Docker 101 describing basic docker usage
- 1. Docker 101 Mike Coleman – Technology Evangelist, Docker @mikegcoleman
- 2. 2 Who Am I? • Technology evangelist at Docker • 1st half of my career was in IT Networking admin • 2nd half of my career has been in product management marketing for Docker, Puppet Labs, VMware, and Microsoft. • Definitely more IT pro than developer • @mikegcoleman (but mostly I tweet about the Portland Timbers)
- 3. Agenda Containers are NOT VMs Working with Docker (Build, Ship, Run) But Why? Getting started Q & A
- 4. Containers are not VMs
- 5. 5 Docker containers are NOT VMs • Easy connection to make • Fundamentally different architectures • Fundamentally different benefits
- 6. 6 VMs
- 7. 7 Containers
- 8. Docker + Windows Server = Windows Containers Native Windows containers powered by Docker Engine Windows kernel engineered with new primitives to support containers Deep integration with 2+ years of engineering collaboration in Docker Engine and Windows Server Microsoft is top 5 Docker open source project contributor and a Docker maintainer Infrastructure Windows Server 2016 Bins/Libs App Docker Engine Bins/Libs App Bins/Libs App
- 9. 9 They’re different, not mutually exclusive
- 10. Variables to Consider • Performance • Security • Scalability • Existing Skillsets • Costs • Etc. http://people-equation.com/do-your-words-encourage-or-deflate/math-equation_chalkboard/
- 11. 11 Container Consolidation Testing • Testing done by HPE, Docker and Industry Consultant • Components: − Docker CS Engine 1.12.3 − VMware ESXi 6 − SysBench 1.0 (Nov 2016) − RHEL 7.2 − HPE ProLiant DL360 Gen 9 servers with HPE 3PAR StorServ 8200 SSD Storage How can containers help organizations optimize hardware utilization?
- 12. 12 Testing Scenarios Measure SysBench performance across 3 configurations Need to replace this graphic w/ the one w/ 8 boxes Scenario 1: 8 VMs Scenario 2: 1 VM w/ 8 Containers Scenario 3: 8 Containers on Bare Metal
- 13. 13 Results Moving from VMs to containers increases performance 27% to 46% Results are after VM and Container Tuning
- 14. 14 Additional Savings Docker allowed for savings in memory and disk as well
- 15. 15 Key Learnings Plan for Higher Density Bare Metal or Bigger VMs Tune To Optimize Docker containers increase performance and flexiblity 2 1 3
- 17. Build, Ship, and Run
- 18. 18 Put it all together: Build, Ship, Run Workflow Developers IT Operations BUILD Development Environments SHIP Create & Store Images RUN Deploy, Manage, Scale
- 19. Docker Engine Load Balancing Certificate Authority Networking Service Discovery TLS Swarm Mode Manager Swarm Mode Worker Orchestration Components Volumes Plugins Distributed store Container Runtime The building block: Docker Engine 1.12 • Powerful yet simple, built in orchestration • Declarative app services • Built in container centric networking • Built in default security • Extensible with plugins, drivers and open APIs Built in orchestration with scheduling, networking and scheduling
- 20. Docker Universal Control Plane Integrated Security Docker Engine Container runtime, orchestration, networking, volumes, plugins Docker Trusted Registry Operating Systems Config Mgt Monitoring Logging CI/CD ..more.. Images Networking Volumes Virtualization Public Cloud Physical Docker Datacenter platform Docker Datacenter
- 21. Docker Datacenter Architecture UCP Manager UCP Manager UCP Manager Internal distributed store Raft consensus group BYO TCP Load Balancer
- 22. Docker Datacenter Architecture UCP Worker UCP Worker UCP Worker UCP Worker Admin / User Deploy / manage UCP Manager UCP Manager UCP Manager Internal distributed store Raft consensus group BYO TCP Load Balancer
- 23. Docker Datacenter Architecture UCP Worker UCP Worker UCP Worker UCP Worker Admin / User Deploy / manage UCP Manager UCP Manager UCP Manager Internal distributed store Raft consensus group BYO TCP Load Balancer DTR Replica Worker Image Registry BYO TCP Load Balancer DTR Replica Worker DTR Replica Worker push / pull LDAP/AD Monitoring Logging External CA Image Storage
