add modules 5-9

07-managing-multiple-environments/file-structure/README.md

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+- Note about using separate AWS projects (avoids prefix issues, improved IAM control)
+  - Cover this in advanced section?
+  
+```
+provider “aws” {
+  region = “us-east-1”
+  assume_role {
+    role_arn = “arn:aws:iam::123456789012:role/iac”
+  }
+}
+```

07-managing-multiple-environments/file-structure/production/main.tf

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+terraform {
+  # Assumes s3 bucket and dynamo DB table already set up
+  # See /code/03-basics/aws-backend
+  backend "s3" {
+    bucket         = "devops-directive-tf-state"
+    key            = "07-managing-multiple-environments/production/terraform.tfstate"
+    region         = "us-east-1"
+    dynamodb_table = "terraform-state-locking"
+    encrypt        = true
+  }
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 3.0"
+    }
+  }
+}
+
+provider "aws" {
+  region = "us-east-1"
+}
+
+variable "db_pass" {
+  description = "password for database"
+  type        = string
+  sensitive   = true
+}
+
+locals {
+  environment_name = "production"
+}
+
+module "web_app" {
+  source = "../../../06-organization-and-modules/web-app-module"
+
+  # Input Variables
+  bucket_name = "devops-directive-web-app-data-${local.environment_name}"
+  domain      = "mysuperawesomesite.com"
+  environment_name = local.environment_name
+  instance_type = "t2.small"
+  create_dns_zone = true
+  db_name     = "${local.environment_name}mydb"
+  db_user     = "foo"
+  db_pass     = var.db_pass
+}

07-managing-multiple-environments/file-structure/staging/main.tf

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+terraform {
+  # Assumes s3 bucket and dynamo DB table already set up
+  # See /code/03-basics/aws-backend
+  backend "s3" {
+    bucket         = "devops-directive-tf-state"
+    key            = "07-managing-multiple-environments/staging/terraform.tfstate"
+    region         = "us-east-1"
+    dynamodb_table = "terraform-state-locking"
+    encrypt        = true
+  }
+
+  required_providers {
+    aws = {
+      source  = "hashicorp/aws"
+      version = "~> 3.0"
+    }
+  }
+}
+
+provider "aws" {
+  region = "us-east-1"
+}
+
+variable "db_pass" {
+  description = "password for database"
+  type        = string
+  sensitive   = true
+}
+
+locals {
+  environment_name = "staging"
+}
+
+module "web_app" {
+  source = "../../../06-organization-and-modules/web-app-module"
+
+  # Input Variables
+  bucket_name = "devops-directive-web-app-data-${local.environment_name}"
+  domain      = "mysuperawesomesite.com"
+  environment_name = local.environment_name
+  instance_type = "t2.micro"
+  create_dns_zone = false
+  db_name     = "${local.environment_name}mydb" 
+  db_user     = "foo"
+  db_pass     = var.db_pass
+}