Rancher k8s Training - Oct 4 - Rajashree Mandaogane.pptx

Rancher k8s Training

1. Getting Started with Kubernetes and Rancher 2.0 Rancher Labs Training #rancherk8s

2. Today’s objectives Technical introduction to Kubernetes using Rancher Keep the slides to a minimum Demo, then demo some more Questions are always welcome We won’t leave until all your questions are answered! 1

3. 2 Matthew Scheer Community Advocate @ matthew_scheer Slack: @ matthew Rajashree Mandaogane Software Engineer Twitter: @rajashree_28 Slack: rajashree Github :  mrajashree

4. For the purpose of this training, we’re assuming you understand basic Docker concepts … . #rancherk8s 3

5. Resources - docs 4 https:// rancher.com /docs/rancher/v2.x/en/quick-start-guide/ #rancherk8s

6. Resources - forums 5 http://forums.rancher.com #rancherk8s http ://slack.rancher.io

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13. Rancher & Kubernetes - better together Open source container manager used to run Kubernetes in production Easy-to-use interface for k8s configuration and deployment Infrastructure management across multiple clusters and clouds Automated deployment of the latest k8s release Workload, RBAC, policy, and project management 24x7 enterprise-grade support Rancher Infrastructure Services Storage, networking, load balancing, security, etc. Rancher Kubernetes Distribution Certified and supported distribution that closely follows the upstream Kubernetes project 7

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16. Kubernetes 101 Pods Deployments Services Config maps Ingresses 15 #rancherk8s

17. Pods Smallest unit that can be deployed in Kubernetes Consist of one or more containers that are always scheduled together Each pod is given a unique IP address Containers in a pod can speak to each other via localhost #rancherk8s 8

18. Pods are confusing If the explanation is confusing, don’t worry too much Pods typically contain only a single container Try to think of pods as containers for the remainder of the training 17 #rancherk8s

19. Pods 18

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21. Replication Controller and Replica Set Defines the desired scale and state of a group of pods SOT for driving the current state to the desired state (in controller manager) 20

22. Replica Set 21

23. Replica Set 22

24. Replica Set 23

25. Deployments Level of abstraction above ReplicaSets Deployments create and update ReplicaSets Allow you to easily scale and perform rolling upgrades 24 #rancherk8s

26. Deployments 25

27. Deployments 26

28. Deployments 27

29. Deployments 28

30. Deployments 29

31. Services Define a DNS entry that can be used to refer to a group of pods Provide a consistent endpoint for the group of pods Different types: nodePort , clusterIP , loadbalancer 30 #rancherk8s

32. Services 31 Service IP 123.456.789

33. Config maps Allow storing of arbitrary configuration values and files Exposed in pods as either environment variables or as local storage Decoupled storage of configuration from pod spec 32 #rancherk8s

34. apiVersion : v1  kind: ConfigMap   metadata:    name: dev-config    namespace: default  data:    Item1: dev-stuff    Item2: more dev stuff Config Maps 33 apiVersion : v1  kind: ConfigMap   metadata:    name: dev-config    namespace: default  data:    Item1: qa -stuff    Item2: more qa stuff apiVersion : v1  kind: ConfigMap   metadata:    name: dev-config    namespace: default  data:    Item1: prod-stuff    Item2: more prod stuff

35. Ingresses Define how traffic outside the cluster is routed to inside the cluster Used to expose Kubernetes services to the world Route traffic to internal services based on factors such as host and path Ingress is usually implemented by a load balancer (Nginx, HAProxy , AWS ELB, etc …) 34 #rancherk8s

36. https://my-nginx-app.cluster.com https://cluster.com/my-nginx-app Ingresses 35 Service IP Ingress Controller

37. Rancher 2.0 101 Setting up Rancher Clusters Authentication & Security Storage Projects Namespaces Catalogs CLI/API/ Kubectl

38. 37 Demo Time

39. Join other Rancher users in Slack https://slack.rancher.io #Kubernetes channel 15

40. Thank you rancher.com/kubernetes #rancherk8s