Nagios监控windows服务器 平台及所用组件, 监控服务器:redhat linux as5,nagios-3.0.5, nagios-plugins-1.4.11 被监控端:windows2003,nsclient++0.3.3 简单介绍Nagios是一款开源的免费网络监视工具，其功能强大，灵活性强。能有效监控Windows、Linux和Unix的主机状态，交换机路由器等网络设置，打印机等。本文档主要实现nagios监控windows主机，nagios监控windows系统有三种实现方式：SNMP、NSClient++、NRPE. 本文只介绍使用NSClient++方式来监控Windows,然后简单介绍一下nagios如何使用插件及自己编写插件参数. 1.Nagios的安装 1.安装基础支持套件nagios需要apache,gcc,glibc,gd库等套件才能运行. yum install httpd yum install gcc yum install glibc glibc-common yum install gd gd-devel 2.创建帐号及组/usr/sbin/useradd -m nagios passwd nagios /usr/sbin/groupadd nagcmd /usr/sbin/usermod -a -G nagcmd nagios /usr/sbin/usermod -a -G nagcmd daemon #daemon为运行apache的账号。 3.安装nagiostar -zxvf nagios-3.0.5.tar.gz cd nagios-3.0.5 ./configure --prefix=/usr/local/nagios --with-command-group=nagcmd --with-gd-lib=/usr/lib/ --with-gd-inc=/usr/include/ make all make install make install-init #在/etc/rc.d/init.d安装启动脚本 make install-config #在/usr/local/nagios/etc安装示例配置文件 make install-commandmode #配置目录权限 4.配置apache在alias模块<IfModule alias_module>添加如下行.(如果是rpm安装apache,将下面行写入到alias处) ScriptAlias /nagios/cgi-bin "/usr/local/nagios/sbin" <Directory "/usr/local/nagios/sbin"> # SSLRequireSSL Options ExecCGI AllowOverride None Order allow,deny Allow from all # Order deny,allow # Deny from all # Allow from 127.0.0.1 AuthName "Nagios Access" AuthType Basic AuthUserFile /usr/local/nagios/etc/htpasswd.users Require valid-user </Directory> Alias /nagios "/usr/local/nagios/share" <Directory "/usr/local/nagios/share"> # SSLRequireSSL Options None AllowOverride None Order allow,deny Allow from all # Order deny,allow # Deny from all # Allow from 127.0.0.1 AuthName "Nagios Access" AuthType Basic AuthUserFile /usr/local/nagios/etc/htpasswd.users Require valid-user </Directory> 创建apache目录验证文件并得启apache /usr/local/apache/bin/htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin New password: Re-type new password: Adding password for user nagiosadmin service httpd restart #重启apache 5.安装nagios-pluginsnagios-plugins是nagios官方提供的一套插件程序，nagios监控主机的功能其实都是通过执行插件程序来实现的. tar zxvf nagios-plugins-1.4.11.tar.gz cd nagios-plugins-1.4.11 ./configure --with-nagios-user=nagios --with-nagios-group=nagios --enable-redhat-pthread-workaround make make install 6.其它设置chkconfig --add nagios #配置机器启动时自动启动Nagios chkconfig nagios on /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg #检查Nagios配置文件 vi /etc/selinux/config #关闭SELinux SELINUX=disabled service iptables stop #关闭SELinux,或打开80,5666端口 7.启动并访问启动 /usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios.cfg service nagios start 现在就可以访问nagios服务了
可见nagios服务能运行了,现在它只监控了它自己.下面让它监控wichow服务器. 2.监控Windows服务器nagios监控windows系统有三种实现方式：SNMP,NSClient++,NRPE,后面两种方式都需要在windows上安装agent，本文档只介绍使用NSClient++方式来监控Windows 1.windows设置把nsclient++0.3.3.zip解压到C盘然后进入命今窗口安装 C:\>cd "NSClient++-Win32-0.3.5" C:\NSClient++-Win32-0.3.5>nsclient++ /install l \NSClient++.cpp(193) Service installed! 编辑NES.ini [modules] #去掉注释符号”;”除了CheckWMI.dll和RemoteConfiguration.dll FileLogger.dll CheckSystem.dll CheckDisk.dll NSClientListener.dll [Settings] allowd_host=192.168.0.20/32 #些处为nagios服务的IP [NSClient] port=12489 #去掉注释就可以了！ 