Presentation by Ross Kukulinski at the Philadelphia Docker Meetup on September 27, 2016. This talk will introduce Kubernetes, the industry standard system for automatic deployment, scaling, and management of containerized applications. We'll walk through key concepts and you will learn how to deploy a multi-tier application to Kubernetes in 10 minutes.

1. September 27, 2016
Introduction to Kubernetes
Ross Kukulinski
@RossKukulinski

2. ©2016 NodeSource @RossKukulinski
Welcome
2
Ross Kukulinski
Product Manager @ NodeSource
Node.js Evangelism WG
Introduction to CoreOS - O’Reilly Media

3. ©2016 NodeSource @RossKukulinski3
Welcome
Today’s Roadmap
• Container Orchestration
• Kubernetes 101
• DEMO FOR THE DEMO GODS

4. ©2016 NodeSource @RossKukulinski4

5. ©2016 NodeSource @RossKukulinski
Container Orchestration
5

6. ©2016 NodeSource @RossKukulinski6
If your architecture looks like this
Manage your containers
with Ansible, Docker
Swarm, ECS, etc.

7. ©2016 NodeSource @RossKukulinski7
If your architecture looks like this
You need orchestration help

8. ©2016 NodeSource @RossKukulinski8
Orchestration Overview
Container Orchestration
• Schedule containers to physical machines
• Restart containers if they stop
• Provide private container network
• Scale up and down
• Service discovery

9. ©2016 NodeSource @RossKukulinski
Kubernetes 101
9

10. ©2016 NodeSource @RossKukulinski
Kubernetes is an open
source system for
automating deployment,
scaling, and management of
containerized applications
Kubernetes 101
10

11. ©2016 NodeSource @RossKukulinski11
Kubernetes 101
Kubernetes Orchestration
• Schedules containers to physical machines
• Service discovery & load balancing
• Horizontal application scaling
• Automated rollouts & rollbacks
• Secret and configuration management
• Storage orchestration
• … and a whole lot more!

12. ©2016 NodeSource @RossKukulinski
Kubernetes Nomenclature
12

13. ©2016 NodeSource @RossKukulinski13
Kubernetes 101
Terminology - Nodes
• Is a worker machine in Kubernetes
• Node may be a VM or a physical machine
• Each Node has the services necessary to run Pods

14. ©2016 NodeSource @RossKukulinski14
Kubernetes 101
Terminology - Pods
• Smallest deployable units of computing
• Group of one or more containers
• Containers within Pod share a cluster-accessible IP
address (and localhost)
• Containers within a Pod have access to shared
volumes

15. ©2016 NodeSource @RossKukulinski15
Kubernetes 101
Terminology - Replica Sets
• Ensures that a specified number of Pod “replicas”
are running at one time
• If there are too many, it will kill some Pods
• If there are too few, it will start more

16. ©2016 NodeSource @RossKukulinski16
Kubernetes 101
Terminology - Deployments
• Provides declarative updates for Pods/Replica Sets
• Manages one or more Replica Sets
• Primary mechanism for interacting with Pods!
• Automated rollouts and rollbacks :)

17. ©2016 NodeSource @RossKukulinski17
Kubernetes 101
Terminology - Services
• An abstraction which defines a logical set of Pods
• Provides a mechanism for accessing them
• 3 Types: ClusterIP, NodePort, LoadBalancer

18. ©2016 NodeSource @RossKukulinski
Let’s play with Kubernetes
right now!
18

19. ©2016 NodeSource @RossKukulinski
github.com/rosskukulinski/docker-philly
19

20. Thank you.
Ross Kukulinski
ross@nodesource.com
@RossKukulinski