Considerations for operating docker at scale
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"Scale" happens along 3 different aspects: (1) applications and their services scale up and down leading to (2) the infrastructure scaling up to meet the needs of the applications, and finally (3) sites scale across multiple locations, including movement to public cloud. In this session, we will talk about how Docker EE scales along all three of these dimensions to give you a consistent platform for running your applications: 1. At the application level: how do you manage application state & health along with resource and security constraints to scale containers up and down up in a controlled fashion? 2. The infrastructure level: as your application estate grows on the Docker EE platform you will need to scale across more nodes. How do automate the provisioning of these new nodes and how do you integrate the Docker EE platform layer with your existing infrastructure systems and tools. 3. Finally, we'll talk about distributed scale: how do you take what works for applications in one data center and spread it across multiple sites, in an integrated fashion so you can operate seamlessly?
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Considerations for operating docker at scale
- 1. v Considerations for Operating Docker at Scale
- 2. Solution Architect, Docker Andrew Hromis Sr. DevOps Engineer, Jabil @sujaypillai Sujay Pillai
- 3. • Architecture • Node sizing • Orchestration • Applications Scaling Docker EE
- 4. • Design for failure • Leverage Docker Certified Infrastructure • Prioritize centralized logging and metric collection Architectural Considerations
- 5. Single Logically Separated Cluster Node Worker Node Worker Node Worker Node Worker swarm mode cluster Node Worker Node Worker .NET Dev Team Using Swarm Java Dev Team using K8s Java Dev Team Using Swarm Ops Team DOCKER ENTERPRISE EDITION
- 6. Production Environments Docker Trusted Registry Docker UCP Production Environments Version Control Docker UCP Non-Production EnvironmentsDeveloper Machine Development CI/CD Operations Datacenter 1 Datacenter 2 Docker Trusted Registry Docker for Clusters by Lifecycle
- 7. Multi-region DR West East CI Agent $ eval $(<env.sh) … east $ docker run $ docker service $ docker-compose up m yapp v1.0
- 8. Multi-region DR West East CI Agent $ eval $(<env.sh) … west $ docker run $ docker service $ docker-compose up myapp v1.0
- 9. Blue/Green foo.example.com (1.0) foo.green.example.com (1.1) Run your tests! PRODUCTION NEW RELEASE
- 10. Ship it! foo.example.com (1.0) foo.example.com (1.1) Increase traffic to the new release PRODUCTION 90% Traffic PRODUCTION 10% Traffic
- 11. All good? foo.example.com (1.0) foo.example.com (1.1) Measure the new release PRODUCTION 90% Traffic PRODUCTION 10% Traffic
- 12. Cluster Upgrade foo.example.com (1.0) foo.example.com (1.1) Maintenance can be performed on blue, or rollback PRODUCTION 0% Traffic PRODUCTION 100% Traffic
- 13. Scaling w/ Docker Certified Infra
- 14. Node Sizing Manager Nodes Worker Nodes • CPU: 4 vCPU • Memory: 16GB • Disk: SSD for /var/lib/docker • Support 100s of worker nodes • 3 or 5 managers is preferred • Depends on application workloads • If migrating there will be less overhead from OS • Leave headroom for rescheduling events • Run under load and test
- 15. • Don’t schedule workloads on manager nodes • Deploy to nodes that fit app profiles • Constrain resources • Use Kubernetes namespaces in environments with multiple users and teams Orchestration
- 16. • Stateless applications scale the best • Scale applications with any orchestrator • Adjust replica count in Kubernetes and Swarm • Understand the metrics by which to scale Scaling Applications
- 17. Manufacturing at the Speed of Digital © JABIL, INC. | PUBLIC
- 18. Built on a solid foundation 1966 Founded in Michigan World’s most technologically advanced manufacturing solutions provider 37 Million square feet of Manufacturing space 100+ Sites in 29+ Countries Tenured Management Team 180K Dedicated Employees
