Containerizing the Cloud with Kubernetes and Docker
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The document discusses the significance of containerization in cloud computing, highlighting Kubernetes and Docker as essential tools for creating lightweight, portable, and efficient applications. It emphasizes the management of containers on Google Cloud, including features like resource isolation, active monitoring, and community collaboration for enterprise-grade frameworks. The document also outlines Kubernetes' role in orchestrating containers, making cluster management straightforward and scalable.
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Containerizing the Cloud with Kubernetes and Docker
- 1. Containerizing the Cloud with Kubernetes and Docker James Chittenden Cloud Platform Solutions Engineer [email protected]
- 2. What is a container? • Lightweight Linux environment • Hermetically sealed, deployable application • Introspectable, runnable artifact • Recently popularized by Docker
- 3. Static application environment = reliable deployments No stress deployment and update Why do developers care? Repeatable, runnable artifact = portability Develop here, run there Pick your cloud solely on its merits Loosely coupled = easier to build and manage Compose applications from micro- services Mix in and extend third party services
- 4. Everything at Google runs in a container. • Resource isolation • Predictability • Quality of service • Efficient overcommit • Resource accounting Images by Connie Zhou
- 5. We start over 2 billion containers per week.
- 6. Why do developers care? • Efficiency: optimized packing, better scaling • Performance: active environment tuning • Continuous integration: easy and reliable • Robustness: active monitoring, self healing Highly automatable = path to active management
- 7. Managed Base OS Node Container Manager Scheduled Containers Cluster Scheduler Google cluster management stack
- 8. Managed Base OS Node Container Manager Scheduled Containers Cluster Scheduler Node container management on the Google Cloud Container Optimized VM Image Standardized Declarative Container Manifest Container health monitoring and restart
- 9. version: v1beta1 containers: - name: www image: nginx ports: - name: http hostPort: 8080 containerPort: 80 Example with nginx $ gcloud compute instances create my-nginx-container --metadata-from-file google-container-manifest=containers.yaml --zone us-central1-a --machine-type f1-micro --image projects/google-containers/global/images/container-vm-v20140522 command line containers.yaml www
- 10. version: v1beta1 containers: - name: www image: nginx ports: - name: http hostPort: 8080 containerPort: 80 - name: https hostPort: 443 containerPort: 443 Example with nginx containers.yaml www 8080 443 80 443
- 11. version: v1beta1 containers: - name: www … volumeMounts: - name: dataShard path: /mnt/shard readOnly: true - name: dataLoader … volumeMounts: - name: dataShard path: /mnt/output volumes: - name: dataShard Example with data sharding containers.yaml www dataLoader dataShard
- 12. User Experience Container Env. User App Host GCE VM Google Provided OS monitoring agent logging agent init / systemd sshd docker
- 13. Managed Base OS Node Container Manager Scheduled Containers Cluster Scheduler Cluster container scheduling on the Google Cloud Schedule containers across machines Replication and resizing Service naming and discovery
- 14. But it takes a community... Containers are portable. The active management framework must be portable too: • Run on your development machine. • Run on your cloud. • Run on Google Cloud Platform. • Run a different provider or your own hardware. And it must be enterprise grade. The community is working to create a framework that runs well everywhere: Kubernetes Microsoft, IBM, Red Hat, Docker, Mesosphere, SaltStack, and CoreOS, have joined the family.
- 15. Kubernetes κυβερνήτης: Greek for “pilot” or “helmsman of a ship” the open source cluster manager from Google
- 18. FE FE FE FE FE FE BE BE BE BEBE BE BE BE BE Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Kubernetes - Master/Scheduler Too Many Pods
- 20. labels: role: frontend stage: production Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Kubernetes - Master/Scheduler FE FE FE FE FE FE BE BE BE BEBE BE BE BE BE Labels
- 21. FE FE FE FE replicas: 4 template: ... labels: role: frontend stage: production Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Kubernetes - Master/Scheduler Replica Controller
- 22. FE replicas: 1 template: ... labels: role: frontend stage: production Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Kubernetes - Master/Scheduler Replica Controller
- 23. FE FE FE replicas: 3 template: ... labels: role: frontend stage: production Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Kubernetes - Master/Scheduler Replica Controller
- 24. id: backend-service port: 9000 labels: role: backend stage: production Backend Service BE BE BE BE Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Machine Host Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Container Agent Kubernetes - Master/Scheduler Service
- 26. We’re just getting started ● Clone Kubernetes at: https://github.com/GoogleCloudPlatform/kubernetes ● Check out container VMs at: https://developers.google.com/compute/docs/containers ● Join the discussion on freenode: http://webchat.freenode.net/?channels=google-containers
- 27. We’re taking lessons we’ve learned and open sourcing them Kubernetes is our evolving effort to make cluster management easy We’re eager to hear from you! 1 2 3 Summary
- 28. End