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Mo711
Asked: 2025-02-06 23:20:13 +0800 CST

每次重启后都必须应用 netplan 配置

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我将 Linux 机器设置为路由器和接入点。它运行良好，但有一个例外。每次重启后我都必须这样做才能正常工作。应用 netplan 设置后也可以看到sudo netplan apply差异。您可以在此处看到重启后的结果：ip aip a

 rdlver@rdlver1:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq master br0 state DOWN group default qlen 1000
    link/ether 2c:cf:67:75:12:6d brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether 2c:cf:67:75:12:6e brd ff:ff:ff:ff:ff:ff
4: br0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 1a:f1:3f:8c:c8:77 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.1/24 brd 192.168.1.255 scope global br0
       valid_lft forever preferred_lft forever

应用 netplan 设置后：

rdlver@rdlver1:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq master br0 state DOWN group default qlen 1000
    link/ether 2c:cf:67:75:12:6d brd ff:ff:ff:ff:ff:ff
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br0 state UP group default qlen 1000
    link/ether 2c:cf:67:75:12:6e brd ff:ff:ff:ff:ff:ff
4: br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
    link/ether 1a:f1:3f:8c:c8:77 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.1/24 brd 192.168.1.255 scope global br0
       valid_lft forever preferred_lft forever
    inet6 fe80::18f1:3fff:fe8c:c877/64 scope link 
       valid_lft forever preferred_lft forever

您可以在此处看到/etc/netplan/01-netcfg.yaml已应用的文件：

  network:
  version: 2
  renderer: networkd
  ethernets:
    wlan0:
      dhcp4: no
    eth0:
      dhcp4: no
  bridges:
    br0:
      interfaces: [wlan0,eth0]
      dhcp4: no
      addresses:
        - 192.168.1.1/24

通常这会在启动时应用。顺便说一下，这是启动日志，如果有人能理解这里发生了什么：

rdlver@rdlver1:~$ journalctl -b | grep netplan
Aug 27 16:37:49 rdlver1 systemd[1]: netplan-ovs-cleanup.service - OpenVSwitch configuration for cleanup was skipped because of an unmet condition check (ConditionFileIsExecutable=/usr/bin/ovs-vsctl).
Aug 27 16:37:51 rdlver1 (udev-worker)[483]: eth0: Config file /run/systemd/network/10-netplan-eth0.link is applied to device based on potentially unpredictable interface name.
Feb 01 05:13:12 rdlver1 systemd-networkd[1035]: /run/systemd/network/10-netplan-eth0.network: DHCPv6 client is enabled but IPv6 link-local addressing is disabled. Disabling DHCPv6 client.
Feb 01 05:13:12 rdlver1 systemd-networkd[1035]: eth0: found matching network '/run/systemd/network/10-netplan-eth0.network', based on potentially unpredictable interface name.
Feb 01 05:13:12 rdlver1 systemd-networkd[1035]: eth0: Configuring with /run/systemd/network/10-netplan-eth0.network.
Feb 01 05:13:12 rdlver1 systemd-networkd[1035]: wlan0: Configuring with /run/systemd/network/10-netplan-wlan0.network.
Feb 01 05:13:12 rdlver1 systemd-networkd[1035]: br0: Configuring with /run/systemd/network/10-netplan-br0.network.
Feb 01 05:15:18 rdlver1 generate[1249]: Permissions for /etc/netplan/01-netcfg.yaml are too open. Netplan configuration should NOT be accessible by others.

谢谢您的帮助！

netplan

1 个回答

  1. Best Answer

    命令的输出ip a显示，br0之前处于 状态DOWN，应用 Netplan 后，状态变为UP。
    这可能是 Netplan 配置存在问题。因此，请post-up在 Netplan 配置中添加一个命令来调出桥接接口：

    network:
  version: 2
  renderer: networkd
  ethernets:
    wlan0:
      dhcp4: no
    eth0:
      dhcp4: no
  bridges:
    br0:
      interfaces: [wlan0, eth0]
      dhcp4: no
      addresses:
        - 192.168.1.1/24
      routes:
        - to: 0.0.0.0/0
          via: 192.168.1.1
      nameservers:
        addresses: [8.8.8.8, 8.8.4.4]
      post-up:
        - ip link set br0 up

    然后再次应用 Netplan 并重新启动系统，看看它是否解决了您的问题。

    此外，根据日志显示，存在权限问题：

    Permissions for /etc/netplan/01-netcfg.yaml are too open. Netplan configuration should NOT be accessible by others.

    Netplan 配置文件不应被其他人访问。要解决此问题，请输入以下命令：

    sudo chmod 600 /etc/netplan/01-netcfg.yaml

    如果上述步骤不能解决问题，您可以创建一个 systemd 服务来确保 netplan apply 在启动时运行。

    sudo vi /etc/systemd/system/netplan-apply.service

    添加以下内容：

    [Unit]
Description=Apply Netplan configuration at boot
After=network.target

[Service]
Type=oneshot
ExecStart=/usr/sbin/netplan apply

[Install]
WantedBy=multi-user.target

    然后启用该服务：

    sudo systemctl enable netplan-apply.service
sudo systemctl start netplan-apply.service
    • 1

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