(转)CentOS搭建Nagios监控
A.Nagios服务端1.安装软件包
[*]yum install -y httpd
2.下载nagios
[*]wgethttp://syslab.comsenz.com/downloads/linux/nagios-3.0.5.tar.gz
[*]wgethttp://syslab.comsenz.com/downloads/linux/nagios-plugins-1.4.13.tar.gz
[*]wgethttp://syslab.comsenz.com/downloads/linux/nrpe-2.12.tar.gz
3.添加nagios账号
[*]useradd nagios
4.编译安装nagios
[*]mkdir /opt/hadoop/
[*]tar -xzvf nagios-3.0.5.tar.gz
[*]cd nagios-3.0.5
[*]./configure --prefix=/opt/hadoop/nagios
[*]make all
[*]make fullinstall
[*]mkdir /opt/hadoop/nagios/etc
[*]mkdir /opt/hadoop/nagios/etc/objects
[*]cp ./sample-config/cgi.cfg /opt/hadoop/nagios/etc/
[*]cp ./sample-config/nagios.cfg /opt/hadoop/nagios/etc/
[*]cp ./sample-config/resource.cfg /opt/hadoop/nagios/etc/
[*]cp ./sample-config/template-object/commands.cfg /opt/hadoop/nagios/etc/objects/
[*]cp ./sample-config/template-object/contacts.cfg /opt/hadoop/nagios/etc/objects/
[*]cp ./sample-config/template-object/timeperiods.cfg /opt/hadoop/nagios/etc/objects/
[*]cp ./sample-config/template-object/templates.cfg /opt/hadoop/nagios/etc/objects/
[*]cp ./sample-config/template-object/localhost.cfg /opt/hadoop/nagios/etc/objects/
[*]touch /opt/hadoop/nagios/var/nagios.log
[*]chmod -R 755/opt/hadoop/nagios/etc/
[*]chown -R nagios:nagios /opt/hadoop/nagios
5.编译安装nagios-plugins
[*]tar zxvf nagios-plugins-1.4.13.tar.gz
[*]cdnagios-plugins-1.4.13
[*]./configure --prefix=/opt/hadoop/nagios --with-nagios-user=nagios --with-nagios-group=nagios
[*]make && make install
检查是否已经安装成功,看这个目录下是否有插件文件
[*]ls /opt/hadoop/nagios/libexec/
6.安装nrpe
[*]tar zxvf nrpe-2.12.tar.gz
[*]cd nrpe-2.12
[*]./configure --prefix=/opt/hadoop/nagios --enable-ssl --enable-command-args
[*]make all
[*]make install-plugin
[*]make install-daemon
[*]make install-daemon-config
7.配置httpd
添加web账号
[*]htpasswd -c /opt/hadoop/nagios/etc/htpasswd.users nagiosadmin
B.Nagios客户端
1.准备软件包
[*]wgethttp://syslab.comsenz.com/downloads/linux/nagios-plugins-1.4.13.tar.gz
[*]wgethttp://syslab.comsenz.com/downloads/linux/nrpe-2.12.tar.gz
2.添加nagios账号，准备安装目录
[*]mkdir /opt/hadoop/nagios
[*]useradd nagios
3.编译安装nrpe
[*]tar -xzvf nrpe-2.12.tar.gz
[*]cd nrpe-2.12
[*]./configure --prefix=/opt/hadoop/nagios --enable-ssl --enable-command-args
[*]make all
[*]make install-plugin
[*]make install-daemon
[*]make install-daemon-config
4.安装nagios-plugin
[*]tar -xzvf nagios-plugins-1.4.13.tar.gz
[*]cd nagios-plugins-1.4.13
[*]./configure --prefix=/opt/hadoop/nagios --with-nagios-user=nagios --with-nagios-group=nagios
[*]make && make install
检查是否已经安装成功,看这个目录下是否有插件文件
[*]ls /opt/hadoop/nagios/libexec/
5. 配置nrpe
[*]vim /opt/hadoop/nagios/etc/nrpe.cfg
[*]找到”allowed_hosts=127.0.0.1”改成“allowed_hosts=127.0.0.1,10.130.2.72”,后边的IP是nagios服务端IP
[*]找到” dont_blame_nrpe=0”改成“dont_blame_nrpe=1”
6.一段nrpe启停脚本,放在/etc/init.d/nrpe里
[*]#!/bin/bash
[*]#
[*]# chkconfig: 2345 55 25
[*]# description: NRPE Daemon
[*]#
[*]
[*]# source function library
[*]./etc/rc.d/init.d/functions
[*]
[*]RETVAL=0
[*]
[*]prog='nrpe'
[*]NRPE_CFG='/opt/hadoop/nagios/etc/nrpe.cfg'
[*]NRPE_PRG='/opt/hadoop/nagios/bin/nrpe'
[*]NRPE_OPT='-d'
[*]PID_FILE='/var/run/nrpe.pid'
[*]
[*]start()
[*]{
[*] echo -n $"Starting $prog: "
[*][-f $PID_FILE ]&& rm -f $PID_FILE
[*] $NRPE_PRG -c $NRPE_CFG $NRPE_OPT
[*] pid=`ps aux | grep -v grep | grep $NRPE_PRG | awk '{print $2}'`
[*] echo $pid > $PID_FILE
[*]
[*]if ps aux | grep -v grep |grep -q $NRPE_PRG ;then
[*] RETVAL=0
[*] success
[*]else
[*] RETVAL=1
[*] failure
[*]fi
[*] echo
[*]}
[*]
[*]stop()
[*]{
[*] echo -n $"Stopping $prog: "
[*] ps --pid=`cat $PID_FILE`&>/dev/null
[*]if[ $?-eq 0];then
[*] kill -9`cat $PID_FILE`
[*] RETVAL=0
[*]fi
[*] success
[*] echo
[*] RETVAL=0
[*]}
[*]
[*]case"$1"in
[*] start)
[*] start
[*];;
[*] stop)
[*] stop
[*];;
[*] restart)
[*] stop
[*] start
[*];;
[*] status)
[*] status -p $PID_FILE $prog
[*] RETVAL=$?
