DevOps: Puppet, Docker, and Kubernetes

Working with configuration files

Kubernetes supports two different file formats YAML and JSON. Each format can describe the same function of Kubernetes.

Getting ready

Both YAML and JSON have official websites to describe the standard format.

YAML

The YAML format is very simple with less syntax rules; therefore, it is easy to read and write by a human. To know more about YAML, you can refer to the following website link:

http://www.yaml.org/spec/1.2/spec.html

The following example uses the YAML format to set up the nginx pod:

apiVersion: v1
kind: Pod
metadata:
  name: nginx
  labels:
    name: nginx
spec:
  containers:
  - name: nginx
    image: nginx
    ports:
    - containerPort: 80

JSON

The JSON format is also simple and easy to read by humans, but more program-friendly. ...