Kubernetes For Developers - Sydney Alt.Net

Transcript

1. Kubernetes for Developers Hossam Barakat Senior Consultant at Readify @hossambarakat_ | www.hossambarakat.net
2. @hossambarakat_ • What is Kubernetes? • Why Kubernetes? • Kubernetes Architecture • Kubernetes Building Blocks • Kubernetes in the cloud Agenda
3. @hossambarakat_ Hardware Host Operating System Application Application Application Container Dependencies Application Host Operating System Hardware Container Engine Container Container Container Container Hardware Host Operating System Virtual Machine Guest OS Application Virtual Machine Guest OS Application Hypervisor
4. @hossambarakat_ What is Docker?
5. @hossambarakat_ The application is deployed to production
6. @hossambarakat_ Then the application went viral
7. @hossambarakat_ Containers bring scalability challenges!
8. @hossambarakat_ Container orchestration platforms to rescue
9. @hossambarakat_ • Service discovery • Scaling • Health monitoring • Failover • Networking • Scheduling • Coordinated app upgrades Container Orchestration
10. @hossambarakat_ Kubernetes
11. @hossambarakat_ • Self-healing • Horizontal scaling • Service discovery and load balancing • Automated rollouts and rollbacks • Secret and configuration management • Storage orchestration • Automatic binpacking • Batch execution Why Kubernetes?
12. @hossambarakat_ Why do we use K8s instead of Kubernetes? Kubernetes 8 K8s
13. @hossambarakat_ Kubernetes Architecture Master Worker Worker Client Worker Cluster
14. @hossambarakat_ Kubernetes Architecture Master API Server Controller Manager Scheduler Worker Kubelet Container Runtime UI (Dashboard) CLI (Kubectl) Other Client(s) Container Container Cluster
15. @hossambarakat_ • Localhost installation (Minikube, Docker For Desktop) • On-Premise Installation (VMs, Bare Metal) • Cloud (Google, Azure, AWS,…) Installing Kubernetes
16. @hossambarakat_ ASP.NET App On Kubernetes ASP.NET Application
17. @hossambarakat_ ASP.NET App On Kubernetes ASP.NET Application ASP.NET Application ASP.NET Application
18. @hossambarakat_ Pods
19. @hossambarakat_ Pods Pod
20. @hossambarakat_ Pods Scaling Pod Pod
21. @hossambarakat_
22. @hossambarakat_ But wait… what happens if the pod dies?
23. @hossambarakat_ ReplicaSets Pod ReplicaSet Pod
24. @hossambarakat_ ReplicaSets Master Worker 1 Worker 2 Pod 1 Pod 2 Worker 3 Pod 2
25. @hossambarakat_ Labels Pod
26. @hossambarakat_
27. @hossambarakat_ Deployment ReplicaSet Deployment Pod Pod
28. @hossambarakat_ Deployment Rollout Deployment ReplicaSet V2 Pod Pod ReplicaSet V1 Pod Pod
29. @hossambarakat_
30. @hossambarakat_ Connecting to Pods 10.0.0.1 DB Pod A 10.0.0.2 DB Pod B ASP.NET Pod
31. @hossambarakat_ Service 10.0.0.2 Pod B 10.0.0.3 Pod C IP: 10.0.0.30 DNS: myservice Service 10.0.0.1 Pod A
32. @hossambarakat_ Service 10.0.0.1 DB Pod A ASP.NET Pod IP: 10.0.0.30 DNS: myservice Service
33. @hossambarakat_ Service IP: 10.0.0.30 DNS: tasks-app-svc Service IP: 10.0.0.90 DNS: mssql-service Service 10.0.0.1 Pod 10.0.0.1 Pod 10.0.0.1 Pod
34. @hossambarakat_
35. @hossambarakat_ Persistent Volume
36. @hossambarakat_ Persistent Volume
37. @hossambarakat_ Persistent Volume
38. @hossambarakat_
39. @hossambarakat_ Kubernetes in the cloud
40. Azure AKS $ az aks create -g myResourceGroup -n myCluster --generate-ssh-keys $ az aks get-credentials -g myResourceGroup -n myCluster $ kubectl get nodes $ az aks scale -g myResourceGroup -n myCluster --node-count 6
41. @hossambarakat_ • Kubernetes Architecture • Deploy application using different workloads • Kubernetes in the cloud Summary
42. @hossambarakat_ • https://github.com/hossambarakat/TaskList • Introduction to Kubernetes (edX) • Learn Kubernetes using Interactive Hands-on Scenarios (Katacoda) • https://kubernetes.io/docs/ Resources
43. @hossambarakat_ Questions?
44. Thanks Hossam Barakat @hossambarakat_ www.hossambarakat.net