nagios安裝完成，打開/usr/local/nagios/etc/nagios.cfg去掉cfg_dir=/usr/local/nagios/etc/servers前面的#號，并創(chuàng)建/usr/local/nagios/etc/servers目錄（此目錄下放被監(jiān)控機的配置文件），重啟nagios服務service nagios restart /usr/local/nagios/etc/objects/commands.cfg? 定義監(jiān)控的命令,監(jiān)控每一項都必須先在此配置文件定義監(jiān)控命令
/usr/local/nagios/etc/objects/contacts.cfg 定義聯(lián)系人和聯(lián)系人組，比如聯(lián)系人naigosadmin，聯(lián)系人組admins，報警信息也在這里配置
/usr/local/nagios/etc/objects/timeperiods.cfg 定義時間
/usr/local/nagios/etc/objects/templates.cfg 放置監(jiān)控模板，可在監(jiān)控服務的時候引用這里面的模板，一般不用改動
/usr/local/nagios/etc/objects/localhost.cfg 如果你要監(jiān)控本機，那就在這里配置 /usr/local/nagios/etc/servers 放置被監(jiān)控機的配置文件，比如我監(jiān)控192.168.1.252的配置文件252.cfg就放這下面 監(jiān)控機：192.168.1.246 被監(jiān)控機：192.168.1.252，192.168.1.249 操作系統(tǒng)：RHEL5.4 一、監(jiān)控CPU先下載腳本所需模塊 wget http://cpan.wenzk.com/authors/id/T/TO/TONVOON/Nagios-Plugin-0.34.tar.gz
wget http://cpan.wenzk.com/authors/id/S/SF/SFINK/Math-Calc-Units-1.07.tar.gz
wget http://mirror.thekeelecentre.com/distfiles/Params-Validate-0.91.tar.gz
wget http://search.cpan.org/CPAN/authors/id/A/AB/ABIGAIL/Regexp-Common-2.122.tar.gz
wget http://search.cpan.org/CPAN/authors/id/K/KA/KASEI/Class-Accessor-0.31.tar.gz
wget http://search.cpan.org/CPAN/authors/id/A/AD/ADAMK/Config-Tiny-2.12.tar.gz
在被監(jiān)控機上（也可以監(jiān)控機上，就是監(jiān)控本機）解壓后安裝步驟： perl Makefile.PL make make install 在被監(jiān)控機上/usr/local/nagios/etc/nrpe.cfg配置文件里添加 command[check_iostat]=/usr/local/nagios/libexec/check_iostat -w 5 -c 10 把腳本check_iostat（見附件）放到被監(jiān)控機的/usr/local/nagios/libexec/目錄下，并賦權限 chmod +x /usr/local/nagios/libexec/check_iostat Chown nagios:nagios /usr/local/nagios/libexec/check_iostat 測試：[root@Rs-02 libexec]# ./check_iostat -w 5 -c 10
IOSTAT OK - user 0.54 nice 0.01 sys 1.41 iowait 1.37 idle 0.00? | iowait=1.37%;; idle=0.00%;; user=0.54%;; nice=0.01%;; sys=1.41%;; 在監(jiān)控機/usr/local/nagios/etc/objects/commands.cfg里面添加 define command{
??????? command_name??? check_iostat
??????? command_line??? $USER1$/check_iostat -w $ARG1$ -c $ARG2$
??????? }
在監(jiān)控機/usr/local/nagios/etc/servers/252.cfg（被監(jiān)控機192.168.1.252的配置文件）里添加 define service{
??????? use???????????????????????????? generic-service
??????? host_name?????????????????????? 252
??????? service_description???????????? iostat
??????? check_command?????????????????? check_iostat!5!10
??????? }
然后檢查配置是否有誤 /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg 提示無誤后重啟服務service nagios restart 二、監(jiān)控nginx狀態(tài) 被監(jiān)控端nginx配置文件nginx.conf的虛擬主機添加 location /nginx_status {
??????????????????????? stub_status on;
??????????????????????? access_log?? off;
??????????????? }
