practical-k8s

Internal Tikal workshop on kubectl

Install tooling

kubectl https://kubernetes.io/docs/tasks/tools/install-kubectl/ kubectx and kubens https://github.com/ahmetb/kubectx stern (optional) for tailing logs https://github.com/wercker/stern

Local kubernetes

Docker desktop

Kind OSX

https://kind.sigs.k8s.io/

brew install kind
./kind-cluster-with-local-registry.sh
kubectl create namespace practical-k8s
kubens practical-k8s

The original sh script can be found here

This will create a Kind k8s node in docker and a local registry running on port 5000.

K3s Linux

https://k3s.io/

curl -L -O https://github.com/k3s-io/k3s/releases/download/v1.20.2%2Bk3s1/k3s
sudo k3s server --write-kubeconfig-mode 644

Building the containers

K3S & Kind

This one will build the images for the local repository.

make docker-other

Docker Desktop

This one will build for the local docker with an arbitrary tag (to prevent registry pulling)

make docker

Using the correct image in Pod definitions

Before you apply the yaml files with kubectl apply, you need to make sure that you're using the right image.

K3S & Kind

image: localhost:5000/ping:latest

image: localhost:5000/pong:latest

Docker Desktop

image: ping:1

image: pong:1