Restore RDS instance

Author: lsy1968

quickstarts/RDS/201-use-case-restore-rds-instance/README.md

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+## Introduction
+
+<!-- DOCS_DESCRIPTION_CN -->
+本示例用于在阿里云上恢复RDS PostgreSQL实例，涉及到备份的创建以及按时间点和备份集恢复RDS PostgreSQL实例。
+详情可查看[通过 Terraform 恢复 RDS PostgreSQL 实例](http://help.aliyun.com/document_detail/456035.htm)。
+<!-- DOCS_DESCRIPTION_CN -->
+
+<!-- DOCS_DESCRIPTION_EN -->
+This example is used to restore RDS PostgreSQL instance on Alibaba Cloud, which involves the creation of backup and restoration by backup and time.
+More details in [Restore RDS instance data](http://help.aliyun.com/document_detail/456035.htm).
+<!-- DOCS_DESCRIPTION_EN -->
+
+<!-- BEGIN_TF_DOCS -->
+## Providers
+
+| Name | Version |
+|------|---------|
+| <a name="provider_alicloud"></a> [alicloud](#provider\_alicloud) | n/a |
+
+## Modules
+
+No modules.
+
+## Resources
+
+| Name | Type |
+|------|------|
+| [alicloud_db_instance.instance](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/db_instance) | resource |
+| [alicloud_rds_backup.instance](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/rds_backup) | resource |
+| [alicloud_rds_clone_db_instance.clone_id](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/rds_clone_db_instance) | resource |
+| [alicloud_rds_clone_db_instance.clone_time](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/rds_clone_db_instance) | resource |
+| [alicloud_vpc.main](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/vpc) | resource |
+| [alicloud_vswitch.main](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/resources/vswitch) | resource |
+| [alicloud_rds_backups.example](https://registry.terraform.io/providers/aliyun/alicloud/latest/docs/data-sources/rds_backups) | data source |
+
+## Inputs
+
+| Name | Description | Type | Default | Required |
+|------|-------------|------|---------|:--------:|
+| <a name="input_instance_type"></a> [instance\_type](#input\_instance\_type) | n/a | `string` | `"pg.n2.2c.2m"` | no |
+| <a name="input_region"></a> [region](#input\_region) | n/a | `string` | `"cn-heyuan"` | no |
+| <a name="input_zone_id"></a> [zone\_id](#input\_zone\_id) | n/a | `string` | `"cn-heyuan-b"` | no |
+<!-- END_TF_DOCS -->
+
+## Documentation
+<!-- docs-link --> 
+
+The template is based on Aliyun document: [Restore RDS instance](http://help.aliyun.com/document_detail/456035.htm) 
+
+<!-- docs-link --> 

quickstarts/RDS/201-use-case-restore-rds-instance/main.tf

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+variable "region" {
+  default = "cn-heyuan"
+}
+
+variable "zone_id" {
+  default = "cn-heyuan-b"
+}
+
+variable "instance_type" {
+  default = "pg.n2.2c.2m"
+}
+
+provider "alicloud" {
+  region = var.region
+}
+
+# 创建VPC
+resource "alicloud_vpc" "main" {
+  vpc_name   = "alicloud"
+  cidr_block = "172.16.0.0/16"
+}
+
+# 创建交换机
+resource "alicloud_vswitch" "main" {
+  vpc_id     = alicloud_vpc.main.id
+  cidr_block = "172.16.192.0/20"
+  zone_id    = var.zone_id
+}
+
+# 创建RDS PostgreSQL实例
+resource "alicloud_db_instance" "instance" {
+  engine               = "PostgreSQL"
+  engine_version       = "13.0"
+  instance_type        = var.instance_type
+  instance_storage     = "30"
+  instance_charge_type = "Postpaid"
+  vswitch_id           = alicloud_vswitch.main.id
+}
+
+# 创建备份
+resource "alicloud_rds_backup" "instance" {
+  db_instance_id    = alicloud_db_instance.instance.id
+  remove_from_state = true
+}
+
+# 查询备份
+data "alicloud_rds_backups" "example" {
+  db_instance_id = alicloud_db_instance.instance.id
+  depends_on     = [alicloud_rds_backup.instance]
+}
+
+# 按时间点恢复实例
+resource "alicloud_rds_clone_db_instance" "clone_time" {
+  source_db_instance_id    = alicloud_db_instance.instance.id
+  db_instance_description  = "terraform-test-clone"
+  db_instance_storage_type = "cloud_essd"
+  payment_type             = "PayAsYouGo"
+  # 模拟获取查询结果中backup_end_time的参数取值。
+  restore_time        = data.alicloud_rds_backups.example.backups.0.backup_end_time
+  db_instance_storage = "50"
+}
+
+# 按备份集恢复实例
+resource "alicloud_rds_clone_db_instance" "clone_id" {
+  db_instance_description  = "terraform-test-clone-1"
+  source_db_instance_id    = alicloud_db_instance.instance.id
+  db_instance_storage_type = "cloud_essd"
+  payment_type             = "PayAsYouGo"
+  # 模拟获取查询结果中backup_id的参数取值。
+  backup_id           = data.alicloud_rds_backups.example.backups.0.backup_id
+  db_instance_storage = "50"
+}

quickstarts/RDS/201-use-case-restore-rds-instance/provider.tf

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+terraform {
+  required_providers {
+    alicloud = {
+      source = "aliyun/alicloud"
+    }
+  }
+}