Rancher Kubernetes Training

Necessary tools

• terraform
• envsubst
• k3sup
• kubectl
• helm

Setup infrastructure

cd 00-infrastructure
terraform apply
./print_install_commands.sh

Run k3sup commands and export Kubeconfig

cd ..

Create first pod

kubectl apply -f 01-pod/

• Describe a pod
• Show logs of a pod

Create first deployment

kubectl apply -f 02-deployment/

Follow rollout

kubectl rollout status deployment rancher-demo
kubectl get pods --all-namespaces -o wide

Access application

kubectl run curl --image=radial/busyboxplus:curl -i --tty --rm
curl http://POD_IP

Create service

kubectl apply -f 03-service/
kubectl get services
kubectl describe service rancher-demo

Access application

kubectl run curl --image=radial/busyboxplus:curl -i --tty --rm
curl http://rancher-demo

Create ingress

Update IP in ingress.yaml (kubectl get nodes -o wide)

kubectl apply -f 04-ingress/
kubectl get ingress

Go to ingress

Update deployment

kubectl apply -f 05-deployment-update/
watch kubectl get pods

Configure resources and health checks

Show current resources

kubectl top pods

kubectl apply -f 06-deployment-advanced-features/
watch kubectl get pods

Describe not ready pod

Fix health check

kubectl apply -f 06-deployment-advanced-features/
watch kubectl get pods

Add configmap

kubectl apply -f 07-configmap/
watch kubectl get pods

Install Rancher

helm repo add jetstack https://charts.jetstack.io
helm repo add rancher-latest https://releases.rancher.com/server-charts/latest

cd 08-rancher
./print_install_commands.sh

Install Rancher

cd ..

Use Rancher

• Creating additional clusters
• Authentication & RBAC
• Cluster Explorer
• Apps & Marketplace

Monitoring & Logging

Install Rancher Monitoring

Optional:

Install Rancher Logging Install Loki

helm repo add loki https://grafana.github.io/loki/charts
helm upgrade --install loki loki/loki --namespace loki --create-namespace

Configure logging flow and grafana datasource

kubectl apply -f 09-monitoring-logging
kubectl rollout restart deployment -n cattle-monitoring-system rancher-monitoring-grafana

Go to grafana, login with admin/prom-operator, go to explorer, show logs {namespace="default"}.

Cleanup

cd 00-infrastructure
terraform destroy
cd ..