Install SNMP

1. Install the SNMPD service by running the following command:
   • yum install net-snmp net-snmp-utils
2. Once the service is installed, verify that it is set to start at startup by running:
   • CentOS 6:
     • chkconfig snmpd on
   • CentOS 7:
     • systemctl enable snmpd

Configure SNMP

1. Make a backup of the original configuration file by running:
   • mv /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.orig
2. Create a new SNMP configuration file by running:
   • touch /etc/snmp/snmpd.conf
3. Once you have the new configuration file, generate a random string for the SNMP community string using a tool such as passwordsgenerator.net
4. Once you have the string, edit /etc/snmp/snmpd.conf and add the following line, replacing [RANDOM_STRING] with the generated string:
   • rocommunity [RANDOM_STRING]
5. Save the configuration file, and finally start the SNMP service by running:
   • CentOS 6:
     • service snmpd restart
   • CentOS 7:
     • systemctl restart snmpd