Databases & Analytics - Getting started with Terraform

Learn how to order a Cloud Database or Analytics service using Terraform.

Cloud Databases and Analytics* allow you to focus on building and deploying cloud applications while OVHcloud takes care of the service infrastructure and maintenance.

Requirements

• Terraform installed
• Access to the OVHcloud API (create your credentials by consulting this guide)
• A Public Cloud project in your OVHcloud account

Instructions

Step 1: Gather the OVHcloud required parameters

Getting your cluster/API tokens information

The "OVH provider" needs to be configured with a set of credentials:

• an application_key
• an application_secret
• a consumer_key

Why?

Because, behind the scenes, the "OVH Terraform provider" is making requests to OVHcloud APIs.

To retrieve this information, please follow our First Steps with the OVHcloud API tutorial.

Specifically, you have to generate these credentials via the OVHcloud token generation page with the following rights:

• GET /cloud/project/*/database/*
• POST /cloud/project/*/database/*
• PUT /cloud/project/*/database/*
• DELETE /cloud/project/*/database/*

Once you have generated your tokens, save them - you will need them shortly.

The last needed information is the service_name: it is the ID of your Public Cloud project.

How to get it?

In the Public Cloud section, you can retrieve your service name ID thanks to the Copy to clipboard button.

You will also use this information in Terraform resources definition files.

Step 2: Gather the set of required parameters

To create a new PostgreSQL® cluster, you will need to specify at least:

• the engine (e.g., "postgresql")
• the version (e.g., "17")
• the region (e.g. "US-EAST-VA")
• the plan (e.g., "business")
• the flavor of the cluster (e.g., "db1-7")

Step 3: Create Terraform files

First, create a main.tf file defining the resources that will be created

terraform {
  required_providers {
    ovh = {
      source  = "ovh/ovh"
      version = ">=2.11.0"
    }
  }
}

provider "ovh" {
  endpoint           = var.ovh.endpoint
  application_key    = var.ovh.application_key
  application_secret = var.ovh.application_secret
  consumer_key       = var.ovh.consumer_key
}

resource "ovh_cloud_project_database" "service" {
  service_name = var.product.project_id
  description  = var.product.name
  engine       = var.product.engine
  version      = var.product.version
  plan         = var.product.plan
  nodes {
    region = var.product.region
  }
  nodes {
    region = var.product region
  }
  nodes {
    region = var.product region
  }
  flavor = var.product.flavor
  ip_restrictions {
    ip = var.product.ip
  }
}

resource "ovh_cloud_project_database_postgresql_user" "dbuser" {
  service_name = ovh_cloud_project_database.service.service_name
  cluster_id   = ovh_cloud_project_database.service.id
  name         = var.access.name
}

Then, create a variables.tf file defining the variables used in main.tf:

variable "ovh" {
  type = map(string)
  default = {
    endpoint           = "ovh-us"
    application_key    = ""
    application_secret = ""
    consumer_key       = ""
  }
}

variable "product" {
  type = map(string)
  default = {
    project_id = ""
    name       = "postgresql-terraform"
    engine.    = ""
    region     = "US-EAST-VA"
    plan       = "business"
    flavor     = "db1-7"
    version    = "17"
    ip         = "0.0.0.0/32"
  }
}

variable "access" {
  type = map(string)
  default = {
    name = "new_user"
  }
}

Here, we defined the ovh-us endpoint because we want to call the OVHcloud US API.

Then, create a secrets.tfvars file containing the required variables values:

ovh = {
  endpoint           = "ovh-us"
  application_key    = "<application_key>"
  application_secret = "<application_secret>"
  consumer_key       = "<consumer_key>"
}

product = {
  project_id = "<service_name>"
  name       = "postgresql-terraform"
  engine     = "postresql"
  region     = "US-EAST-VA"
  plan       = "business"
  flavor     = "db1-7"
  version    = "17"
  ip         = "<ip_range>"
}

access = {
  name = "new_user"
}

Finally, create an outputs.tf file defining the resources that will be exported:

output "cluster_uri" {
  value = ovh_cloud_project_database.service.endpoints.0.uri
}

output "user_name" {
  value = ovh_cloud_project_database_postgresql_user.dbuser.name
}

output "user_password" {
  value     = ovh_cloud_project_database_postgresql_user.dbuser.password
  sensitive = true
}

Step 4: Run

Now we need to initialize Terraform, generate a plan, and apply it.

terraform init

The init command will initialize your working directory which contains .tf configuration files.

Run it first for any new configuration, or after checking out a configuration from a git repository.

The init command will:

• Download and install Terraform providers/plugins
• Initialize backend (if defined)
• Download and install modules (if defined)

Now, we can generate our plan:

terraform plan -var-file=secrets.tfvars

Thanks to the plan command, we can check what Terraform wants to create, modify, or remove.

The plan is OK for us, so let's apply it:

terraform apply -var-file=secrets.tfvars -auto-approve

Finally, export the user credentials and the URI.

export PASSWORD=$(terraform output -raw user_password)
export USER=$(terraform output -raw user_name)
export URI=$(terraform output -raw cluster_uri)

How to deploy with other engines

In this guide, we explained how to deploy a PostgreSQL® service but you can find examples for other engines in our GitHub repository by selecting the folder for your engine and the terrform/hello-world folder.

Go further

Browse all the Databases guides.

Browse the rest of the OVHcloud US documentation for guides on our other products and services.

Learn more about Managed Databases on the OVHcloud US website.

OVHcloud Managed Databases and Analytics:

• Grafana® is a registered trademark of Grafana Labs and is used with the permission of Grafana Labs. OVH SAS and its subsidiaries are not affiliated with or endorsed by Grafana Labs.
• Kafka® is a registered trademark of The Apache Software Foundation and has been licensed for use by OVHcloud, who has no affiliation with and is not endorsed by The Apache Software Foundation.
• MongoDB® is a registered trademark of MongoDB, Inc.
• MySQL® is a registered trademark of Oracle and/or its affiliates.
• PostgreSQL® is a registered trademark of the PostgreSQL Community Association of Canada.