In this repo you can find example files used in the kubernetes from the ground up workshop.

These files are meant to accompany the workshop and might not make much sense with out the context.

The files in this repo are example files and are not supposed to represent real world use-cases or recommanded ways to define kubernetes application. They are for educational purposes only, not production usage.

you should have the following installed on your machine and available in your $PATH:

1. kubectl
2. minikube
3. VirtualBox
4. Vagrant
5. Helm

We begin the workshop with a general introduction to kubernetes. We'll discuss it's origin and the challenges it aims to solves. By the end of the first session we'll run hello kubernetes, which you can find instructions for in the 01 hello k8s folder.

Next, we'll take a closer look on the control plane components - the API server, schedular, controller manger and node components such as the kubelet. We will also move to declarative configuration instead of imperative and see how we can manage resources using files. A simple toy can be found in 02-deep-dive folder which illustrates how such a manifest file looks like.

In the third session will talk about multi node clusters, moving away from minikube. We'll look at different ways to affect scheduling considerations in pod assignment such as nodeSelector, taints and tolerations. We'll also talk about configuration management and introduce two new kubernetes resources - the ConfigMap and Secret. Lastly, we'll talk about managing a pod's compute resources and setting requests and limits to it's CPU and memory parameters. All the relevant files for the third session can be found under 03-multi-node-clusters folder.

in order to use all of the features we'll discuss in session 3, we'll need a cluster with more than one node so minikube won't do. While there are numerous ways to get a cluster running (e.g as a manged service), you can use the k8s-vagrant project which bootstraps a local kubernetes cluster using vagrant to provision the VMs and kubeadm for the cluster components.

In the final session we'll talk about helm, the kubernetes package manager. We'll look at what charts are and what possibilities we have when authoring one. We'll finish off with discussing chart functions and repositories

While I took special care to prepare things as best as possible, mistakes might have fallen in the example files found here. Feel free to submit an issue if you'd like or a PR to fix something.