参考How To Add the gzip Module to Nginx on Ubuntu 14.04

参考How To Secure Nginx with Let's Encrypt on Ubuntu 16.04

Nginx配置百度云ssl证书教程

SSL证书报错：X509_check_private_key:key values mismatch

场景：服务器端需要拿到浏览器中的url，但是这个url经过了nginx转发，默认拿到的是转发后的url，如果需要拿到之前的url，就需要配置proxy_set_header

location / {
    proxy_pass http://my_app_upstream;
    proxy_set_header Host $host;
    # ...
}

以Ubuntu为例，编辑/etc/nginx/conf.d/<site-name>.conf

server {                    
    listen       80;        
    server_name  www.codedemo.club;
    error_log /mengyunzhi/log/baeldung.cn-nginx.log info;
 
    add_header Cache-Control public;
 
    location / {            
        proxy_pass      http://127.0.0.1:8000;
        proxy_redirect off; 
 
        proxy_set_header X-Real-IP $remote_addr;
        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 X-Forwarded-Proto $scheme;
        # 转发host信息
        proxy_set_header Host $host;
    }
}

如果域名映射地址是wordpress，可能会出现跳转后的地址包含端口的情况，到wordpress管理端中修改url配置即可。