Deploying Metric Drains with Aptible’s Terraform Provider is relativley straight-forward, with some minor configuration exceptions. Aptible’s Terraform Provider uses the Aptible CLI for authorization and authentication, so please run aptible login before we get started.

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Prerequisites

  1. Terraform
  2. The Aptible CLI
You also need to be logged in to Aptible. 
$ aptible login

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Getting Started

First, lets set up your Terraform directory to work with Aptible. Create a directory with a main.tf file and then run terraform init in the root of the directory. Next, you will define where you want your metric drain to capture metrics. Whether this is a new environment or an exisiting one. If you are placing this in an exisiting environment you can skip this step, just make sure you have your environment ID. 
data "aptible_stack" "test-stack" {
    name = "test-stack"
}

resource "aptible_environment" "test-env" {
    stack_id = data.aptible_stack.test-stack.stack_id
    // if you use a shared stack above, you will have to manually grab your org_id
    org_id = data.aptible_stack.test-stack.org_id
    handle = "test-env"
}
Next, we will actually create the metric drain resource in Terraform, please select the drain type you wish to use from below. 
resource "aptible_metric_drain" "datadog_drain" {
env_id     = data.aptible_environment.example.env_id
drain_type = "datadog"
api_key    = "xxxxx-xxxxx-xxxxx"
}
To check to make sure your changes are valid (in case of any changes not mentioned), run terraform validate To deploy the above changes, run terraform apply

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Troubleshooting

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App configuration issues with Datadog

Some users have reported issues with applications not sending logs to Datadog, applications will need additional configuration set. Below is an example. 
    resource "aptible_app" "load-test-datadog" {
        env_id = data.aptible_environment.example_environment.env_id
        handle = "example-app"
        config = {
            "APTIBLE_DOCKER_IMAGE" : "docker.io/datadog/agent:latest",
            "DD_APM_NON_LOCAL_TRAFFIC" : true,
            "DD_BIND_HOST" : "0.0.0.0",
            "DD_API_KEY" :"xxxxx-xxxxx-xxxxx",
            "DD_HOSTNAME_TRUST_UTS_NAMESPACE" : true,
            "DD_ENV" : "your environment",
            "DD_HOSTNAME" : "dd-hostname" # this does not have to match the hostname
        }
        service {
            process_type = "cmd"
            container_count = 1
            container_memory_limit = 1024
        }
    }
As a final note, if you have any questions about the Terraform provider please reach out to support or checkout our public Terraform Provider Repository for more information!