nginx反向代理location proxy配置错误导致请求到代理端口问题的解决方法｜nginx 反代 phpmyadmin

本来使用简单的配置 IP:PORT 这样是可以访问 phpmyadmin 的，但是为了安全肯定不能这样做。也需要 https 访问。

借助 cloudflare 解析域名并代理流量然后得到cloudflare的证书。

登录到首页没问题。 https://abc.example.com 。该域名对应的root（网站根目录）假如是 /path/aaa，server 块配置如下

server
    {
    listen 443 ssl http2;
    proxy_ssl_server_name on;
    # ssl on;
    server_tokens off;
    ssl_certificate    /etc/letsencrypt/live/hellodk.cn/fullchain.pem;
    ssl_certificate_key    /etc/letsencrypt/live/hellodk.cn/privkey.pem;
    ssl_session_timeout 1d;
    #ssl_session_cache shared:SSL:50m;
    ssl_session_tickets off;

    # intermediate configuration. tweak to your needs.
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS';
    ssl_prefer_server_ciphers on;

    # HSTS (ngx_http_headers_module is required) (15768000 seconds = 6 months)
    add_header Strict-Transport-Security max-age=15768000;

    # OCSP Stapling ---
    # fetch OCSP records from URL in ssl_certificate and cache them
    ssl_stapling on;
    ssl_stapling_verify on;

    server_name     abc.example.com;
    index index.html index.htm index.php;
    root /path/aaa;
    #include enable-php.conf;
    client_max_body_size 128M;

    location / {
        proxy_pass http://127.0.0.1:7777;
        proxy_redirect off;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host:$server_port;
    }
}

发现访问 https://abc.example.com 没问题，输入用户名和密码然后点击确定（phpmyadmin: 执行或Go，分别对应中英文文案），页面就一直在转，转了十几秒，然后浏览器url 变成了 https://abc.example.com:7777 （然后后面还拖着一大堆参数）

再看 location 块

location / {
        proxy_pass http://127.0.0.1:7777;
        proxy_redirect off;
        proxy_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Server $host;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host:$server_port;
    }

可能是 location / 没有匹配上所有的资源。而我们需要把所有的资源都要通过 nginx reverse proxy 代理下来，所以解决办法就是把 proxy_redirect 和 proxy_set_header 相关操作放在 server 块下（而不是location块下）

nginx

• http块定义协议
• server块定义一个虚拟主机，一个服务器
• location块定义对应server下的一个请求形式

更改上面的conf文件，改成下面这样

proxy_redirect off;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Server $host;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host:$server_port;

location / {
        proxy_pass http://127.0.0.1:7777;
    }

下面是完整版

server
    {
    listen 443 ssl http2;
    proxy_ssl_server_name on;
    # ssl on;
    server_tokens off;
    ssl_certificate    /etc/letsencrypt/live/hellodk.cn/fullchain.pem;
    ssl_certificate_key    /etc/letsencrypt/live/hellodk.cn/privkey.pem;
    ssl_session_timeout 1d;
    #ssl_session_cache shared:SSL:50m;
    ssl_session_tickets off;

    # intermediate configuration. tweak to your needs.
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS';
    ssl_prefer_server_ciphers on;

    # HSTS (ngx_http_headers_module is required) (15768000 seconds = 6 months)
    add_header Strict-Transport-Security max-age=15768000;

    # OCSP Stapling ---
    # fetch OCSP records from URL in ssl_certificate and cache them
    ssl_stapling on;
    ssl_stapling_verify on;

    server_name     abc.example.com;
    index index.html index.htm index.php;
    root /path/aaa;
    #include enable-php.conf;
    client_max_body_size 128M;

    proxy_redirect off;
    proxy_set_header X-Forwarded-Host $host;
    proxy_set_header X-Forwarded-Server $host;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $host:$server_port;

    location / {
        proxy_pass http://127.0.0.1:7777;    
    }
}

然后 nginx -t、nginx -s reload 测试，成功了！

输入用户名和密码点击执行，很快就登录上了~~

end.