Install cert-manager and TLS certificate

Install Cert-Manager

for details :
https://cert-manager.io/docs/tutorials/acme/nginx-ingress/

Install cert manager

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.12.0/cert-manager.yaml

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Install issuer

Let's encrypt give you two environment, staging and production.

• Create a ClusterIssuer rather than Issuer because the Issuer have namespace scope only into staging environnement. If you want to create issuer into a namespace, change ClusterIssuer with Issuer into Yaml file bellow

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apiVersion: cert-manager.io/v1
kind: ClusterIssuer
metadata:
  name: letsencrypt-staging
spec:
  acme:
    server: https://acme-staging-v02.api.letsencrypt.org/directory
    email: androidbakyass@gmail.com
    privateKeySecretRef:
      name: letsencrypt-staging
    solvers:
      - http01:
          ingress:
            ingressClassName: nginx

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ingress with cert-manager annotation

---

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: keycloak-development-ingress
  namespace: "keycloak-dev"
  annotations:
    cert-manager.io/issue-temporary-certificate: "true"
    acme.cert-manager.io/http01-edit-in-place: "true"
    cert-manager.io/cluster-issuer: "letsencrypt-staging"
    nginx.ingress.kubernetes.io/force-ssl-redirect: 'false'
    kubernetes.io/tls-acme: "true"
    nginx.ingress.kubernetes.io/enable-cors: "true"
spec:
  ingressClassName: nginx
  tls:
    - hosts:
        - bakdevops.com
      secretName: bakdevops-tls
  rules:
    - host: bakdevops.com
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              service:
                name: keycloak-development-service
                port:
                  number: 53582

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cert-manager create a certificate and a certificate request then a challange and then an order to validate the ceritifcate

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kubectl get challenges
kubectl get order
kubectl get certificate
kubectl get certificaterequest

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You can change and get prod issuer :

    cert-manager.io/cluster-issuer: "letsencrypt-prod"

Troubleshooting

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https://cert-manager.io/docs/troubleshooting/

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