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terraform {
required_providers {
vultr = {
source = "vultr/vultr"
version = "~> 2.1.2"
}
}
required_version = ">= 0.13"
}
# Input variables
variable "vultr_api_key" {
type = string
description = "Vultr API key."
}
variable "vps_tld" {
type = string
description = "Root Top-Level Domain. Subdomains will be derived from it."
}
variable "vps_hostname" {
type = string
description = "Human name of the host. This is a pet name, not cattle name :)"
}
variable "vps_dkim_public_key" {
type = string
description = "Public key for the DNS TXT DKIM record."
}
variable "vps_dkim_selector" {
type = string
description = "The DKIM selector that prefixes the domain in the TXT record."
}
# Vultr
provider "vultr" {
api_key = var.vultr_api_key
}
# Instance
resource "vultr_instance" "vps_server" {
enable_ipv6 = true
backups = "enabled"
hostname = var.vps_hostname
activation_email = true
label = var.vps_hostname
region = "cdg"
plan = "vc2-1c-1gb"
# $ curl -H "Authorization: Bearer $TF_VAR_vultr_api_key" https://api.vultr.com/v2/snapshots | jq
snapshot_id = "8e6aaab6-7973-48a0-aeb5-cb99ab1ff43d"
}
output "vps_public_ipv4" {
value = vultr_instance.vps_server.main_ip
}
output "vps_public_ipv6" {
value = vultr_instance.vps_server.v6_main_ip
}
# DNS and IP configuration
locals {
mail_domain = "mail.${var.vps_tld}"
}
resource "vultr_dns_domain" "vps_tld" {
# The CNAME record is already generated by Vultr
domain = var.vps_tld
ip = vultr_instance.vps_server.main_ip
}
resource "vultr_dns_record" "vps_mail_a_record" {
domain = vultr_dns_domain.vps_tld.id
name = "mail"
data = vultr_instance.vps_server.main_ip
type = "A"
}
resource "vultr_reverse_ipv4" "vps_mail_reverse_ipv4" {
instance_id = vultr_instance.vps_server.id
ip = vultr_instance.vps_server.main_ip
reverse = local.mail_domain
}
resource "vultr_dns_record" "vps_mail_aaaa_record" {
domain = vultr_dns_domain.vps_tld.id
name = "mail"
data = vultr_instance.vps_server.v6_main_ip
type = "AAAA"
}
resource "vultr_reverse_ipv6" "vps_mail_reverse_ipv6" {
instance_id = vultr_instance.vps_server.id
ip = vultr_instance.vps_server.v6_main_ip
reverse = local.mail_domain
}
resource "vultr_dns_record" "vps_mx_record" {
domain = vultr_dns_domain.vps_tld.id
name = ""
data = local.mail_domain
type = "MX"
}
resource "vultr_dns_record" "vps_spf_txt" {
domain = vultr_dns_domain.vps_tld.id
name = ""
data = "\"v=spf1 mx -all\""
type = "TXT"
}
resource "vultr_dns_record" "vps_dkim_txt" {
domain = vultr_dns_domain.vps_tld.id
name = "${var.vps_dkim_selector}._domainkey"
data = "\"v=DKIM1;k=rsa;p=${var.vps_dkim_public_key}\""
type = "TXT"
}
resource "vultr_dns_record" "vps_dmarc_txt" {
domain = vultr_dns_domain.vps_tld.id
name = "_dmarc"
data = "\"v=DMARC1;p=none;pct=100;rua=mailto:postmaster@${var.vps_tld};\""
type = "TXT"
}
# I think this DNS is configured by default
# resource "vultr_dns_record" "vps_cname_start_alias" {
# domain = vultr_dns_domain.vps_tld.id
# name = "*"
# data = var.vps_tld
# type = "CNAME"
# }
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