把check_nginx（見附件）放到監(jiān)控端/usr/local/nagios/libexec/目錄下，并賦權限 chmod +x /usr/local/nagios/libexec/check_nginx Chown nagios:nagios /usr/local/nagios/libexec/check_nginx 測試：./check_nginx -H 192.168.1.252 -P 80 -p /usr/local/nginx/ -n nginx.pid -s nginx_status -o /tmp/ -w 15000 -c 20000
OK - nginx is running. 1 requests per second, 1 connections per second (1.00 requests per connection) | 'reqpsec'=1 'conpsec'=1 'conpreq'=1.00 ] /usr/local/nagios/etc/objects/commands.cfg添加 define command{
??????? command_name??? check_nginxstatus
??????? command_line??? $USER1$/check_nginx -H $ARG1$ -P $ARG2$ -p $ARG3$ -n $ARG4$ -o $ARG5$ -w $ARG6$ -c $ARG7$
??????? }
/usr/local/nagios/etc/servers/252.cfg添加 define service{
??????? use???????????????????????????? generic-service
??????? host_name?????????????????????? 252
??????? service_description???????????? nginx_status
??????? check_command?????????????????? check_nginxstatus!192.168.1.252!80!/usr/local/nginx!nginx.pid!nginx_status!/tmp!15000!20000
??????? }
重啟nagios服務 三、監(jiān)控網(wǎng)卡流量 被監(jiān)控機/usr/local/nagios/etc/nrpe.cfg里添加 command[check_iftraffic]=/usr/local/nagios/libexec/check_iftraffic -i eth0 -w 50 -c 100 -b 100 -u m 把check_iftraffic（見附件）放到被監(jiān)控機/usr/local/nagios/libexec/目錄下，并賦權限 chmod +x /usr/local/nagios/libexec/check_iftraffic Chown nagios:nagios /usr/local/nagios/libexec/check_iftraffic 監(jiān)控端/usr/local/nagios/etc/objects/commands.cfg添加 define command{
???????? command_name??? check_iftraffic
???????? command_line??? $USER1$/check_iftraffic -i $ARG1$ -w $ARG2$ -c $ARG3$ -b $ARG4$ -u $ARG5$
}
/usr/local/nagios/etc/servers/252.cfg添加 define service{
??????? use???????????????????????????? generic-service
??????? host_name?????????????????????? 252
??????? service_description???????????? iftraffic
??????? check_command?????????????????? check_nrpe!check_iftraffic!"eth0"!50!100!100!m
??????? }
重啟nagios服務 四、監(jiān)控Mysql主機 用plugin 產(chǎn)生的腳本 check_mysql監(jiān)控
需要被監(jiān)控機添加訪問
? 據(jù)庫授權：(登陸DB服務器，進行授權用戶名 liuyu,密碼123456 ? mysql> grant all privileges on *.* to liuyu@192.168.1.246?identified by '123456';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec) 監(jiān)控端/usr/local/nagios/etc/objects/commands.cfg添加 define command{
??????? command_name??? check_mysql
??????? command_line??? $USER1$/check_mysql -H $ARG1$ -P $ARG2$ -u $ARG3$ -p $ARG4$
??????? }
/usr/local/nagios/etc/servers/252.cfg添加 define service{
??????? use???????????????????????????? generic-service???????? ; Name of service template to use
??????? host_name?????????????????????? 252
??????? service_description???????????? mysql
??????? check_command?????????????????? check_mysql!192.168.1.252!3306!liuyu!123456
#?????? notifications_enabled?????????? 0??? 此項定義是否發(fā)送報警信息，0為關閉，1為開啟
??????? }
重啟nagios服務 監(jiān)控腳本在附件里

轉載于:https://blog.51cto.com/bizchen/340771

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