Securely Manage Genesys Cloud OAuth Secrets in Terraform

What You Will Build

• One sentence: You will create a Terraform module that provisions Genesys Cloud OAuth clients while ensuring client secrets never persist in the Terraform state file.
• One sentence: This uses the Genesys Cloud REST API via HTTP data sources and the official Genesys Cloud Terraform Provider for resource management.
• One sentence: The tutorial covers HCL configuration, Go-based provider logic, and Bash scripting for secret handling.

Prerequisites

• OAuth Client Type: Service Account or Web Application.
• Required Scopes: oauth:client:write to create clients, oauth:client:read to retrieve details.
• Terraform Version: 1.5.0 or later.
• Genesys Cloud Provider: Version 2.0.0 or later (hashicorp/genesyscloud).
• Runtime Requirements: Terraform CLI installed, jq for JSON parsing, and a shell environment (Bash/Zsh).
• External Dependencies: None beyond standard CLI tools.

Authentication Setup

Before managing OAuth clients, you must authenticate Terraform against Genesys Cloud. The standard method uses a service account with a private key or a basic auth flow. For this tutorial, we assume a basic auth service account is configured in the genesyscloud provider block.

terraform {
  required_providers {
    genesyscloud = {
      source  = "mikenicholls/genesyscloud"
      version = "2.0.0"
    }
  }
}

provider "genesyscloud" {
  # Use environment variables for credentials to avoid hardcoding
  username = var.genesys_username
  password = var.genesys_password
  base_url = "https://api.mypurecloud.com" # Adjust for your region
}

Security Note: Never commit var.genesys_username or var.genesys_password to version control. Use environment variables (TF_VAR_genesys_username) or a secrets manager like HashiCorp Vault.

Implementation

Step 1: Create the OAuth Client Resource

The core challenge is that the genesyscloud_oauth_client resource generates a client_secret. By default, Terraform stores the entire resource state in terraform.tfstate, which means the secret would be visible in plaintext if the state file is compromised.

To mitigate this, we use the sensitive = true attribute in the provider schema (if available) or, more robustly, we handle the secret outside of Terraform’s state tracking by using a data source to fetch the client ID and a separate mechanism for the secret. However, the most reliable pattern for creating the client while keeping the secret out of the state file involves using the Genesys Cloud API directly for the creation step if the provider does not fully support sensitive suppression for generated fields, or relying on the provider’s sensitive flag support.

In recent versions of the Genesys Cloud provider, the client_secret field is marked as sensitive. Let us verify the creation.

resource "genesyscloud_oauth_client" "my_app" {
  name            = "MySecureApp"
  redirect_uris   = ["https://myapp.com/callback"]
  post_logout_uris = ["https://myapp.com/logout"]
  grant_types     = ["authorization_code", "refresh_token"]
  client_type     = "confidential"

  # Critical: Ensure the secret is marked sensitive
  # Note: The provider handles this internally, but we must not output it.
}

Expected Response:
The resource is created in Genesys Cloud. The client_id is stored in state. The client_secret is generated but should be obscured in the state file if the provider supports sensitive attributes correctly.

Error Handling:
If you receive a 409 Conflict, the name already exists. OAuth client names must be unique within the organization.

Step 2: Retrieve the Client Secret Without Persisting It

Even if the provider marks the secret as sensitive, there is a risk of leakage during plan/apply output or if the state file is not encrypted. The safest approach is to retrieve the secret immediately after creation and store it in an external secrets manager (e.g., AWS Secrets Manager, Azure Key Vault, or HashiCorp Vault), then delete it from Terraform’s awareness.

However, Terraform cannot “delete” a field from state for an existing resource without destroying the resource. Therefore, the pattern is:

1. Create the client.
2. Use a null_resource with a local-exec provisioner to fetch the secret via the API and push it to a secrets manager.
3. Do not output the secret.
4. Do not use the secret in other Terraform resources (e.g., do not pass genesyscloud_oauth_client.my_app.client_secret to an AWS IAM role).

Instead, other infrastructure components should read the secret from the external secrets manager.

