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我有 wireguard 的问题。我有一个基于 debian 的 VPS 和一个 Manjaro 客户端。这是我/etc/wireguard/wg0.conf的服务器：

[Interface]
Address = 10.0.0.1/24
ListenPort = 194
PrivateKey = <ServerPrivateKey>
PostUp = iptables -A FORWARD -i %i -j ACCEPT; iptables -A FORWARD -o %i -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -D FORWARD -o %i -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE

[Peer]
PublicKey = <ClientPublicKey>
AllowedIPs = 10.0.0.2/32

这是我/etc/wireguard/wg0.conf的一个客户：

[Interface]
Address = 10.0.0.2/32
PrivateKey = <ClientPrivateKey>

[Peer]
PublicKey = <ServerPublicKey>
Endpoint = <ServerIP>:194
AllowedIPs = 0.0.0.0/0, ::/0

这是我的ufw status输出：

Status: active

To                         Action      From
--                         ------      ----
22                         ALLOW       Anywhere                  
443                        ALLOW       Anywhere                  
80                         ALLOW       Anywhere                  
143                        ALLOW       Anywhere                  
993                        ALLOW       Anywhere                  
51820                      ALLOW       Anywhere                  
IMAPS                      ALLOW       Anywhere                  
POP3                       ALLOW       Anywhere                  
SMTP                       ALLOW       Anywhere                  
194                        ALLOW       Anywhere                  
22 (v6)                    ALLOW       Anywhere (v6)             
443 (v6)                   ALLOW       Anywhere (v6)             
80 (v6)                    ALLOW       Anywhere (v6)             
143 (v6)                   ALLOW       Anywhere (v6)             
993 (v6)                   ALLOW       Anywhere (v6)             
51820 (v6)                 ALLOW       Anywhere (v6)             
IMAPS (v6)                 ALLOW       Anywhere (v6)             
POP3 (v6)                  ALLOW       Anywhere (v6)             
SMTP (v6)                  ALLOW       Anywhere (v6)             
194 (v6)                   ALLOW       Anywhere (v6)

这是我的lsmod | grep wireguard输出：

wireguard              94208  0
curve25519_x86_64      36864  1 wireguard
libchacha20poly1305    16384  1 wireguard
ip6_udp_tunnel         16384  1 wireguard
udp_tunnel             20480  1 wireguard
libcurve25519_generic    49152  2 curve25519_x86_64,wireguard

在服务器wg-quick up wg0上之后wg-quick down wg0我遇到了这个错误：
wg-quick: `wg0' is not a WireGuard interface
我敢肯定，错误在我这边。但是我错在哪里了？

每个人！我是 linux 爱好者，我对 debian VPS 上的 nginx 有疑问。直到最近我可以访问我的静态网站，但现在我不能。

这是我的用户名sites-available/example在哪里example：

server {
        listen 80 ;
        listen [::]:80 ;
        server_name example.com ;
        root /var/www/example ;
        index index.html index.htm index.nginx-debian.html ;
        location / {
                try_files $uri $uri/ =404 ;
        }
}

sites-available/example有符号链接sites-enabled

我的nginx/error.log：

2021/12/07 08:57:02 [notice] 7383#7383: signal process started
2021/12/07 09:22:00 [notice] 2195#2195: signal process started

在signal process started我遇到 403 或 404 错误之前：

2021/12/05 17:53:05 [emerg] 12400#12400: open() "/etc/nginx/sites-enabled/mail" failed (2: No such file or directory) in /etc/nginx/nginx.conf:62
2021/12/05 17:55:01 [emerg] 12415#12415: open() "/etc/nginx/sites-enabled/mail" failed (2: No such file or directory) in /etc/nginx/nginx.conf:62
2021/12/05 18:02:33 [emerg] 12468#12468: open() "/etc/nginx/sites-enabled/mail" failed (2: No such file or directory) in /etc/nginx/nginx.conf:62
2021/12/05 18:05:15 [error] 12522#12522: *1 directory index of "/var/www/mail/" is forbidden, client: 212.16.10.194, server: mail.example.com, request: "GET / HTTP/1.1", host: "example.com"
2021/12/05 18:07:45 [error] 12562#12562: *1 directory index of "/var/www/mail/" is forbidden, client: 212.16.10.194, server: mail.example.com, request: "GET / HTTP/1.1", host: "example.com"

我什至重新安装了 nginx，但我仍然无法访问我的网站。我应该怎么做或在哪里搜索信息来解决这个问题？

sudo ss -tnlp|grep :80显示了这一点：

LISTEN 0 128 0.0.0.0:80 0.0.0.0:* users:(("nginx",pid=2524,fd=6),("nginx",pid=2522,fd=6))

LISTEN 0 128 [::]:80 [::]:* users:(("nginx",pid=2524,fd=7),("nginx",pid=2522,fd=7))