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Docker ppt

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A quick introduction of docker containerization. This slide provides overview of other related things such as docker-compose, swarm mode and orchestration.

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Docker ppt

  1. 1. Docker Bhanuchander210 A Dev-Ops Tool Info Written in : Go Author : Solomon Hykes
  2. 2. Bhanuchander210 Virtualization Type 1 : ● One OS doesn’t affect other / Gyest OS ● Ex : Microsoft Hyper-V, VMware ESXi Server, Xen Server Type 2 : ● Host-Guest OS Methodology ● Ex : Microsoft Virtual PC, VMware Workstation, Oracle VBox
  3. 3. Bhanuchander210 Containerization OS level Virtualization ● ● Isolated virtual machine like user space running instances ● ● Ex : Zones, Virtual Kernels Virtual Machine ● Having Hypervisor. ● It consumes more. For example ~1.2Gb/instance ● So heavier ● Slower ● Needs bigger footprint (RAM and storage) Containers ● Replaces hypervisor. ● Consumes very less ~2.5Mb ● Lightweight ● Faster ● Smaller footprint (No RAM and individual storage)
  4. 4. Bhanuchander210 Docker Images Docker Image |---- CMD Layer |---- EXPOSE Layer |---- WORKDIR Layer |---- RUN Layer |---- Base Image Layer |---- bootfs Layers
  5. 5. Bhanuchander210 Docker Infra
  6. 6. Bhanuchander210 How To ? Build Run Quick Demo Video : Installation - Build - Run
  7. 7. Bhanuchander210 Docker Commands Basic ● docker inspect - Inspecting the information about the custom object. ● docker rm - Removing the object provided in arg. ● docker info - Printing the docker information. ● docker rename - All objects can be renamed. ● docker login - Registry Login ● docker logout - Registry Logout For containers, ● docker container ● docker ps - Process status for current running processes. ● docker start - Initiating the container. ● docker restart - Restarting the already started container. ● docker cp - Copy the files from the local directory to the container path. ● docker port - Port mapping on running container. ● docker pause ● docker unpause For Images, ● docker image ● docker search - Search images in customized docker registry. ● docker pull - Pulling images from registry. ● docker push - Pushing images to the customized registry. ● docker save - Save the image as compressed file. ● docker load - Load the compressed file as an image. ● docker rmi - Removing images. ● docker run - Create + Start the container in single command. Others ● docker volume - Mounting the local directory as a volume object to the container. ● docker network - Network configuration customizing for bridge, vlan and overlay networks. ● docker stats - Statistics on the container information on the machine environment. ● docker top - Normal Top command for quick view.
  8. 8. Bhanuchander210 Docker Compose Docker-compose.yaml version: '3.3' services: db: image: mysql:5.7 container_name: mysql_database volumes: - db_data:/var/lib/mysql restart: always environment: MYSQL_ROOT_PASSWORD: word@press MYSQL_DATABASE: wordpress MYSQL_USER: wordpress MYSQL_PASSWORD: abc@123 wordpress: depends_on: - db image: wordpress:latest container_name: wd_frontend volumes: - wordpress_files:/var/www/html ports: - "8000:80" restart: always environment: WORDPRESS_DB_HOST: db:3306 WORDPRESS_DB_USER: wordpress WORDPRESS_DB_PASSWORD: abc@123 volumes: wordpress_files: db_data: Run schema for Multiple Containers
  9. 9. Bhanuchander210 Docker Swarm Raft consensus in swarm mode http://thesecretlivesofdata.com/raft/ Can Tolerate upto (N-1)/2 Node failures
  10. 10. Bhanuchander210 Docker Swarm Master > docker swarm init > docker stack deploy -c stack.yml myname Worker > docker swarm join --token ***** ip:port In Master Node : > docker stack ps msql ID NAME IMAGE NODE CURRENT STATE r3qnn6q8v83m msql_db.1 mysql:latest bhanuchander.nmsworks.co.in Running 13 minutes ago bu06hxyucifm msql_adminer.1 adminer:latest bhanuchander.nmsworks.co.in Running 11 minutes ago Container Names will be skipped . . . !
  11. 11. Bhanuchander210 Overview Running Containers Single/Swarm Docker-Compose ? Our application Local Host Docker Image
  12. 12. Bhanuchander210 Others: ● Rancher ● Docker Machine ● Kubernetes vs Rancher vs Docker Machine Deployment: Objects ● POD ● Replica Set ● Deployment ● Service ● Namespace In my system around 53 types of kubernetes Controllers and objects are available.. Demands for Swarm Cluster Ex : Minikube, katakoda,.... Kubernetes

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