Can I use my azure DNS zone in more than one AKS clusters

Question

I have DNS zone with my domain name and also I have an AKS cluster. I want to create dev and staging environments with two separate clusters. So I want to use same domain with different subdomains in each cluster and integrate it in ingress.

Answer 1

If I understood you correctly, you need something like Exposing Applications on Azure.

So the idea is to use External DNS + nginx ingress controller. You

• Create 2 AKS clusters
• Create 2 DNS zones entries

az group create -n devresourcegroup -l yourlocation
az network dns zone create -g devresourcegroup -n dev.yourdomainname.com

az group create -n stagingresourcegroup -l yourlocation
az network dns zone create -g stagingresourcegroup -n staging.yourdomainname.com

• create dev.yourdomainname.com and staging.yourdomainname.com entries
• add permissions to modify dns zone for external-dns
• deploy externaldns in both clusters

I suppose external-dns-values.yaml should be like

dev-external-dns-values.yaml:

domainFilters:
  - dev.yourdomainname.com          # (optional) Just restrict to this                     
...
azure:
  secretName: azure-config-file     # Secret name created above for dev
extraArgs:
  azure-resource-group: devresourcegroup  # (Optional) Resource group name created above

staging-external-dns-values.yaml:

domainFilters:
  - staging.yourdomainname.com     # (optional) Just restrict to this domain
...                 
azure:
  secretName: azure-config-file     # Secret name created above for staging
extraArgs:
  azure-resource-group: stagingresourcegroup  # (Optional) Resource group name created above

• Install external-dns'es

helm install stable/external-dns --name external-dns -f dev-external-dns-values.yaml
helm install stable/external-dns --name external-dns -f staging-external-dns-values.yaml

• Install Ingress controllers

• deploy apps with proper ingress objects in each cluster. I mean this part

spec:
  rules:
  - host: 
    http:
      paths:
      - backend:
          serviceName: 
          servicePort: 
        path: