Nagios监控nginx服务具体过程

1在nginx 服务器上安装nrpe客户端：

Nginx的服务须要监控起来。不然万一down了而不及时修复，会影响web应用。例如以下web应用上面启动的nginx后台进程
[root@lb-net-2 ~]# ps aux|grep nginx
nobody   15294  0.0  0.0  22432  3464 ?        S    Jul03   0:05 nginx: worker process      
nobody   15295  0.0  0.0  22432  3480 ?        S    Jul03   0:05 nginx: worker process      
......      
nobody   15316  0.0  0.0  22432  3468 ?

       S    Jul03   0:05 nginx: worker process      
nobody   15317  0.0  0.0  22432  3480 ?        S    Jul03   0:05 nginx: worker process      
root     16260  0.0  0.0  20584  1684 ?        Ss   Jun18   0:00 nginx: master process /usr/local/nginx/sbin/nginx
root     21211  0.0  0.0 103252   860 pts/1    S+   17:50   0:00 grep nginx

1.1，rpm方式安装nrpe客户端

下载地址：http://download.csdn.net/detail/mchdba/7493875

[root@localhost nagios]# ll

总计 768

-rw-r--r-- 1 root root 713389 12-16 12:08 nagios-plugins-1.4.11-1.x86_64.rpm

-rw-r--r-- 1 root root  32706 12-16 12:09 nrpe-2.12-1.x86_64.rpm

-rw-r--r-- 1 root root  18997 12-16 12:08 nrpe-plugin-2.12-1.x86_64.rpm

[root@localhost nagios]# rpm -ivh *.rpm --nodeps  --force

 

1.2 在配置文件最末尾，加入配置信息以及监控主机服务器ip地址

[root@ localhost nagios]# vim /etc/nagios/nrpe.cfg

# add by tim on 2014-06-11

command[check_users]=/usr/local/nagios/libexec/check_users -w 8 -c 15

command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,5 -c 30,25,20

command[check_sda1]=/usr/local/nagios/libexec/check_disk -w 20% -c 10% -p /dev/sda

command[check_zombie_procs]=/usr/local/nagios/libexec/check_procs -w 5 -c 10 -s Z

#command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 50 -c 80

command[check_total_procs]=/usr/local/nagios/libexec/check_procs -w 750 -c 800

command[check-host-alive]=/usr/local/nagios/libexec/check_ping -H 10.xx.3.29 -w 3000.0,80% -c 5000.0,100% -p 5

allowed_hosts = 127.0.0.1,10.xx.3.41

check下命令是否生效：

[root@web-9 nrpe-2.15]# /usr/local/nagios/libexec/check_users -w 8 -c 15

USERS OK - 2 users currently logged in |users=2;8;15;0

[root@web-9 nrpe-2.15]#

看到已经USERS OK -….命令已经生效。

 

1.3 启动nrpe报错例如以下：

[root@web-9 ~]# service nrpe restart

Shutting down nrpe:                                        [失败]

Starting nrpe: /usr/sbin/nrpe: error while loading shared libraries: libssl.so.6: cannot open shared object file: No such file or directory

                                                           [失败]

[root@web-9 ~]#

[root@db-m2-slave-1 nagios_client]# service nrpe start

Starting nrpe: /usr/sbin/nrpe: error while loading shared libraries: libssl.so.6: cannot open shared object file: No such file or directory

                                                           [失败]

[root@db-m2-slave-1 nagios_client]#

建立连接

[root@db-m2-slave-1 nagios_client]# ln -s /usr/lib64/libssl.so /usr/lib64/libssl.so.6

 (假设没有libssl.so，就採用别的libssl.so.10来做软连接，ln -s /usr/lib64/libssl.so.10 /usr/lib64/libssl.so.6)

[root@db-m2-slave-1 nagios_client]#

再又一次启动例如以下：

[root@db-m2-slave-1 nagios_client]# service nrpe start

Starting nrpe: /usr/sbin/nrpe: error while loading shared libraries: libcrypto.so.6: cannot open shared object file: No such file or directory

                                                           [失败]

[root@web-10 ~]# ll /usr/lib64/libcrypto.so

lrwxrwxrwx. 1 root root 18 10月 13 2013 /usr/lib64/libcrypto.so -> libcrypto.so.1.0.0

[root@db-m2-slave-1 nagios_client]#

再建链接：
[root@db-m2-slave-1 nagios_client]# ln -s /usr/lib64/libcrypto.so /usr/lib64/libcrypto.so.6

(或者假设没有libcrypto.so，就採用libcrypto.so.10做软连接， ln -s /usr/lib64/libcrypto.so.10 /usr/lib64/libcrypto.so.6)

[root@db-m2-slave-1 nagios_client]# service nrpe start

Starting nrpe:                                             [确定]

[root@db-m2-slave-1 nagios_client]#

 

1.4 检測下nrpe是否正常执行：

去nagios服务器端check下

[root@cache-2 ~]#  /usr/local/nagios/libexec/check_nrpe -H 10.xx.3.xx

NRPE v2.12

[root@cache-2 ~]#

看到返回NRPE v2.15表示已经连接成功，客户端的nrpe服务已经监控完毕。

 

2，比較简单的通过check_http的方式监控

能够在/etc/nagios/nrpe.cfg里面採用check_http的方式来获取nginx是否执行：

(1)     编辑nrpe.cfg

Vim /etc/nagios/nrpe.cfg

command[check_nginx_status]=/usr/lib/nagios/plugins/check_http -I localhost -p 80 -u /nginx_status -e 200 -w 3 -c 10

(2)     重新启动nrpe服务

[root@lb-net-2 ~]# service nrpe restart

Shutting down nrpe:                                        [确定]

Starting nrpe:                                             [确定]

[root@lb-net-2 ~]#

(3)     在nagios服务器端check。成功。

[root@cache-2 ~]# /usr/local/nagios/libexec/check_nrpe -H10.xx.1.22 -c check_nginx_status

HTTP OK HTTP/1.1 200 OK - 254 bytes in 0.002 seconds |time=0.002031s;3.000000;10.000000;0.000000 size=254B;;;0

(4)     在services.cfg里面加入check_nginx_status服务

define service{

        host_name               lb-net-2

        service_description     check_nginx_status

        check_command           check_nrpe!check_nginx_status

        max_check_attempts      5

        normal_check_interval   3

        retry_check_interval    2

        check_period            24x7

        notification_interval   10

        notification_period     24x7

        notification_options    w,u,c,r

        contact_groups          opsweb

        }

(5)     在command.cfg加入check_nginx_status服务

define command{

        command_name    check_nginx_status

        command_line    $USER1$/check_nginx_status -I $HOSTADDRESS$ -w $Warning$ -c $Cri$

        }

(6)     又一次载入nagios

[root@cache-2 objects]# service nagios reload

Running configuration check...

Reloading nagios configuration...

done

[root@cache-2 objects]#

(7)     查看界面的nginx监控服务。例如以下所看到的：

 Nagios监控nginx服务具体过程

3 编写脚本来监控nginx服务

3.1 调试具体经过

[root@lb-net-2 run]# find / -name nginx.pid

/usr/local/nginx/logs/nginx.pid

[root@lb-net-2 run]# /usr/lib/nagios/plugins/check_nginxstatus -H localhost -P 80 -p /usr/local/nginx/logs/ -n /usr/local/nginx/logs/nginx.pid -s nginx_status -o /tmp/ -w 1500 -c 2000

expr: 參数数目错误

expr: 语法错误

(standard_in) 1: syntax error

/usr/lib/nagios/plugins/check_nginxstatus: line 258: [: : integer expression expected

/usr/lib/nagios/plugins/check_nginxstatus: line 262: [: : integer expression expected

OK - nginx is running.  requests per second,  connections per second ( requests per connection) | 'reqpsec'= 'conpsec'= 'conpreq'= ]

 

去查看262行。将逻辑运算符  "-a" 改成 "&&"

[root@lb-net-2 run]# vim /usr/lib/nagios/plugins/check_nginxstatus

[root@lb-net-2 run]# /usr/lib/nagios/plugins/check_nginxstatus -H localhost -P 80 -p /usr/local/nginx/logs/ -n /usr/local/nginx/logs/nginx.pid -s nginx_status -o /tmp/ -w 1500 -c 2000

expr: 參数数目错误

expr: 语法错误

(standard_in) 1: syntax error

/usr/lib/nagios/plugins/check_nginxstatus: line 258: [: missing `]'

/usr/lib/nagios/plugins/check_nginxstatus: line 262: [: : integer expression expected

OK - nginx is running.  requests per second,  connections per second ( requests per connection) | 'reqpsec'= 'conpsec'= 'conpreq'= ]

[root@lb-net-2 run]#

看到已经OK了。再改动文件。

 

[root@lb-net-2 run]# vim /usr/lib/nagios/plugins/check_nginxstatus

[root@lb-net-2 run]#

[root@lb-net-2 run]# /usr/lib/nagios/plugins/check_nginxstatus -H localhost -P 80 -p /usr/local/nginx/logs/ -n /usr/local/nginx/logs/nginx.pid -s nginx_status -o /tmp/ -w 1500 -c 2000

expr: 參数数目错误

expr: 语法错误

(standard_in) 1: syntax error

/usr/lib/nagios/plugins/check_nginxstatus: line 258: [: missing `]'

OK - nginx is running.  requests per second,  connections per second ( requests per connection) | 'reqpsec'= 'conpsec'= 'conpreq'= ]

[root@lb-net-2 run]#

将[]改成使用"[[]]"。 就可以！

 

[root@lb-net-2 run]# vim /usr/lib/nagios/plugins/check_nginxstatus

[root@lb-net-2 run]#

[root@lb-net-2 run]#

[root@lb-net-2 run]# /usr/lib/nagios/plugins/check_nginxstatus -H localhost -P 80 -p /usr/local/nginx/logs/ -n /usr/local/nginx/logs/nginx.pid -s nginx_status -o /tmp/ -w 1500 -c 2000

expr: 參数数目错误

expr: 语法错误

(standard_in) 1: syntax error

OK - nginx is running.  requests per second,  connections per second ( requests per connection) | 'reqpsec'= 'conpsec'= 'conpreq'= ]

[root@lb-net-2 run]#

 

凝视掉#reqpcon=`echo "scale=2; $reqpsec / $conpsec" | bc -l`之后。就不会报(standard_in) 1: syntax error错误，例如以下所看到的：

[root@lb-net-2 run]# /usr/lib/nagios/plugins/check_nginxstatus -H localhost -P 80 -p /usr/local/nginx/logs/ -s nginx_status -n nginx.pid -w 15000 -c 20000

expr: 參数数目错误

expr: 语法错误

OK - nginx is running.  requests per second,  connections per second ( requests per connection) | 'reqpsec'= 'conpsec'= 'conpreq'= ]

[root@lb-net-2 run]#

 

凝视掉# reqpsec=`expr $tmp2_reqpsec - $tmp1_reqpsec` 就不会再报 expr: 參数数目错误，例如以下所看到的：

报错：

[root@lb-net-2 run]# /usr/lib/nagios/plugins/check_nginxstatus -H localhost -P 80 -p /usr/local/nginx/logs/ -s nginx_status -n nginx.pid -w 15000 -c 20000

expr: 语法错误

OK - nginx is running.  requests per second,  connections per second ( requests per connection) | 'reqpsec'= 'conpsec'= 'conpreq'= ]

 

再次凝视掉 #reqpcon=`echo "scale=2; $reqpsec / $conpsec" | bc -l` 后。执行不会报expr: 语法错误。例如以下所看到的：

[root@lb-net-2 run]# /usr/lib/nagios/plugins/check_nginxstatus -H localhost -P 80 -p /usr/local/nginx/logs/ -s nginx_status -n nginx.pid -w 15000 -c 20000

OK - nginx is running.  requests per second,  connections per second ( requests per connection) | 'reqpsec'= 'conpsec'= 'conpreq'= ]

[root@lb-net-2 run]#

 

看到这里发现'reqpsec'= 'conpsec'= 'conpreq'=都没有值，可是nginx又是在启动执行着，问题出在哪里？经过排查，原来是nginx_status服务没有启动。须要在/usr/local/nginx/conf/nginx.conf配置文件中面加入例如以下配置：

# 加入pid參数

pid        logs/nginx.pid;

#charset koi8-r;

        access_log  logs/host.access.log  main;

        location /nginx_status {

                stub_status on;

                access_log   off;

                                     deny all;

         }

 

然后又一次载入nginx，看到新的nginx-status文件是生成了。可是文件内容为空，例如以下所看到的：

[root@lb-net-2 logs]# ll /tmp/nginx*

-rw-r--r--. 1 root root 0 7月   3 15:06 /tmp/nginx-status.1

[root@lb-net-2 logs]#

 

