在 Azure 中使用 Terraform 创建本地虚拟网络

  • 项目

使用 Terraform 可以定义、预览和部署云基础结构。 使用 Terraform 时，请使用 HCL 语法来创建配置文件。 利用 HCL 语法，可指定 Azure 这样的云提供程序和构成云基础结构的元素。 创建配置文件后，请创建一个执行计划，利用该计划，可在部署基础结构更改之前先预览这些更改。 验证了更改后，请应用该执行计划以部署基础结构。

本文介绍如何在 Azure 中实现本地网络。 可以将示例网络替换为专用虚拟网络。 为此，请修改子网 IP 地址以适应你的环境。

在本文中，学习如何：

  • 在中心辐射型拓扑中实现本地 VNet
  • 创建中心网络设备资源
  • 创建本地虚拟机
  • 创建本地虚拟专用网络网关

1.配置环境

  • Azure 订阅：如果没有 Azure 订阅，请在开始之前创建一个免费帐户。

2. 实现 Terraform 代码

  1. 使本系列的第一篇文章中创建的示例目录成为当前目录。

  2. 创建名为 on-prem.tf 的文件并插入下列代码：

    locals {
    onprem-location       = "eastus"
    onprem-resource-group = "onprem-vnet-rg"
    prefix-onprem         = "onprem"
}

resource "azurerm_resource_group" "onprem-vnet-rg" {
    name     = local.onprem-resource-group
    location = local.onprem-location
}

resource "azurerm_virtual_network" "onprem-vnet" {
    name                = "onprem-vnet"
    location            = azurerm_resource_group.onprem-vnet-rg.location
    resource_group_name = azurerm_resource_group.onprem-vnet-rg.name
    address_space       = ["192.168.0.0/16"]

    tags = {
    environment = local.prefix-onprem
    }
}

resource "azurerm_subnet" "onprem-gateway-subnet" {
    name                 = "GatewaySubnet"
    resource_group_name  = azurerm_resource_group.onprem-vnet-rg.name
    virtual_network_name = azurerm_virtual_network.onprem-vnet.name
    address_prefixes     = ["192.168.255.224/27"]
}

resource "azurerm_subnet" "onprem-mgmt" {
    name                 = "mgmt"
    resource_group_name  = azurerm_resource_group.onprem-vnet-rg.name
    virtual_network_name = azurerm_virtual_network.onprem-vnet.name
    address_prefixes     = ["192.168.1.128/25"]
}

resource "azurerm_public_ip" "onprem-pip" {
    name                         = "${local.prefix-onprem}-pip"
    location            = azurerm_resource_group.onprem-vnet-rg.location
    resource_group_name = azurerm_resource_group.onprem-vnet-rg.name
    allocation_method   = "Dynamic"

    tags = {
        environment = local.prefix-onprem
    }
}

resource "azurerm_network_interface" "onprem-nic" {
    name                 = "${local.prefix-onprem}-nic"
    location             = azurerm_resource_group.onprem-vnet-rg.location
    resource_group_name  = azurerm_resource_group.onprem-vnet-rg.name
    enable_ip_forwarding = true

    ip_configuration {
    name                          = local.prefix-onprem
    subnet_id                     = azurerm_subnet.onprem-mgmt.id
    private_ip_address_allocation = "Dynamic"
    public_ip_address_id          = azurerm_public_ip.onprem-pip.id
    }
}

# Create Network Security Group and rule
resource "azurerm_network_security_group" "onprem-nsg" {
    name                = "${local.prefix-onprem}-nsg"
    location            = azurerm_resource_group.onprem-vnet-rg.location
    resource_group_name = azurerm_resource_group.onprem-vnet-rg.name

    security_rule {
        name                       = "SSH"
        priority                   = 1001
        direction                  = "Inbound"
        access                     = "Allow"
        protocol                   = "Tcp"
        source_port_range          = "*"
        destination_port_range     = "22"
        source_address_prefix      = "*"
        destination_address_prefix = "*"
    }

    tags = {
        environment = "onprem"
    }
}

resource "azurerm_subnet_network_security_group_association" "mgmt-nsg-association" {
    subnet_id                 = azurerm_subnet.onprem-mgmt.id
    network_security_group_id = azurerm_network_security_group.onprem-nsg.id
}

resource "azurerm_virtual_machine" "onprem-vm" {
    name                  = "${local.prefix-onprem}-vm"
    location              = azurerm_resource_group.onprem-vnet-rg.location
    resource_group_name   = azurerm_resource_group.onprem-vnet-rg.name
    network_interface_ids = [azurerm_network_interface.onprem-nic.id]
    vm_size               = var.vmsize

    storage_image_reference {
    publisher = "Canonical"
    offer     = "UbuntuServer"
    sku       = "16.04-LTS"
    version   = "latest"
    }

    storage_os_disk {
    name              = "myosdisk1"
    caching           = "ReadWrite"
    create_option     = "FromImage"
    managed_disk_type = "Standard_LRS"
    }

    os_profile {
    computer_name  = "${local.prefix-onprem}-vm"
    admin_username = var.username
    admin_password = var.password
    }

    os_profile_linux_config {
    disable_password_authentication = false
    }

    tags = {
    environment = local.prefix-onprem
    }
}

resource "azurerm_public_ip" "onprem-vpn-gateway1-pip" {
    name                = "${local.prefix-onprem}-vpn-gateway1-pip"
    location            = azurerm_resource_group.onprem-vnet-rg.location
    resource_group_name = azurerm_resource_group.onprem-vnet-rg.name

    allocation_method = "Dynamic"
}

resource "azurerm_virtual_network_gateway" "onprem-vpn-gateway" {
    name                = "onprem-vpn-gateway1"
    location            = azurerm_resource_group.onprem-vnet-rg.location
    resource_group_name = azurerm_resource_group.onprem-vnet-rg.name

    type     = "Vpn"
    vpn_type = "RouteBased"

    active_active = false
    enable_bgp    = false
    sku           = "VpnGw1"

    ip_configuration {
    name                          = "vnetGatewayConfig"
    public_ip_address_id          = azurerm_public_ip.onprem-vpn-gateway1-pip.id
    private_ip_address_allocation = "Dynamic"
    subnet_id                     = azurerm_subnet.onprem-gateway-subnet.id
    }
    depends_on = [azurerm_public_ip.onprem-vpn-gateway1-pip]

}

Azure 上的 Terraform 故障排除

排查在 Azure 上使用 Terraform 时遇到的常见问题

后续步骤

在 Azure 中使用 Terraform 创建中心虚拟网络