Terraform fck-nat

Introduction

A Terraform module for deploying NAT Instances using fck-nat. The (f)easible (c)ost (k)onfigurable NAT! The following is a list of features available with this module:

• High-availability mode achieved through a floating internal ENI automatically attached to instances being started by an ASG
• Optional consistent static IP via EIP re-attachment to the internet facing ENI
• Cloudwatch metrics reported similar to those available with the managed NAT Gateway
• Use of spot instances instead of on-demand for reduced costs

Example

module "fck-nat" {
  source = "git::https://github.com/RaJiska/terraform-aws-fck-nat.git"

  name                 = "my-fck-nat"
  vpc_id               = "vpc-abc1234"
  subnet_id            = "subnet-abc1234"
  # ha_mode              = true                 # Enables high-availability mode
  # eip_allocation_ids   = ["eipalloc-abc1234"] # Allocation ID of an existing EIP
  # use_cloudwatch_agent = true                 # Enables Cloudwatch agent and have metrics reported

  update_route_tables = true
  route_tables_ids = {
    "your-rtb-name-A" = "rtb-abc1234Foo"
    "your-rtb-name-B" = "rtb-abc1234Bar"
  }
}

Requirements

Providers

Resources

Inputs

object({
    namespace           = optional(string, "fck-nat"),
    collection_interval = optional(number, 60),
    endpoint_override   = optional(string, "")
  })

{
  "collection_interval": 60,
  "endpoint_override": "",
  "namespace": "fck-nat"
}

object({
    ipv4 = optional(list(string), [])
    ipv6 = optional(list(string), [])
  })

{
  "ipv4": [],
  "ipv6": []
}

Outputs