1、源代碼安裝
#wget http://nchc.dl.sourceforge.net/sourceforge/net-snmp/net-snmp-5.4.2.1.tar.gz
#tar zxvf net-snmp-5.4.2.1.tar.gz
#cd net-snmp-5.4.2.1
#./configure -enable-mfd-rewrites -with-default-snmp-version="2" -with-sys-contact="admin" -with-sys-location="China" -with-logfile="/var/log/snmpd.log" -with-persistent-directory="/var/net-snmp"
#make
#make install

2、通過網絡yum安裝net-snmp
# yum -y install net-snmp

3、或者找到光盤或者網上下載rpm包進行安裝即可
安裝命令為
# rpm -ivh net-snmp-5.3.1-14.el5.i386.rpm
其他相關的snmp包也建議一并安裝
net-snmp-utils-5.3.1-14.el5.i386.rpm
net-snmp-libs-5.3.1-14.el5.i386.rpm
net-snmp-devel-5.3.1-14.el5.i386.rpm

配置snmp
# cp /etc/snmpd.conf /etc/snmpd.conf.bak
# vi /etc/snmpd.conf
輸入如下信息，其中localhost 表示允許訪問該snmp的主機地址，public為團體名稱
com2sec roUser localhost public
#如果需要更多團體和允許訪問的主機，增加如下行即可
com2sec roUser 0.0.0.0/0 abcdefg
group roGroup v1 roUser
group roGroup v2c roUser
view all included .1
includeAllDisks for all partitions and disks
access roGroup "" any noauth exact all none none

4.重啟snmpd
# service snmpd restart

5.設置系統啟動自動啟動
# chkconfig --level 345 snmpd on

6.注意確認udp 161端口被防火墻允許。