Kubernetes for Developers

Declaring your first application

Go ahead and pick one of the examples and create a deployment declaration, and try creating one using the declaration.

I recommend making a directory called deploy, and putting your declaration file within that. This is using the flask example:

flask.yml

apiVersion: apps/v1beta1kind: Deploymentmetadata:  name: flask  labels:    run: flaskspec:  template:    metadata:      labels:         app: flask    spec:      containers:      - name: flask        image: quay.io/kubernetes-for-developers/flask:0.1.1        ports:         - containerPort: 5000

Remove the existing deployment before you try out your file:

kubectl delete deployment flask

It is a good practice to use the --validate option to have kubectl check the files, and you can use it with --dry-run to compare ...