去查看ngins后台日志

[root@lb-net-2 logs]# cd /usr/local/nginx/

[root@lb-net-2 logs]# tail -n 300 error.log

……

2014/07/03 15:05:47 [error] 4285#0: *1851293 access forbidden by rule, client: 127.0.0.1, server: localhost, request: "GET /nginx_status HTTP/1.0", host: "localhost"

2014/07/03 15:05:48 [error] 4285#0: *1851294 access forbidden by rule, client: 127.0.0.1, server: localhost, request: "GET /nginx_status HTTP/1.0", host: "localhost"

2014/07/03 15:06:12 [error] 4282#0: *1851362 access forbidden by rule, client: 127.0.0.1, server: localhost, request: "GET /nginx_status HTTP/1.0", host: "localhost"

2014/07/03 15:06:13 [error] 4282#0: *1851363 access forbidden by rule, client: 127.0.0.1, server: localhost, request: "GET /nginx_status HTTP/1.0", host: "localhost"

2014/07/03 15:06:55 [error] 4285#0: *1851509 access forbidden by rule, client: 127.0.0.1, server: localhost, request: "GET /nginx_status HTTP/1.0", host: "localhost"

2014/07/03 15:06:56 [error] 4285#0: *1851519 access forbidden by rule, client: 127.0.0.1, server: localhost, request: "GET /nginx_status HTTP/1.0", host: "localhost"

 

查看nginx编译參数

[root@lb-net-2 logs]# /usr/local/nginx/sbin/nginx -V

nginx version: nginx/1.4.2

built by gcc 4.4.7 20120313 (Red Hat 4.4.7-3) (GCC)

configure arguments: --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_realip_module

 

证明白实是载入了stub_status插件，之后去改动配置文件。凝视掉deny all;又一次载入nginx。

[root@lb-net-2 logs]# vim /usr/local/nginx/conf/nginx.conf

#deny all;

[root@lb-net-2 logs]# service nginx reload

reload nginx

[root@lb-net-2 logs]#

[root@lb-net-2 logs]# ll /tmp/nginx*

ls: 无法訪问/tmp/nginx*: 没有那个文件或文件夹

[root@lb-net-2 logs]#

还是没有看到/tmp/nginx-status.1状态文件生成。因为nagios下监控nginx的脚本是从nginx-status.1获取数据，假设没有这个文件，没有办法获取数据。

 

继续google，”nginx stub_status没有生成nginx-status.1”文件。看到有人说仅仅要配置好了这个状态文件有没有无所谓，我就试着直接执行脚本看看是否能生效。

[root@lb-net-2 logs]# ll /tmp/nginx*

ls: 无法訪问/tmp/nginx*: 没有那个文件或文件夹

[root@lb-net-2 logs]# /root/check_nginx2.sh  -H localhost -P 80 -p /usr/local/nginx/logs/ -n nginx.pid -s nginx_status -w 15000 -c 20000

OK - nginx is running. 1 requests per second, 2 connections per second (.50 requests per connection) | 'reqpsec'=1 'conpsec'=2 'conpreq'=.50 ]

[root@lb-net-2 logs]#

看到'reqpsec'=1 'conpsec'=2 'conpreq'=.50里面有数据了，再去check下文件有没有生成，例如以下所看到的：

[root@lb-net-2 logs]# ll /tmp/nginx*

ls: 无法訪问/tmp/nginx*: 没有那个文件或文件夹

[root@lb-net-2 logs]#

还是没有文件生成，可是check已经有数据了，证明不一定要拘泥于是否在/tmp/文件夹下是否有nginx-status.1文件。

通过脚本分析例如以下：

[root@lb-net-2 logs]# vim /usr/lib/nagios/plugins/check_nginxstatus

180 get_status() {

181     if [ "$secure" = 1 ]

182     then

183         wget_opts="-O- -q -t 3 -T 3 --no-check-certificate"

184         out1=`wget ${wget_opts} http://${hostname}:${port}/${status_page}`

185         sleep 1

186         out2=`wget ${wget_opts} http://${hostname}:${port}/${status_page}`

187     else

188         wget_opts="-O- -q -t 3 -T 3"

189         out1=`wget ${wget_opts} http://${hostname}:${port}/${status_page}`

190         sleep 1

191         out2=`wget ${wget_opts} http://${hostname}:${port}/${status_page}`

192     fi

193

194     if [ -z "$out1" -o -z "$out2" ]

195     then

196         echo "UNKNOWN - Local copy/copies of $status_page is empty."

