最近項(xiàng)目中用到了nginx，后臺(tái)用的是Java, 發(fā)現(xiàn)有一個(gè)請(qǐng)求后臺(tái)處理操過了1分鐘，結(jié)果請(qǐng)求Status Code為504 Gateway Time-out.
理解了下nginx 所有timeout相關(guān)的配置，如下：
keepalive_timeout
HTTP 有一個(gè) KeepAlive 模式，它告訴 webserver 在處理完一個(gè)請(qǐng)求后保持這個(gè) TCP 連接的打開狀態(tài)。若接收到來自客戶端的其它請(qǐng)求，服務(wù)端會(huì)利用這個(gè)未被關(guān)閉的連接，而不需要再建立一個(gè)連接。
http keep-alive, 網(wǎng)頁的每一個(gè)請(qǐng)求都是HTTP (圖片, CSS等), 而打開HTTP 請(qǐng)求是要先建立TCP 連接, 而如果一個(gè)頁面每個(gè)請(qǐng)求都要打開及關(guān)閉一個(gè)TCP 連接就會(huì)做成資源的浪費(fèi). keepalive_timeout 就是當(dāng)一個(gè)HTTP 請(qǐng)求完成, 其TCP 連接會(huì)存留下來的時(shí)間, 如果這時(shí)有另一個(gè)HTTP 請(qǐng)求過來, 會(huì)複用這個(gè)TCP 連接, 如果再?zèng)]有新的請(qǐng)求過來, 才會(huì)關(guān)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，默認(rèn)75s
keepalive_timeout 60;
- send_timeout :發(fā)送數(shù)據(jù)至客戶端超時(shí), 默認(rèn)60s, 如果連續(xù)的60s內(nèi)客戶端沒有收到1個(gè)字節(jié), 連接關(guān)閉
- proxy_connect_timeout: nginx與upstream server的連接超時(shí)時(shí)間
- proxy_read_timeout: nginx接收upstream server數(shù)據(jù)超時(shí), 默認(rèn)60s, 如果連續(xù)的60s內(nèi)沒有收到1個(gè)字節(jié), 連接關(guān)閉
- proxy_send_timeout: nginx發(fā)送數(shù)據(jù)至upstream server超時(shí), 默認(rèn)60s, 如果連續(xù)的60s內(nèi)沒有發(fā)送1個(gè)字節(jié), 連接關(guān)閉
so_timeout:
當(dāng)用戶跟SERVER開啟了TCP CONNECTION --> 一段長(zhǎng)時(shí)間這個(gè)CONNECTION 沒traffic (so_keepalive timeout) --> SERVER 發(fā)出探測(cè)包看用戶是否還存在 --> 若探測(cè)包沒回, 則關(guān)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.
以上三個(gè)參數(shù)只能使用一個(gè)，不能同時(shí)使用， 比如so_keepalive=on, so_keepalive=off或者so_keepalive=30s::(表示等待30s沒有數(shù)據(jù)報(bào)文發(fā)送探測(cè)報(bào)文)
以上就是本文的全部?jī)?nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。
