This talk was given on November 8, 2017 at the OpenStack Summit Sydney event by Rob Hirschfeld and Ihor Dvoretskyi. ABSTRACT Kubespray (formerly Kargo) – is a project under Kubernetes community umbrella. From the technical side, it is a set of tools, that bring the possibility to deploy production-ready Kubernetes cluster easily. Kubespray supports multiple Linux distributions to host the Kubernetes clusters (including Ubuntu, Debian, CentOS/RHEL and Container Linux by CoreOS), multiple cloud providers to be used as an underlay for the cluster deployment (AWS, DigitalOcean, GCE, Azure and OpenStack), together with the ability to use Bare Metal installations. It may consume Docker and rkt as the container runtimes for the containerized workloads, as well as a wide variety of networking plugins (Flannel, Weave, Calico and Canal); or built-in cloud provider networking instead. In this talk we will describe the options of using Kubespray for building Kubernetes environments on OpenStack and how can you benefit from it.

1. Building Kubernetes-based
highly-customizable environments on
OpenStack with Kubespray (ex-Kargo)
Ihor Dvoretskyi
Developer Advocate, Cloud Native Computing Foundation
Rob Hirshfeld, RackN
CEO

2. Why Kubernetes?
● One of the largest open source projects in the world
● Supports multiple runtime engines
● Supports multiple networking solutions
● Supports multiple cloud and bare-metal environments
● Open source, written in Go

3. The State of Ecosystem

4. Kubernetes Installers
● More than 30 community-driven and commercial
installing tools and distributions
● Community-driven (most popular):
○ Kubeadm
○ Kops
○ Kubespray

5. And more Kubespray alternatives
● Samsung - Kraken 2
● Cloud Foundry - BOSH KUBO
● Mesosphere Kubernetes
● Ubuntu Charms
● Rancher
● More????

6. Kubespray highlights

7. Kubespray Highlights
● Started by a group of independent developers (originally as Kargo)
● Ansible-based
● Provides deployment and LCM for Kubernetes clusters
● Variety of configuration options
● Kubernetes Incubated project (graduation is coming!)
● Project page - https://github.com/kubernetes-incubator/kubespray

8. Kubespray Key Features
● Automatic HA (demo)
● Certificate Rotation (some manual steps)
● Popular Cloud Integrations (including OpenStack)
● Secure by Default
● Upgrades Included (demo)
● Incremental Node Add (demo)
● Spins up add on projects like Helm
● Multi-platform CI/CD

10. Demo

11. Bonus Node Admission

12. Kubelet Config from API Server
Kubelet
API Server
Provision
1 Boot
2Reg
3 Verify
4Config

13. Why Node Admission?
● Immutable Configuration
● Auto Scaling
● Faster Node Install
● Centralized Configuration of Cluster
● Coordinated Upgrades

14. Immutable Upgrade Pattern
A A
B B
New
?

15. Questions?
● Project page - https://github.com/kubernetes-incubator/kubespray
● Kubernetes Slack, #kubespray