kubernetes-overhyped
Usefull tools
- k3d - Little helper to run Rancher Lab's k3s in Docker
- kubectl - The Kubernetes command-line tool
- Helm v3 - Helm charts
00 Setup
Connect to kubernetes cluster (may be created locally by k3d).
You can check the k8s nodes running kubectl get nodes.
Install infrastruccture applications
./infrastructure/install.sh
kubectl apply -f infrastructure01 Simple deployment
Simple Hello World app with support for TLS/SSL out of the box.
kubectl apply -f 01-deployment.yaml
Get information about deployed pods
kubectl get pods -o wide
When it is ready get response from deployed application
curl -i devjs.ml
02 Helm Chart
Simple Hello World deployed from a Helm Chart, so that we can write less code to deploy the app.
kubectl apply -f 02-helm-chart.yaml
Get information about deployed pods
kubectl get pods -o wide
When it is ready get response from deployed application
curl -i devjs.ml
03 Horizontal Scaling
Simple Hello World deployed from a Helm Chart with support for a custom metric and scaling rules.
kubectl apply -f 03-autoscaling.yaml
Get information about deployed pods
kubectl get pods -o wide
When it is ready get response from deployed application
curl -i devjs.ml
Generate some trafic to trigger scaling mechanism
hey -z=60s -q 50 -c 50 https://devjs.ml
Watch how kubernetes is creating a new pods with our application
watch kubectls get pods -n hello-world