Menggunakan modul dapat membantu mengurangi kesalahan ini. Misalnya, Anda dapat membuat modul untuk menjelaskan bagaimana semua bucketsitus web publik organisasi Anda akan dikonfigurasi, dan modul lain untuk bucket pribadi yang digunakan untuk aplikasilogging. Juga, jika konfigurasi untuk jenis sumber daya perlu diperbarui, menggunakan modul memungkinkan Anda membuat pembaruan itu di satu tempat dan menerapkannya ke semua kasus di mana Anda menggunakan modul itu.
Modul Terraform adalah kumpulan file konfigurasi Terraform dalam satu direktori. Bahkan konfigurasi sederhana yang terdiri dari satu direktori dengan satu atau lebih file .tf adalah sebuah modul. Ketika Anda menjalankan perintah Terraform langsung dari direktori seperti itu, itu dianggap sebagai modul root. Jadi dalam pengertian ini, setiap konfigurasi Terraform adalah bagian dari sebuah modul. Anda mungkin memiliki satu set sederhana file konfigurasi Terraform seperti ini:
variable "project_id" {
description = "The project ID to host the network in"
default = "FILL IN YOUR PROJECT ID HERE"
}
variable "network_name" {
description = "The name of the VPC network being created"
default = "example-vpc"
}
output "network_name" {
value = module.test-vpc-module.network_name
description = "The name of the VPC being created"
}
output "network_self_link" {
value = module.test-vpc-module.network_self_link
description = "The URI of the VPC being created"
}
output "project_id" {
value = module.test-vpc-module.project_id
description = "VPC project id"
}
output "subnets_names" {
value = module.test-vpc-module.subnets_names
description = "The names of the subnets being created"
}
output "subnets_ips" {
value = module.test-vpc-module.subnets_ips
description = "The IP and cidrs of the subnets being created"
}
output "subnets_regions" {
value = module.test-vpc-module.subnets_regions
description = "The region where subnets will be created"
}
output "subnets_private_access" {
value = module.test-vpc-module.subnets_private_access
description = "Whether the subnets will have access to Google API's without a public IP"
}
output "subnets_flow_logs" {
value = module.test-vpc-module.subnets_flow_logs
description = "Whether the subnets will have VPC flow logs enabled"
}
output "subnets_secondary_ranges" {
value = module.test-vpc-module.subnets_secondary_ranges
description = "The secondary ranges associated with these subnets"
}
output "route_names" {
value = module.test-vpc-module.route_names
description = "The routes associated with this VPC"
}
cd ~
touch main.tf
mkdir -p modules/gcs-static-website-bucket
Buat beberapa file
cd modules/gcs-static-website-bucket
touch website.tf
touch variables.tf
touch outputs.tf
Buat file README.md
# GCS static website bucket
This module provisions Cloud Storage buckets configured for static website hosting.
Buat File LICENSE
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
variable "name" {
description = "The name of the bucket."
type = string
}
variable "project_id" {
description = "The ID of the project to create the bucket in."
type = string
}
variable "location" {
description = "The location of the bucket."
type = string
}
variable "storage_class" {
description = "The Storage Class of the new bucket."
type = string
default = null
}
variable "labels" {
description = "A set of key/value label pairs to assign to the bucket."
type = map(string)
default = null
}
variable "bucket_policy_only" {
description = "Enables Bucket Policy Only access to a bucket."
type = bool
default = true
}
variable "versioning" {
description = "While set to true, versioning is fully enabled for this bucket."
type = bool
default = true
}
variable "force_destroy" {
description = "When deleting a bucket, this boolean option will delete all contained objects. If false, Terraform will fail to delete buckets which contain objects."
type = bool
default = true
}
variable "iam_members" {
description = "The list of IAM members to grant permissions on the bucket."
type = list(object({
role = string
member = string
}))
default = []
}
variable "retention_policy" {
description = "Configuration of the bucket's data retention policy for how long objects in the bucket should be retained."
type = object({
is_locked = bool
retention_period = number
})
default = null
}
variable "encryption" {
description = "A Cloud KMS key that will be used to encrypt objects inserted into this bucket"
type = object({
default_kms_key_name = string
})
default = null
}
variable "lifecycle_rules" {
description = "The bucket's Lifecycle Rules configuration."
type = list(object({
# Object with keys:
# - type - The type of the action of this Lifecycle Rule. Supported values: Delete and SetStorageClass.
# - storage_class - (Required if action type is SetStorageClass) The target Storage Class of objects affected by this Lifecycle Rule.
action = any
# Object with keys:
# - age - (Optional) Minimum age of an object in days to satisfy this condition.
# - created_before - (Optional) Creation date of an object in RFC 3339 (e.g. 2017-06-13) to satisfy this condition.
# - with_state - (Optional) Match to live and/or archived objects. Supported values include: "LIVE", "ARCHIVED", "ANY".
# - matches_storage_class - (Optional) Storage Class of objects to satisfy this condition. Supported values include: MULTI_REGIONAL, REGIONAL, NEARLINE, COLDLINE, STANDARD, DURABLE_REDUCED_AVAILABILITY.
# - num_newer_versions - (Optional) Relevant only for versioned objects. The number of newer versions of an object to satisfy this condition.
condition = any
}))
default = []
}
Tambahkan code berikut pada output.tf
output "bucket" {
description = "The created storage bucket"
value = google_storage_bucket.bucket
}
Kembali ke root directory dan tambahkan code berikut pada main.tf
cd ~
touch outputs.tf
tambahkan code
output "bucket-name" {
description = "Bucket names."
value = "module.gcs-static-website-bucket.bucket"
}
cd ~
touch variables.tf
tambahkan code
variable "project_id" {
description = "The ID of the project in which to provision resources."
type = string
default = "FILL IN YOUR PROJECT ID HERE"
}
variable "name" {
description = "Name of the buckets to create."
type = string
default = "FILL IN YOUR (UNIQUE) BUCKET NAME HERE"
}
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