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Алексей Ковальчук
Asked:2021-11-15 11:59:15 +0000 UTC2021-11-15 11:59:15 +0000 UTC

如何将 ovh 上的主 ipv4 更改为故障转移地址之一？

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我有 ovh 主机 game1，debian 9 系统，它有一个主地址和 10 个故障转移地址。
我想将主地址更改为故障转移地址之一。
我需要这个，以便传出连接不使用主地址。

假设主地址是43.144.13.127，并且故障转移 -32.114.67.212

我目前的配置/etc/systemd/network/50-default.network是：

# This file sets the IP configuration of the primary (public) network device.
# You can also see this as "OSI Layer 3" config.
# It was created by the OVH installer, please be careful with modifications.
# Documentation: man systemd.network or https://www.freedesktop.org/software/systemd/man/systemd.network.html

[Match]
MACAddress=s8:a1:22:5b:43:32

[Network]
Description=network interface on public network, with default route
DHCP=no
Address=43.144.13.127/24
Gateway=43.144.13.254
IPv6AcceptRA=no
NTP=ntp.ovh.net
DNS=127.0.0.1
DNS=213.186.33.99
DNS=1032:23d2:3:163::1
Gateway=1032:23d2:0222:42ff:ff:ff:ff:ff

[Address]
Address=1032:23d2:0222:427f::/64

[Route]
Destination=1032:23d2:0222:42ff:ff:ff:ff:ff
Scope=link

[Address]
Address=32.114.67.212/32
Label=failover

# ... и остальные failover адреса

如何使地址32.114.67.212成为主要地址？也就是说，它用于传出连接？

我的逻辑是，因为我可以通过手动指定接口来发出传出请求，如下所示：

root@host:~# curl --interface failover ifconfig.me
32.114.67.212

那么一定有办法指定这个默认接口，但是怎么做呢？

linux

1 个回答

  1. Best Answer

    您可以使用如下命令执行ip r此操作：

    /bin/ip r change default via 43.144.13.254 dev enp1s0f0 proto static src 32.114.67.212

    但是主机重新启动后不会保存此规则。要保存它，您需要/etc/systemd/network/50-default.network像这样更改配置：

    # This file sets the IP configuration of the primary (public) network device.
# You can also see this as "OSI Layer 3" config.
# It was created by the OVH installer, please be careful with modifications.
# Documentation: man systemd.network or https://www.freedesktop.org/software/systemd/man/systemd.network.html

[Match]
MACAddress=s8:a1:22:5b:43:32

[Network]
Description=network interface on public network, with default route
DHCP=no
Address=43.144.13.127/24
Gateway=43.144.13.254
IPv6AcceptRA=no
NTP=ntp.ovh.net
DNS=127.0.0.1
DNS=213.186.33.99
DNS=1032:23d2:3:163::1
Gateway=1032:23d2:0222:42ff:ff:ff:ff:ff

[Address]
Address=1032:23d2:0222:427f::/64

[Route]
Destination=1032:23d2:0222:42ff:ff:ff:ff:ff
Scope=link

[Route]
Gateway=43.144.13.254
PreferredSource=51.195.48.249

[Address]
Address=32.114.67.212/32
Label=failover

# ... и остальные failover адреса

    变化：

    • 添加了一个新部分[Route]，其中添加了两个参数：
      • PreferredSource- 此参数指定我们要为传出连接创建地址的地址（在我的情况下32.114.67.212）。
      • Gateway- 该参数的值取自该节的同名参数[Network]。

    更改配置后，您需要使用以下命令重新启动网络：

    systemctl restart systemd-networkd

    准备好。

    • 1

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