启动nsclient服务并确认端口是否打开 C:\NSClient++-Win32-0.3.5>netstat -an | more Active Connections Proto Local Address Foreign Address State TCP 0.0.0.0:445 0.0.0.0:0 LISTENING TCP 0.0.0.0:5666 0.0.0.0:0 LISTENING TCP 0.0.0.0:12489 0.0.0.0:0 LISTENING 2.nagios设置接下来我们开始配置nagios服务器里面的内容 因为nagios是模块化调用,先到配置文件打开windows相关模块 vi /usr/local/nagios/etc/nagios.cfg # Definitions for monitoring the local (Linux) host cfg_file=/usr/local/nagios/etc/objects/localhost.cfg # Definitions for monitoring a Windows machine cfg_file=/usr/local/nagios/etc/objects/windows.cfg #去掉这句话的注释 打开模块后配置windows.cfg vi /usr/local/nagios/etc/objects/windows.cfg define host{ use windows-server host_name winserver #被监控主机名 alias My Windows Server address 192.168.0.8 ; 被监控的windows地址 #把下面的host_name都改成winserver define service{ use generic-service host_name winserver service_description CPU Load check_command check_nt!CPULOAD!-l 5,80,90 #监控CPU使用 } define service{ use generic-service host_name winserver service_description Memory Usage check_command check_nt!MEMUSE!-w 80 -c 90 #监控内存 } 打开windows模块,设置windows.cfg中相关被监控主机与监控内容后nagios服务器就配置完了,下面重启nagios然后看一下监控结果. service nagios start
呵呵,监控到了,现在windows运行一切正常 3.Nagios监控相关内容 1).nagios目录功能的简要说明bin Nagios执行程序所在目录，nagios文件即为主程序 etc Nagios配置文件位置 sbin Nagios Cgi文件所在目录，也就是执行外部命令所需文件所在的目录 Share Nagios网页文件所在的目录 Var Nagios日志文件、spid 等文件所在的目录 var/archives 日志归档目录 var/rw 用来存放外部命令文件 libexec 存放nagios插件 2)如何使用nagios插件上面监控windows使用了check_nt插件(插件都放在/usr/local/nagios/libexec) [root@cxy ~]# ls /usr/local/nagios/libexec/ check_apt check_ftp check_mailq check_overcr check_tcp check_breeze check_http check_mrtg check_ping check_time check_by_ssh check_icmp check_mrtgtraf check_pop check_udp check_clamd check_ide_smart check_nagios check_procs check_ups check_cluster check_ifoperstatus check_nntp check_real check_users check_dhcp check_ifstatus check_nntps check_rpc check_wave check_dig check_imap check_nrpe check_sensors negate check_disk check_ircd check_nt check_simap urlize 可以看到有很多插件我们也可以使用帮助来自己写监控代码 例如查看check_nt帮助 [root@cxy libexec]# pwd /usr/local/nagios/libexec [root@cxy libexec]# ./check_nt -h Usage:check_nt -H host -v variable [-p port] [-w warning] [-c critical][-l params] [-d SHOWALL] [-t timeout] #监控CPU写法 CPULOAD = Average CPU load on last x minutes. Request a -l parameter with the following syntax: -l <minutes range>,<warning threshold>,<critical threshold>. <minute range> should be less than 24*60. Thresholds are percentage and up to 10 requests can be done in one shot. ie: -l 60,90,95,120,90,95 #完整写法为 check_nt!CPULOAD!-l 5,80,90 check_nt调用cpuload,5分钟内负载平均达到80%为warning,负载达到90%为critical 监控磁盘使用 USEDDISKSPACE = Size and percentage of disk use. Request a -l parameter containing the drive letter only. Warning and critical thresholds can be specified with -w and -c. #如果要监控C盘,达到80%报警,达到90%为严重危险 check_nt!USEDDISKSPACE!-l c -w 80 -c 90 本文出自 “” 博客，请务必保留此出处 |
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