Setup a domain on CloudFlare + Google MX using Terraform

cloudflare.tf

variable "email" {}
variable "token" {}
variable "domain" {}

provider "cloudflare" {
  email = "${var.email}"
  token = "${var.token}"
}

# Setup the root domain
resource "cloudflare_record" "main" {
  domain  = "${var.domain}"
  name    = "@"
  value   = "192.168.0.11"
  type    = "A"
  proxied = true
}

# Setup the www CNAME for your domain
resource "cloudflare_record" "main-www" {
  domain  = "${var.domain}"
  name    = "www"
  value   = "${var.domain}"
  type    = "CNAME"
  proxied = true
}

# Setting up Google MX

resource "cloudflare_record" "google-mx-record-aspmx" {
  domain   = "${var.domain}"
  name     = "@"
  value    = "aspmx.l.google.com"
  type     = "MX"
  priority = 1
}

resource "cloudflare_record" "google-mx-record-alt1" {
  domain   = "${var.domain}"
  name     = "@"
  value    = "alt1.aspmx.l.google.com"
  type     = "MX"
  priority = 5
}

resource "cloudflare_record" "google-mx-record-alt2" {
  domain   = "${var.domain}"
  name     = "@"
  value    = "alt2.aspmx.l.google.com"
  type     = "MX"
  priority = 5
}

resource "cloudflare_record" "google-mx-record-alt3" {
  domain   = "${var.domain}"
  name     = "@"
  value    = "alt3.aspmx.l.google.com"
  type     = "MX"
  priority = 10
}

resource "cloudflare_record" "google-mx-record-alt4" {
  domain   = "${var.domain}"
  name     = "@"
  value    = "alt4.aspmx.l.google.com"
  type     = "MX"
  priority = 10
}

execute.sh

# email  = cloudflare email address
# token  = cloudflare api token from profile page
# domain = the domain you're wanting to update on cloudflare
terraform apply -var [email protected] -var token=111111111111111111111 -var domain=myawesomedomain.com

Google MX interpolated using count

# Mail Exchange Records: Gsuite / Gmail
resource "cloudflare_record" "mx-gsuite" {
  count    = 5
  domain   = "${var.domain}"
  name     = "@"
  type     = "MX"
  value    = "${count.index == 0 ? "" : "alt${count.index + 1}."}aspmx.l.google.com"
  priority = "${abs(element(list("1", "5", "5", "10", "10"), count.index))}"
}

Nice!