Kubernetes Concept

basics building block on kubernetes of today's workshop

Manifests

You can define kubernetes objects in a manifest file format based on yaml standard. As you can see in the example below.

Example:

apiVersion: v1
kind: Service
metadata:
  # Name of the service
  name: wonderfulapp-service
spec:
  # Route traffic to any Pods matching these labels
  selector:
    app: wonderfulapp
    environment: dev
  ports:
    # publish TCP port 80, and expect pods to be listening on the same port
    - protocol: TCP
      port: 80

Kubernetes Objects used in this hands-on

Kind	Definition	Group	Version	API
Pods	A pod is the basic execution unit of a Kubernetes application.	apps	v1	workload
ReplicaSet	A ReplicaSet maintain a stable set of replica pods running	apps	v1	workload
Deployment	define desired state for pods & replicaset	core	v1	workload
Services	An abstract way to expose and loadbalance an application running on a set of pods	core	v1	service api
Ingress	An API object that manages external access to the services in a cluster, typically HTTP	networking.k8s.io	v1beta1	service api

Anatomie of kubernetes external request