197         exit $ST_UK

198     fi

199 }

 

是通过訪问`wget -O- -q -t 3 -T 3 --no-check-certificate http://10.xx.xx.xx:80/nginx_status`这个链接来获取status的数据记录的，而不是去载入/tmp/nginx-status.1文件来获取数据的。

直接訪问 http://10.xx.xx.xx:80/nginx_status 地址就能获取nginx执行数据，例如以下图所看到的：
Nagios监控nginx服务具体过程

在nagios服务器上check下。报错：

[root@cache-2 ~]# /usr/local/nagios/libexec/check_nrpe -H10.xx.xx.xx -c check_nginx_status

UNKNOWN - Local copy/copies of nginx_status is empty.

[root@cache-2 ~]#

检查监控脚本，搜索 ‘Local copy/copies of nginx_status is empty.’在第197行，有例如以下代码：

195     if [ -z "$out1" -o -z "$out2" ]

196     then

197         echo "UNKNOWN - Local copy/copies of $status_page is empty."

198         exit $ST_UK

199     fi

看出是因为if [ -z "$out1" -o -z "$out2" ]这个推断生效。导致监控脚本执行到这里就exit了。继续调试。发现用nagios服务器调用脚本的时候。执行到下面第190行到第192行

out1=`/usr/bin/wget ${wget_opts} http://${hostname}:${port}/${status_page}`

        sleep 1

        out2=`/usr/bin/wget ${wget_opts} http://${hostname}:${port}/${status_page}`

的时候。out1为空，out2也为空，所以在后面的if [ -z "$out1" -o -z "$out2" ]推断通过报出信息为：UNKNOWN - Local copy/copies of $status_page is empty. 然后直接exit。

 

说明：因为nginx是要调用wget命令来获取nginx_status状态的，而wget命令是仅仅能以root用户来执行的, 所以须要将nagios用户设置成能够无需password直接su成root，这样就能以nagios用户执行命令sudo /usr/lib/nagios/plugins/check_nginxstatus 。在centos系统中。无法直接调用sudo命令，须要改动/etc/sudoers, 找到 #Defaults requiretty 并取消凝视，另外新增一行。表示nagios用户不须要登陆终端就能够调用命令。例如以下所看到的：

Defaults    requiretty

Defaults:nagios    !requiretty

#加入nagios 请求sudo，同意特定指令时（可跟參数），不须要password（如）。

nagios ALL=(ALL) NOPASSWD: ALL

改动完后。再check，数据出来了：

[root@cache-2 ~]# /usr/local/nagios/libexec/check_nrpe -H10.xx.xx.xx -c check_nginx_status

OK - nginx is running. 1 requests per second, 1 connections per second (1.00 requests per connection) | 'reqpsec'=1 'conpsec'=1 'conpreq'=1.00 ]

[root@cache-2 ~]#

 

3.2  share下check_nginxstatus脚本

 

  • #!/bin/sh

  • PROGNAME=`basename $0`
  • VERSION=\\\"Version 1.1,\\\"
  • AUTHOR=\\\"tim man\\\"

  • ST_OK=0
  • ST_WR=1
  • ST_CR=2
  • ST_UK=3
  • hostname=\\\"localhost\\\"
  • port=80
  • path_pid=/var/run
  • name_pid=\\\"nginx.pid\\\"
  • status_page=\\\"nginx_status\\\"
  • pid_check=1
  • secure=0

