nginx获取后端真实IP，添加后端服务器响应时间并记录日志

1.日志定义

 log_format nginx  '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$proxy_add_x_forwarded_for"'
                    '"$http_x_forwarded_for" "$upstream_response_time"'
                    '"$request_time" "$upstream_status"  "$remote_addr" "$upstream_addr"';
 access_log  /var/log/nginx/access-nginx.log  nginx;



$upstream_addr 是关键
$request_time             #处理完请求所花时间，以秒为单位
$upstream_response_time   #建立连接 到 接收完数据并关闭连接

2. proxy定义

location / {
     proxy_pass http://server;
     proxy_set_header Host $host;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header X-Forwarded-for $remote_addr;
   }

3. 日志展示

10.0.0.1 - - [13/Aug/2020:14:10:32 +0800] "GET / HTTP/1.1" 304 0 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36" "10.0.0.1""-" "0.002""0.002" "304"  "10.0.0.1" "10.0.0.65:80"
10.0.0.1 - - [13/Aug/2020:14:10:32 +0800] "GET / HTTP/1.1" 200 10 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.125 Safari/537.36" "10.0.0.1""-" "0.001""0.001" "200"  "10.0.0.1" "10.0.0.66:80"