1.改yum源

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

2.调整字符集

echo 'export LC_ALL=C'>> /etc/profile
source /etc/profile

3.关闭SELINUX，防火墙

/etc/init.d/iptables stop
/etc/init.d/iptables stop
chkconfig iptables off
setenforce 0
sed -i 's#SELINUX=enforcing#SELINUX=disabled#g' /etc/selinux/config

4.时间同步

/usr/sbin/ntpdate pool.ntp.org
echo '#time sync by qinzc at 2018-9-6'>>/var/spool/cron/root
echo '*/10 * * * * /usr/sbin/ntpdate pool.ntp.org >/dev/null 2>&1'>>/var/spool/cron/root
crontab -l

5.添加Nagios用户

/usr/sbin/useradd -m nagios -s /sbin/nologin

6.解压并编译Nagios相关包

unzip oldboy_training_nagios_soft.zip

点击下载：oldboy_training_nagios_soft.zip

7.安装插件

yum -y install perl-devel  //安装插件必安装

tar zxf nagios-plugins-1.4.16.tar.gz
cd nagios-plugins-1.4.16
./configure --prefix=/usr/local/nagios --enable-perl-modules --enable-redhat-pthread-workaround 
make && make install
cd ../
ls /usr/local/nagios/libexec/|wc -l

8.安装nrpe

tar zxvf nrpe-2.12.tar.gz
cd nrpe-2.12
./configure 
make all
make install-plugin
make install-daemon
make install-daemon-config
cd ..

9.安装iostat插件

tar zxvf Params-Validate-0.91.tar.gz 
cd Params-Validate-0.91 
perl Makefile.PL 
make  
make install 
cd .. 
#---------------------------------------- 
tar zxvf Class-Accessor-0.31.tar.gz
cd Class-Accessor-0.31
perl Makefile.PL
make
make install
cd ..
#---------------------------------------- 
tar zxvf Config-Tiny-2.12.tar.gz
cd Config-Tiny-2.12
perl Makefile.PL
make
make install
cd ..
#---------------------------------------- 
tar zxvf Math-Calc-Units-1.07.tar.gz
cd Math-Calc-Units-1.07
perl Makefile.PL
make
make install
cd ..
#---------------------------------------- 
tar zxvf Regexp-Common-2010010201.tar.gz
cd Regexp-Common-2010010201
perl Makefile.PL
make
make install
cd ..
#---------------------------------------- 
tar zxvf Nagios-Plugin-0.34.tar.gz
cd Nagios-Plugin-0.34
perl Makefile.PL
make
make install
cd ..
#----------------------------------------

#for monitor iostat 
yum install sysstat -y    //系统性能命令工具

/bin/cp ~/tools/nagios/check_memory.pl /usr/local/nagios/libexec
/bin/cp ~/tools/nagios/check_iostat /usr/local/nagios/libexec

chmod 755 /usr/local/nagios/libexec/check_memory.pl
chmod 755 /usr/local/nagios/libexec/check_iostat

dos2unix /usr/local/nagios/libexec/check_memory.pl
dos2unix /usr/local/nagios/libexec/check_iostat

10.修改nrpe.cfg配置文件

vim /usr/local/nagios/etc/nrpe.cfg  +79  
79行增加服务端IP
allowed_hosts=127.0.0.1,192.168.1.15

删除199-203行内容

添加：
echo "command[check_load]=/usr/local/nagios/libexec/check_load -w 15,10,6 -c 30,25,20">>/usr/local/nagios/etc/nrpe.cfg
echo "command[check_mem]=/usr/local/nagios/libexec/check_memory.pl -w 6% -c 3%">>/usr/local/nagios/etc/nrpe.cfg
echo "command[check_disk]=/usr/local/nagios/libexec/check_disk -w 20% -c 8% -p /">>/usr/local/nagios/etc/nrpe.cfg
echo "command[check_swap]=/usr/local/nagios/libexec/check_swap -w 20% -c 10%">>/usr/local/nagios/etc/nrpe.cfg
echo "command[check_iostat]=/usr/local/nagios/libexec/check_iostat -w 6 -c 10">>/usr/local/nagios/etc/nrpe.cfg

11.开启Nagios客户端,开机自启

pkill nrpe 
sleep 2
/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
echo  "#nagios nrpe process cmd by qinzc 2018-9-7" >> /etc/rc.local
echo "/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d">>/etc/rc.local
netstat -lnt|grep 5666 && echo "nagios client is ok"

至此客户端安装配置完毕