Here is the HCL to push the secret to AWS Secrets Manager:

# Ensure you have the AWS provider configured
provider "aws" {
  region = "us-east-1"
}

# Create the OAuth Client
resource "genesyscloud_oauth_client" "my_app" {
  name            = "MySecureApp"
  redirect_uris   = ["https://myapp.com/callback"]
  grant_types     = ["authorization_code"]
  client_type     = "confidential"
}

# Push the secret to AWS Secrets Manager
resource "aws_secretsmanager_secret_version" "genesys_client_secret" {
  secret_id  = aws_secretsmanager_secret.genesys_secret.id
  secret_string = jsonencode({
    client_id     = genesyscloud_oauth_client.my_app.client_id
    client_secret = genesyscloud_oauth_client.my_app.client_secret
  })
}

# The secret itself in AWS
resource "aws_secretsmanager_secret" "genesys_secret" {
  name        = "genesys/oauth/my_app"
  description = "OAuth client secret for MySecureApp"
}

Wait, this still puts the secret in Terraform State!
The aws_secretsmanager_secret_version resource stores the secret_string in the Terraform state file. This is a common pitfall. To truly avoid this, you must use a local-exec provisioner to call the API directly and bypass the Terraform state for the secret value.

Step 3: Using Local-Exec to Extract and Store Secret

This is the robust pattern. We create the client, then use a shell script to fetch the secret from the Genesys API and push it to the secrets manager. The secret never touches the Terraform state file because it is handled by the external process.

resource "genesyscloud_oauth_client" "my_app" {
  name            = "MySecureApp"
  redirect_uris   = ["https://myapp.com/callback"]
  grant_types     = ["authorization_code"]
  client_type     = "confidential"
}

resource "null_resource" "push_secret_to_vault" {
  triggers = {
    client_id = genesyscloud_oauth_client.my_app.client_id
  }

  provisioner "local-exec" {
    command = <<EOT
      #!/bin/bash
      set -e

      CLIENT_ID="${genesyscloud_oauth_client.my_app.client_id}"
      USERNAME="${var.genesys_username}"
      PASSWORD="${var.genesys_password}"
      API_BASE="https://api.mypurecloud.com"

      # 1. Get OAuth Token
      TOKEN_RESPONSE=$(curl -s -X POST "${API_BASE}/api/v2/oauth/token" \
        -H "Content-Type: application/x-www-form-urlencoded" \
        -d "grant_type=password&username=${USERNAME}&password=${PASSWORD}")

      ACCESS_TOKEN=$(echo $TOKEN_RESPONSE | jq -r '.access_token')

      if [ -z "$ACCESS_TOKEN" ] || [ "$ACCESS_TOKEN" = "null" ]; then
        echo "Failed to obtain access token"
        exit 1
      fi

      # 2. Fetch Client Details including Secret
      # Note: The secret is only returned on creation or if you have admin rights and fetch the specific client.
      # Actually, the Genesys API does NOT return the secret in the GET /api/v2/oauth/clients/{id} response for security reasons.
      # The secret is ONLY returned in the 201 Created response.
      
      # Since we cannot re-fetch the secret via API after creation, we must rely on the provider's output during the apply.
      # But wait, the provider DOES expose the secret in the state.
      
      # CORRECTION: The Genesys Cloud API returns the client_secret ONLY in the POST response.
      # If you lose it, you must rotate/regenerate it.
      # Therefore, we cannot fetch it later via API. We must capture it at creation time.
      
      # Since Terraform state stores it, we must use the 'sensitive' flag and ensure state encryption.
      # There is no way to avoid the secret being in the Terraform State File if the provider manages it.
      # The best practice is: 
      # 1. Use 'sensitive = true' in the provider (if supported).
      # 2. Encrypt the state file (e.g., AWS S3 with SSE).
      # 3. Never output it.
      
      # HOWEVER, if you truly want it out of state, you must CREATE the client via API directly in a null_resource.
EOT
  }
}

Critical Realization:
The Genesys Cloud API does not return the client_secret in the GET /api/v2/oauth/clients/{id} endpoint. It is only returned in the POST /api/v2/oauth/clients response. This means you cannot retrieve the secret later via API to store it externally. You must capture it at the moment of creation.

Therefore, the only way to keep it out of Terraform state is to create the OAuth client using a null_resource with local-exec, completely bypassing the genesyscloud_oauth_client resource for the creation step.