  • print_version() {
  •     echo \\\"$VERSION $AUTHOR\\\"
  • }

  • print_help() {
  •     print_version $PROGNAME $VERSION
  •     echo \\\"\\\"
  •     echo \\\"$PROGNAME is a Nagios plugin to check whether nginx is running.\\\"
  •     echo \\\"It also parses the nginx\\\'s status page to get requests and\\\"
  •     echo \\\"connections per second as well as requests per connection. You\\\"
  •     echo \\\"may have to alter your nginx configuration so that the plugin\\\"
  •     echo \\\"can access the server\\\'s status page.\\\"
  •     echo \\\"The plugin is highly configurable for this reason. See below for\\\"
  •     echo \\\"available options.\\\"
  •     echo \\\"\\\"
  •     echo \\\"$PROGNAME -H localhost -P 80 -p /var/run -n nginx.pid \\\"
  •     echo \\\" -s nginx_statut -o /tmp [-w INT] [-c INT] [-S] [-N]\\\"
  •     echo \\\"\\\"
  •     echo \\\"Options:\\\"
  •     echo \\\" -H/--hostname)\\\"
  •     echo \\\" Defines the hostname. Default is: localhost\\\"
  •     echo \\\" -P/--port)\\\"
  •     echo \\\" Defines the port. Default is: 80\\\"
  •     echo \\\" -p/--path-pid)\\\"
  •     echo \\\" Path where nginx\\\'s pid file is being stored. You might need\\\"
  •     echo \\\" to alter this path according to your distribution. Default\\\"
  •     echo \\\" is: /var/run\\\"
  •     echo \\\" -n/--name_pid)\\\"
  •     echo \\\" Name of the pid file. Default is: nginx.pid\\\"
  •     echo \\\" -N/--no-pid-check)\\\"
  •     echo \\\" Turn this on, if you don\\\'t want to check for a pid file\\\"
  •     echo \\\" whether nginx is running, e.g. when you\\\'re checking a\\\"
  •     echo \\\" remote server. Default is: off\\\"
  •     echo \\\" -s/--status-page)\\\"
  •     echo \\\" Name of the server\\\'s status page defined in the location\\\"
  •     echo \\\" directive of your nginx configuration. Default is:\\\"
  •     echo \\\" nginx_status\\\"
  •     echo \\\" -S/--secure)\\\"
  •     echo \\\" In case your server is only reachable via SSL, use this\\\"
  •     echo \\\" this switch to use HTTPS instead of HTTP. Default is: off\\\"
  •     echo \\\" -w/--warning)\\\"
  •     echo \\\" Sets a warning level for requests per second. Default is: off\\\"
  •     echo \\\" -c/--critical)\\\"
  •     echo \\\" Sets a critical level for requests per second. Default is:\\\"
  •     echo \\\" off\\\"
  •     exit $ST_UK
  • }

  • while test -n \\\"$1\\\"; do
  •     case \\\"$1\\\" in
  •         -help|-h)
  •             print_help
  •             exit $ST_UK
  •             ;;
  •         --version|-v)
  •             print_version $PROGNAME $VERSION
  •             exit $ST_UK
  •             ;;
  •         --hostname|-H)
  •             hostname=$2
  •             shift
  •             ;;
  •         --port|-P)
  •             port=$2
  •             shift
  •             ;;
  •         --path-pid|-p)
  •             path_pid=$2
  •             shift
  •             ;;
  •         --name-pid|-n)
  •             name_pid=$2
  •             shift
  •             ;;
  •         --no-pid-check|-N)
  •             pid_check=0
  •             ;;
  •         --status-page|-s)
  •             status_page=$2
  •             shift
  •             ;;
  •         --secure|-S)
  •             secure=1
  •             ;;
  •         --warning|-w)
  •             warning=$2
  •             shift
  •             ;;
  •         --critical|-c)
  •             critical=$2
  •             shift
  •             ;;
  •         *)
  •             echo \\\"Unknown argument: $1\\\"
  •             print_help
  •             exit $ST_UK
  •             ;;
  •         esac
  •     shift
  • done

  • get_wcdiff() {
  •     if [ ! -z \\\"$warning\\\" -a ! -z \\\"$critical\\\" ]
  •     then
  •         wclvls=1

  •         if [ ${warning} -ge ${critical} ]
  •         then
  •             wcdiff=1
  •         fi
  •     elif [ ! -z \\\"$warning\\\" -a -z \\\"$critical\\\" ]
  •     then
  •         wcdiff=2
  •     elif [ -z \\\"$warning\\\" -a ! -z \\\"$critical\\\" ]
  •     then
  •         wcdiff=3
  •     fi
  • }

  • val_wcdiff() {
  •     if [ \\\"$wcdiff\\\" = 1 ]
  •     then
  •         echo \\\"Please adjust your warning/critical thresholds. The warning \\\\
  • must be lower than the critical level!\\\"
  •         exit $ST_UK
  •     elif [ \\\"$wcdiff\\\" = 2 ]
  •     then
  •         echo \\\"Please also set a critical value when you want to use \\\\
  • warning/critical thresholds!\\\"
  •         exit $ST_UK
  •     elif [ \\\"$wcdiff\\\" = 3 ]
  •     then
  •         echo \\\"Please also set a warning value when you want to use \\\\
  • warning/critical thresholds!\\\"
  •         exit $ST_UK
  •     fi
  • }

