Azure ACS and Kubernetes

Talk about Microservices, Docker and Kubernetes in Microsoft Azure. at .NET Usergroup Karlsruhe.
https://www.meetup.com/NET-User-Group-Karlsruhe/events/244451653/

Transcript

1. Azure ACS and Kubernetes: Microservices On Steroids Alexander Zeitler .NET Usergroup Karlsruhe, 16.11.2017 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: Microservices On Steroids 2
3. Agenda • Microservices • Challenges • Docker • Azure ACS / Kubernetes • Azure AKS Azure ACS and Kubernetes: Microservices On Steroids 3
4. Microservices Azure ACS and Kubernetes: Microservices On Steroids 4
5. Microservices is a variant of the service-oriented architecture (SOA) architectural style that structures an application as a collection of loosely coupled services. In a microservices architecture, services should be fine-grained and the protocols should be lightweight. The benefit of decomposing an application into different smaller services is that it improves modularity and makes the application easier to understand, develop and test. The benefit of decomposing an application into different smaller services is that it improves modularity and makes the application easier to understand, develop and test. It also parallelizes development by enabling small autonomous teams to develop, deploy and scale their respective services independently Microservices-based architectures enable continuous delivery and deployment. Azure ACS and Kubernetes: Microservices On Steroids Microservices 5
6. • Web Front-End • Product Data Management (PDM) • Warehouse • Purchasing • Logistics • Payment • Billing • Identity Azure ACS and Kubernetes: Microservices On Steroids Example: E-Commerce 6
7. • Focus on a single Domain • Two Pizza Rule • Autonomous • Small • Shared Nothing (Exclusive State) • Async Azure ACS and Kubernetes: Microservices On Steroids Principles 7
8. • Cross Platform • Easier Replacement / Refactoring • Decoupled Deployment • Code Ownership Azure ACS and Kubernetes: Microservices On Steroids Advantages 8
9. Challenge: Complexity Azure ACS and Kubernetes: Microservices On Steroids 9
10. • Significant Operations Overhead • Substantial DevOps Skills Required • Implicit Interfaces • Duplication Of Effort • Distributed System Complexity • Asynchronicity Is Difficult! • Testability Challenges Azure ACS and Kubernetes: Microservices On Steroids Complexity 10
11. Challenge: Deployment Azure ACS and Kubernetes: Microservices On Steroids 11
12. • Fast • Reliable • Repeatable Azure ACS and Kubernetes: Microservices On Steroids Deployment 12
13. Azure ACS and Kubernetes: Microservices On Steroids Automate Deployment! 13
14. Azure ACS and Kubernetes: Microservices On Steroids The perfect deployment? 14
15. Azure ACS and Kubernetes: Microservices On Steroids Build, ship and run any application anywhere 15
16. Azure ACS and Kubernetes: Microservices On Steroids 16 a b
17. Azure ACS and Kubernetes: Microservices On Steroids vs. 17
18. Azure ACS and Kubernetes: Microservices On Steroids 18 a b c
19. Put it in a container! Azure ACS and Kubernetes: Microservices On Steroids 19
20. Azure ACS and Kubernetes: Microservices On Steroids 20
21. Azure ACS and Kubernetes: Microservices On Steroids Build package application in a container image 21
22. Azure ACS and Kubernetes: Microservices On Steroids Ship Move container image to another machine 22
23. Azure ACS and Kubernetes: Microservices On Steroids Run Execute container(s) based on image 23
24. Azure ACS and Kubernetes: Microservices On Steroids Any Application 24
25. Azure ACS and Kubernetes: Microservices On Steroids Anywhere 25
26. Build Azure ACS and Kubernetes: Microservices On Steroids FROM ubuntu:16.04 MAINTAINER Alexander Zeitler <alexander.zeitler@pdmlab.com> RUN apt-get update RUN apt-get install -y nginx RUN echo 'Hi, I am your father...erm in your container' \>/usr/share/nginx/html/index.html CMD [ "nginx", "-g", "daemon off;" ] EXPOSE 80 26
27. Ship Azure ACS and Kubernetes: Microservices On Steroids Image name <username>/<reponame> e.g. alexzeitler/nginx docker push docker pull https://hub.docker.com/ 27
28. Run Azure ACS and Kubernetes: Microservices On Steroids docker run alexzeitler/nginx docker run ubuntu echo hello world 28
29. Azure ACS and Kubernetes: Microservices On Steroids Docker ecosystem Engine Compose Hub Registry Machine Swarm Cloud 29
30. Containers in Azure Azure ACS and Kubernetes: Microservices On Steroids 30
31. Azure ACS and Kubernetes: Microservices On Steroids Azure Container Service (ACS) 31
32. Azure ACS and Kubernetes: Microservices On Steroids ACS Orchestrators Docker Swarm Mesos / DC/OS Kubernetes 32
