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Create a Terraform template

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Resource Orchestration Service (ROS) provides managed Terraform capabilities. You can create Terraform templates to define Alibaba Cloud, AWS, or Azure resources, configure resource parameters, and set dependencies between resources.

Use case

To define and manage resources across multiple cloud platforms such as Alibaba Cloud, AWS, and Azure from a single template, declare the target resources and their dependencies in a Terraform template. The following procedure demonstrates how to create a Terraform template that provisions Alibaba Cloud resources. The same workflow applies to AWS and Azure resources.

Background information

For more information about the structure of Terraform templates, see Structure of Terraform templates.

Procedure

  1. Log on to the ROS console.

  2. In the left-side navigation pane, choose Templates > My Templates.

  3. On the My Templates page, click Create Template.

  4. For Template Type, select Terraform.

  5. Write the Terraform template.

    The following example creates a vSwitch in a virtual private cloud (VPC) and shows how to write a Terraform template.

    • Create the modules/vpc/main.tf file and edit its content to create a VPC.

    • To the right of the directory, click + and then click Create Folder.image

    • In the Create Folder dialog box, enter modules to create a folder named modules in the directory.

    • Move the pointer over the modules folder, click + on the right, and then click Create Folder.

    • In the Create Folder dialog box, enter vpc to create a folder named vpc in the modules folder.

    • Move the pointer over the vpc folder, click + on the right, and then click Create File.

    • In the Create File dialog box, enter main.tf to create a main.tf file in the vpc folder.

    • Click main.tf and enter the following code in the editor on the right to create a VPC.

    resource "alicloud_vpc" "vpc" {
  name       = "tf_test"
  cidr_block = "172.16.0.0/12"
}
output "vpc_id" {
  value = "${alicloud_vpc.vpc.id}"
}

    image

    • Edit the main.tf file in the root directory to create a vSwitch in the VPC.

    • Click the main.tf file in the root directory.

    • In the editor on the right, enter the following code to create a vSwitch.

    module "my_vpc" {
  source      = "./modules/vpc"
}
resource "alicloud_vswitch" "vsw" {
  vpc_id            = "${module.my_vpc.vpc_id}"
  cidr_block        = "172.16.0.0/21"
  availability_zone = "cn-shanghai-b"
}
output "vsw_id" {
  value = "${alicloud_vswitch.vsw.id}"
}

    image

    Note

    The availability_zone parameter is set to cn-shanghai-b. Replace this value with an availability zone that is available in your region.

  6. In the lower-left corner of the Create Template page, choose Save Template > Save as My Template.

  7. In the Save as My Template dialog box, set Template Name, Template Description, Resource Group, and Tags.

  8. Click OK.

    The template is saved and appears on the My Templates page.

References

Previous：Create a Terraform stackNext：Structure of Terraform templates