demo-k3d.md

DEMO WITH K3D

This demo deploy a k3d Kubernetes cluster Requirements: Docker installed, k3d installed

K3D Examples

Launch cluster:

k3d cluster create --agents 2 --port 8081:30001@agent:0 --port 8080:80@loadbalancer

Use Kubeconfig:

export KUBECONFIG="$(k3d kubeconfig write 'k3s-default')"

Test deployment

Install dashboard

kubectl create ns kubernetes-dashboard
helm install kubernetes-dashboard --namespace kubernetes-dashboard helm-charts/dashboard

Test it:

kubectl get all -n kubernetes-dashboard
open "https://localhost:8081"

Install simple node application

kubectl create ns test
helm install test --namespace test helm-charts/simplenodewebapp

Test the app:

./loopcurl "http://localhost:8080"

Test scalability

Add new nodes:

k3d node create agent2 --replicas 5
k3d node list

kubectl get nodes -o wide 
docker ps

Scale the app!

kubectl -n test scale --replicas=8 deployment/test-simplenodewebapp

See the pods on various nodes:

kubectl -n test get pods

Test the app:

./loopcurl "http://localhost:8080"