learn_yaml_files.md

Kubernetes yaml file deployments

Yaml file definition

https://kubernetes.io/docs/user-guide/walkthrough/

The simplest pod definition describes the deployment of a single container. For example, an nginx web server pod might be defined as such:

apiVersion: v1
kind: Pod
metadata:
  name: nginx
spec:
  containers:
  - name: nginx
    image: nginx:1.7.9
    ports:
    - containerPort: 80

liveness probes and variables

https://kubernetes-v1-4.github.io/docs/user-guide/liveness/

Ensure that health checks are performed against your instance

apiVersion: v1
kind: Pod
metadata:
  name: nginx
  #namespace: default
spec:
  containers:
  - name: nginx
    image: nginx:1.7.9
    ports:
    - containerPort: 80
    env:       
      - name: "SOMEVARIABLE"
        value: "somevalue"
    livenessProbe:
      httpGet:
        path: /
        port: 80
      initialDelaySeconds: 15
      timeoutSeconds: 1

Referencing images from your own registry

To allow for authentication to your azrue container registry make sure that your kubernetes service principal has at least Reader permissions on your container registry: https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/container-registry/container-registry-auth-aks.md

apiVersion: "v1"
kind: Pod
metadata:
  name: somePodName
  labels:
    name: someLabelName
spec:
  containers:
    - name: blue
      image: someRegistryOnAzure.azurecr.io/someImage:latest
      ports:
        - containerPort: 80
          protocol: TCP