Developing applications for Kubernetes using  Docker for Mac

$echo `whoami`

Cloud Software Engineer at Cloudreach

Does anyone use Kubernetes?

Does Docker do Kubernetes?

YES. THEY. DO.

What does that even mean?

• Use Kubernetes instead of Docker Swarm

• Allow a 1 node local cluster

• Add additional docker commands that play nice with Kubernetes

Great, how do we start?

You already have it, if you have Docker installed 

What Docker for Mac doesn't include...

• Default Ingress Controller

• Kubernetes Dashboard

• Heapster

• Storage Class

Don't worry, because you can add it to your cluster 

But this will mess up my workflow 

Why should I switch my workflow

• Speed

• Modularity

• Isolation

Unless....

Why not Minikube?

•  Single-node Kubernetes cluster inside a VM on your computer
• Allows you to use kubectl to access cluster for development purposes
• Test strategies on your computer instead of in the cloud

• Uses VirtualBox or xhyve driver
• Not bound to localhost
• You have to use minikube IPs

BUT

• docker stack deploy -c <docker-compose file> <name>​​

So how do I start

• kubectl create -f <kubernetes.yaml file>​​

• helm install <name of chart>

This is what I did before we start this demo….

• I installed the Kubernetes dashboard
• I installed the Nginx ingress controller
• Created a helm chart with values
• Downloaded images that I need ahead of time

https://github.com/troy0820/revconf​

• Using local docker images to use in your cluster
• Deploying those local images to your cluster​
• Use docker stack deploy command 
• Using helm to manage our deployments

Demo Time