1.nagios 啓動（root身份）
/etc/init.d/nagios restart
（/etc/init.d/xinetd restart 重啓nsca,用於接收客戶端的數據，端口爲5667，接收數據出現問題時，需要重啓）
2.nagios 配置文件編輯
（su - nagios編輯）
1）/usr/local/nagios/etc/objects/hostgroups.cfg中定義hostgroup,有時禁用host,需要在這裏把相應主機註釋掉
define hostgroup{
hostgroup_name NETWORK-DEVICE Group
alias NETWOKR_DEVICE
members FW01
}
2）/usr/local/nagios/etc/nagios.cfg （禁用主機註釋掉相應主機配置文件）
cfg_file=/usr/local/nagios/etc/objects/DB1.cfg
3.檢查配置，
/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg 用來檢查配置是否有問題，
出現這樣的說明沒問題
.........
Total Warnings: 0
Total Errors: 0
Things look okay - No serious problems were detected during the pre-flight check
再用root重啓/etc/init.d/nagios restart
常用腳本
客戶端
useradd -u 2001 -s /sbin/nologin nagios
cd /usr/local
tar -xzvf nagios.tar.gz
sed -i "s/WEB2/DB3/g" /usr/local/nagios/exe_scripts.sh
echo "*/2 * * * * sh /usr/local/nagios/exe_scripts.sh >/dev/null 2>&1" >>/var/spool/cron/nagios
服務端
sed -i "s/ DB1/DB3/g" /usr/local/nagios/etc/objects/DB3.cfg
sed -i "s/address 10.99.2.40/address 10.99.2.42/g" /usr/local/nagios/etc/objects/DB3.cfg