Nagios 安装配置

##Debian 6 安装server # apt-get install nagios* 一路设置好各种密码,成功后访问 http://ip/nagios3 既可，默认用户*nagiosadmin* ##Centos 安装client rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm yum -y install nagios nagios-plugins-all nrpe chkconfig nrpe on 编辑配置文件 `nano /etc/nagios/nrpe.cfg` 将其中的`allowed_hosts`改为自己的值: allowed_hosts=192.168.1.2 #server地址 重启nrpe: service nrpe restart ##配置Server端 检测一下是否能连接到client: /usr/lib/nagios/plugins/check_nrpe -H 192.168.2.11 进入`/etc/nagios3/conf.d`目录,新建并编辑`my_nagios2.cfg`: define host{ use generic-host host_name mylinux alias mylinux address 192.168.1.mylinux } define service{ use generic-service host_name mylinux service_description HTTP-Server check_command check_http } # Define a service to check the disk space of the root partition # on the local machine. Warning if < 20% free, critical if # < 10% free space on partition. define service{ use generic-service ; Name of service template to use host_name mylinux service_description Disk Space check_command check_all_disks!20%!10% } # Define a service to check the number of currently logged in # users on the local machine. Warning if > 20 users, critical # if > 50 users. define service{ use generic-service ; Name of service template to use host_name mylinux service_description Current Users check_command check_users!20!50 } # Define a service to check the number of currently running procs # on the local machine. Warning if > 250 processes, critical if # > 400 processes. define service{ use generic-service ; Name of service template to use host_name mylinux service_description Total Processes check_command check_procs!250!400 } # Define a service to check the load on the local machine. define service{ use generic-service ; Name of service template to use host_name mylinux service_description Current Load check_command check_load!5.0!4.0!3.0!10.0!6.0!4.0 } 重启服务: service nagios3 restart ##添加Mysql监控插件 在server下载插件: cd /usr/lib/nagios/plugins wget https://raw.github.com/tart/tart-monitoring/master/checkMySQLProcesslist.sh chmod a+x checkMySQLProcesslist.sh 向command配置`/etc/nagios3/commands.cfg`中添加: define command{ command_name checkMySQLProcesslist command_line /usr/lib/nagios/plugins/checkMySQLProcesslist.sh -u $ARG1$ -p $ARG2$ -s 60 -w 20 -c 50 } 向client配置`/etc/nagios3/conf.d/my_nagios2.cfg`中添加: define service{ use generic-service host_name localhost service_description Mysql Process List check_command checkMySQLProcesslist!用户名!密码 } 然后重启服务: service nagios3 restart ##other > Nagios的插件编写很简单，同上mysql的插件，照葫芦画瓢就行，添加其他client节点，只要安装好相应系统的nrpe和nagios的插件，然后在server段添加一个配置文件就行。