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Terraform 中的 random_pet：错误：循环：

tag-icon • tag-icon linux automation terraform
Terraform 中的 random_pet：错误：循环：

我正在尝试为几台服务器生成随机主机名。但是，在运行 terraform apply 时，我收到一条错误消息“错误：循环：random_pet.swm01_managers，hcloud_server.swm01_managers”

这就是我想做的事情：

variable "swm01_managers_count" {
  default = 5
}

# ─── CREATE RANDOM SERVER HOSTNAMES ─────────────────────────────────────────────

resource "random_pet" "swm01_managers" {
  count = "${var.swm01_managers_count}"
  keepers = {
    id = "${hcloud_server.swm01_managers[count.index].id}"
  }
}

# ─── CREATE DOCKER SWARM MANAGER NODES ──────────────────────────────────────────

resource "hcloud_server" "swm01_managers" {
  count = "${var.swm01_managers_count}"

  name = "${random_pet.swm01_managers[count.index]}"
  image = "ubuntu-18.04"
  server_type = "cx11"
  ssh_keys = "${var.ssh_keys}"
  labels = {
    "env" = "prd"
    "docker_swarm_role" = "manager"
  }

}

这是我收到的错误：

terraform apply --var-file=prd/prd.tfvars

Error: Cycle: random_pet.swm01_managers, hcloud_server.swm01_managers

答案1

variable "swm01_managers_count" {
  default = 5
}

# ─── CREATE DOCKER SWARM MANAGER NODES ──────────────────────────────────────────

resource "hcloud_server" "swm01_managers" {
  count = var.swm01_managers_count

  name        = random_pet.swm01_managers[count.index].id
  image       = "ubuntu-18.04"
  server_type = "cx11"
  ssh_keys    = var.ssh_keys
  labels = {
    "env"              = "prd"
    "docker_swarm_role" = "manager"
  }
}

# ─── CREATE RANDOM SERVER HOSTNAMES ─────────────────────────────────────────────

resource "random_pet" "swm01_managers" {
  count = var.swm01_managers_count
  keepers = {
    id = hcloud_server.swm01_managers[count.index].id
  }

  # Add the depends_on attribute to explicitly set the dependency on hcloud_server.swm01_managers
  depends_on = [hcloud_server.swm01_managers]
}

通过将depends_on = [hcloud_server.swm01_managers]添加到random_pet资源，您告知Terraform必须在创建hcloud_server.swm01_managers资源后创建random_pet资源。这将解决循环依赖问题，并且Terraform应该能够成功应用您的配置。

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