Remove Grafana provider for EKS (#179)

* Remove Grafana provider for EKS

* Drop provider

* Add provider constraint config

examples/existing-cluster-java/README.md

@@ -193,7 +193,6 @@ terraform destroy -var-file=terraform.tfvars
 |------|---------|
 | <a name="requirement_terraform"></a> [terraform](#requirement\_terraform) | >= 1.1.0 |
 | <a name="requirement_aws"></a> [aws](#requirement\_aws) | >= 4.0.0 |
-| <a name="requirement_grafana"></a> [grafana](#requirement\_grafana) | >= 1.25.0 |
 | <a name="requirement_helm"></a> [helm](#requirement\_helm) | >= 2.4.1 |
 | <a name="requirement_kubectl"></a> [kubectl](#requirement\_kubectl) | >= 1.14 |
 | <a name="requirement_kubernetes"></a> [kubernetes](#requirement\_kubernetes) | >= 2.10 |
@@ -225,7 +224,7 @@ terraform destroy -var-file=terraform.tfvars
 | <a name="input_aws_region"></a> [aws\_region](#input\_aws\_region) | AWS Region | `string` | n/a | yes |
 | <a name="input_eks_cluster_id"></a> [eks\_cluster\_id](#input\_eks\_cluster\_id) | Name of the EKS cluster | `string` | n/a | yes |
 | <a name="input_enable_dashboards"></a> [enable\_dashboards](#input\_enable\_dashboards) | Enables or disables curated dashboards | `bool` | `true` | no |
-| <a name="input_grafana_api_key"></a> [grafana\_api\_key](#input\_grafana\_api\_key) | API key for authorizing the Grafana provider to make changes to Amazon Managed Grafana | `string` | n/a | yes |
+| <a name="input_grafana_api_key"></a> [grafana\_api\_key](#input\_grafana\_api\_key) | API key for external-secrets to create secrets for grafana-operator | `string` | n/a | yes |
 | <a name="input_managed_grafana_workspace_id"></a> [managed\_grafana\_workspace\_id](#input\_managed\_grafana\_workspace\_id) | Amazon Managed Grafana Workspace ID | `string` | n/a | yes |
 | <a name="input_managed_prometheus_workspace_id"></a> [managed\_prometheus\_workspace\_id](#input\_managed\_prometheus\_workspace\_id) | Amazon Managed Service for Prometheus Workspace ID | `string` | `""` | no |
 

examples/existing-cluster-java/main.tf

@@ -48,20 +48,10 @@ module "aws_observability_accelerator" {
 
   # reusing existing Amazon Managed Grafana workspace
   managed_grafana_workspace_id = var.managed_grafana_workspace_id
-  grafana_api_key              = var.grafana_api_key
 
   tags = local.tags
 }
 
-# https://www.terraform.io/language/modules/develop/providers
-# A module intended to be called by one or more other modules must not contain
-# any provider blocks.
-# This allows forcing dependency between base and workloads module
-provider "grafana" {
-  url  = module.aws_observability_accelerator.managed_grafana_workspace_endpoint
-  auth = var.grafana_api_key
-}
-
 module "eks_monitoring" {
   source = "../../modules/eks-monitoring"
   # source = "github.com/aws-observability/terraform-aws-observability-accelerator//modules/eks-monitoring?ref=v2.0.0"

examples/existing-cluster-java/variables.tf

@@ -20,7 +20,7 @@ variable "managed_grafana_workspace_id" {
 }
 
 variable "grafana_api_key" {
-  description = "API key for authorizing the Grafana provider to make changes to Amazon Managed Grafana"
+  description = "API key for external-secrets to create secrets for grafana-operator"
   type        = string
   sensitive   = true
 }

examples/existing-cluster-java/versions.tf

@@ -18,10 +18,6 @@ terraform {
       source  = "hashicorp/helm"
       version = ">= 2.4.1"
     }
-    grafana = {
-      source  = "grafana/grafana"
-      version = ">= 1.25.0"
-    }
   }
 
   # ##  Used for end-to-end testing on project; update to suit your needs