virtualization technology, but not exactly
• Resources are shared with the host => many containers on one server

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Docker Containers Management on AWS

• Amazon Elastic Container Service (Amazon ECS)

  • Amazon’s own container platform

• Amazon Elastic Kubernetes Service (Amazon EKS)

  • Amazon’s managed Kubernetes (open source)

• AWS Fargate

  • Amazon’s own Serverless container platform
  • Works with ECS and with EKS

• Amazon ECR:

  • Store container images

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