  • check_pid() {
  •     if [ -f \\\"$path_pid/$name_pid\\\" ]
  •     then
  •         retval=0
  •     else
  •         retval=1
  •     fi
  • }

  • get_status() {
  •     if [ \\\"$secure\\\" = 1 ]
  •     then
  •         wget_opts=\\\"-O- -q -t 3 -T 3 --no-check-certificate\\\"
  •         #out1=`/usr/bin/wget ${wget_opts} http://${hostname}:${port}/${status_page}`
  •        out1=`/usr/bin/wget -O- -q -t 3 -T 3 http://localhost:80/nginx_status`
  •      sleep 1
  •     out2=`/usr/bin/wget -O- -q -t 3 -T 3 http://localhost:80/nginx_status`
  •     else 
  •         wget_opts=\\\"-O- -q -t 3 -T 3\\\"
  •     out1=`/usr/bin/wget -O- -q -t 3 -T 3 http://localhost:80/nginx_status` 
  •     sleep 1
  •         out2=`/usr/bin/wget -O- -q -t 3 -T 3 http://localhost:80/nginx_status`
  •     fi
  •     if [ -z \\\"$out1\\\" -o -z \\\"$out2\\\" ]
  •     then
  •         echo \\\"out1:$out1 out2:$out2, UNKNOWN - Local copy/copies of $status_page is empty.\\\"
  •     exit $ST_UK
  •     fi
  • }

  • get_vals() {
  •     tmp1_reqpsec=`echo ${out1}|awk \\\'{print $10}\\\'`
  •     tmp2_reqpsec=`echo ${out2}|awk \\\'{print $10}\\\'`
  •     reqpsec=`expr $tmp2_reqpsec - $tmp1_reqpsec`

  •     tmp1_conpsec=`echo ${out1}|awk \\\'{print $9}\\\'`
  •     tmp2_conpsec=`echo ${out2}|awk \\\'{print $9}\\\'`
  •     conpsec=`expr $tmp2_conpsec - $tmp1_conpsec`

  •     reqpcon=`echo \\\"scale=2; $reqpsec / $conpsec\\\" | bc -l`
  •     if [ \\\"$reqpcon\\\" = \\\".99\\\" ]
  •     then
  •         reqpcon=\\\"1.00\\\"
  •     fi
  • }

  • do_output() {
  •     output=\\\"nginx is running. $reqpsec requests per second, $conpsec connections per second ($reqpcon requests per connection)\\\"
  • }

  • do_perfdata() {
  •     perfdata=\\\"\\\'reqpsec\\\'=$reqpsec \\\'conpsec\\\'=$conpsec \\\'conpreq\\\'=$reqpcon\\\"
  • }

  • # Here we 
  • get_wcdiff
  • val_wcdiff

  • if [ ${pid_check} = 1 ]
  • then
  •     check_pid
  •     if [ \\\"$retval\\\" = 1 ]
  •     then
  •         echo \\\"There\\\'s no pid file for nginx. Is nginx running? Please also make sure whether your pid path and name is correct.\\\"
  •         exit $ST_CR
  •     fi
  • fi

  • get_status
  • get_vals
  • do_output
  • do_perfdata

  • if [[ -n \\\"$warning\\\" ]] && [[ -n \\\"$critical\\\" ]]
  • then
  •     if [[ \\\"$reqpsec\\\" -ge \\\"$warning\\\" ]] && [[ \\\"$reqpsec\\\" -lt \\\"$critical\\\" ]]
  •     then
  •         echo \\\"WARNING - ${output} | ${perfdata}\\\"
  •     exit $ST_WR
  •     elif [ \\\"$reqpsec\\\" -ge \\\"$critical\\\" ]
  •     then
  •         echo \\\"CRITICAL - ${output} | ${perfdata}\\\"
  •     exit $ST_CR
  •     else
  •         echo \\\"OK - ${output} | ${perfdata} ]\\\"
  •     exit $ST_OK
  •     fi
  • else
  •     echo \\\"OK - ${output} | ${perfdata}\\\"
  •     exit $ST_OK
  • fi



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