Nginx核心配置-長連接配置
作者：尹正傑
版權聲明：原創作品，謝絕轉載！否則將追究法律責任。
一.長連接配置參數說明
keepalive_timeout number;
設定保持連接超時時長，0表示禁止長連接，默認為75s，通常配置在http字段作為站點全局配置。
keepalive_requests number;
在一次長連接上所允許請求的資源的最大數量，默認為100次。
二.配置長連接實戰
1>.編輯主配置文件
[root@node101.yinzhengjie.org.cn ~]# cat /yinzhengjie/softwares/nginx/conf/nginx.conf
worker_processes 4;
worker_cpu_affinity 00000001 00000010 00000100 00001000;
events {
worker_connections 100000;
use epoll;
accept_mutex on;
multi_accept on;
}
http {
include mime.types;
default_type application/octet-stream;
sendfile on;
gzip on;
charset utf-8;
#開啟長連接后，返回客戶端的會話保持時間為60s，單次長連接累計請求達到指定次數請求或65秒就會被斷開，后面的60為發送給客戶端應答報文頭部中顯示的超時時間設置為60s：如不設置
客戶端將不顯示超時時間。 keepalive_timeout 65 60;
#在一次長連接上所允許請求的資源的最大數量
keepalive_requests 3;
#導入其他路徑的配置文件
include /yinzhengjie/softwares/nginx/conf.d/*.conf;
}
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# nginx -t
nginx: the configuration file /yinzhengjie/softwares/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /yinzhengjie/softwares/nginx/conf/nginx.conf test is successful
[root@node101.yinzhengjie.org.cn ~]#
2>.重新加載配置文件內容
[root@node101.yinzhengjie.org.cn ~]# ps -ef | grep nginx | grep -v grep
root 2840 1 0 09:37 ? 00:00:00 nginx: master process nginx
nginx 4604 2840 0 13:23 ? 00:00:00 nginx: worker process
nginx 4605 2840 0 13:23 ? 00:00:00 nginx: worker process
nginx 4606 2840 0 13:23 ? 00:00:00 nginx: worker process
nginx 4607 2840 0 13:23 ? 00:00:00 nginx: worker process
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# nginx -s reload
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]# ps -ef | grep nginx | grep -v grep
root 2840 1 0 09:37 ? 00:00:00 nginx: master process nginx
nginx 4769 2840 1 14:12 ? 00:00:00 nginx: worker process
nginx 4770 2840 1 14:12 ? 00:00:00 nginx: worker process
nginx 4771 2840 1 14:12 ? 00:00:00 nginx: worker process
nginx 4772 2840 1 14:12 ? 00:00:00 nginx: worker process
[root@node101.yinzhengjie.org.cn ~]#
[root@node101.yinzhengjie.org.cn ~]#
三.測試長連接配置
1>.安裝測試軟件telnet
[root@node108.yinzhengjie.org.cn ~]# yum -y install telnet
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: mirrors.aliyun.com
* extras: mirrors.tuna.tsinghua.edu.cn
* updates: mirror.bit.edu.cn
Resolving Dependencies
--> Running transaction check
---> Package telnet.x86_64 1:0.17-64.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
============================================================================================================================================================================
Package Arch Version Repository Size
============================================================================================================================================================================
Installing:
telnet x86_64 1:0.17-64.el7 base 64 k
Transaction Summary
============================================================================================================================================================================
Install 1 Package
Total download size: 64 k
Installed size: 113 k
Downloading packages:
telnet-0.17-64.el7.x86_64.rpm | 64 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : 1:telnet-0.17-64.el7.x86_64 1/1
Verifying : 1:telnet-0.17-64.el7.x86_64 1/1
Installed:
telnet.x86_64 1:0.17-64.el7
Complete!
[root@node108.yinzhengjie.org.cn ~]#
2>.測試連接次數
[root@node108.yinzhengjie.org.cn ~]# telnet 172.30.1.101 80 Trying 172.30.1.101... Connected to 172.30.1.101. Escape character is '^]'. GET / HTTP/1.1 HOST:node101.yinzhengjie.org.cn HTTP/1.1 200 OK Server: nginx/1.14.2 Date: Tue, 17 Dec 2019 06:17:25 GMT Content-Type: text/html; charset=utf-8 Content-Length: 73 Last-Modified: Tue, 17 Dec 2019 04:54:00 GMT Connection: keep-alive Keep-Alive: timeout=60 ETag: "5df85f68-49" Accept-Ranges: bytes <h1 style='color:rgb(255,0,0)'>https://www.cnblogs.com/yinzhengjie/</h1> GET / HTTP/1.1 HOST:node101.yinzhengjie.org.cn HTTP/1.1 200 OK Server: nginx/1.14.2 Date: Tue, 17 Dec 2019 06:17:38 GMT Content-Type: text/html; charset=utf-8 Content-Length: 73 Last-Modified: Tue, 17 Dec 2019 04:54:00 GMT Connection: keep-alive Keep-Alive: timeout=60 ETag: "5df85f68-49" Accept-Ranges: bytes <h1 style='color:rgb(255,0,0)'>https://www.cnblogs.com/yinzhengjie/</h1> GET / HTTP/1.1 HOST:node101.yinzhengjie.org.cn HTTP/1.1 200 OK Server: nginx/1.14.2 Date: Tue, 17 Dec 2019 06:18:00 GMT Content-Type: text/html; charset=utf-8 Content-Length: 73 Last-Modified: Tue, 17 Dec 2019 04:54:00 GMT Connection: close ETag: "5df85f68-49" Accept-Ranges: bytes <h1 style='color:rgb(255,0,0)'>https://www.cnblogs.com/yinzhengjie/</h1> Connection closed by foreign host. [root@node108.yinzhengjie.org.cn ~]#
3>.測試連接超時時間
[root@node108.yinzhengjie.org.cn ~]# telnet 172.30.1.101 80 #連接成功后啥也不要操作，等65秒過后會自動斷開。
Trying 172.30.1.101...
Connected to 172.30.1.101.
Escape character is '^]'.
Connection closed by foreign host.
[root@node108.yinzhengjie.org.cn ~]#
4>.使用curl命令查看nginx的響應頭部信息
[root@node108.yinzhengjie.org.cn ~]# curl -I http://node101.yinzhengjie.org.cn/
HTTP/1.1 200 OK
Server: nginx/1.14.2
Date: Tue, 17 Dec 2019 06:19:24 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 73
Last-Modified: Tue, 17 Dec 2019 04:54:00 GMT
Connection: keep-alive
Keep-Alive: timeout=60 #這個時間告訴客戶端是60，而咱們上面配置的是告訴客戶端是60秒斷開，其實是65秒才會真正的斷開喲~
ETag: "5df85f68-49"
Accept-Ranges: bytes
[root@node108.yinzhengjie.org.cn ~]#