How to use yaml file in Terraform?

Question

I have kube.netes configuration in a seperate yaml file. I want to use that yaml file while running terraform can I do it? If yes, then how.

Answer 1

Yes you can, but you have to use 3rd-part kubernetes provider

# Retrieve an access token as the Terraform runner
data "google_client_config" "provider" {}

# Same parameters as kubernetes provider
data "google_container_cluster" "my-cluster" {
  name      = "my-cluster"
  location  = "europe-west4-a"
}

provider "kubectl" {
  load_config_file       = false
  host                   = "https://${google_container_cluster.my-cluster.endpoint}"
  cluster_ca_certificate = "${base64decode(google_container_cluster.my-cluster.master_auth.0.cluster_ca_certificate)}"
  token = data.google_client_config.provider.access_token
}

data "kubectl_filename_list" "manifests" {
    pattern = "./manifests/*.yml"
}

resource "kubectl_manifest" "test" {
    count     = length(data.kubectl_filename_list.manifests.matches)
    yaml_body = file(element(data.kubectl_filename_list.manifests.matches, count.index))
}

Link to provider https://registry.terraform.io/providers/gavinbunney/kubectl/latest/docs

Similar question How To Run kubectl apply commands in terraform

Answer 2

To answer to the original question specifically, which tags contain Azure and AKS , as well as the asker is requesting to use pure kube.netes yaml manifests in terraform - I've used gavinbunney/kubectl :

terraform {
  required_providers {

    kubectl = {
      source  = "gavinbunney/kubectl"
      version = "1.14.0"
    }
  }
}

provider "kubectl" {
  load_config_file = false
  host = azurerm_kubernetes_cluster.REDACTED.kube_config.0.host
  cluster_ca_certificate = base64decode(azurerm_kubernetes_cluster.REDACTED.kube_config.0.cluster_ca_certificate)
  token = yamldecode(azurerm_kubernetes_cluster.REDACTED.kube_config_raw).users[0].user.token
}

More info could be found in the original topic in Github

Answer 3

As far as I know this has been talked about for quite some time but as of yet hasn't been implemented: https://github.com/terraform-providers/terraform-provider-kubernetes/issues/141

If it helps, I often use this tool to convert YAML files to terraform specification. It is quite reliable. https://github.com/sl1pm4t/k2tf

Answer 4

According to my experience, Terraform supports the Kubernetes provider, but all the things in that provider are separate, such as deployment, pod, service and etc. It does not provide a way to load all the things from a configuration file.

So, to deploy from the configuration file, I recommend you put the kubectl apply -f config_file in the null_resource . And it's also simple to delete all the things that have deployed with multiple mull_resource, you just need to use the Terraform command terraform destroy , it will remove all the resources that deployed through the Terraform file.