yum搭建nagios监控linux&&window及邮件报警
本文是小弟整合几位大神的文章，见笑@@
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Linux利用sendmail和fetion发送报警通知
nagios监控windows主机 && linux主机
CentOS 5/6.X 使用 EPEL YUM源：
实验环境：
两台64位的centos-6.6
一台window-server-2003
安装网络yum源：
centos5.x--32位 [root@centos-server ~]# wget http://mirrors.yun-idc.com/epel/5/i386/epel-release-5-4.noarch.rpm centos5.x--64位 [root@centos-server ~]# wget http://mirrors.hust.edu.cn/epel//5/x86_64/epel-release-5-4.noarch.rpm centos6.x--32位 [root@centos-server ~]# wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm centos6.x--64位 [root@centos-server ~]# wget http://mirrors.hust.edu.cn/epel//6/x86_64/epel-release-6-8.noarch.rpm [root@centos-server ~]# rpm -ivh epel-release-6-8.noarch.rpm
搭建nagios监控服务器：
yum install httpd php* openssl openssl-devel nagios nagios-plugins* setenforce 0 iptables -I INPUT -p tcp --dport 80 -j ACCEPT 增加httpd的访问验证 [root@centos-server ~]# htpasswd -c /etc/nagios/htpasswd nagiosadmin New password: Re-type new password: Adding password for user nagiosadmin 注意nagios的默认用户就是nagiosadmin，如果你使用的不是此用户，需要修改以下项目 [root@centos-server objects]# cat /etc/nagios/cgi.cfg |grep nagiosadmin authorized_for_system_information=nagiosadmin authorized_for_configuration_information=nagiosadmin authorized_for_system_commands=nagiosadmin authorized_for_all_services=nagiosadmin authorized_for_all_hosts=nagiosadmin authorized_for_all_service_commands=nagiosadmin authorized_for_all_host_commands=nagiosadmin 快速修改命令 [root@centos-server ~]# sed -i 's/nagiosadmin/dragon/g' /etc/nagios/cgi.cfg 通过httpd访问nagios的web文件 [root@centos-server objects]# cat >> /etc/httpd/conf/httpd.conf <<END scriptAlias /nagios/cgi-bin "/usr/lib64/nagios/cgi-bin/" <Directory "/usr/lib64/nagios/cgi-bin/"> AllowOverride AuthConfig Options ExecCGI Order allow,deny Allow from all AuthUserFile /etc/nagios/htpasswd </Directory> Alias /nagios /usr/share/nagios/html/ <Directory "/usr/share/nagios/html/"> Options None AllowOverride AuthConfig Order allow,deny Allow from all AuthUserFile /etc/nagios/htpasswd </Directory> END
定义监控LINUX文件：
[root@centos-server objects]# mkdir /etc/nagios/objects/server
[root@centos-server objects]# vim /etc/nagios/nagios.cfg
cfg_dir=/usr/local/nagios/etc/servers
[root@centos-server objects]# vim /etc/nagios/objects/server/192.168.150.143.cfg
define host{
use linux-server
host_name 192.168.150.143
alias linux
address 192.168.150.143
}
define service{
use generic-service
host_name 192.168.150.143
service_description Check Swap
check_command check_nrpe!check_swap
}
define service{
use generic-service
host_name 192.168.150.143
service_description total
check_command check_nrpe!check_total_procs
}
define service{
use generic-service
host_name 192.168.150.143
service_description check_load
check_command check_nrpe!check_load
}
define service{
use generic-service
host_name 192.168.150.143
service_description check_tcp_3306
check_command check_tcp!3306
}
define service{
use generic-service
host_name 192.168.150.143
service_description check_users
check_command check_nrpe!check_users
}
define service{
use generic-service
host_name 192.168.150.143
service_description check_MySQL
check_command check_nrpe!check_mysql
}
define service{
use generic-service
host_name 192.168.150.143
service_description check_http 192.168.150.143/index.html
check_command check_http!'-u /index.html'
}
define service{
use generic-service
host_name 192.168.150.143
service_description check_disk
check_command check_nrpe!check_sda1
}
在commonds.cfg中添加check_nrpe的命令
[root@centos-server objects]# vim /etc/nagios/objects/commands.cfg
define command{
command_name check_nrpe
command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
}配置linux客户端：
