youngwookim / traefik-cert-manager

Traefik v2 + Cert-manager in k8s

Traefik v2 + cert-manager

Install the kubernetes cluster in GCP US region

export CLUSTER_NAME="cluster-traefik-v2"

gcloud container clusters create "${CLUSTER_NAME}" \
  --zone="us-west1-a" \
  --project="${GCLOUD_PROJECT}"

Install traefik v2

helm repo add traefik https://containous.github.io/traefik-helm-chart
helm repo update

kubectl create namespace traefik
helm install --namespace traefik traefik traefik/traefik --values traefik/values.yaml

Access to the dashboard

kubectl port-forward -n traefik $(kubectl get pods -n traefik --selector "app.kubernetes.io/name=traefik" --output=name) 9000:9000

http://127.0.0.1:9000/dashboard/

Install whoami

kubectl apply -f whoami/

Install cert-manager

# Install the CustomResourceDefinition resources separately
kubectl apply --validate=false -f https://raw.githubusercontent.com/jetstack/cert-manager/release-0.11/deploy/manifests/00-crds.yaml

# Create the namespace for cert-manager
kubectl create namespace cert-manager

# Add the Jetstack Helm repository
helm repo add jetstack https://charts.jetstack.io

# Update your local Helm chart repository cache
helm repo update

# Install the cert-manager Helm chart
helm install \
  cert-manager jetstack/cert-manager \
  --namespace cert-manager \
  --version v0.14.2

• Verifying the installation

kubectl get pods --namespace cert-manager

• Create cluster issuer + certificate for whoami.cert.containous.cloudand powpow.cert.containous.cloud

kubectl apply -f cert-manager/

• Check that the certificate has been generated

kubectl describe certificate -n whoami whoami-cert
kubectl describe certificate -n whoami powpow-cert

• Check the certificate issuer with the command:

echo | openssl s_client -showcerts -servername whoami.cert.containous.cloud -connect whoami.cert.containous.cloud:443 2>/dev/null | openssl x509 -inform pem -text | grep 'Issuer'

Cleanup

export CLUSTER_NAME="cluster-traefik-v2"

gcloud container clusters delete "${CLUSTER_NAME}" \
  --zone="us-west1-a" \
  --project="${GCLOUD_PROJECT}"
```