nginx七种状态

今天，我们通过shell脚本来对Nginx进行状态跟踪。
操作步骤：
1）启动Nginx的跟踪服务；
2）编写shell脚本获取；

1. 启动Nginx的跟踪服务
   Nginx 的功能模块中有一个ngx_http_stub_status_module的模块，记录着Nginx的基本访问状态信息，但需要在配置才能启动起来。
   注意：yum安装方式也默认已安装该模块；

   1. 安装Nginx

   [root@web01]# yum install -y nginx

   2. 启动跟踪服务

   [root@web01 nginx]# cd /etc/nginx
   [root@web01 nginx]# cat nginx.conf
   worker_processes 1;
   events {
   worker_connections 1024;
   }
   http {
   include mime.types;
   default_type application/octet-stream;
   sendfile on;
   keepalive_timeout 65;
   server {
   listen 80;
   server_name localhost;
   location / {
   root html;
   index index.html index.htm;
   }
   error_page 500 502 503 504 /50x.html;
   location = /50x.html {
   root html;
   }

   启动状态跟踪

   location /nginx_status {
       stub_status on; #打开状态跟踪的功能
       access_log off; #关闭记录访问日志的功能
   }

   }
   }
   [root@web01 nginx]# nginx -t
   nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
   nginx: configuration file /etc/nginx/nginx.conf test is successful
   [root@web01 nginx]# nginx
   [root@web01 nginx]# netstat -lntup
   Active Internet connections (only servers)
   Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
   tcp 0 0 0.0.0.0:80 0.0.0.0: LISTEN 1405/nginx
   tcp 0 0 0.0.0.0:22 0.0.0.0: LISTEN 1188/sshd
   tcp 0 0 :::22 :::* LISTEN 1188/sshd

   3. curl检测，获取到当前Nginx的状态信息

   [root@web01 nginx]# curl 10.0.0.7/nginx_status
   Active connections: 1
   server accepts handled requests
   1 1 1
   Reading: 0 Writing: 1 Waiting: 0
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2. 编写脚本获取状态
   [root@web01 scripts]# cat nginx_status.sh
   #!/bin/bash
   ##############################################################

   File Name: nginx_status.sh

   Version: V1.0

   Author: oldboy

   Organization: www.oldboyedu.com

   Created Time : 2019-01-19 20:31:06

   Description:

   ##############################################################
   NGINX_URL=$2
   NGINX_PORT=$3

[ ! $NGINX_URL ] && {
echo $"USAGE:$0 {active|reading|writing|waiting|accepts|handled|requests} url [port]"
exit 1
}

[ ! $NGINX_PORT ] && {
NGINX_PORT=80
}

NGINX_COMMAND=$1
nginx_active(){
/usr/bin/curl -s "http://$NGINX_URL:"$NGINX_PORT"/nginx_status/" |awk '/Active/ {print $NF}'
}
nginx_reading(){
/usr/bin/curl -s "http://$NGINX_URL:"$NGINX_PORT"/nginx_status/" |awk '/Reading/ {print $2}'
}
nginx_writing(){
/usr/bin/curl -s "http://$NGINX_URL:"$NGINX_PORT"/nginx_status/" |awk '/Writing/ {print $4}'
}
nginx_waiting(){
/usr/bin/curl -s "http://$NGINX_URL:"$NGINX_PORT"/nginx_status/" |awk '/Waiting/ {print $6}'
}
nginx_accepts(){
/usr/bin/curl -s "http://$NGINX_URL:"$NGINX_PORT"/nginx_status/" |awk 'NR==3 {print $1}'
}
nginx_handled(){
/usr/bin/curl -s "http://$NGINX_URL:"$NGINX_PORT"/nginx_status/" |awk 'NR==3 {print $2}'
}
nginx_requests(){
/usr/bin/curl -s "http://$NGINX_URL:"$NGINX_PORT"/nginx_status/" |awk 'NR==3 {print $3}'
}
case $NGINX_COMMAND in
active)
nginx_active;
;;
reading)
nginx_reading;
;;
writing)
nginx_writing;
;;
waiting)
nginx_waiting;
;;
accepts)
nginx_accepts;
;;
handled)
nginx_handled;
;;
requests)
nginx_requests;
;;
*)
echo $"USAGE:$0 {active|reading|writing|waiting|accepts|handled|requests} url [port]"
esac

2. 我们来测试一把

[root@web01 scripts]# curl 10.0.0.7/nginx_status
Active connections: 1
server accepts handled requests
7 7 7
Reading: 0 Writing: 1 Waiting: 0
[root@web01 scripts]# sh nginx_status.sh handled 10.0.0.7
8
[root@web01 scripts]# sh nginx_status.sh active 10.0.0.7
1
[root@web01 scripts]# sh nginx_status.sh requests 10.0.0.7
10
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Ngnix状态跟踪指标解析：
 active connections >> 对后端发起的活动连接数;
 server accepts handled requests >> nginx 总共处理了[accepts]个连接, 成功创建[handled]次握手,总共处理了[requests]个请求
 reading >> nginx 读取到客户端的Header信息数;
 writing >> nginx 返回给客户端的Header信息数;
 waiting >> 开启 keep-alive 的情况下，这个值等于 active – (reading + writing)，意思就是Nginx说已经处理完正在等候下一次请求指令的驻留连接;

转载于:https://blog.51cto.com/816885/2355016