Kubernetes yaml file examples

Important: The tab spacing for all kubernetes yaml files are 2 spaces.

• Networking YAML Files
  • Node Port Service file
  • External name Service file
  • Simple Ingress definition
  • Path redirection Ingress
  • Hostname redirection Ingress
  • Network Policy yaml
• Configuration YAMLs
  • Environment Definition
  • Pod using ConfigMap
  • Mounted ConfigMap Volume
• Batch and Cron Jobs
  • Batch job
  • Cron job
• Security related YAMLs
  • Pod level Security Context
  • Container level Security Context
  • Nginx https server
• Deployment and Pod / Node Selection
  • Node Selector
  • Node Affinity
  • Deployment file
  • Rolling Updates
  • ReplicaSet file
  • Health Probes
  • Quota on Computing Resources
  • Taints and Tollerations
• Persistent Volumes
  • Host Mounted Volume
  • NFS Mounted Volume
  • Persistent Volumes
  • Persistent Volume Claim

Basic Kubernetes YAML Structure

apiVersion: # Can have values such as v1 (Pod, Service) or apps/v1 (ReplicaSet, Deployment)
kind:       # The type of Kubernetes resource.
metadata:   # Usually only *name* and *labels* are allowed as child properties of metadata.
spec:       # Like metadata, it is a dictionary with values under it.
  containers   # Just an example of what could be under *spec*.  Here *containers*
               #  denotes an array/list where you can specify multiple container images.
    - name: # the '-' denotes the first item in the list.

Basic Pod YAML file

apiVersion: v1
kind: Pod
metadata:
  name: deb-pod
  namespace: default
  labels:
      app: deb-pod
spec:
  containers:
  - image: debian
    name: deb-pod
    command: ["sleep", "2h"]

Shown above is a basic Pod yaml definition to use the debian image and run the sleep 2h command to keep from completing and quitting.