1. 确认snmp代理是否已安装

# rpm -q net-snmp

2. 如果未安装，安装snmp

# yum install net-snmp net-snmp-devel net-snmp-utils

3. 修改配置 /etc/snmp/snmpd.conf

com2sec notConfigUser  default       public

#view mib2   included  .iso.org.dod.internet.mgmt.mib-2 fc
view mib2   included  .iso.org.dod.internet.mgmt.mib-2 fc

#access  notConfigGroup ""      any       noauth    exact  systemview none none
access  notConfigGroup ""      any       noauth    exact  mib2 none none

4. 启动并设置为自启动

systemctl start snmpd
systemctl enable snmpd