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KVM - nat 或桥接器。我是怎么做到的

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KVM - nat 或桥接器。我是怎么做到的

我有 Debian Jessie 服务器，并且安装了 apache 服务器。 apache 托管了多个来自不同 IP 地址的站点。我的服务器有 KVM 资源。我的问题是 -如何将我的免费 IP 设置为访客 KVM 机器。。我的免费 IP 是 eth0:3 -> 80.80.130.135 我的配置 /etc/network/interfaces 文件是：

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface

auto eth0
auto eth0:0
auto eth0:1
auto eth0:2
auto eth0:3

allow-hotplug eth0
iface eth0 inet static
    address 80.80.130.131
    netmask 255.255.255.192
    network 80.80.130.128
    broadcast 80.80.130.191
    gateway 80.80.130.1
    # dns-* options are implemented by the resolvconf package, if installed
    dns-nameservers 85.17.151.123 62.211.64.122
    dns-search localdomain

iface eth0:0 inet static
    address 80.80.130.132
    netmask 255.255.255.192
    network 80.80.130.128
    gateway 80.80.130.1
    # dns-* options are implemented by the resolvconf package, if installed
    dns-nameservers 85.17.151.123 62.211.64.122
    dns-search localdomain


iface eth0:1 inet static
    address 80.80.130.133
    netmask 255.255.255.192
    network 80.80.130.128
    broadcast 80.80.130.191
    # dns-* options are implemented by the resolvconf package, if installed
    dns-nameservers 85.17.151.123 62.211.64.122
    dns-search localdomain


iface eth0:2 inet static
    address 80.80.130.134
    netmask 255.255.255.192
    network 80.80.130.128
    broadcast 80.80.130.191
    # dns-* options are implemented by the resolvconf package, if installed
    dns-nameservers 85.17.151.123 62.211.64.122
    dns-search localdomain


iface eth0:3 inet static
    address 80.80.130.135
    netmask 255.255.255.192
    network 80.80.130.128
    broadcast 80.80.130.191
    # dns-* options are implemented by the resolvconf package, if installed
    dns-nameservers 85.17.151.123 62.211.64.122
    dns-search localdomain

答案1

  1. 修改/etc/network/interfaces您的 jessie 主机，使其使用桥接接口eth0。

例如，删除您的eth0和eth0:*别名定义并添加以下内容：

auto br0
iface br0 inet static
    address 80.80.130.131
    netmask 255.255.255.192
    network 80.80.130.128
    broadcast 80.80.130.191
    gateway 80.80.130.1
    # dns-* options are implemented by the resolvconf package, if installed
    dns-nameservers 85.17.151.123 62.211.64.122
    post-up ip addr add 80.80.130.132 dev br0
    post-up ip addr add 80.80.130.133 dev br0
    post-up ip addr add 80.80.130.134 dev br0
    bridge_ports eth0
    bridge_stp off
    bridge_maxwait 1
    bridge_fd 1
    bridge_hello 2
    bridge_maxage 12

重新启动后，或者ifdown -a ; ifup -a您可以配置您的来宾：

  1. 配置来宾以使用br0.您可以使用 virt-manager 通过 GUI 来完成此操作，也可以直接使用 编辑 XML 文件virsh edit domainname，并将接口定义更改为如下所示：
<interface type='bridge'>
  <mac address='xx:xx:xx:xx:xx:xx'/>
  <source bridge='br0'/>
  <model type='virtio'/>
  <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
  1. 现在，您可以将来宾配置为使用静态 IP 80.80.130.135 /etc/network/interfaces（如果不是其他 Debian 系统，则可以配置为适合您的 VM 的任何 IP 地址），或者您可以配置dnsmasq将该 IP 分配给 VM 的 MAC 地址。

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