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Kunal Das
Kunal Das

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Deploying Azure Data Factory, Azure Data bricks, Azure Data Lake storage & MySql DB using Terraform

#azure #terraform #devops

Deploying Azure Data Factory, Azure Data bricks, Azure Data Lake storage & MySql DB using Terraform

Kunal Das, Author

Reach at : https://heylink.me/kunaldas

Here I am going to share some terraform code to deploy ADF, ADLS, ADB, and several other necessary resources.

Table of Contents

Let’s start with a resource group where we will store all the resources required.

Resource Group 

data "azurerm_client_config" "Current" {}
resource "azurerm_resource_group" "RG" {
  name     = var.ResourceGroup.Name
  location = var.ResourceGroup.Location
}
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points to note that we will fetch the RG name and RG location in the next resource declaration.

Azure Data Factory: 

resource "azurerm_data_factory" "DataFactory" {
  name                = "DataFactory Name"
  location            = azurerm_resource_group.RG.location
  resource_group_name = azurerm_resource_group.RG.name

  identity {
    type = "SystemAssigned"
  }
}
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Azure Data Bricks: 

resource "azurerm_databricks_workspace" "Databricks" {
  location                      = azurerm_resource_group.RG.location
  name                          = "Databricks Name"
  resource_group_name           = azurerm_resource_group.RG.name
  managed_resource_group_name   = "Databricks Managed Resource Group"
  sku                           = "Databricks Sku"

  custom_parameters {
    no_public_ip        = true
    virtual_network_id  = azurerm_virtual_network.DatabricksVnet.id
    public_subnet_name  = azurerm_subnet.DatabricksSubnetPublic.name
    private_subnet_name = azurerm_subnet.DatabricksSubnetPrivate.name
  }

  depends_on = [
    azurerm_subnet_network_security_group_association.public,
    azurerm_subnet_network_security_group_association.private
  ]
}
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Virtual network: 

resource "azurerm_virtual_network" "DatabricksVnet" {
  name                     = "VNET NAME"
  resource_group_name      = azurerm_resource_group.RG.name
  location                 = azurerm_resource_group.RG.location
  address_space            = ["VNET CIDR"]
}
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Network Security group for ADB: 

resource "azurerm_network_security_group" "DatabricksNSG" {
  name                     = "VirtualNetwork NSG Name"
  resource_group_name      = azurerm_resource_group.RG.name
  location                 = azurerm_resource_group.RG.location
}
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Public subnet for Databricks: 

resource "azurerm_subnet" "DatabricksSubnetPublic" {
  name                 = "VirtualNetwork PublicSubnet Name"
  resource_group_name  = azurerm_resource_group.RG.name
  virtual_network_name = azurerm_virtual_network.DatabricksVnet.name
  address_prefixes     = ["VirtualNetwork PublicSubnet CIDR"]
  service_endpoints    = ["Microsoft.Storage"]

  delegation {
    name = "Microsoft.Databricks.workspaces"
    service_delegation {
      name = "Microsoft.Databricks/workspaces"
      actions = [
        "Microsoft.Network/virtualNetworks/subnets/join/action",
        "Microsoft.Network/virtualNetworks/subnets/prepareNetworkPolicies/action",
        "Microsoft.Network/virtualNetworks/subnets/unprepareNetworkPolicies/action"]
    }
  }
}
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Private subnet for Databricks: 

resource "azurerm_subnet" "DatabricksSubnetPrivate" {
  name                 = "VirtualNetwork PrivateSubnet Name"
  resource_group_name  = azurerm_resource_group.RG.name
  virtual_network_name = azurerm_virtual_network.DatabricksVnet.name
  address_prefixes     = ["VirtualNetwork PrivateSubnet CIDR"]

  delegation {
    name = "Microsoft.Databricks.workspaces"
    service_delegation {
      name = "Microsoft.Databricks/workspaces"
      actions = [
        "Microsoft.Network/virtualNetworks/subnets/join/action",
        "Microsoft.Network/virtualNetworks/subnets/prepareNetworkPolicies/action",
        "Microsoft.Network/virtualNetworks/subnets/unprepareNetworkPolicies/action"]
    }
  }
}
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Network security group for Public subnet: 

resource "azurerm_subnet_network_security_group_association" "public" {
  subnet_id                 = azurerm_subnet.DatabricksSubnetPublic.id
  network_security_group_id = azurerm_network_security_group.DatabricksNSG.id
}
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Network security group for Privatesubnet: 

resource "azurerm_subnet_network_security_group_association" "private" {
  subnet_id                 = azurerm_subnet.DatabricksSubnetPrivate.id
  network_security_group_id = azurerm_network_security_group.DatabricksNSG.id
}
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Now as all the associated network configuration done let’s move to the DATA LAKE STORAGE account creation

Data Lake storage account: 

resource "azurerm_storage_account" "DataLake" {
  name                     = "DataLake Name"
  resource_group_name      = azurerm_resource_group.RG.name
  location                 = azurerm_resource_group.RG.location
  account_tier             = "DataLake Tier"
  account_replication_type = "DataLake Replication"
  is_hns_enabled           = true
  min_tls_version          = "DataLake TLSVersion"

  network_rules {
    # bypass                     = "AzureServices"
    default_action             = "Allow"    
  }
}
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Storage account container: 

resource "azurerm_storage_container" "DataLakeContainer" {  
  for_each              = "DataLake Container"
  name                  = each.key
  storage_account_name  = azurerm_storage_account.DataLake.name
  container_access_type = "private"
}
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Now, let us create SQL related resources

Storage Admin password: 

resource "random_string" "SQLAdminPassword" {
  length      = 5
  special     = true
  min_upper   = 2
  min_numeric = 2
  min_special = 2
}
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SQL server : 

resource "azurerm_mssql_server" "SQLServer" {
  name                         = "SQLServer Name"
  resource_group_name          = azurerm_resource_group.RG.name
  location                     = azurerm_resource_group.RG.location
  version                      = "SQLServer Version"
  administrator_login          = "SQLServer AdministratorLogin"
  administrator_login_password = random_string.SQLAdminPassword.result
  minimum_tls_version          = "SQLServer  TLS Version"
}
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SQL Database: 

resource "azurerm_mssql_database" "SQLDatabase" {
  name           = "SQLDatabase Name"
  server_id      = azurerm_mssql_server.SQLServer.id
  collation      = "SQL_collation"
  max_size_gb    = "SQLDatabase MaxSizeGB"
  sku_name       = "SQLDatabase SKU"
  zone_redundant = "SQLDatabase ZoneRedundant"
}
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This is a complete part by part snippets to create a running ADB ADF system, feel free to reach me in case any clarification required!

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