The document discusses containerization using Docker. It covers topics like containers vs virtual machines, Docker architecture and features, building Docker images, networking and linking containers, Docker Compose for multi-container apps, container security, and orchestration tools like Docker Swarm, Kubernetes, and Mesos/Marathon for running containers at scale. It provides examples of using Docker, Amazon ECS, Docker Swarm, and Mesos/Marathon.

1. Containerization using Docker
Vinod Doshi
-- Sr. Manager QA & DevOps, Synerzip Softech India Pvt Ltd.
-- Email : vinodkdoshi@gmail.com, vinod.doshi@synerzip.com
-- Twitter handle : https://twitter.com/vinodkdoshi
-- Linkedin profile : https://in.linkedin.com/in/vinoddoshi
Sumit Ramteke
-- Senior Full Stack Developer, Synerzip Softech India Pvt Ltd.
-- Email : sumitvramteke@gmail.com,sumit.ramteke@synerzip.com
-- Linkedin profile : https://www.linkedin.com/in/sumitramteke

2. Agenda
● VM’s , IAAS , PAAS and DevOps
● Containers vs Virtual Machines
● Container architecture and Micro Services
● Docker features and Docker ecosystem
● CI using Docker
● Docker security considerations
● Container Orchestration

3. Virtualization

4. IAAS and PAAS

5. CODE REVIEWS
APPLICATION SERVERS CODE COVERAGE
DEPLOYMENT
MONITORING BUILD TOOLS
CLOUD
SOURCE CODE
WEB SERVERS
CONTINUOUS
INTEGRATION
LOGGING
RDBMS
NOSQL
ARTIFACTORY
CONFIGURATION
MANAGEMENT
CACHING
VIRTUALIZATION
ISSUE MANAGEMENT
CONTAINERIZATION

6. Containers vs VM’s

7. Containers
● Run in user space
● Have an isolated user space
● OS architecture is shared
● Only parts created are bins/libs
● Lightweight compared to VM’s

8. Docker
● Open source project
● Linux namespaces & control groups
● Union File System
● Lightweight and fast
● Usability
● Easy to Modularize apps
● Easy to scale apps
● Dockerhub as central repository

9. Micro services

10. Why Micro Services
● Service oriented architecture
● Loosely coupled, Tightly aligned
● High Developer productivity
● Regressions easy to find, correct
● Releases have zero overhead
● Rapid iteration using real consumer metrics
● Very less overhead in doing a new release
● Continuous Delivery

11. Containerization Technologies
● CoreOS, Rocket
● Docker
● Redhat containers
● AWS PAAS
● GCE PAAS
● AWS Lambda

12. Docker setup
● Ubuntu
○ Installation using apt-get
○ 1.12 aws images on beta signup
● Windows
○ Docker Toolbox
○ Docker 1.12
● Mac
○ Docker Toolbox
○ Docker 1.12

13. Dockerhub
● Dockerhub
● Public repository
● Private repository
● Official images
● User submitted images
● Private docker infrastructure

14. Docker images
● What is a docker image
● Creating a container from an image
● Listing images
● Removing images
● Removing images
● Searching docker images

15. Docker containers
● Docker hello world
● Launching container as daemon
● Listing containers
● Logging into container
● Docker start, stop
● Docker pause, unpause
● Docker inspect
● Deleting container

16. Docker resource allocation
● -m, --memory=""
● --memory-swap=""
● --cpuset-cpus=""
● -c, --cpu-shares

17. Docker layers
● List of read-only layers
● Layers have file system differences
● New Container adds thin, writable layer

18. Building images
● Modifying containers
● Creating an image
● Registering an image

19. Docker file
● Structure of Docker file
● Example Docker file
● Building image using a Docker file
● Docker file instructions
○ From, Maintainer, Copy
○ Add, Env, User, Workdir
○ Volume, Expose, Run
○ Cmd, Entrypoint, Onbuild

20. Docker Networking
● Container ip address
● Port mapping
● Binding to specific ip address
● Auto-generating host port

21. Linking containers
● --link option
● Exporting variables
● Enabling networking

22. Sharing data
● Containers are temporal
● Data volumes
● Sharing host data
● Data only containers
● Data volumes from other containers

23. Docker compose
● Multi container application
● Installing Docker compose
● Structure of compose file
● Define logical application
● Docker-compose.yml file
● Docker-compose command
● Launching multi-container app

24. Debugging containerized applications
● exec
● ps
● top
● stats
● logs
● Inspect

25. CI and deployment using Jenkins
● Using Jenkins for CI
● Docker plugins
● ssh build and deployment

26. Securing Docker containers
● VM vs Docker containers
● Resource Isolation
● Cgroups
● Non root user
● A trusted repository of software
● Filesystems need to be read-only
● Copy on write
● Security-Enhanced Linux

27. Orchestration
● Running containers on a cluster
● High availability
● Load balancing and Auto scaling
● Mesos, Marathon (Apache project)
● Docker Swarm (native Docker v 1.12 )
● GCE Kubernetes PAAS (Google project)
● AWS ECS PAAS
● AWS containers on Beanstalk PAAS

28. Amazon EC2 Container Service (ECS)
Manage and Deploy Docker containers at Scale

29. ECS: Awesome Features
● Docker Compatibility
● Managed Clusters
● Task Definitions
● Programmatic Control
● Scheduling
● Container Deployments
● Local Development
● Monitoring
● Logging
● Repository Support

30. ECS: Example

31. Docker Swarm: A Native Cluster

32. App Architecture

33. Swarm Cluster Architecture

34. Final Result

35. Mesos, Marathon
● Apache project
● https://mesosphere.github.io/marathon/
● http://mesos.apache.org
● Container orchestration platform

36. Mesos Master, Mesos Slave, Zookeeper

37. Mesos, Marathon cluster Demo
● Setup on a VM
● Mesos Master dashboard
● Marathon dashboard
● Launching a hello world job
● HA, Auto scaling

38. Thank You
Vinod Doshi
● Email:vinodkdoshi@gmail.com
● Twitter:@vinodkdoshi
● Linkedin:https://in.linkedin.
com/in/vinoddoshi
Sumit Ramteke
● Email:sumitvramteke@gmail.com
● Linkedin:https://www.linkedin.
com/in/sumitramteke