Kubernetes Kops - Automation Night
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This document discusses Kubernetes operations (Kops), a tool for provisioning and managing Kubernetes clusters on AWS. Kops allows users to create, destroy, upgrade and maintain production-grade Kubernetes clusters from the command line. It automates the provisioning of Kubernetes clusters on AWS, deploying highly available Kubernetes masters and supporting upgrading and customizing clusters. The document demonstrates how to use Kops to build single and multi-master Kubernetes clusters on AWS with different configuration options.
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Kubernetes Kops - Automation Night
- 1. MAKE MONEY MATTER. Kubernetes Operations By Kasper Nissen (@phennex), DevOps Engineer @thelunarway
- 2. MAKE MONEY MATTER. Kubernetes Operations By Kasper Nissen (@phennex), DevOps Engineer @thelunarway
- 3. Vision We're living in the era of mobile/digital only – we believe banking and commerce should to. Therefore, our vision is to rethink the interaction with money and defining a complete new category - by introducing a new money app. It’s the complex coordination between banking services and commerce use: – How I save money. – How I get money. – How I spend money.
- 4. Product “ We own the data.
- 5. Kasper Nissen DevOps & Infrastructure Engineer @thelunarway Experience DevOps & Infrastructure Engineer @ LEGO (CITMABIS) (oursourced by IT Minds) for 5 months Senior/Software Engineer @ IT Minds (~4 years part time) Master thesis: KubeCloud - A Small-Scale Tangible Cloud Computing Environment. Interview with Software Engineering Daily: bit.ly/2paZ5lg Blogging about Cloud Native Tech @ www.kubecloud.io M. Eng. Computer Technology from Aarhus University - Department of Engineering. B. Eng. Information and Communication Technology from Aarhus University - School of Engineering
- 7. Written by: Matt Butcher Illustrated by: Bailey Beougher
- 17. WHAT DOES IT DO? Node Node Node Node Node Node Node Node Node Node big dataapp Bapp A database datacenter Cluster Manager
- 18. WHY ARE WE USING IT AT LUNAR WAY? Freedom Squads can deploy and more or less implement how they see fit Autonomous services Squads can work independent of other squads Continuous Delivery Kubernetes allows us to deploy multiple times a day. It’s easy to rollback in case something went wrong Flexibility We run many different type of workloads in the cluster. Gives us mobility to become cloud agnostic Scalable infrastructure Scaling the infrastructure is easy, both on node and container level High availability Kubernetes takes care of container failures, AWS Auto Scaling groups takes care of node failures Easy maintenance We are using Kubernetes Operations to help us spin up our clusters, and maintain them. 👍🎉
- 19. THAT’S GREAT, BUT HOW DO I GET STARTED? 🤓
- 21. WHAT IS THAT? 😱
- 22. THINK OF IT AS KUBECTL FOR CLUSTERS 👏
- 23. kubectl get pods
- 24. NAME READY STATUS RESTARTS AGE dns-controller 1/1 Running 0 13d etcd-server-events-ip 1/1 Running 0 13d etcd-server-ip 1/1 Running 0 13d kube-apiserver-ip 1/1 Running 0 13d kube-controller-manager 1/1 Running 0 13d
- 25. kops get cluster
- 26. $ kops get cluster NAME CLOUD ZONES private-k8s-cluster aws eu-west-1a,eu-west-1b,eu-west-1c
- 27. WHAT CAN I DO WITH IT?
- 28. kops helps you create, destroy, upgrade and maintain production-grade, highly available, Kubernetes clusters from the command line
- 29. WHERE?
- 30. AWS (Officially supported) GCP (alpha) VMWARE vSPHERE (alpha)
- 31. FEATURES?
- 32. •Automates the provisioning of Kubernetes clusters in (AWS) •Deploys Highly Available (HA) Kubernetes Masters •Supports upgrading from kube-up •Built on a state-sync model for dry-runs and automatic idempotenc •Ability to generate configuration files for AWS CloudFormation and Terraform configuration •Supports custom Kubernetes add-ons •Command line autocompletion •Community supported!
- 34. PREREQUISUITES.
- 36. ROUTE53 HOSTED ZONE SETUP Follow the guide: https://github.com/kubernetes/kops/blob/ master/docs/aws.md
- 38. DEMO 1: SINGLE MASTER IN PUBLIC ZONE 3 NODES
- 39. s3://phennex-state-store VPC api.public-single-master.phennex.com kubectlkops autoscaling group autoscaling group eu-west-1a public
- 40. $ kops create cluster --name $KOPS_NAME --state $KOPS_STATE_STORE --dns-zone $PUBLIC_HOSTED_ZONE_ID --node-count 3 --zones eu-west-1a --master-zones eu-west-1a --cloud aws --node-size t2.medium --master-size t2.medium --yes
- 42. DEMO 2: MULTIPLE MASTERS IN PRIVATE ZONES 3 NODES
- 43. s3://phennex-state-store VPC api.private-multiple-masters.phennex.com kubectl kops autoscaling group autoscaling group autoscaling group autoscaling group bastion.private-multiple-masters.phennex.com eu-west-1a eu-west-1b eu-west-1c privatepublic
- 44. $ kops create cluster --name $KOPS_NAME --state $KOPS_STATE_STORE --node-count 3 --dns-zone $PRIVATE_HOSTED_ZONE_ID --zones eu-west-1a,eu-west-1b,eu-west-1c --master-zones eu-west-1a,eu-west-1b,eu-west-1c --cloud aws --node-size t2.medium --master-size t2.medium --bastion --topology private --networking weave --yes
- 46. AWESOME! THAT WAS EASY… 👍
- 47. WHAT IF YOU WANT YOUR CLUSTER TO RUN IN AN EXISTING VPC?
- 49. MANY MORE CONFIGURATION OPTIONS TO CHOOSE FROM…
- 50. --cloud-labels ”Team=Dev” --image some-image (Ubuntu, CentOS, RHEL7, CoreOS) --networking calico, flannel --node-security-groups --master-security-groups --admin-access <SOME IP> --ssh-public-key=/Users/.. --out=. --target=terraform
- 52. $ kops upgrade cluster
- 53. YOU CAN ALWAYS EDIT YOUR CLUSTER CONFIGURATION $ kops edit cluster $ kops edit ig --name=<CLUSTER> nodes
- 54. ROLLING UPDATES (default pretty bad!) Use feature flag: $ export KOPS_FEATURE_FLAGS="+DrainAndValidateRollingUpdate" $ kops rolling-update cluster
- 56. SCALING THE CLUSTER $ kops edit ig --name $KOPS_NAME nodes
- 58. EXTRA… (if we have time)
- 60. CLEAN UP!
- 62. OTHER SOLUTIONS
- 64. Thank you! Catch me on Twitter @phennex Or in the Slack Community: Cloud Native DK (https://cloudnative-dk.herokuapp.com/ )