Google-Compute-Engine

無法通過 Google Compute Engine VM 上的 systemd-networkd 配置 Wireguard 設備

  • August 15, 2021

Google Compute Engine VM 上的 Debian Buster 映像，我將這個 systemd-networkd 配置放置在 /etc/systemd/network/wg0.netdev 以配置 Wireguard 設備：

[NetDev]
Name=wg0
Kind=wireguard

[WireGuard]
PrivateKey = XXXXX
ListenPort = 51820

[WireGuardPeer]
Endpoint = XXXXX:51820
PublicKey = XXXXX
AllowedIPs = XXXXX/32
AllowedIPs = XXXXX/24

啟動 systemd-networkd 服務時，出現此錯誤：

Starting Network Service...
Failed to generate predictable MAC address for wg0: No such file or directory
Could not load configuration files: No such file or directory
systemd-networkd.service: Main process exited, code=exited, status=1/FAILURE

奇怪的是：

  1. 我可以通過手動配置而不是通過 systemd 在 GCP 伺服器上成功啟動 wg0 介面
  2. 我可以在其他提供商虛擬機（測試 Vultr 和本地 Vagrant）上成功使用上述 systemd-networkd 配置

因此，該錯誤僅發生在 GCP 伺服器上使用 systemd-networkd 配置的特定組合中。

我在所有伺服器上使用完全相同的 Linux 核心和 Wireguard 版本。如果它是特定於 GCP 的配置，我似乎找不到任何相關文件。

自從我的原始報告以來，問題似乎已經解決，無論是在 GCP 的圖像中，還是在 systemd 本身中。現在工作正常。

我已經使用 Ubuntu 18.04 檢查了 GCE VM 上的 Wireguard，它執行時沒有任何問題。

請在下面找到我的步驟：

  1. 基於 Ubuntu 18.04 創建虛擬機實例
$ gcloud compute instances create instance-1 --machine-type=e2-medium --can-ip-forward --tags=vpn --image=ubuntu-1804-bionic-v20201111 --image-project
=ubuntu-os-cloud
  1. 創建防火牆規則：
$ gcloud compute firewall-rules create to-vpn --direction=INGRESS --priority=1000 --network=default --action=ALLOW --rules=udp:51820 --source-ranges=0.0.0.0/0 --target-tags=vpn
  1. 安裝wireguard-tools：
$ gcloud compute ssh instance-1
instance-1:~$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.5 LTS"
instance-1:~$ sudo apt update
instance-1:~$ sudo apt upgrade
instance-1:~$ sudo apt install wireguard-tools
  1. 生成伺服器密鑰：
instance-1:~$ umask 077; wg genkey | tee privatekey | wg pubkey > publickey
instance-1:~$ sudo cat privatekey 
2PSZW0mLV5YYE0oPBTKtOuZoQHYCIsoEg8KBcLdL+FY=
  1. 生成伺服器配置：
instance-1:~$ sudo cat /etc/wireguard/wg0.conf
[Interface]
Address = 10.156.0.17
MTU = 1440
ListenPort = 51820
PrivateKey = 2PSZW0mLV5YYE0oPBTKtOuZoQHYCIsoEg8KBcLdL+FY=
  1. 啟用並啟動服務：
instance-1:~$ sudo systemctl enable wg-quick@wg0
instance-1:~$ sudo systemctl start wg-quick@wg0
instance-1:~$ sudo systemctl status wg-quick@wg0
● wg-quick@wg0.service - WireGuard via wg-quick(8) for wg0
  Loaded: loaded (/lib/systemd/system/wg-quick@.service; indirect; vendor preset: enabled)
  Active: active (exited) since Mon 2020-11-16 16:42:07 UTC; 10s ago
    Docs: man:wg-quick(8)
          man:wg(8)
          https://www.wireguard.com/
          https://www.wireguard.com/quickstart/
          https://git.zx2c4.com/wireguard-tools/about/src/man/wg-quick.8
          https://git.zx2c4.com/wireguard-tools/about/src/man/wg.8
 Process: 4937 ExecStart=/usr/bin/wg-quick up wg0 (code=exited, status=0/SUCCESS)
Main PID: 4937 (code=exited, status=0/SUCCESS)
   Tasks: 0 (limit: 4671)
  CGroup: /system.slice/system-wg\x2dquick.slice/wg-quick@wg0.service

