Question

是否存在Terraform创建多个Aurora数据库集群的方法？我试图使cluster_name成为列表，但看起来“ cluster_identifier”资源需要一个String而不是一个字符串列表。我可以为一个集群创建多个实例，但是看不到在Terraform中创建多个数据库集群的方法。

# The Aurora cluster (which contains database instances created below).
  resource "aws_rds_cluster" "aurora_cluster" {
  engine                          = var.rds_engine
  engine_version                  = var.rds_engine_version
  cluster_identifier              = var.rds_cluster_name
  master_username                 = local.aurora_creds.username
  master_password                 = local.aurora_creds.password
  db_subnet_group_name            = var.subnet_group_name
  iam_roles                       = var.rds_iam_roles
  vpc_security_group_ids          = var.security_groups
   lifecycle {
    create_before_destroy = true
}

}

resource "aws_rds_cluster_instance" "aurora_instance" {
engine                  = var.rds_engine
engine_version          = var.rds_engine_version
count                   = var.instance_count
identifier              = "${var.rds_cluster_name}-${count.index}"
cluster_identifier      = var.rds_cluster_name
instance_class          = var.rds_instance_class
db_subnet_group_name    = var.subnet_group_name
availability_zone       = lookup(element(var.subnet_zones, count.index), "zone")
publicly_accessible     = false
lifecycle {
    create_before_destroy = true
}

}

Answer 1

有几种方法可以在Terraform中配置x的资源量。

您可以在资源本身中使用count属性。

locals {
  instance_count = 2
}

resource "aws_rds_cluster_instance" "aurora_instance" {
  count                   = local.instance_count
  engine                  = var.rds_engine
  engine_version          = var.rds_engine_version
  identifier              = "${var.rds_cluster_name}-${count.index}"
  cluster_identifier      = var.rds_cluster_name
  instance_class          = var.rds_instance_class
  db_subnet_group_name    = var.subnet_group_name
  availability_zone       = lookup(element(var.subnet_zones, count.index), "zone")
  publicly_accessible     = false
  lifecycle {
    create_before_destroy = true
  }
}

或者您可以使用for_each属性。

locals {
  zones = ["us-west-2a", "us-west-2b"]
}

resource "aws_rds_cluster_instance" "aurora_instance" {
  for_each                = toset(local.zones)
  engine                  = var.rds_engine
  engine_version          = var.rds_engine_version
  identifier              = "${var.rds_cluster_name}-${each.key}"
  cluster_identifier      = var.rds_cluster_name
  instance_class          = var.rds_instance_class
  db_subnet_group_name    = var.subnet_group_name
  availability_zone       = each.key
  publicly_accessible     = false
  lifecycle {
    create_before_destroy = true
  }
}

使用Terraform创建多个Aurora集群

1 个答案: