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terraform-cloudgov

Terraform modules for working with cloud.gov commonly used by GSA-TTS/rails-template based apps

Module Examples

database

Creates an RDS database based on the rds_plan_name variable and outputs the instance_id for use elsewhere.

module "database" {
  source = "github.com/GSA-TTS/terraform-cloudgov//database?ref=v1.1.0"

  cf_org_name      = local.cf_org_name
  cf_space_name    = local.cf_space_name
  name             = "database_name"
  rds_plan_name    = "micro-psql"
  tags             = ["tag1", "tag2"]
  # See options at https://cloud.gov/docs/services/relational-database/#setting-optional-parameters-1
  json_params      = jsonencode(
    {
      "storage" : 10,
    }
  )
}

redis

Creates a Elasticache redis instance and outputs the instance_id for use elsewhere.

module "redis" {
  source = "github.com/GSA-TTS/terraform-cloudgov//redis?ref=v1.1.0"

  cf_org_name      = local.cf_org_name
  cf_space_name    = local.cf_space_name
  name             = "redis_name"
  redis_plan_name  = "redis-dev"
  tags             = ["tag1", "tag2"]
  # See options at https://cloud.gov/docs/services/aws-elasticache/#setting-optional-parameters
  json_params      = jsonencode(
    {
      "engineVersion" : "6.2",
    }
  )
}

s3

Creates an s3 bucket and outputs the bucket_id for use elsewhere.

module "s3" {
  source = "github.com/GSA-TTS/terraform-cloudgov//s3?ref=v1.1.0"

  cf_org_name      = local.cf_org_name
  cf_space_name    = local.cf_space_name
  name             = "${local.app_name}-s3-${local.env}"
  tags             = ["tag1", "tag2"]
  # See options at https://cloud.gov/docs/services/s3/#setting-optional-parameters
  json_params      = jsonencode(
    {
      "object_ownership" : "ObjectWriter",
    }
  )
}

domain

Connects a custom domain name or domain name with CDN to an already running application and outputs the instance_id (for the domain service) and the route_id (for the origin route) for use elsewhere.

Note that the domain must be created in cloud.gov by an OrgManager before this module is included.

cf create-domain CLOUD_GOV_ORG my-production-domain-name

module "domain" {
  source = "github.com/GSA-TTS/terraform-cloudgov//domain?ref=v1.1.0"

  cf_org_name      = local.cf_org_name
  cf_space_name    = local.cf_space_name
  app_name_or_id   = "app_name"
  cdn_plan_name    = "domain"
  domain_name      = "my-production-domain-name"
  host_name        = "my-production-host-name"
  tags             = ["tag1", "tag2"]
}

clamav

Creates an application and associated network routing to run ClamAV via API to scan user uploads and outputs the app_id, the route_id, and the endpoint for use elsewhere.

Notes:

  • The scanning app requires at least 3GB of memory, and your app_name must be deployed before this module is included.
  • Module >= v0.3.0 requires TAG_NAME being >= 20230228.
module "clamav" {
  source = "github.com/GSA-TTS/terraform-cloudgov//clamav?ref=v1.1.0"

  cf_org_name    = local.cf_org_name
  cf_space_name  = local.cf_space_name
  app_name_or_id = "app_name"
  name           = "my_clamav_name"
  clamav_image   = "ghcr.io/gsa-tts/clamav-rest/clamav:TAG_NAME"
  max_file_size  = "30M"
  instances      = 2
  proxy_server   = local.proxy_server # https proxy to reach database.clamav.net:443, if necessary
  proxy_port     = local.proxy_port
  proxy_username = local.proxy_username
  proxy_password = local.proxy_password
}

cg_space

Creates a new cloud.gov space, such as when creating an egress space, and outputs the space_id for use elsewhere.

managers, developers, and deployers are all optional, but you probably want to set at least one of them, depending on your use case.

  • managers are granted the Space Manager role
  • developers are granted the Space Developer role
  • deployers are granted both manager and developer roles
module "egress_space" {
  source = "github.com/GSA-TTS/terraform-cloudgov//cg_space?ref=v1.1.0"

  cf_org_name   = local.cf_org_name
  cf_space_name = "${local.cf_space_name}-egress"
  managers = [
    "[email protected]"
  ]
  developers = [
    "[email protected]"
  ]
  deployers = [
    var.cf_user
  ]
}

egress_proxy

Creates and configures an instance of cg-egress-proxy to proxy traffic from your apps.

Prerequities:

  • existing client_space with already deployed apps
  • existing public-egress space to deploy the proxy into
module "egress_proxy" {
  source = "github.com/GSA-TTS/terraform-cloudgov//egress_proxy?ref=v1.1.0"

  cf_org_name   = local.cf_org_name
  cf_space_name = "${local.cf_space_name}-egress"
  client_space  = local.cf_space_name
  name          = "egress-proxy"
  allowlist = {
    "source_app_name" = ["host.com:443", "otherhost.com:443"]
  }
  # see egress_proxy/variables.tf for full list of optional arguments
}

Testing

Warning

Tests provision resources in the real world when not using mock_provider! Take care that CF_USER/CF_PASSWORD are set to an account in a suitable non-production space. If other providers, such as the AWS provider, are used, ensure the same care is taken with their credentials in your shell before running terraform test.

Terraform tests are in progress of being written. To run for any module with a tests directory:

  1. Set CF_USER and CF_PASSWORD env variables with SpaceDeployer credentials that can access the space(s) being used for tests
  2. cd to module root. Example: cd s3
  3. Run terraform init
  4. Run terraform test

When updating code, try to cover every input and output variable with at least one test to verify it is connected properly.