Workshop: Deploying and Scaling Node.js with Kubernetes

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Welcome

Ross Kukulinski

Currently PM @ NodeSource

Node.js Evangelism WG

Introduction to CoreOS - O’Reilly Media

Nathan White

Solutions Architect @ NodeSource

Responsible for Mongoose :-/

Really old. Like. Old.

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Welcome

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Today’s Roadmap • Introduction to Kubernetes

• Cloudy Time Machine Overview

• Ship to production

Just kidding!

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Container Orchestration

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If your architecture looks like this

Manage your containers with Ansible, Docker Swarm, Amazon ECS, etc.

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If your architecture looks like this

You need orchestration help

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Orchestration Overview

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Container Orchestration • Schedule containers to physical/virtual machines

• Restart containers if they stop

• Provide private container network

• Scale up and down

• Service discovery

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Kubernetes 101

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Kubernetes 101

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Kubernetes is an open source system for automating deployment, scaling, and

management of containerized applications.

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Kubernetes 101

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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!

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Kubernetes Terminology

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Kubernetes 101

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Terminology - Nodes • Is a worker machine in Kubernetes that runs your containers

• Node may be a VM or physical machine

• Each Node has the services necessary to run Pods

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Kubernetes 101

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Terminology - Pods • Smallest deployable unit of computing

• Group of one or more containers

• Containers within a Pod share a cluster-accessible IP address (and localhost)

• Containers within a Pod of access to shared volumes

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Kubernetes 101

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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

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Kubernetes 101

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Terminology - Deployments • Provide declarative updates for Pods/Replica Sets

• Manages one or more Replica Sets

• Primary mechanism for interacting with Pods!

• Automated rollouts and rollbacks :)

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Kubernetes 101

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Terminology - Services • An abstraction which defines a logical set of Pods

• Provides a mechanism for accessing them

• 3 types: ClusterIP, NodePort, LoadBalancer

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Kubernetes 101

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Terminology - Namespaces • Provide a virtual cluster backed my the same physical cluster

• Namespaces provide a scope for names. Names of resources need to be unique within a namespace, but not across namespaces.

• Divide cluster resources between multiple uses

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HelloWorld is so yesterday

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http://cloudytimemachine.com

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Demo Gods… we salute you!

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Workshop Resources

github.com/cloudytimemachine/nodeinteractive-workshop

Thank you.

Ross [email protected]

@rosskukulinski

Nathan [email protected]

@_nw_