数字海洋托管数据库防火墙的 Terraform

Terraform for Digital Ocean Managed Database Firewall

我一直在尝试为我拥有的托管数字海洋数据库动态创建 Terraform 代码。我正在努力实现我有一些 FW 条目列表,例如:

locals {
  ####################################################################################
  ## DO object ids (the different ID's for the Postgres databases in Digital Ocean
  ####################################################################################
  id_postgres_application_dev = "12345"
  id_postgres_application_stg = "23456"
  id_postgres_application_prd = "34567"

  # Map to fw for Postgres
  pg-application_id = {
    "dev" = id_postgres_application_dev
    "stg" = id_postgres_application_stg
    "prd" = id_postgres_application_prd
  }

  ####################################################################################
  ## Outside IP addresses
  ####################################################################################
  fw_ip_peter = "4.100.123.140"
  fw_ip_sunshine = "152.120.106.102"

 ####################################################################################
  ## Postgres Application
  ####################################################################################
  # Map to fw for Postgres
  pg-application_fw_rules_ip = {
    "dev" = [
      local.fw_ip_peter,
      local.fw_ip_sunshine]
    "stg" = [
      local.fw_ip_peter]
    "prd" = [
      local.fw_ip_peter]
  }

  long_key = {
    type = "string"
    default = <<EOF
    rule = {
      type = "KEY"
      value = "VALUE"
    }
    EOF
  }

  fw_rules = toset(lookup(local.pg-application_fw_rules_ip, var.environment))
}

现在我想要实现的是动态生成 FW 规则条目(这些在 Digital Ocean 文档中有描述:https://registry.terraform.io/providers/digitalocean/digitalocean/latest/docs/resources/database_firewall

因此开发环境的结果类似于:


id_postgres_application = lookup(local.pg-application_id, var.environment)

resource "digitalocean_database_firewall" "example-fw" {
  cluster_id = id_postgres_application

  rule {
    type  = "ip_addr"
    value = "4.100.123.140" // Peter
  }

  rule {
    type  = "ip_addr"
    value = "152.120.106.102" // Sunshine (for dev only)
  }
}

所以问题出在规则部分 - 在 fw_rules 变量中重复每个条目。

有人对如何执行此操作有具体建议吗?我尝试了很多不同的解决方案,我认为我的基本问题是了解应用哪种方法?

通常,您会为此使用 dynamic blocks。因此,您的代码可能如下所示:

resource "digitalocean_database_firewall" "example-fw" {

  cluster_id = id_postgres_application

  dynamic "rule" {

    for_each = local.application_fw_rules_ip[var.environment]

    content {
        type  = "ip_addr"
        value = rule.key
    }

  }
}

将代码作为示例,因为可能需要针对您的设置进行一些特定的进一步调整。