如何使用 Terraform 仅为 prod 创建多节点 redshift 集群

Question

我有 2 个 redshift 集群 prod 和 dev ，我正在使用相同的 terraform 模块。 我如何才能有 2 个节点仅用于生产集群。请让我知道我应该使用什么插值语法

variable "node_type" {
  default = "dc1.large"
}

resource "aws_redshift_cluster" "****" {
  cluster_identifier           = "abc-${var.env}"
  node_type                    = "${var.node_type}"
  cluster_type                 = "single-node" ==> multi node
  number_of_nodes              = 2 ==> only for prod

Answer 1

使用map type：

variable "node_type" {
  default = "dc1.large"
}

variable "env" {
  default = "development"
}

variable "redshift_cluster_type" {
    type = "map"

  default = {
    development = "single-node"
    production  = "multi-node"
  }
}

variable "redshift_node" {
    type = "map"

  default = {
    development = "1"
    production  = "2"
  }
}    

resource "aws_redshift_cluster" "****" {
  cluster_identifier           = "abc-${var.env}"
  node_type                    = "${var.node_type}"
  cluster_type                 = "${var.redshift_cluster_type[var.env]}"
  number_of_nodes              = "${var.redshift_node[var.env]}"
}

有时我很懒，就这样做

resource "aws_redshift_cluster" "****" {
  cluster_identifier           = "abc-${var.env}"
  node_type                    = "${var.node_type}"
  cluster_type                 = "${var.env == "production" ? "multi_node" : "single_node" }"
  number_of_nodes              = "${var.env == "production" ? 2 : 1 }"
}