k3s/arcadis/templates/certificate.yaml

apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: {{ .Values.application.tls.certSecretName }}
spec:
  secretName: {{ .Values.application.tls.certSecretName }}
  dnsNames:
  - {{ .Values.ingress.host }}
  issuerRef:
    name: {{ .Values.ingress.tls.issuerRef.name }}
    kind: {{ .Values.ingress.tls.issuerRef.kind }}

# certificate.yaml
apiVersion: cert-manager.io/v1
kind: Certificate
metadata:
  name: arcadis-cert-secret
  namespace: arcadis
spec:
  secretName: arcadis-cert-secret
  issuerRef:
    name: letsencrypt-prod
    kind: ClusterIssuer
  commonName: www.arcadis.is
  dnsNames:
    - www.arcadis.is
    - arcadis.is