Difficulty: beginner
Estimated Time: 10-15 minutes

Overview

A Service is an abstraction in kubernetes that allows you to connect to pods, it provides two main functionalities service-discovery and load-balancing.

Some typical uses of a Service are:

  • provide an endpoint to connect to an application, such as an nginx webserver
  • create a load-balancer that will distribute traffic to pods
  • create an external endpoint to a service outside of the cluster for example an RDS database

There are multiple types of services:

  • NodePort that exposes a port on all the nodes
  • LoadBalancer that create a loadbalancer depending on your environment
  • ClusterIP which creates a dedicated IP which can usually be only access inside of the cluster

Congratulations. You now know how to fix a a broken deployment!

Don’t stop now! The next scenario will only take about 10 minutes to complete.

Debug Problems

Exercise

This cluster has a broken manually launched deployment.

It also has a broken deployment create from a .yml file:

cat nginx-deployment.yml;echo

and a service that won't start:

cat clusterip-service.yml;echo

Terminal Host 2