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nginx状态监控

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Jun 07, 2016 pm 03:10 PM

nginxCheckstatemonitorpass

nginx 状态监控通过查看Nginx的并发连接，我们可以更清除的知道网站的负载情况。Nginx并发查看有两种方法（之所以这么说，是因为笔者只知道两种），一种是通过web界面，一种是通过命令，web查看要比命令查看显示的结果精确一些。下面介绍这两种查看方法 No

nginx状态监控

通过查看Nginx的并发连接，我们可以更清除的知道网站的负载情况。Nginx并发查看有两种方法（之所以这么说，是因为笔者只知道两种），一种是通过web界面，一种是通过命令，web查看要比命令查看显示的结果精确一些。下面介绍这两种查看方法

No1、通过浏览器查看
通过web界面查看时Nginx需要开启status模块，也就是安装Nginx时加上 –with-http_stub_status_module 然后配置Nginx.conf，在server点里面加入如下内容

<code>location /nginx_status { stub_status on; access_log off; allow 192.168.1.100;  访问IP deny all; }<br></code><p>配置完后重新启动Nginx后我们可以通过浏览器访问http://localhost/status 查看，如下图<br> <img src="/static/imghwm/default1.png" data-src="http://cdn.verydemo.com/upload/2013_04_05/13651301539440.jpg" class="lazy" onload="if(this.width>650) this.   style="max-width:90%" border="0" alt=""></p> <p>解析：<br> Active connections    //当前 Nginx 正处理的活动连接数。<br> server accepts handledrequests //总共处理了8 个连接 , 成功创建 8 次握手,总共处理了500个请求。<br> Reading //nginx 读取到客户端的 Header 信息数。<br> Writing //nginx 返回给客户端的 Header 信息数。<br> Waiting //开启 keep-alive 的情况下，这个值等于 active – (reading + writing)，意思就是 Nginx 已经处理完正在等候下一次请求指令的驻留连接<br> No2、通过命令查看<br> #netstat -n | awk ‘/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}’</p> <p></p><p>TIME_WAIT 17<br> ESTABLISHED 3254<br> LAST_ACK 236<br> FIN_WAIT_1 648<br> FIN_WAIT_2 581<br> CLOSING 7<br> CLOSE_WAIT 4916</p> <p>解析：<br> CLOSED  //无连接是活动的或正在进行<br> LISTEN  //服务器在等待进入呼叫<br> SYN_RECV  //一个连接请求已经到达，等待确认<br> SYN_SENT  //应用已经开始，打开一个连接<br> ESTABLISHED  //正常数据传输<strong>状态</strong>/当前并发连接数<br> FIN_WAIT1  //应用说它已经完成<br> FIN_WAIT2  //另一边已同意释放<br> ITMED_WAIT  //等待所有分组死掉<br> CLOSING  //两边同时尝试关闭<br> TIME_WAIT  //另一边已初始化一个释放<br> LAST_ACK  //等待所有分组死掉</p>

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