nagios监控iostat

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1.下载check_iostat插件并上传到客户端的/usr/local/nagios/libexec目录中,下载地址：
#wget http://exchange.nagios.org/components/com_mtree/attachment.php?link_id=3379&cf_id=24
2.授予权限
# chmod +x /usr/local/nagios/libexec/check_iostat
# chown nagios. /usr/local/nagios/libexec/check_iostat3.测试是否可用
# ./check_iostat -d sda -w 100 -c 200
OK - I/O stats tps=0.31 KB_read/s=5.94 KB_written/s=6.66 | 'tps'=0.31; 'KB_read/s'=5.94; 'KB_written/s'=6.66;4.测试完成后添加到nrpe.cfg中
# vi /usr/local/nagios/etc/nrpe.cfg
command[check_iostat]=/usr/local/nagios/libexec/check_iostat -d sda -w 100 -c 2005.重启xinetd服务
# /etc/init.d/xinetd restart
Stopping xinetd: [  OK  ]
Starting xinetd: [  OK  ]6.服务端添加命令
# vi /usr/local/nagios/etc/objects/commands.cfg
define command{
command_name    check_iostat
command_line    $USER1$/check_iostat -d $ARG1$ -w $ARG2$ -c $ARG3$
}7.服务端添加服务   
# vi /usr/local/nagios/etc/services/mail_156.cfg
define sevice{
use     generic-service
host_name       mail_156
service_description     check-iostat
check_command   check_nrpe!check_iostat!sda!100!200
}8.等会出现结果

9.出错问题解决
[root@mail ~]# /usr/local/nagios/libexec/check_iostat -d sda1 -w 100 -c 200
/usr/local/nagios/libexec/check_iostat: line 54: sda1: command not found
/usr/local/nagios/libexec/check_iostat: line 55: sda1: command not found
/usr/local/nagios/libexec/check_iostat: line 56: sda1: command not found
/usr/local/nagios/libexec/check_iostat: line 60: bc: command not found
/usr/local/nagios/libexec/check_iostat: line 60: bc: command not found
/usr/local/nagios/libexec/check_iostat: line 61: bc: command not found
/usr/local/nagios/libexec/check_iostat: line 64: bc: command not found
/usr/local/nagios/libexec/check_iostat: line 64: bc: command not found
/usr/local/nagios/libexec/check_iostat: line 65: bc: command not found
OK - I/O stats tps= KB_read/s= KB_written/s= | 'tps'=; 'KB_read/s'=; 'KB_written/s'=;提出54行到56行命令未找到，查看脚本的54行需要什么命令。我查找到是iostat未安装
# yum install -y sysstat
提示60行到66行bc命令未找到，需要安装bc命令
# yum install -y bc