Revised Step 3: Create Client via API in Local-Exec

This is the definitive solution for zero-secrets-in-state.

variable "genesys_username" {
  type      = string
  sensitive = true
}

variable "genesys_password" {
  type      = string
  sensitive = true
}

resource "null_resource" "create_oauth_client" {
  triggers = {
    # Force recreation if name changes
    client_name = "MySecureApp"
  }

  provisioner "local-exec" {
    command = <<EOT
      #!/bin/bash
      set -e

      API_BASE="https://api.mypurecloud.com"
      CLIENT_NAME="MySecureApp"
      REDIRECT_URI="https://myapp.com/callback"

      # 1. Get Token
      TOKEN_RESP=$(curl -s -X POST "${API_BASE}/api/v2/oauth/token" \
        -H "Content-Type: application/x-www-form-urlencoded" \
        -d "grant_type=password&username=${var.genesys_username}&password=${var.genesys_password}")
      
      ACCESS_TOKEN=$(echo $TOKEN_RESP | jq -r '.access_token')

      # 2. Create Client
      CREATE_RESP=$(curl -s -X POST "${API_BASE}/api/v2/oauth/clients" \
        -H "Authorization: Bearer ${ACCESS_TOKEN}" \
        -H "Content-Type: application/json" \
        -d '{
          "name": "${CLIENT_NAME}",
          "clientType": "confidential",
          "grantTypes": ["authorization_code"],
          "redirectUris": ["${REDIRECT_URI}"]
        }')

      CLIENT_ID=$(echo $CREATE_RESP | jq -r '.id')
      CLIENT_SECRET=$(echo $CREATE_RESP | jq -r '.clientSecret')

      if [ -z "$CLIENT_ID" ] || [ -z "$CLIENT_SECRET" ]; then
        echo "Failed to create client or extract secrets"
        echo "Response: $CREATE_RESP"
        exit 1
      fi

      # 3. Store Secret in AWS Secrets Manager
      aws secretsmanager create-secret \
        --name "genesys/oauth/${CLIENT_NAME}" \
        --secret-string "{\"client_id\":\"${CLIENT_ID}\",\"client_secret\":\"${CLIENT_SECRET}\"}" \
        --region "us-east-1"

      echo "Client created: ${CLIENT_ID}"
      # Do NOT echo CLIENT_SECRET
EOT
  }

  provisioner "local-exec" {
    when    = destroy
    command = <<EOT
      #!/bin/bash
      set -e
      
      API_BASE="https://api.mypurecloud.com"
      CLIENT_NAME="MySecureApp"
      
      # Get Token
      TOKEN_RESP=$(curl -s -X POST "${API_BASE}/api/v2/oauth/token" \
        -H "Content-Type: application/x-www-form-urlencoded" \
        -d "grant_type=password&username=${var.genesys_username}&password=${var.genesys_password}")
      ACCESS_TOKEN=$(echo $TOKEN_RESP | jq -r '.access_token')

      # Find Client ID by Name
      CLIENTS=$(curl -s -X GET "${API_BASE}/api/v2/oauth/clients?name=${CLIENT_NAME}" \
        -H "Authorization: Bearer ${ACCESS_TOKEN}")
      
      CLIENT_ID=$(echo $CLIENTS | jq -r '.entities[0].id // empty')

      if [ -n "$CLIENT_ID" ]; then
        curl -s -X DELETE "${API_BASE}/api/v2/oauth/clients/${CLIENT_ID}" \
          -H "Authorization: Bearer ${ACCESS_TOKEN}"
        echo "Client ${CLIENT_ID} deleted"
      fi

      # Delete from AWS Secrets Manager
      aws secretsmanager delete-secret \
        --secret-id "genesys/oauth/${CLIENT_NAME}" \
        --force-delete-without-recovery \
        --region "us-east-1"
EOT
  }
}

Expected Response:

• The local-exec runs during terraform apply.
• It returns the client_id and client_secret from the JSON response.
• It pushes these values to AWS Secrets Manager.
• The Terraform state file for null_resource.create_oauth_client contains only the triggers and the id of the null resource. It does not contain client_id or client_secret.

Error Handling:

• If the client name already exists, the API returns 409 Conflict. The script should handle this by checking the exit code or response body.
• If the AWS credentials are invalid, the aws secretsmanager command will fail, but the Genesys client will already be created. You must manually clean up the Genesys client if the AWS step fails. Consider adding a rollback mechanism in the script.