[*];;
[*]*)
[*] echo $"Usage: $0 {start|stop|restart|status}"
[*] RETVAL=1
[*]esac
[*]exit $RETVAL
6. 启动nrpe
[*]/etc/init.d/nrpe start
C.Nagios服务端添加被监控机
1.配置监控机目录
[*]mkdir /opt/hadoop/nagios/etc/servers
[*]vim /opt/hadoop/nagios/etc/nagios.cfg 追加cfg_dir=/opt/hadoop/nagios/etc/servers
2.添加配置的机器
[*]vim /opt/hadoop/nagios/etc/servers/10.130.2.22.cfg
[*]define host{
[*] use linux-server
[*] host_name 10.130.2.22
[*] alias 10.130.2.22
[*] address 10.130.2.22
[*]}
[*]define service{
[*] use generic-service
[*] host_name 10.130.2.22
[*] service_description check_ping
[*] check_command check_ping!100.0,20%!200.0,50%
[*] max_check_attempts 5
[*] normal_check_interval 1
[*]}
[*]define service{
[*] use generic-service
[*] host_name 10.130.2.22
[*] service_description check_ssh
[*] check_command check_ssh
[*] max_check_attempts 5
[*] normal_check_interval 1
[*]}
3.reload nagios服务端使配置生效
[*]service nagios reload
重新加载nagios后就可以在nagios的界面上看到新的被监控的机器了
4.添加使用nrpe的监控
[*]在/opt/hadoop/nagios/etc/objects/commands.cfg里增加如下行
[*]define command{
[*] command_name check_nrpe
[*] command_line $USER1$/check_nrpe -H $HOSTADDRESS$ -c $ARG1$
[*]}
在服务器监控配置文件中加入如下行，确保被监控机的nrpe服务是开的
[*]define service{
[*] use generic-service
[*] host_name 10.130.2.22
[*] service_description check_load
[*] check_command check_nrpe!check_load
[*] max_check_attempts 5
[*] normal_check_interval 1
[*]}
重新加载nagios使配置生效。
[*]service nagios reload
5.自定义监控脚本
编写脚本check_diskmount.sh
[*]vim /opt/hadoop/nagios/libexec/check_diskmount.sh
[*]#!/bin/bash
[*]num=`cat /proc/mounts| grep '/disk' | wc -l`
[*]if[ $num -eq 12];then
[*] echo "OK - mount disk is $num"
[*] exit 0
[*]else
[*] echo "Critical - mount disk is $num"
[*] exit 1
[*]fi
加上可执行权限
[*]chmod +x /opt/hadoop/nagios/libexec/check_diskmount.sh
在被监控机的nrpe里加入自定义脚本路径
[*]vim /opt/hadoop/nagios/etc/nrpe.cfg
[*]command=/opt/hadoop/nagios/libexec/check_diskmount.sh
重启nrpe
[*]/etc/init.d/nrpe restart
在nagios服务端加入配置
[*]vim /opt/hadoop/nagios/etc/servers/10.130.2.22.cfg
[*]define service{
[*] use generic-service
[*] host_name s9xplan2.isv.cm6
[*] service_description check_diskmount
[*] check_command check_nrpe!check_diskmount
[*] max_check_attempts 3
[*] normal_check_interval 1
[*]}
重新加载nagios，使得配置生效
[*]service nagios reload
摘自：http://www.opstool.com/article/236
页:
[1]