Nginx timeout超时如何配置

keepalive_timeout

http 有一个 keepalive 模式，它告诉 webserver 在处理完一个请求后保持这个 tcp 连接的打开状态。若接收到来自客户端的其它请求，服务端会利用这个未被关闭的连接，而不需要再建立一个连接。

http keep-alive, 網頁的每一個請求都是http (圖片, css等), 而打開http 請求是要先建立tcp 連接, 而如果一個頁面每個請求都要打開及關閉一個tcp 連接就會做成資源的浪費. keepalive_timeout 就是當一個http 請求完成, 其tcp 連接會存留下來的時間, 如果這時有另一個http 請求過來, 會複用這個tcp 連接, 如果再沒有新的請求過來, 才會關閉其tcp連接

user nginx;
worker_processes 1;
 
error_log /var/log/nginx/error.log warn;
pid    /var/run/nginx.pid;
 
 
events {
  worker_connections 1024;
}
 
 
http {
  include    /etc/nginx/mime.types;
  default_type application/octet-stream;
 
  log_format main '$remote_addr - $remote_user [$time_local] "$request" '
           '$status $body_bytes_sent "$http_referer" '
           '"$http_user_agent" "$http_x_forwarded_for"';
 
  access_log /var/log/nginx/access.log main;
 
  sendfile    on;
  tcp_nopush   on;
  tcp_nodelay on;
 
 
  keepalive_timeout 65;
  client_max_body_size 8192m;
 
  #gzip on;
 
  #include /etc/nginx/conf.d/*.conf;
 
 
 
  server {
 listen 80 so_keepalive=30m::;
 listen 443 default ssl;
 
 ssl_certificate /etc/nginx/ssl/server.crt;
 ssl_certificate_key /etc/nginx/ssl/portalkey.key;
 #ssl_password_file /etc/nginx/ssl/ssl.pass;
 
 
    ssl_session_timeout 5m;
    ssl_protocols sslv2 sslv3 tlsv1;
    ssl_ciphers high:!anull:!md5;
    ssl_prefer_server_ciphers on;
 
 location / {
 proxy_request_buffering off;
 proxy_pass http://127.0.0.1:8011/;
 proxy_connect_timeout    180;
    proxy_send_timeout     180;
    proxy_read_timeout     180;
    send_timeout  180;
 }
 location /test1_url/ {
 proxy_pass http://127.0.0.1:8008/;
 proxy_connect_timeout    180;
    proxy_send_timeout     180;
    proxy_read_timeout     180;
    send_timeout  180;
 }
 location /test2_url/ {
 proxy_pass http://127.0.0.1:3000/;
 proxy_connect_timeout    180;
    proxy_send_timeout     180;
    proxy_read_timeout     180;
    send_timeout  180;
 }
  }
}

# 配置段: http，默认75s

keepalive_timeout 60;

• send_timeout :发送数据至客户端超时, 默认60s, 如果连续的60s内客户端没有收到1个字节, 连接关闭

• proxy_connect_timeout: nginx与upstream server的连接超时时间

• proxy_read_timeout: nginx接收upstream server数据超时, 默认60s, 如果连续的60s内没有收到1个字节, 连接关闭

• proxy_send_timeout: nginx发送数据至upstream server超时, 默认60s, 如果连续的60s内没有发送1个字节, 连接关闭

so_timeout:

當用戶跟server開啟了tcp connection --> 一段長時間這個connection 沒traffic (so_keepalive timeout) --> server 發出探測包看用戶是否還存在 --> 若探測包沒回, 則關閉tcp connection

so_keepalive=on|off|[keepidle]:[keepintvl]:[keepcnt]

so_keepalive=30m::10
  will set the idle timeout (tcp_keepidle) to 30 minutes, leave the probe interval (tcp_keepintvl) at its system default, and set the probes count (tcp_keepcnt) to 10 probes.

以上三个参数只能使用一个，不能同时使用， 比如so_keepalive=on, so_keepalive=off或者so_keepalive=30s::(表示等待30s没有数据报文发送探测报文)

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