配置AHV虚拟机的PXE

  • 2021年9月16日
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  • raaji Nutanix员工
  • Nutanix员工
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该任务指导系统管理员通过PXE方式配置虚拟机通过网络启动。必备事项通过网络引导称为PXE引导，不需要使用安装介质。当虚拟机启动时，启用pxe的虚拟机会与DHCP服务器通信，以获取所需的启动文件信息。

配置AHV虚拟机的PXE启动。

  • 配置虚拟机通过网络启动。

  • 配置PXE环境

将虚拟机配置为通过网络引导的过程与托管网络和非托管网络相同。被配置为使用PXE的虚拟机在后续重启时将通过网络引导，直到虚拟机的启动顺序被改变。

在AHV主机上，为所管网络中的虚拟机配置PXE环境。

  1. 登录到Prism web控制台，点击齿轮图标，然后点击网络配置在菜单。弹出“网络”对话框。

  2. 在“Virtual Networks”页签中，单击要为其配置PXE环境的网络所显示的铅笔图标。需要PXE启动信息的虚拟机需在该网络中。

  3. 在“更新网络”对话框中，执行以下操作:

    1. 选择“配置域设置”复选框，在“域设置”区域框中执行以下操作:

    2. 在“TFTP Server name”字段中指定TFTP服务器的主机名或IP地址。

    3. 如果在此字段中指定主机名，请确保在域名服务器(逗号分隔)中也指定DNS设置。域名搜索(逗号分隔)和域名字段

  4. 在引导文件名称，指定虚拟机需要使用的启动文件URL和启动文件。例如,tftp: / /ip_address/boot_filename.bin，其中ip_address为TFTP服务器的IP地址(如果指定DNS设置，则为主机名)boot_filename.bin为PXE启动文件。

  • 点击保存．

  1. 点击关闭．


Raaji
You can configure a VM to boot over the network in a Preboot Execution Environment (PXE). booting over the network is called PXE booting and does not require the use of installation media. When starting up, a PXE-enabled VM communicates with a DHCP server to obtain information about the boot file it requires.<\/span><\/p>

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Configuring PXE boot for an AHV VM involves performing the following steps:<\/span><\/p>

  • \t

    Configuring the VM to boot over the network.<\/span><\/p>\t<\/li>\t

  • \t

    Configuring the PXE environment.<\/span><\/p>\t<\/li><\/ul>

    \u00a0<\/p>

    The procedure for configuring a VM to boot over the network is the same for managed and unmanaged networks. A VM that is configured to use PXE boots over the network on subsequent restarts until the boot order of the VM is changed.<\/span><\/p>

    \u00a0<\/p>

    To configure a PXE environment for a VM on a managed network on an AHV host, do the following:<\/span><\/p>

    \u00a0<\/p>

    1. \t

      Log on to the Prism web console, click the gear icon, and then click <\/span>Network configuration<\/strong> in the menu. The Network dialog box is displayed.<\/span><\/p>\t<\/li>\t

    2. \t

      On the Virtual Networks tab, click the pencil icon shown for the network for which you want to configure a PXE environment. The VMs that require the PXE boot information must be on this network.<\/span><\/p>\t<\/li>\t

    3. \t

      In the Update Network dialog box, do the following:<\/span><\/p>\t

      1. \t\t

        Select the Configure Domain Settings check box and do the following in the fields shown in the domain setting sections:<\/span><\/p>\t\t<\/li>\t\t

      2. \t\t

        In the TFTP Server name field, specify the host name or IP address of the TFTP server.<\/span><\/p>\t\t<\/li>\t\t

      3. \t\t

        If you specify a host name in this field, make sure to also specify DNS settings in the Domain Name Servers (comma separated). Domain Search (comma separated) and domain Name fields<\/span><\/p>\t\t<\/li>\t<\/ol><\/li>\t

      4. \t

        In the <\/span>Boot File Name<\/strong> field, specify the boot file URL and boot file that the VMs must use. For example, tftp:\/\/<\/span>ip_address<\/span>\/<\/span>boot_filename.bin<\/span>, where ip_address is the IP address (or host name, if you specify DNS settings) of the TFTP server and <\/span>boot_filename.bin<\/span> is the PXE boot file.<\/span><\/p>\t<\/li><\/ol>

        • \t

          Click <\/span>Save<\/strong>.<\/span><\/p>\t<\/li><\/ul>

          1. \t

            Click <\/span>Close<\/strong>.<\/span><\/p>\t<\/li><\/ol>


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