我已经浏览了类似文章中提供的答案，但是尝试连接到Connection refused时仍然出现git.example.com错误。

确切的nginx错误消息如下

2019/11/05 17:16:09 [error] 12175#12175: *1 connect() to unix:/tmp/fcgiwrap.sock failed (111: Connection refused) while connecting to upstream,client: xxx.xxx.xxx.xxx,server: git.example.com,request: "GET / HTTP/1.1",upstream: "fastcgi://unix:/tmp/fcgiwrap.sock:",host: "git.example.com",referrer: "https://example.com/"

ls -l /tmp/fcgiwrap.sock给出

srwxrwxr-x 1 www-data www-data 0 Jul 3 00:56 /tmp/fcgiwrap.sock

我已通过chmod g+w /tmp/fcgiwrap.sock授予了套接字文件的写权限。

ps aux | grep nginx提供以下内容

root     11203 0.0 0.1 47572 1412 ?    Ss 07:17 0:00 nginx: master process /usr/sbin/nginx
www-data 11204 0.0 0.6 47788 6116 ?    S  07:17 0:01 nginx: worker process
www-data 11205 0.0 0.3 47572 2856 ?    S  07:17 0:02 nginx: worker process
www-data 11206 0.0 0.4 47572 5632 ?    S  07:17 0:02 nginx: worker process
www-data 11207 0.0 0.0 47572 2856 ?    S  07:17 0:02 nginx: worker process
pi       11996 0.0 0.0 4733  576  ?    S  07:17 0:01 grep nginx

Nginx用户为www-data。我怀疑这是我的Nginx conf文件。请注意，我同时在端口443上监听了git.example.com和example.com，但是在我的DNS设置中有A前缀的git记录。

server {
  listen 443 ssl;
  server_name git.example.com;

  location ~ ^.*\.git/(HEAD|info/refs|objects/info/.*|git-(upload|receive)-pack)$ {
    root /usr/share/nginx/example/git;
    auth_basic "Restricted";
    auth_basic_user_file /usr/share/nginx/example/.gitpasswd;
    fastcgi_pass  unix:/tmp/fcgiwrap.sock;
    fastcgi_param SCRIPT_FILENAME   /usr/lib/git-core/git-http-backend;
    fastcgi_param PATH_INFO         $uri;
    fastcgi_param GIT_PROJECT_ROOT  /usr/share/nginx/example/git;
    fastcgi_param GIT_HTTP_EXPORT_ALL "";
    fastcgi_param REMOTE_USER $remote_user;
    include fastcgi_params;
  }
  location /index.cgi {
    root /usr/share/gitweb;
    include fastcgi_params;
    gzip off;
    fastcgi_param SCRIPT_NAME $uri;
    fastcgi_param GITWEB_CONFIG /etc/gitweb.conf;
    fastcgi_pass unix:/tmp/fcgiwrap.sock;
  }
  location / {
    root /usr/share/gitweb;
    index index.cgi;
  }

  ssl_certificate /.../fullchain.pem;
  ssl_certificate /.../privkey.pem;


}

请注意，我安装并运行了fcgiwrap，尽管给了我一个设置区域设置失败的错误-它会自动回退到后备区域设置（“ en_GB.UTF-8”）。