I am trying to provision Azure AKS using terraform. When I create AKS with the LoadBalancer profile it will create a load balancer with static public IP. I need these IP to pass onto Nginx controller
What I am trying to do is I am using a data block to get the IPs created by Terraform and pass it to terraform helm templates to provision Nginx ingress controller
When I use data block
data "azurerm_public_ips" "example" {
resource_group_name = azurerm_kubernetes_cluster.aks.node_resource_group
attached = true
allocation_type = "Static"
name_prefix = "kubernetes"
depends_on = [
azurerm_kubernetes_cluster.aks]
}
output "ip" {
value = data.azurerm_public_ips.example.public_ips
}
I will be getting the output as follow
ip = [
{
"domain_name_label" = ""
"fqdn" = ""
"id" = "/subscriptions/xxxx/resourceGroups/xx/providers/Microsoft.Network/publicIPAddresses/kubernetesxx"
"ip_address" = "00.00.00.00"
"name" = "kubernetes-xxxxx"
},
]
What I want to achieve is to pass the value of ip_address to my helm chart
data "helm_repository" "incubator" {
name = "stable"
url = "https://kubernetes-charts.storage.googleapis.com"
}
resource "helm_release" "ingress" {
repository = data.helm_repository.incubator.url
chart = "nginx-ingress"
name = "test"
set {
name = "controller.service.loadBalancerIP"
value =data.azurerm_public_ips.example.public_ips[ip_address]
}
depends_on = [
data.azurerm_public_ips.example
]
}
When I tried with above method it throwing an error saying
Error: Invalid reference
on aks.tf , in output "ip":
value = data.azurerm_public_ips.example.public_ips[ip_address]
A reference to a resource type must be followed by at least one attribute access, specifying
the resource name.
you should do this:
element(data.azurerm_public_ips.example.public_ip, 1).ip_address
https://www.terraform.io/docs/configuration/functions/element.html
notice this is for 0.12, for 0.11 check this article