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nginx 重启后返回空

tag-icon • tag-icon nginx ubuntu http
nginx 重启后返回空

我买了一个新的 VPS，通过 apt 安装了 Ubuntu server 20.04、nginx、php7.4-fpm、MariaDB。
我 scp 上传了我的（在 Ubuntu 20.04 笔记本电脑上运行）PHP 项目。我可以通过 ssh curl 和笔记本电脑上的浏览器看到“感谢您使用 nginx”页面，但是当我尝试使用时dm.mydomain.tld，两者都返回了注释。请求已登录，access.log
所有权为/var/www/dmroot，与相同/var/www/html。UFW 已禁用，没有 SELINUX。
如下dm.conf所示：


server {
    listen 443 ssl; #http2 ;
    listen [::]:443 ssl; #http2;

    root /var/www/dm;
        ssl_certificate /etc/ssl/certs/cloudflaresource.pem;
        ssl_certificate_key /etc/ssl/private/cloudflaresource.key;

    # Add index.php to the list if you are using PHP
    index index.php; # index.html index.htm index.nginx-debian.html;

    server_name dm.mydomain.tld;
        autoindex on;
    location / {
        # First attempt to serve request as file, then
        # as directory, then fall back to displaying a 404.
        try_files $uri $uri/ =404;
    }
    location ~ \.php$ {
        fastcgi_pass unix:/var/run/php/php7.4-fpm.sock;
    }
}

ssh 控制台的 curl 输出：

root@VPS:~# curl -vk https://dm.mydomain.tld
*   Trying 127.0.0.1:443...
* TCP_NODELAY set
* Connected to dm.mydomain.tld (127.0.0.1) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* successfully set certificate verify locations:
*   CAfile: /etc/ssl/certs/ca-certificates.crt
  CApath: /etc/ssl/certs
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* SSL connection using TLSv1.3 / TLS_AES_256_GCM_SHA384
* ALPN, server accepted to use h2
* Server certificate:
*  subject: O=CloudFlare, Inc.; OU=CloudFlare Origin CA; CN=CloudFlare Origin Certificate
*  start date: Mar  5 07:31:00 2022 GMT
*  expire date: Mar  1 07:31:00 2037 GMT
*  issuer: C=US; O=CloudFlare, Inc.; OU=CloudFlare Origin SSL Certificate Authority; L=San Francisco; ST=California
*  SSL certificate verify result: unable to get local issuer certificate (20), continuing anyway.
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x561a6f79e880)
> GET / HTTP/2
> Host: dm.mydomain.tld
> user-agent: curl/7.68.0
> accept: */*
> 
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* TLSv1.3 (IN), TLS handshake, Newsession Ticket (4):
* old SSL session ID is stale, removing
* Connection state changed (MAX_CONCURRENT_STREAMS == 128)!
< HTTP/2 200 
< server: nginx/1.18.0 (Ubuntu)
< date: Sat, 05 Mar 2022 13:58:11 GMT
< content-type: text/html; charset=UTF-8
< 
* Connection #0 to host dm.mydomain.tld left intact

您可以看到响应是空的。

此外，这是access.log入口。

127.0.0.1 - - [05/Mar/2022:15:44:13 +0100] "GET / HTTP/2.0" 200 0 "-" "curl/7.68.0"

更新：我创建了一个 html 文件并对其进行了 curl 操作，运行正常。但对于简单的 php helloworkd，它不起作用。

答案1

/var/run/php/php7.4-fpm.sock由于问题在重启后出现，所以我检查了 unix 域套接字。 (run llin /var/run/php/)的所有权是www-data，这不应该是，因为我没有更改它。
所以我猜测它是由 nginx 创建的，因为没有。只需更改 dm.conf 中的条目，一切就都正常了：

/var/run/php/php-fpm.sock

另外，请记住取消注释此行：

include snippets/fastcgi-php.conf;

令我烦恼的是没有报告任何错误。

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