Merge pull request #1 from fyde/big-bang

Add AWS ASG module

.gitignore

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+.terraform
+terraform.tfstate
+*.tfstate*
+terraform.tfvars

.pre-commit-config.yaml

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+---
+repos:
+- repo: git://github.com/antonbabenko/pre-commit-terraform
+  rev: v1.31.0
+  hooks:
+    - id: terraform_fmt
+    - id: terraform_validate
+    - id: terraform_docs_replace
+    - id: terraform_tflint
+    - id: terraform_tfsec

CHANGELOG.md

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+# Change Log
+
+## v1.0.0
+
+- [aws-asg] Initial release

README.md

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-# fyde-terraform
-Terraform modules for Fyde products
+# Fyde - Terraform modules
+
+![Fyde](https://raw.githubusercontent.com/fyde/docs/master/imgs/fyde-logo.png)
+
+Website: <https://fyde.com>
+
+Documentation: <https://fyde.github.io/docs>
+
+## Fyde Access Proxy
+
+### AWS - Auto Scaling Group
+
+Usage example:
+
+```yaml
+module "fyde-access-proxy" {
+  source = "git::git@github.com:fyde/terraform-modules.git//modules/aws-asg?ref=v1.0.0"
+
+  # Fyde Access Proxy
+  fyde_access_proxy_public_port = 443
+  fyde_access_proxy_token       = "replace_with_token"
+
+  # AWS
+  aws_region = "us-east-1"
+
+  # Network Load Balancing
+  nlb_subnets = ["subnet-public-1", "subnet-public-2", "subnet-public-3"]
+
+  # Auto Scaling Group
+  asg_desired_capacity    = 3
+  asg_min_size            = 3
+  asg_max_size            = 3
+  asg_subnets             = ["subnet-private-1", "subnet-private-2", "subnet-private-3"]
+
+  # Launch Configuration
+  launch_cfg_instance_type = "t2.small"
+  launch_cfg_key_pair_name = "key_pair_name"
+}
+
+output "Network_Load_Balancer_DNS_Name" {
+  value       = module.fyde-access-proxy.Network_Load_Balancer_DNS_Name
+}
+
+output "Security_Group_for_Resources" {
+  value       = module.fyde-access-proxy.Security_Group_for_Resources
+}
+```
+
+Check all the available variables [here](modules/aws-asg/README.md)
+
+## Misc
+
+- This repository has [pre-commit](https://github.com/antonbabenko/pre-commit-terraform) configured
+  - Test all the pre-commit hooks with `pre-commit run -a`
+- Test branch with `git::git@github.com:fyde/terraform-modules.git//modules/aws-asg?ref=<branch-name>`

modules/aws-asg/README.md

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+## Requirements
+
+| Name | Version |
+|------|---------|
+| terraform | ~> 0.12 |
+| aws | ~> 2 |
+| template | ~> 2 |
+
+## Providers
+
+| Name | Version |
+|------|---------|
+| aws | ~> 2 |
+| null | n/a |
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| asg\_desired\_capacity | The number of Amazon EC2 instances that should be running in the auto scaling group | `number` | `3` | no |
+| asg\_max\_size | The minimum size of the auto scaling group | `number` | `3` | no |
+| asg\_min\_size | The maximum size of the auto scaling group | `number` | `3` | no |
+| asg\_notification\_arn\_topic | Optional ARN topic to get Auto Scaling Group events | `string` | `""` | no |
+| asg\_subnets | A list of subnet IDs to launch resources in. Use Private Subnets with NAT Gateway configured or Public Subnets | `list` | n/a | yes |
+| aws\_region | AWS Region | `string` | n/a | yes |
+| fyde\_access\_proxy\_public\_port | Public port for this proxy (must match the value configured in the console for this proxy) | `number` | `443` | no |
+| fyde\_access\_proxy\_token | Fyde Access Proxy Token for this proxy (obtained from the console after proxy creation) | `any` | n/a | yes |
+| launch\_cfg\_associate\_public\_ip\_address | Associate a public ip address with an instance in a VPC | `bool` | `false` | no |
+| launch\_cfg\_instance\_type | The type of instance to use (t2.micro, t2.small, t2.medium, etc) | `string` | `"t2.small"` | no |
+| launch\_cfg\_key\_pair\_name | The name of the key pair to use | `string` | n/a | yes |
+| module\_version | Terraform module version | `string` | `"v1.0.0"` | no |
+| nlb\_enable\_cross\_zone\_load\_balancing | Configure cross zone load balancing for the NLB | `bool` | `false` | no |
+| nlb\_subnets | A list of public subnet IDs to attach to the LB. Use Public Subnets only | `list(string)` | n/a | yes |
+
+## Outputs
+
+| Name | Description |
+|------|-------------|
+| Network\_Load\_Balancer\_DNS\_Name | Update the Fyde Access Proxy in the Console with this DNS name |
+| Security\_Group\_for\_Resources | Use this group to allow Fyde Access Proxy access to internal resources |

modules/aws-asg/data.tf

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+#
+# Data
+#
+
+data "aws_caller_identity" "current" {}
+
+data "aws_subnet" "vpc_from_first_subnet" {
+  id = var.nlb_subnets[0]
+}

modules/aws-asg/locals.tf

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+#
+# Locals
+#
+
+locals {
+
+  common_tags_map = {
+    application      = "fyde-access-proxy"
+    "module_version" = var.module_version
+    "disclaimer"     = "Created by terraform"
+  }
+
+  common_tags_asg = null_resource.tags_as_list_of_maps.*.triggers
+}
+
+resource "null_resource" "tags_as_list_of_maps" {
+  count = length(keys(local.common_tags_map))
+
+  triggers = {
+    "key"                 = keys(local.common_tags_map)[count.index]
+    "value"               = values(local.common_tags_map)[count.index]
+    "propagate_at_launch" = true
+  }
+}