- 24. 24 Some Docker vocabulary Docker Image The basis of a Docker container. Represents a full application Docker Container The standard unit in which the application service resides and executes Docker Engine Creates, ships and runs Docker containers deployable on a physical or virtual, host locally, in a datacenter or cloud service provider Registry Service (Docker Hub or Docker Trusted Registry) Cloud or server based storage and distribution service for your images
- 25. Basic Docker Commands $ docker pull mikegcoleman/catweb:1.0 $ docker images $ docker run –d –p 5000:5000 –-name catweb mikegcoleman/catweb:latest $ docker ps $ docker stop catweb (or <container id>) $ docker rm catweb (or <container id>) $ docker rmi mikegcoleman/catweb:latest (or <image id>) $ docker build –t mikegcoleman/catweb:2.0 . $ docker push mikegcoleman/catweb:2.0
- 26. 26 Dockerfile – Linux Example • Instructions on how to build a Docker image • Looks very similar to “native” commands • Important to optimize your Dockerfile
- 27. Dockerfile – Windows Example
- 28. Demo Build, Ship, and Run
- 29. But Why?
- 30. Enterprises are looking to Docker for critical transformations 80% Docker is central to cloud strategy Docker Survey: State of App development : Q1 - 2016 3 out 4 Top initiatives revolve around applications 44% Looking to adopt DevOps App Modernization DevOps Cloud State of App development Survey: Q1 2016
- 31. 37 Docker delivers speed, flexibility and savings + + Agility Portability Control State of App development Survey: Q1 2016, Cornell University case study 13X More software releases 62% Report reduction in MTTR 10X Cost reduction in maintaining existing applications Eliminate “works on my machine” issues 41% Move workloads across private/public clouds 65% Reduction in developer onboarding time
- 32. One platform delivers one journey for all applications 1 Containerize Legacy Applications Lift and shift for portability and efficiency 2 3 Transform Legacy to Microservices Look for shared services to transform Accelerate New Applications Greenfield innovation
- 33. Docker Universal Control Plane Integrated Security Docker Engine Docker Trusted Registry Config Mgt Monitoring Logging CI/CD ..more.. Images Networking Volumes Virtual Public Cloud Containers in production with Docker Datacenter • Enterprise container orchestration, management and security for dev and ops • Available today for Linux environments • Q4 2016 beta for Windows environments Physical
- 34. Getting Started
- 35. 41 Docker on Linux • Create a Linux VM (or use physical), and install Docker −Requires kernel 3.10 • Stable builds −curl –sSL https://get.docker.com/ | sh • Test and experimental builds −curl –sSL https://test.docker.com/ | sh −curl –sSL https://experimental.docker.com/ | sh • Can also manually install (see docs)
- 36. Docker for Windows / Mac • Currently in public beta • Easy to install: Get up and running on Docker in minutes • Leverages Hyper-V (Windows) or xhyv (Mac) − Docker for Windows requires Windows Pro 10, Enterprise, or Education • Full API / CLI compatibility • OS integration for increased stability and speed
- 37. Docker for Azure / AWS • Currently in public beta − https://beta.docker.com/ • Easily deploy Docker 1.12 Swarm clusters (Linux) • Scale up and down easily • Integrate with underlying platform (i.e. load balancers)
- 38. Walk, Jog, Run Walk: • Setup your preferred Docker environment • Fire up some prebuilt images (nginx, hello-world, mikegcoleman/catweb) Jog: • Pick a well documented solution (Wordpress, Jenkins, etc) • Build it for yourself (blogs are your friend) Run: • Extend one your Walk solution or Dockerize an existing project • Build your own Dockerfiles • Experiment with Docker Compose and Swarm Mode