在这台服务器上登录 Cloudflare

先查看cloudflared的服务状态

sudo systemctl status cloudflared

正常情况会看到

cloudflared.service - cloudflared
   Loaded: loaded (/etc/systemd/system/cloudflared.service; enabled)
   Active: active (running) since ...

再先查看隧道状态

cloudflared tunnel list

如果出现

cloudflared.service - cloudflared Loaded: loaded (/etc/systemd/system/cloudflared.service; enabled; vendor preset: enabled) Active: activating (auto-restart) (Result: timeout) since Tue 2026-01-13 06:39:35 CST; 2s ago Process: 1290 ExecStart=/usr/bin/cloudflared --no-autoupdate tunnel run --token XXXXXX> Main PID: 1290 (code=exited, status=0/SUCCESS) CPU: 915ms

这个状态 已经明确告诉你：cloudflared 没连上 Cloudflare 
而且是在 启动→超时→systemd 重启→再超时 的死循环里

重新运行cloudflared

/usr/bin/cloudflared tunnel run --token 你的token

如果出现

ERR Cannot determine default origin certificate path. No file cert.pem in [~/.cloudflared ~/.cloudflare-warp ~/cloudflare-warp /etc/cloudflared /usr/local/etc/cloudflared]. You need to specify the origin certificate path by specifying the origincert option in the configuration file, or set TUNNEL_ORIGIN_CERT environment variable originCertPath= Error locating origin cert: client didn't specify origincert path

说明证书失效了

在 Ubuntu 服务器上执行：

cloudflared login

它会输出一个 URL，例如：

Please open the following URL and log in:
https://dash.cloudflare.com/argotunnel?token=xxxxxr

然后将这串URL地址复制到任何可以打开浏览器的电脑，通过浏览器打开链接，并登录，然后选择绑定的域名即可。

成功后，ubuntu会返回

You have successfully logged in.

并会在服务器上生成证书。位置在

~/.cloudflared/cert.pem