Kubernetes in Azure at Azure Meetup Frankfurt

Slides for my talk about Azure ACS / AKS at Azure Meetup Frankfurt on March 22 2018

Transcript

1. Azure ACS and Kubernetes Alexander Zeitler Azure Meetup Frankfurt 2018, 22.03.2018 1
2. Alexander Zeitler CEO / Cloud Solution Architect at PDMLab • Microsoft MVP / ASP.NET since 2004 • ASP.NET Web API Advisor since 2011 • Microsoft Azure Advisor since 2014 • Organizer of Azure Meetup Karlsruhe • Using Docker since 2013 https://pdmlab.com alexander.zeitler@pdmlab.com @alexzeitler_ Azure ACS and Kubernetes 2
3. Agenda • Deployments/Containers • Containers in Azure • Azure ACS / Kubernetes • Azure AKS Azure ACS and Kubernetes 3
4. Challenge: Deployment Azure ACS and Kubernetes 4
5. • Fast • Reliable • Repeatable Azure ACS and Kubernetes Deployment 5
6. Azure ACS and Kubernetes The perfect deployment? 6
7. Azure ACS and Kubernetes Build, ship and run any application anywhere 7
8. Azure ACS and Kubernetes Docker ecosystem Engine Compose Hub Registry Machine Swarm Cloud 8
9. Containers in Azure Azure ACS and Kubernetes 9
10. Azure ACS and Kubernetes Azure Container Service (ACS) 10
11. Azure ACS and Kubernetes ACS Orchestrators Docker Swarm Mesos / DC/OS Kubernetes 11
12. Kubernetes Azure ACS and Kubernetes Greek for "Helmsman" The person who steers a ship 12
13. Azure ACS and Kubernetes Kubernetes Borg Omega 13
14. Azure ACS and Kubernetes Kubernetes == k8s 14
15. Azure ACS and Kubernetes k8s Architecture HTTPS Db Messaging Log Auth KV LB Orders 15
16. Azure ACS and Kubernetes k8s Architecture HTTPS Db Messaging Log Auth KV LB Orders 16
17. Azure ACS and Kubernetes k8s Architecture HTTPS Db Messaging Log Auth KV LB Orders Node 3 Node 2 17 Node 1
18. Azure ACS and Kubernetes k8s Architecture { /* App */ } Master Node Node Node Node Node Pods Pods Pods 18
19. Azure ACS and Kubernetes k8s Architecture Master Node Node Node Linux Linux/Win Linux/Win Linux/Win ENV ENV ENV ENV 19
20. k8s Masters Azure ACS and Kubernetes 20
21. Azure ACS and Kubernetes k8s Masters Master Linux ENV apiserver CM KV kube-apiserver Front end to control plane REST-API JSON (manifest files) KV-Store persistent state config of the cluster Uses etcd Controller Manager Node Controller Endpoints Controller Namespace Controller kube-scheduler watches apiserver Assigns work to nodes 21
22. Azure ACS and Kubernetes k8s Masters Master apiserver KV Node Node Node kubectl Commands (JSON) CM 22
23. k8s Nodes Azure ACS and Kubernetes 23
24. Azure ACS and Kubernetes k8s Nodes Node Linux/Windows ENV K Kubelet kubernetes agent registers node with cluster watches apiserver instantiates pods reports to master endpoint at port :10225 /spec /healthz /pods CR P Container Runtime pull images start / stop containers Docker or rkt kube-proxy Networking Assign IP to Pod All containers in a Pod share IP LB across Pods in services 24
25. k8s Desired State Azure ACS and Kubernetes 25
26. Azure ACS and Kubernetes Desired State Master apiserver KV Node kubectl Manifest file (JSON/YAML) CM 3 x nginx Pod nginx Node Pod nginx Node Pod nginx Desired State: OK 26
27. Azure ACS and Kubernetes Desired State Master apiserver KV Node kubectl Manifest file (JSON/YAML) CM 3 x nginx Pod nginx Node Pod nginx Node Pod nginx Desired State: FAILED 27
28. Azure ACS and Kubernetes Desired State Master apiserver KV Node kubectl Manifest file (JSON/YAML) CM 3 x nginx Pod nginx Node Pod nginx Desired State: OK Pod nginx 28
29. k8s Pods Azure ACS and Kubernetes 29
30. Azure ACS and Kubernetes Unit of scale Swarm Pod 30
31. Azure ACS and Kubernetes k8s Pods Pod Environment Namespaces Network stack ... n Containers trnsprt link net IPC mount 31
32. Azure ACS and Kubernetes k8s Pod Coupling Node Pod AI-Log App 32
33. Azure ACS and Kubernetes k8s Scaling Pods Node Pod Node Pod Node Pod Node Pod Pod Pod Do Don’t 33
34. Azure ACS and Kubernetes Pods are atomic containers not up == pod n/a 34
35. Azure ACS and Kubernetes Pod lifecycle born - alive - dead 35
36. Azure ACS and Kubernetes Pod deployment Manually Manifest file 36
37. k8s Services Azure ACS and Kubernetes 37
38. Azure ACS and Kubernetes k8s Services Pod 10.244.2.4 Pod 10.244.2.5 Pod 10.244.2.6 Pod 10.244.2.7 Pod 10.244.2.8 Service 10.244.2.10 DNS: upstream.myapp 38
39. k8s Labels Azure ACS and Kubernetes 39
40. Azure ACS and Kubernetes k8s Labels Pod 10.244.2.4 Pod 10.244.2.5 Pod 10.244.2.6 Pod 10.244.2.7 Pod 10.244.2.8 Service 10.244.2.10 DNS: upstream.myapp p p p p p db db lb p 40
41. k8s Deployments Azure ACS and Kubernetes 41
42. Azure ACS and Kubernetes k8s Deployments • Manifest files (YAML/JSON) • Rolling updates + rollbacks • Multiple concurrent versions • blue-green-deployment • Canary releases 42
43. DEMO Azure ACS and Kubernetes 43
44. Azure ACS and Kubernetes Azure Container Service (AKS) 44
45. AKS - Managed Kubernetes in Azure Azure ACS and Kubernetes az aks create –n myCluster –g myResourceGroup 45
46. AKS - Visual Studio Connected Environment Azure ACS and Kubernetes https://www.hanselman.com/blog/AnnouncingVisualStudioAndKubernetesVisualStudioConnectedEnvironment.aspx 46
47. Questions? Azure ACS and Kubernetes 47
48. Thanks! Azure ACS and Kubernetes 48
49. Resources Links • Commands for ACS/ACR/kubectl: https://github.com/PDMLab/acs-kubernetes-talk • Sample App: https://github.com/Azure-Samples/azure-voting-app • Kubernetes: https://kubernetes.io/ • Rolling Updates in k8s: https://kubernetes.io/docs/tutorials/kubernetes-basics/update-intro/ • Creating Secrets using kubectl: https://kubernetes.io/docs/concepts/configuration/secret/#creating-a-secret-using- kubectl-create-secret Azure ACS and Kubernetes 49