Question 103610 in Azure Question posted in
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Using terraform to update existing Azure APIM

I have a no. of API management services setup on Azure already but they are not provisioned using Terraform. Now I want to using terraform to update the backend HTTP endpoint and policies. Is it possible to do so? Is there any data sources for apim I can use? Any example I can refer to?

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2

Answers


  1. 0

    I tried in my environment and got below results:

    Initially, I created Azure APIM management service using below terraform code.

    main.tf

    provider "azurerm" {
  features {}
   }                           
  

resource "azurerm_resource_group" "example" {
  name     = "rg3"
  location = "West Europe"
}

resource "azurerm_api_management" "example" {
  name                = "venkat-demo"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  publisher_name      = "My Company"
  publisher_email     = "[email protected]"

  sku_name = "Developer_1"
}

resource "azurerm_api_management_api" "example" {
  name                = "venkatdemo326"
  resource_group_name = azurerm_resource_group.example.name
  api_management_name = azurerm_api_management.example.name
  revision            = "1"
  display_name        = "vjtestAPI"
  path                = "example"
  protocols           = ["https"]

  

  import {
    content_format = "swagger-link-json"
    content_value  = "http://conferenceapi.azurewebsites.net/?format=json"
  }
}

    Portal:

    enter image description here

    Now I want to using terraform to update the backend HTTP endpoint and policies

    You can use the below terraform code to create resources that manage the backend HTTP endpoint and policies of that service.

    main.tf

    provider "azurerm" {
  features {}
   }   
   
data "azurerm_api_management" "example" {
  name                = "venkat-demo"
  resource_group_name = data.azurerm_resource_group.example.name
}

resource "azurerm_api_management_backend" "example" {
  name                = "backend1"
  api_management_name = data.azurerm_api_management.example.name
  resource_group_name = data.azurerm_api_management.example.resource_group_name
  protocol            = "http"
  url                 = "https://example.com/api"
}

resource "azurerm_api_management_policy" "example" {
    api_management_id = data.azurerm_api_management.example.id
    xml_content = <<XML
<policies>
  <inbound>
    <find-and-replace from="xyz" to="abc" />
  </inbound>
</policies>
XML
}

    Console:

    enter image description here

    Portal:

    enter image description here

    Reference:

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  2. 0

    If you want to change an Azure resource (in this case Azure APIM), you’ll have to first declare the resource with the corresponding resource type (in this case azurerm_api_management) and then to import your existing resource into your Terraform’s state.

    After importing, on the subsequent execution of terraform plan, you’ll see the changes terraform would like to execute based on the difference between your declaration and the current state of your APIM instance.

    You cannot use a terraform data source (like this) if you want to change (=manage) the resource. Data sources can only be used to read attributes from resources.

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