Microsoft Azure

• Azure ARM template
• Azure Kubernetes Service (AKS)
• Terraform

Prerequisites

Download and install Terraform.

Verify the installation using the terraform command.

$ terraform

You should see output similar to the following.

Usage: terraform [--version] [--help] <command> [args]
...
Common commands:
    apply              Builds or changes infrastructure
    console            Interactive console for Terraform interpolations
    destroy            Destroy Terraform-managed infrastructure
    env                Workspace management
    fmt                Rewrites config files to canonical format

Set the Azure credentials

Export the required credentials in your current shell using the following commands:

echo "Setting environment variables for Terraform"
export ARM_SUBSCRIPTION_ID="your_subscription_id"
export ARM_CLIENT_ID="your_appId"
export ARM_CLIENT_SECRET="your_password"
export ARM_TENANT_ID="your_tenant_id"

For instructions on installing Terraform and configuring it for Azure, see Quickstart: Configure Terraform in Azure Cloud Shell with Bash.

Create a Terraform configuration file

Create a Terraform configuration file named yugabyte-db-config.tf and add the following details to it. The Terraform module can be found in the terraform-azure-yugabyte GitHub repository.

module "yugabyte-db-cluster"
{
  # The source module used for creating clusters on Azure.
  source = "github.com/Yugabyte/terraform-azure-yugabyte"

  # The name of the cluster to be created, change as per need.
  cluster_name = "test-cluster"

  # key pair.
  ssh_private_key = "PATH_TO_SSH_PRIVATE_KEY_FILE"
  ssh_public_key  = "PATH_TO_SSH_PUBLIC_KEY_FILE"
  ssh_user        = "SSH_USER_NAME"

  # The region name where the nodes should be spawned.
  region_name = "YOUR VPC REGION"

  # The name of resource group in which all Azure resource will be created.
  resource_group = "test-yugabyte"

  # Replication factor.
  replication_factor = "3"

  # The number of nodes in the cluster, this cannot be lower than the replication factor.
  node_count = "3"
}

output "outputs"
{
  value = module.yugabyte-db-cluster
}

Create a cluster

Initialize terraform first, if you have not already done so.

$ terraform init

Now, run the following to create the instances and bring up the cluster.

$ terraform apply

After the cluster is created, you can go to the URL http://<node ip or dns name>:7000 to view the UI. You can find the node's public IP address by running the following:

$ terraform state show module.yugabyte-db-cluster.azurerm_public_ip.YugaByte_Public_IP[0]

You can access the cluster UI by going to public IP address of any of the instances at port 7000. The IP address can be viewed by replacing 0 in the preceding command with the desired index.

You can check the state of the nodes at any point by running the following command:

$ terraform show

Verify resources created

The following resources are created by this module:

• module.azure-yugabyte.azurerm_virtual_machine.Yugabyte-Node

  The Azure VM instances.

  For a cluster named test-cluster, the instances are named yugabyte-test-cluster-node-1, yugabyte-test-cluster-node-2, and yugabyte-test-cluster-node-3.

• module.azure-yugabyte.azurerm_network_security_group.Yugabyte-SG

  The security group that allows the various clients to access the YugabyteDB cluster.

  For a cluster named test-cluster, this security group is named yugabyte-test-cluster-SG, with the ports 7000, 9000, 9042, 7100, 9200, and 6379 open to all other instances in the same security group.

• module.azure-yugabyte.null_resource.create_yugabyte_universe

  A local script that configures the newly created instances to form a new YugabyteDB universe.

• module.azure-yugabyte.azurerm_network_interface.Yugabyte-NIC

  The Azure network interface for VM instance.

  For a cluster named test-cluster, the network interface is named yugabyte-test-cluster-NIC-1, yugabyte-test-cluster-NIC-2, and yugabyte-test-cluster-NIC-3.

Destroy the cluster [optional]

To destroy what you just created, you can run the following command:

$ terraform destroy