Nov 16 16:42:07 instance-1 systemd[1]: Starting WireGuard via wg-quick(8) for wg0...
Nov 16 16:42:07 instance-1 wg-quick[4937]: [#] ip link add wg0 type wireguard
Nov 16 16:42:07 instance-1 wg-quick[4937]: [#] wg setconf wg0 /dev/fd/63
Nov 16 16:42:07 instance-1 wg-quick[4937]: [#] ip -4 address add 10.156.0.17 dev wg0
Nov 16 16:42:07 instance-1 wg-quick[4937]: [#] ip link set mtu 1440 up dev wg0
Nov 16 16:42:07 instance-1 systemd[1]: Started WireGuard via wg-quick(8) for wg0.
  1. 檢查服務狀態：
instance-1:~$ sudo wg
interface: wg0
 public key: 4sLXXmfK8Llr84wzoy8vfV3B0lV0w/RlR94YPnAbYS4=
 private key: (hidden)
 listening port: 51820
instance-1:~$ sudo ip a show wg0
3: wg0: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1440 qdisc noqueue state UNKNOWN group default qlen 1000
   link/none 
   inet 10.156.0.17/32 scope global wg0
      valid_lft forever preferred_lft forever
  1. 重置 VM 實例並檢查狀態：
instance-1:~$ sudo systemctl status systemd-networkd
● systemd-networkd.service - Network Service
  Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled; vendor preset: enabled)
  Active: active (running) since Mon 2020-11-16 16:54:52 UTC; 7min ago
    Docs: man:systemd-networkd.service(8)
Main PID: 751 (systemd-network)
  Status: "Processing requests..."
   Tasks: 1 (limit: 4671)
  CGroup: /system.slice/systemd-networkd.service
          └─751 /lib/systemd/systemd-networkd

Nov 16 16:54:52 instance-1 systemd-networkd[751]: ens4: IPv6 successfully enabled
Nov 16 16:54:52 instance-1 systemd-networkd[751]: lo: Link is not managed by us
Nov 16 16:54:52 instance-1 systemd-networkd[751]: ens4: Link UP
Nov 16 16:54:52 instance-1 systemd-networkd[751]: ens4: Gained carrier
Nov 16 16:54:52 instance-1 systemd-networkd[751]: ens4: DHCPv4 address 10.156.0.17/32 via 10.156.0.1
Nov 16 16:54:52 instance-1 systemd-networkd[751]: Not connected to system bus, not setting hostname.
Nov 16 16:54:53 instance-1 systemd-networkd[751]: ens4: Gained IPv6LL
Nov 16 16:54:53 instance-1 systemd-networkd[751]: ens4: Configured
Nov 16 16:55:01 instance-1 systemd-networkd[751]: wg0: Link UP
Nov 16 16:55:01 instance-1 systemd-networkd[751]: wg0: Gained carrier
$ sudo systemctl status wg-quick@wg0
● wg-quick@wg0.service - WireGuard via wg-quick(8) for wg0
  Loaded: loaded (/lib/systemd/system/wg-quick@.service; indirect; vendor preset: enabled)
  Active: active (exited) since Mon 2020-11-16 16:55:01 UTC; 8min ago
    Docs: man:wg-quick(8)
          man:wg(8)
          https://www.wireguard.com/
          https://www.wireguard.com/quickstart/
          https://git.zx2c4.com/wireguard-tools/about/src/man/wg-quick.8
          https://git.zx2c4.com/wireguard-tools/about/src/man/wg.8
 Process: 1115 ExecStart=/usr/bin/wg-quick up wg0 (code=exited, status=0/SUCCESS)
Main PID: 1115 (code=exited, status=0/SUCCESS)

Nov 16 16:55:01 instance-1 systemd[1]: Starting WireGuard via wg-quick(8) for wg0...
Nov 16 16:55:01 instance-1 wg-quick[1115]: [#] ip link add wg0 type wireguard
Nov 16 16:55:01 instance-1 wg-quick[1115]: [#] wg setconf wg0 /dev/fd/63
Nov 16 16:55:01 instance-1 wg-quick[1115]: [#] ip -4 address add 10.156.0.17 dev wg0
Nov 16 16:55:01 instance-1 wg-quick[1115]: [#] ip link set mtu 1440 up dev wg0
Nov 16 16:55:01 instance-1 systemd[1]: Started WireGuard via wg-quick(8) for wg0.
instance-1:~$ sudo wg
interface: wg0
 public key: 4sLXXmfK8Llr84wzoy8vfV3B0lV0w/RlR94YPnAbYS4=
 private key: (hidden)
 listening port: 51820
instance-1:~$ sudo ip a show wg0
3: wg0: <POINTOPOINT,NOARP,UP,LOWER_UP> mtu 1440 qdisc noqueue state UNKNOWN group default qlen 1000
   link/none 
   inet 10.156.0.17/32 scope global wg0
      valid_lft forever preferred_lft forever

此外，請在此處查看Ubuntu 較新版本的第 3 方指南。

引用自：https://serverfault.com/questions/1005368

相關問答

Dhcp

阻止 Google Compute 實例配置第二個網路介面

  • September 21, 2020
檢視問答
Networking

如何將wireguard vpn 配置文件轉換為openvpn？

  • October 8, 2022
檢視問答
Google-Cloud-Platform

無法在 Google Cloud 中創建項目

  • September 27, 2022
檢視問答
Linux

在 GCP 中更改 SSH 埠導致拒絕連接

  • June 22, 2022
檢視問答
Google-Cloud-Platform

如果已經創建轉發規則，如何打開介面的 IP 轉發

  • May 3, 2022
檢視問答
Firewall

Wireguard 未完成握手

  • April 23, 2022
檢視問答