- 19. Over 100 sites in 29 countries Our Markets Automation FluidicsAcoustics Dynamic Tuning Emerging Markets Human Machine Interface Adhesives IoT IT Cyber Security Additive Manufacturing Advanced Assembly Intelligent Digital Supply Chain Experience Design Mechanical Engineering Human Factors Research & Strategy Materials Technology Miniaturization Optical Communications & Networking Smart Clothing Optics Power Engineering Precision Injection Mold Tooling Precision Mechanics Printed Electronics Sensors Test Engineering Value Engineering Wireless Connectivity Industrial Design UI/UX Electrical Engineering / Firmware Software Development Innovation Fuel: Engineering Excellence
- 21. Our journey from Docker CE to EE • CE 1.13 and upgraded to 17.06.0-ce • 9 node cluster [ 5 manager + 4 worker nodes] • DFP – HAProxy + custom logic provides on-demand reconfiguration • GlusterFS for storage [ 3 clustered servers ] • Standalone registry server & Portus as web frontend • Portainer – Management solution for Docker • Prometheus – Monitoring Getting Started First Project Scale Innovate
- 22. Docker EE Architecture Docker EE Cluster DOCKER ENTERPRISE EDITION Node Worker Node Manager Management Plane Node Worker Node Worker Node Worker Node Worker Node Worker Node Worker Node Manager Node Manager
- 23. Docker EE Architecture Docker EE Cluster DOCKER ENTERPRISE EDITION Node Worker Node Manager Management Plane Node Worker Node Worker Node Worker Node Worker Node Worker Node Worker Node Manager Node Manager Availability Set docker.corp.jabil.org push / pull
- 24. Docker EE Architecture Docker EE Cluster DOCKER ENTERPRISE EDITION Node Worker Node Manager Node Worker Node Worker Node Worker Node Worker Node Worker Node Worker Node Manager Node Manager Availability Set deploy / manage Management Plane AvailabilitySet ucp.docker.corp.jabil.org
- 25. Docker EE Architecture Docker EE Cluster DOCKER ENTERPRISE EDITION Node Worker Node Manager Node Worker Node Worker Node Worker Node Worker Node Worker Node Worker Node Manager Node Manager Availability Set Management Plane AvailabilitySet *.docker.corp.jabil.org Availability Set Availability Set
- 26. Dockerized Apps
- 27. v Shop Floor Solutions – Malaysia, Vietnam, Singapore, China, India, Italy Docker – Shop Floor Solutions Web Kiosk, E-TV RDP – Remote Desktop Protocol $450 savings per station in hardware costs ($500 vs $50) $200 savings per station in hardware costs ($250 vs $50) Lower energy usage per device (51.84 kwh v/s 4.32kwh per month) Lobby, Cafeteria, PCC Stations, PLSD (~1000) Lower energy usage per device (11.51 kwh v/s 4.32kwh per month) Replaces Thin Clients (~20,000) Highly scalable + Automated Pi update system that is productionized Alternate technologies lowering costs and easier to deploy “Pi wouldn’t have happened without Docker” … Eric Kerin 194 Pi’s & growing
- 28. Azure Scale/Availability Set FD 0 FD 1 DTR01 UD0 DTR02 UD1 DTR03 UD2 availabilityset-dtr DTR04 UD3 DTR05 UD4 Scale Set Availability Set Identical VM’s Not necessary to be identical VM’s Unpredictable workload Predictable workload
- 31. DTR Garbage Collection • Until done • For x minutes • Never
- 32. Monitoring
- 33. Monitoring
- 34. Scheduler
- 35. Monitoring docker service create --name devservices-omsagent --mode global --mount type=bind,source=/var/run/docker.sock,destination=/var/run/docker.sock --secret source=devservices_oms_wsid,target=WSID --secret source=devservices_oms_wskey,target=KEY -p 25225:25225 -p 25224:25224/udp --restart-condition=on-failure microsoft/oms
- 36. Additional information: • Docker Certified Infrastructure: https://success.docker.com/architectures • DTR Image Caching: https://docs.docker.com/ee/dtr/admin/configure/deploy-caches/ • Running Docker EE at scale: https://success.docker.com/article/running-docker-ee-at-scale Thank you!