So Many Docker Platforms...so little time
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This document discusses various Docker orchestration platforms and their key features. It begins with questions about when an orchestration platform is needed and how to choose one. It then covers considerations like deployment scenarios, features for scheduling, networking, service discovery, recovery, and auto-scaling. The rest of the document demonstrates Docker Swarm, Docker EE, Mesosphere DC/OS, AWS ECS, and Kubernetes/GCP and how they handle scheduling, load balancing, self-healing, auto-scaling and more.
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So Many Docker Platforms...so little time
- 1. So many Docker platforms, so little time… OOP Conference, Munich February 2018 Michele Leroux Bustamante Solliance CIO, co-founder michelebusta@solliance.net @michelebusta
- 3. #1 How do I know if I need an orchestration platform?
- 4. #2 How do I CHOOSE the right approach or platform?
- 5. Considerations • Deployment scenarios • Single container / instance • Classic load balancing • Orchestration platforms at scale • Features • Scheduling and resource constraints • Load balancing and networking • Service discovery • Recovery and self-healing • Auto-scale • Overall manageability
- 6. Full stack inside Ubuntu Base Ubuntu Update Kestrel .NET Core ASP.NET Core Application Files CoreOS Base CoreOS Update Java SDK Apache Tomcat Application Files Windows Server Core Base Windows Updates .NET IIS Application Files
- 8. Web App API App Local Machine Image Web App Dockerfile Image API App Dockerfile Web App API App Docker Build Docker Run PORT 5000 PORT 5001
- 9. Docker Compose • Run multi-container applications • Create a service definition file • YML (YAML) file “docker-compose.yml” • Defines: • Container image • Ports • Networks • Volumes • Environment variables • Configuration
- 10. Web App API App Local Machine Image Web App Dockerfile Image API App Dockerfile Web App API App Docker Build PORT 5000 PORT 5001 Network Docker-Compose Up YML file
- 12. Image Registry Local Machine Container Registry Push Images Image Repo Latest Version Info Repository tags Promotion tags Images Build Images Code Dockerfile
- 13. Automated Image Builds / Tagging GitHub / TFS CI Tool Container Registry Build Images Pull Latest Push Images Service Image Repo Latest Version Info Repository tags Promotion tags Dockerfile Commit work Automate or manually execute build Service Repo
- 14. Automated Image Builds / Tagging GitHub / TFS CI Tool Container Registry Build Images Pull Latest Push Images Service Image Repo Latest Version Info Repository tags Promotion tags Dockerfile Commit work Automate or manually execute build Service Repo Dev Uat Prod Latest Version x Version x Prod
- 15. DEMO Docker, Docker Compose, CI, CD
- 16. What does deployment topology look like?
- 17. Containers and VMs • Azure, AWS, Google all support this with IaaS • Docker-enabled VMs • Load balanced • PaaS options • Azure App Service with Linux container support • Serverless • Azure Container Instance • AWS Fargate
- 18. Single VM 80
- 19. We’ll be ok with a single instance. Containers start fast. NO!
- 20. Load Balanced VMs 80 80
- 21. Multiple Container Per VM 8081 82
- 22. Multiple Container Routing 80 81 83 Router 82
- 23. App Services 80 A C Router B 80 A C Router B
- 27. Now the fun begins…
- 28. Platform Master and Agent clusters LEADER Master Nodes / Cluster Agent Nodes
- 29. Container Platforms / Considerations Platforms • Kubernetes • Mesosphere DC/OS • Kubernetes • Docker CE / EE • Swarm • Kubernetes Infrastructure • Management cluster • Agent node cluster • Networking / Routing / DNS • Docker registry Core Features • Service registration and discovery • Load balancing • Routing • Auto-scaling • Self-healing • Upgrade, rollback, recovery • Secret management Host • Amazon • ECS • EKS • Fargate • Azure • ACS • AKS • ACI • Google • Kubernetes Engine • On premise / hybrid
- 31. Docker Swarm Management Nodes Agent Nodes
- 32. Scheduling LEADER Master Nodes / Cluster Agent Nodes Schedule services Pull image Run container Service Description
- 33. DEMO Docker Swarm / scheduling and resource constraints
- 37. Resource Constraints • Implicit constraints • Physical hardware • Technical limitation (port reuse) • Explicit constraints • CPU, memory, IO • Determines node distribution • Enables containment of resource usage • Multi-tenancy • Avoiding noisy neighbor
- 38. Orchestration / Management UI Docker Enterprise Edition
- 39. DEMO Docker EE
- 40. Load balancing, discovery Mesosphere DC/OS / Azure Container Service
- 41. Mesos / Marathon Management Nodes Agent Nodes
- 42. IdentityServer Web User Management Web Config Web User Self-Service Web Config Runtime API Config Management API User Runtime API User Management API User Self-Service API Config DBConfig DB Config Runtime DB User Runtime DB Users DB User Self- Service DB Postgre SQL PGAdmin
- 43. Services and projectors User Runtime API User Management API User Self-Service API Topics Projector Projector Projector Projector Projector Config DB Security Audit DB User History DB User Runtime DB Users DB User Self- Service DB
- 44. DEMO DC/OS and Azure Container Service Scheduling, load balancing / discovery / scale / health /
- 45. Recovery, self-healing, auto-scale Amazon ECS Kubernetes / Google Container Engine
- 47. Public ALB Route 53 DNS Availability Zone A Availability Zone B Availability Zone C Public Subnet Private Subnet Private Subnet ECS Nodes ECS Nodes Private Subnet ECS NodesEC2 Nodes Public Subnet EC2 Nodes Public Subnet EC2 Nodes Private ALB
- 48. Server Density
- 49. Server Density
- 50. Room for Upgrades, Restarts What about me???
- 51. Adding Nodes What about me???
- 52. Redistribution of Instances What about me???
- 53. Room for New Instances What about me???
- 54. AWS EC2 Container Services (ECS) Self healing, auto scale, health checks DEMO
- 58. DEMO Kubernetes / Google Container Engine Job execution
- 59. Review • Docker without an orchestration platform • Features of orchestration platforms we care about • Load balancing, networking • Scheduling, discovery • Recovery, self healing • Auto scale • A look at • Docker Swarm / Docker EE • Mesosphere DC/OS / Azure Container Service • AWS • Kubernetes / Google Container Engine
Editor's Notes
- But, most importantly
- Docker image has what you need to run anywhere Env overrides heart of promotion, plus secrets Compose up local, task def for swarm / docker ee; others have similar
- Add registry Show container moving to node Show instance of containers on nodes Leader knows where container A instances are across cluster