Using Minikube (Kubernetes) for local Node.js development

$echo `whoami`

We have a problem

Developer Excuses 

• My code is compiling

• That person doesn't work here anymore

• That's a feature

• That's the way we've always done it

Best developer excuse

Just one problem..

Something helped with that

• Isolate apps in containers 

• Package deps in your app

• Run, build, ship anywhere 

• No more, it works on my machine

Wait, no my workflow is....

• Make app

• Blame devops

• Profit

New problem

• Build your app

• Run local and integration tests

• Ops team uses tool to publish new docker image

• Ops team comes back and says it doesn't work

Kubernetes (k8s) is an open-source system for automating deployment, scaling, and management of containerized applications.

Another problem

Difficult to set up

• kube-up.sh (deprecated)
• kops
• kube-aws (CoreOS)

Commitment to cloud provider

Google Cloud

AWS

Microsoft

I can use docker locally, can I use Kubernetes locally?

Minikube is a tool that makes it easy to run Kubernetes locally

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

•     kubectl
  • https://kubernetes.io/docs/tasks/tools/install-kubectl/
•     macOS
  •     xhyve driver, VirtualBox or VMware Fusion
•     Linux
  •     VirtualBox or KVM
•     Windows
  •     VirtualBox or Hyper-V
•     VT-x/AMD-v virtualization must be enabled in BIOS
•     Internet connection on first run

What you will need

• macOS
  • brew install minikube
• Linux
  • curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin
• Windows    
  • https://storage.googleapis.com/minikube/releases/latest/minikube-windows-amd64.exe
  • rename file to minikube.exe and add it to your path

Installing Minikube

• It can’t expose your application on type LoadBalancer
  •     – Kubernetes allows you to do this with the cloud provider but not locally, so you must expose your application with NODEPORT
• It can not help you convince your boss that you need a raise because of your new devOPS skills
• Use upgraded docker version outside of what minikube provides version 0.21 uses docker version 1.12 (Server)

What Minikube can't do

Project that I will demonstrate 

Fixit Vancouver

https://github.com/troy0820/fixit-vancouver

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

• I’m using minikube version 0.21
• minikube start
• minikube docker-env
• eval $(minikube docker-env)
• Downloaded images that I need ahead of time

• Using local docker images to use in your Minikube cluster
• Deploying those local images to your Minikube cluster
• Making replicaSets, healthChecks, autoscaling, dashboard, minikube services
• Using Ingress to expose multiple applications without using multiple LoadBalancers, in our case NODEPORTS

Demo Time