在 Azure 中使用 Terraform 创建中心虚拟网络

  • 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。

中心虚拟网络充当到本地网络的连接的中心点。 虚拟网络承载由辐射型虚拟网络中托管的工作负载占用的共享服务。 出于演示目的，本文不实施共享服务。

在本文中，学习如何：

  • 在中心辐射型拓扑中实现中心虚拟网络。
  • 创建中心 Jumpbox 虚拟机。
  • 创建中心虚拟专用网网关。
  • 创建中心和本地网关连接。

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

中心网络由以下部分组成：

  • 中心虚拟网络
  • 中心虚拟网络网关
  • 中心网关连接

  1. 将本系列第一篇文章中创建的示例目录设为当前目录。

  2. 在示例目录中，创建名为 hub-vnet.tf 的文件。

  3. 插入以下代码：

    locals {
    prefix-hub         = "hub"
    hub-location       = "eastus"
    hub-resource-group = "hub-vnet-rg"
    shared-key         = "4-v3ry-53cr37-1p53c-5h4r3d-k3y"
}

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

resource "azurerm_virtual_network" "hub-vnet" {
    name                = "${local.prefix-hub}-vnet"
    location            = azurerm_resource_group.hub-vnet-rg.location
    resource_group_name = azurerm_resource_group.hub-vnet-rg.name
    address_space       = ["10.0.0.0/16"]

    tags = {
    environment = "hub-spoke"
    }
}

resource "azurerm_subnet" "hub-gateway-subnet" {
    name                 = "GatewaySubnet"
    resource_group_name  = azurerm_resource_group.hub-vnet-rg.name
    virtual_network_name = azurerm_virtual_network.hub-vnet.name
    address_prefixes     = ["10.0.255.224/27"]
}

resource "azurerm_subnet" "hub-mgmt" {
    name                 = "mgmt"
    resource_group_name  = azurerm_resource_group.hub-vnet-rg.name
    virtual_network_name = azurerm_virtual_network.hub-vnet.name
    address_prefixes       = ["10.0.0.64/27"]
}

resource "azurerm_subnet" "hub-dmz" {
    name                 = "dmz"
    resource_group_name  = azurerm_resource_group.hub-vnet-rg.name
    virtual_network_name = azurerm_virtual_network.hub-vnet.name
    address_prefixes       = ["10.0.0.32/27"]
}

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

    ip_configuration {
    name                          = local.prefix-hub
    subnet_id                     = azurerm_subnet.hub-mgmt.id
    private_ip_address_allocation = "Dynamic"
    }

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

#Virtual Machine
resource "azurerm_virtual_machine" "hub-vm" {
    name                  = "${local.prefix-hub}-vm"
    location              = azurerm_resource_group.hub-vnet-rg.location
    resource_group_name   = azurerm_resource_group.hub-vnet-rg.name
    network_interface_ids = [azurerm_network_interface.hub-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-hub}-vm"
    admin_username = var.username
    admin_password = var.password
    }

    os_profile_linux_config {
    disable_password_authentication = false
    }

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

# Virtual Network Gateway
resource "azurerm_public_ip" "hub-vpn-gateway1-pip" {
    name                = "hub-vpn-gateway1-pip"
    location            = azurerm_resource_group.hub-vnet-rg.location
    resource_group_name = azurerm_resource_group.hub-vnet-rg.name

    allocation_method = "Dynamic"
}

resource "azurerm_virtual_network_gateway" "hub-vnet-gateway" {
    name                = "hub-vpn-gateway1"
    location            = azurerm_resource_group.hub-vnet-rg.location
    resource_group_name = azurerm_resource_group.hub-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.hub-vpn-gateway1-pip.id
    private_ip_address_allocation = "Dynamic"
    subnet_id                     = azurerm_subnet.hub-gateway-subnet.id
    }
    depends_on = [azurerm_public_ip.hub-vpn-gateway1-pip]
}

resource "azurerm_virtual_network_gateway_connection" "hub-onprem-conn" {
    name                = "hub-onprem-conn"
    location            = azurerm_resource_group.hub-vnet-rg.location
    resource_group_name = azurerm_resource_group.hub-vnet-rg.name

    type           = "Vnet2Vnet"
    routing_weight = 1

    virtual_network_gateway_id      = azurerm_virtual_network_gateway.hub-vnet-gateway.id
    peer_virtual_network_gateway_id = azurerm_virtual_network_gateway.onprem-vpn-gateway.id

    shared_key = local.shared-key
}

resource "azurerm_virtual_network_gateway_connection" "onprem-hub-conn" {
    name                = "onprem-hub-conn"
    location            = azurerm_resource_group.onprem-vnet-rg.location
    resource_group_name = azurerm_resource_group.onprem-vnet-rg.name
    type                            = "Vnet2Vnet"
    routing_weight = 1
    virtual_network_gateway_id      = azurerm_virtual_network_gateway.onprem-vpn-gateway.id
    peer_virtual_network_gateway_id = azurerm_virtual_network_gateway.hub-vnet-gateway.id

    shared_key = local.shared-key
}

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 创建中心虚拟网络设备