[root@centos-server ~]# yum install nagios-plugins* openssl-devel openssl mysql-server [root@centos-server ~]# cat /etc/nrpe.d/nrpe only_from=127.0.0.1 192.168.150.139 [root@centos-server objects]# vim /etc/nagios/nrpe.cfg 添加nagios监控端的ip allowed_hosts=127.0.0.1,192.168.150.139 添加以下内容 command[check_users]=/usr/lib64/nagios/plugins/check_users -w 5 -c 10 command[check_load]=/usr/lib64/nagios/plugins/check_load -w 15,10,5 -c 30,25,20 command[check_sda1]=/usr/lib64/nagios/plugins/check_disk -w 20% -c 10% -p /dev/sda1 command[check_zombie_procs]=/usr/lib64/nagios/plugins/check_procs -w 5 -c 10 -s Z command[check_total_procs]=/usr/lib64/nagios/plugins/check_procs -w 150 -c 200 command[check_mysql]=/usr/lib64/nagios/plugins/check_mysql -H 127.0.0.1 -ubbq -pqwe123 #此用户需要在mysql中添加 command[check_swap]=/usr/lib64/nagios/plugins/check_swap -w 20% -c 10%
通过yum安装的nagios监控插件还有很多，有需要用到的可以研究下：
两端重启服务：
service nagios restart service httpd restart service nrpe restart service xinetd restart [root@centos-server ~]# netstat -anl|grep 5666 tcp 0 0 0.0.0.0:5666 0.0.0.0:* LISTEN tcp 0 0 :::5666 :::* LISTEN 在nagios监控端测试被监控端nrpe联通： [root@centos-server ~]# /usr/lib64/nagios/plugins/check_nrpe -H 192.168.150.143 NRPE v2.15
监控window-server：
[root@centos-server objects]# vim /etc/nagios/objects/server/192.168.150.146.cfg
define host{
usewindows-server
host_name 192.168.150.146
alias my computer
address 192.168.150.146
}
define service{
use generic-service
host_name 192.168.150.146
service_description NSClient++ Version
check_command check_win!CLIENTVERSION
}
define service{
use generic-service
host_name 192.168.150.146
service_description Uptime
check_command check_win!UPTIME
}
define service{
use generic-service
host_name 192.168.150.146
service_description CPU Load
check_command check_win!CPULOAD!-l 5,80,90
}
define service{
use generic-service
host_name 192.168.150.146
service_description Memory Usage
check_command check_win!MEMUSE!-w 80 -c 90
}
define service{
use generic-service
host_name 192.168.150.146
service_description C:\ Drive Space
check_command check_win!USEDDISKSPACE!-l c -w 80 -c 90
}
define service{
use generic-service
host_name 192.168.150.146
service_description D:\ Drive Space
check_command check_win!USEDDISKSPACE!-l d -w 80 -c 90
}
define service{
use generic-service
host_name 192.168.150.146
service_description E:\ Drive Space
check_command check_win!USEDDISKSPACE!-l e -w 80 -c 90
}
define service{
use generic-service
host_name 192.168.150.146
service_description Explorer
check_command check_win!PROCSTATE!-d SHOWALL -l Explorer.exe
}
[root@centos-server objects]# vim /etc/nagios/objects/commands.cfg
define command{
command_name check_win
command_line $USER1$/check_nt -H "$HOSTADDRESS$" -p 12489 -s dianyi123 -v $ARG1$ $ARG2$
}测试配置文件：
[root@centos-server objects]# /usr/sbin/nagios -v /etc/nagios/nagios.cfg Error: Could not find any hostgroup matching 'windows-servers' (config file '/etc/nagios/objects/server/192.168.150.146.cfg', starting on line 1) #这里我遇到这个错误了，把/etc/nagios/objects/templates.cfg 里window-server模版主机中以下这项注释就可以了 #hostgroups windows-servers ; 重启以下服务 [root@centos-server objects]# service nagios restart
配置window安装NSClient++：
1.
2.
3.
看到监控结果：
邮件报警设置：
引用郑彦生的原文
1、停止系统自带的sendmail服务
# /etc/init.d/postfix stop
2、安装sendmail和mailx
# yum -y install sendmail mailx
3、修改sendmail配置文件
# cp /etc/mail.rc /etc/mail.rc.bak
# cat >> /etc/mail.rc << EOF
set from=13260071987@139.com smtp=smtp.139.com
set smtp-auth-user=13260071987@139.com smtp-auth-password=yi15093547036 smtp-auth=login
EOF
4、重新启动sendmail服务
# service sendmail restart
5.修改联系人
[root@centos-server objects]# vim /etc/nagios/objects/contacts.cfg
define contact{
contact_name nagiosadmin
use generic-contact
alias Nagios Admin
email 18507656225@139.com
}查看邮件：
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