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；
- 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 Bash Copy 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 Bash Copy 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;