Complete Working Example

This is the full main.tf file. It assumes you have the AWS provider configured and your Genesys credentials in environment variables.

terraform {
  required_version = ">= 1.5.0"
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 5.0"
    }
  }
}

variable "genesys_username" {
  type      = string
  sensitive = true
}

variable "genesys_password" {
  type      = string
  sensitive = true
}

resource "null_resource" "create_oauth_client" {
  triggers = {
    client_name = "MySecureApp"
    redirect_uri = "https://myapp.com/callback"
  }

  provisioner "local-exec" {
    command = <<EOT
      #!/bin/bash
      set -e

      API_BASE="https://api.mypurecloud.com"
      CLIENT_NAME="${self.triggers.client_name}"
      REDIRECT_URI="${self.triggers.redirect_uri}"

      # 1. Get Token
      TOKEN_RESP=$(curl -s -X POST "${API_BASE}/api/v2/oauth/token" \
        -H "Content-Type: application/x-www-form-urlencoded" \
        -d "grant_type=password&username=${var.genesys_username}&password=${var.genesys_password}")
      
      ACCESS_TOKEN=$(echo $TOKEN_RESP | jq -r '.access_token')

      if [ -z "$ACCESS_TOKEN" ]; then
        echo "Failed to obtain access token"
        exit 1
      fi

      # 2. Create Client
      CREATE_RESP=$(curl -s -X POST "${API_BASE}/api/v2/oauth/clients" \
        -H "Authorization: Bearer ${ACCESS_TOKEN}" \
        -H "Content-Type: application/json" \
        -d '{
          "name": "${CLIENT_NAME}",
          "clientType": "confidential",
          "grantTypes": ["authorization_code"],
          "redirectUris": ["${REDIRECT_URI}"]
        }')

      CLIENT_ID=$(echo $CREATE_RESP | jq -r '.id')
      CLIENT_SECRET=$(echo $CREATE_RESP | jq -r '.clientSecret')

      if [ -z "$CLIENT_ID" ] || [ -z "$CLIENT_SECRET" ]; then
        echo "Failed to create client"
        echo "Response: $CREATE_RESP"
        exit 1
      fi

      # 3. Store in AWS Secrets Manager
      aws secretsmanager create-secret \
        --name "genesys/oauth/${CLIENT_NAME}" \
        --secret-string "{\"client_id\":\"${CLIENT_ID}\",\"client_secret\":\"${CLIENT_SECRET}\"}" \
        --region "us-east-1"

      echo "Client created successfully"
EOT
  }

  provisioner "local-exec" {
    when    = destroy
    command = <<EOT
      #!/bin/bash
      set -e
      
      API_BASE="https://api.mypurecloud.com"
      CLIENT_NAME="${self.triggers.client_name}"
      
      # Get Token
      TOKEN_RESP=$(curl -s -X POST "${API_BASE}/api/v2/oauth/token" \
        -H "Content-Type: application/x-www-form-urlencoded" \
        -d "grant_type=password&username=${var.genesys_username}&password=${var.genesys_password}")
      ACCESS_TOKEN=$(echo $TOKEN_RESP | jq -r '.access_token')

      # Find Client ID
      CLIENTS=$(curl -s -X GET "${API_BASE}/api/v2/oauth/clients?name=${CLIENT_NAME}" \
        -H "Authorization: Bearer ${ACCESS_TOKEN}")
      
      CLIENT_ID=$(echo $CLIENTS | jq -r '.entities[0].id // empty')

      if [ -n "$CLIENT_ID" ]; then
        curl -s -X DELETE "${API_BASE}/api/v2/oauth/clients/${CLIENT_ID}" \
          -H "Authorization: Bearer ${ACCESS_TOKEN}"
      fi

      aws secretsmanager delete-secret \
        --secret-id "genesys/oauth/${CLIENT_NAME}" \
        --force-delete-without-recovery \
        --region "us-east-1"
EOT
  }
}

Common Errors & Debugging

Error: 409 Conflict on Client Creation

• What causes it: An OAuth client with the same name already exists in the Genesys Cloud organization.
• How to fix it: Change the CLIENT_NAME variable or delete the existing client via the Genesys Admin Console.
• Code Fix: Add a check in the script to search for the client first. If it exists, skip creation and just update the secrets manager.

Error: jq parse error

• What causes it: The API response is not valid JSON (e.g., an HTML error page).
• How to fix it: Check the ACCESS_TOKEN validity. Ensure the username/password are correct and the user has the oauth:client:write scope.
• Code Fix: Add set -x to the bash script to debug the curl output.

Error: AWS Secrets Manager Access Denied

• What causes it: The IAM user running Terraform does not have secretsmanager:CreateSecret permissions.
• How to fix it: Update the IAM policy to allow secretsmanager:CreateSecret and secretsmanager:DeleteSecret for the specific secret name pattern.

Official References

• Genesys Cloud OAuth Clients API
• Terraform Null Resource
• AWS Secrets Manager Terraform Provider