Docker team training

Docker team training

• 1.
  Docker WHAT IS INIT FOR MY TEAM
• 2.
  Why do weneed Docker? Developer/Test Concerns:  Imagine time taken to request for new Desktop or OS upgrade  Imagine setting up different OS environments for testing  Imagine setting up variations of services, databases on these environments Business concerns:  Power, Storage and equipment costs for the above  % of utilization of the equipment setup  % of time taken on Infra request, setup and configuration Docker Advantage:  Agility: simplifies infra setup – lot of kits available  Portability: Works here, definitely works there  Security: Isolates from attacks/vulnerabilities  Cost saving: Shared resources reduces investment and faster deployments reduces time/effort
• 3.
  What is Docker Docker – Build, Ship, and Run any App, Anywhere  Old way – Development cycle 1. Develop applications in Dev environment (Identify OS/Networking requirements, configure dev environment) 2. Deploy in production environment 3. Refine the dev environment to match production environment Ex: install zlib 4. Re-deploy fixes, patches and releases 5. Repeat step 1 to 4 for each upgrade/migration/feature enhancement  Docker way – Development cycle A. Build infrastructure and the app (Download docker container with dependencies) B. Validate with development configurations C. Deploy with production configurations Minimal tuning of Step A & B – post deployment
• 4.
  What are fundamentalsof Docker  Virtualization:  Creation of multiple guest context on the physical computer  Sharing of resources – Network, storage and compute  Containerization  Package software into std units for dev, shipment and deployment  Micro Services  Architectural pattern to maintain app(s) through multiple services instead of a single monolithic application
• 5.
  Where is Dockerused?  Docker is widely used  within enterprises like Cisco, Technicolor  For services such as Expedia, Paypal etc.  For cloud dev on Amazon, Azure  Two license types available  Opensource: Docker Community Edition Suggested to use this for 9 out of 10 times  Subscription: Docker Enterprise Edition  Available on all platforms – Windows, Linux, Mac  Available in different forms  Docker service  Docker toolbox (Legacy)
• 6.
  What are componentsof Docker?
• 7.
  How does Dockerwork?  Docker  Docker Engine – the container manager  Docker CLI – client which interacts through REST APIs with the Docker engine  Example commands: docker images docker ps  docker-machine  Tool to provision multiple Docker engines
• 8.
  How can onestart using Docker  Install Docker on your Ubuntu desktop (other OS also supported refer Get Docker section)  Follow pre-requisites/commands in https://docs.docker.com/install/linux/docker-ce/ubuntu/#install-docker-ce  sudo apt-get install docker-ce  Test your docker setup  sudo docker run hello-world Need internet connection  Sudo docker run –e “http_proxy=<http url:port>” hello-world  Explore Dockerfile to build Docker images  For example: Dockerfile to fetch centos and to copy scripts from local directory FROM centos RUN mkdir -p /bin/scripts COPY scripts /bin/scripts  Execute: docker build .  Explore docker-compose.yml to compose multiple images. Example of docker-compose.yml version: '3‘ services: app: build: ./ image: app:v4 couchdb_service: build: ./couchdb image: couchdb:v1.7  Execute docker-compose build or docker-compose build app
• 9.
  “ ” This reduces therisk of "worked in dev, now an ops problem. JAMES TURNBULL, THE DOCKER BOOK: CONTAINERIZATION IS THE NEW VIRTUALIZATION Thank You