33. Kubernetes Azure ACS and Kubernetes: Microservices On Steroids Greek for "Helmsman" The person who steers a ship 33
34. Azure ACS and Kubernetes: Microservices On Steroids Kubernetes Borg Omega 34
35. Azure ACS and Kubernetes: Microservices On Steroids Kubernetes == k8s 35
36. Azure ACS and Kubernetes: Microservices On Steroids k8s Architecture HTTPS Db Messaging Log Auth KV LB Orders 36
37. Azure ACS and Kubernetes: Microservices On Steroids k8s Architecture HTTPS Db Messaging Log Auth KV LB Orders 37
38. Azure ACS and Kubernetes: Microservices On Steroids k8s Architecture HTTPS Db Messaging Log Auth KV LB Orders Node 2 Node 3 38 Node 1
39. Azure ACS and Kubernetes: Microservices On Steroids k8s Architecture { /* App */ } Master Node Node Node Node Node Pods Pods Pods 39
40. Azure ACS and Kubernetes: Microservices On Steroids k8s Architecture Master Node Node Node Linux Linux Linux Linux ENV ENV ENV ENV 40
41. k8s Masters Azure ACS and Kubernetes: Microservices On Steroids 41
42. Azure ACS and Kubernetes: Microservices On Steroids 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 42
43. Azure ACS and Kubernetes: Microservices On Steroids k8s Masters Master apiserver KV Node Node Node kubectl Commands (JSON) CM 43
44. k8s Nodes Azure ACS and Kubernetes: Microservices On Steroids 44
45. Azure ACS and Kubernetes: Microservices On Steroids k8s Nodes Node Linux 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 45
46. k8s Desired State Azure ACS and Kubernetes: Microservices On Steroids 46
47. Azure ACS and Kubernetes: Microservices On Steroids 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 47
48. Azure ACS and Kubernetes: Microservices On Steroids 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 48
49. Azure ACS and Kubernetes: Microservices On Steroids 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 49
50. k8s Pods Azure ACS and Kubernetes: Microservices On Steroids 50
51. Azure ACS and Kubernetes: Microservices On Steroids Unit of scale Swarm Pod 51
52. Azure ACS and Kubernetes: Microservices On Steroids k8s Pods Pod Environment Namespaces Network stack ... n Containers trnsprt link net IPC mount 52
53. Azure ACS and Kubernetes: Microservices On Steroids k8s Pod Coupling Node Pod AI-Log App 53
54. Azure ACS and Kubernetes: Microservices On Steroids k8s Scaling Pods Node Pod Node Pod Node Pod Node Pod Pod Pod Do Don’t 54
55. Azure ACS and Kubernetes: Microservices On Steroids Pods are atomic containers not up == pod n/a 55
56. Azure ACS and Kubernetes: Microservices On Steroids Pod lifecycle born - alive - dead 56
57. Azure ACS and Kubernetes: Microservices On Steroids Pod deployment Manually Manifest file 57
58. k8s Services Azure ACS and Kubernetes: Microservices On Steroids 58
59. Azure ACS and Kubernetes: Microservices On Steroids 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: db.myapp 59
60. k8s Labels Azure ACS and Kubernetes: Microservices On Steroids 60
61. Azure ACS and Kubernetes: Microservices On Steroids 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: db.myapp p p p p p db db lb p 61
62. k8s Deployments Azure ACS and Kubernetes: Microservices On Steroids 62
63. Azure ACS and Kubernetes: Microservices On Steroids k8s Deployments • Manifest files (YAML/JSON) • Rolling updates + rollbacks • Multiple concurrent versions • blue-green-deployment • Canary releases 63
64. DEMO Azure ACS and Kubernetes: Microservices On Steroids 64
65. Azure ACS and Kubernetes: Microservices On Steroids Azure Container Service (AKS) 65
66. AKS - Managed Kubernetes in Azure Azure ACS and Kubernetes: Microservices On Steroids az aks create –n myCluster –g myResourceGroup 66
67. AKS - Visual Studio Connected Environment Azure ACS and Kubernetes: Microservices On Steroids https://www.hanselman.com/blog/AnnouncingVisualStudioAndKubernetesVisualStudioConnectedEnvironment.aspx 67
68. Questions? Azure ACS and Kubernetes: Microservices On Steroids 68
69. Thanks! Azure ACS and Kubernetes: Microservices On Steroids 69
70. 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/ Images • 17/a: https://upload.wikimedia.org/wikipedia/commons/c/c5/Britain_Delivers_the_Goods_in_Wartime-_Dock_Workers_in_Bristol,_England,_1940_D1224.jpg • 17/b: http://i1.wp.com/www.chinasmack.com/wp-content/uploads/2013/09/historical-shanghai-photos-early-20th-century-14.jpg • 19/a: https://homefaraway.files.wordpress.com/2012/04/april-24-2012-026.jpg • 19/b: https://upload.wikimedia.org/wikipedia/commons/4/4d/Locomotive_4700_with_a_container_train_at_Concordancia_de_Poceirao.jpg • 19/c: https://guardian.ng/wp-content/uploads/2016/03/trucks.jpg Azure ACS and Kubernetes: Microservices On Steroids 70