AS3 Integration with Terraform

You can use Terraform with AS3 for managing application-specific configurations on a BIG-IP system. AS3 uses a declarative model, meaning you provide a JSON declaration rather than a set of imperative commands. The declaration represents the configuration which AS3 is responsible for creating on a BIG-IP system. Terraform provides resources to configure AS3 declarative JSON on BIG-IP.

Prerequisites

To use AS3 Extensions with Terraform, ensure you meet the following requirements:

  • The BIG-IP system is running software version 12.1.x or newer
  • The BIG-IP system has AS3 Extension version 3.10 or newer installed
  • You have a BIG-IP system user account with the Administrator role

Example Usage

Example usage for json file
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 resource "bigip_as3"  "as3-example1" {
     as3_json = "${file("example1.json")}"
 }
Example usage for json file with tenant filter
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 resource "bigip_as3"  "as3-example1" {
     as3_json = "${file("example2.json")}"
     tenant_filter = "Sample_03"
 }

Argument Reference

  • as3_json - (Required) Path/Filename of Declarative AS3 JSON which is a json file used with builtin file function
  • tenant_filter - (Optional) If there are muntiple tenants in a json this attribute helps the user to set a particular tenant to which he want to reflect the changes. Other tenants will neither be created nor be modified
  • as3_example1.json - Example AS3 Declarative JSON file with single tenant
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 {
     "class": "AS3",
     "action": "deploy",
     "persist": true,
     "declaration": {
         "class": "ADC",
         "schemaVersion": "3.0.0",
         "id": "example-declaration-01",
         "label": "Sample 1",
         "remark": "Simple HTTP application with round robin pool",
         "Sample_01": {
             "class": "Tenant",
             "defaultRouteDomain": 0,
             "Application_1": {
                 "class": "Application",
                 "template": "http",
             "serviceMain": {
                 "class": "Service_HTTP",
                 "virtualAddresses": [
                     "10.0.2.10"
                 ],
                 "pool": "web_pool"
                 },
                 "web_pool": {
                     "class": "Pool",
                     "monitors": [
                         "http"
                     ],
                     "members": [
                         {
                             "servicePort": 80,
                             "serverAddresses": [
                                 "192.0.1.100",
                                 "192.0.1.110"
                             ]
                         }
                     ]
                 }
             }
         }
     }
 }
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 {
     "class": "AS3",
     "action": "deploy",
     "persist": true,
     "declaration": {
         "class": "ADC",
         "schemaVersion": "3.0.0",
         "id": "example-declaration-01",
         "label": "Sample 1",
         "remark": "Simple HTTP application with round robin pool",
         "Sample_02": {
             "class": "Tenant",
             "defaultRouteDomain": 0,
             "Application_2": {
                 "class": "Application",
                 "template": "http",
             "serviceMain": {
                 "class": "Service_HTTP",
                 "virtualAddresses": [
                     "10.2.2.10"
                 ],
                 "pool": "web_pool2"
                 },
                 "web_pool2": {
                     "class": "Pool",
                     "monitors": [
                         "http"
                     ],
                     "members": [
                         {
                             "servicePort": 80,
                             "serverAddresses": [
                                 "192.2.1.100",
                                 "192.2.1.110"
                             ]
                         }
                     ]
                 }
             }
         },
         "Sample_03": {
             "class": "Tenant",
             "defaultRouteDomain": 0,
             "Application_3": {
                 "class": "Application",
                 "template": "http",
             "serviceMain": {
                 "class": "Service_HTTP",
                 "virtualAddresses": [
                     "10.1.2.10"
                 ],
                 "pool": "web_pool3"
                 },
                 "web_pool3": {
                     "class": "Pool",
                     "monitors": [
                         "http"
                     ],
                     "members": [
                         {
                             "servicePort": 80,
                             "serverAddresses": [
                                 "192.3.1.100",
                                 "192.3.1.110"
                             ]
                         }
                     ]
                 }
             }
         }
     }
 }

AS3 Installation

Use the following terraform provisioner to download AS3 RPM from GitHub and install the RPM on BIG-IP.

resource "null_resource" "install_as3" {

  provisioner "local-exec" {

     command = "./install-as3-rpm.sh x.x.x.x xxxx:xxxx"

     }

}

You will need to pass BIG-IP and its credentials as an argument to the install script. This script is available in the examples section of AS3 in the Terraform repo.

Note

AS3 tenants are BIG-IP administrative partitions used to group configurations that support specific AS3 applications. An AS3 application may support a network-based business application or system. AS3 tenants may also include resources shared by applications in other tenants.