To setup SNMP daemon firstly install the required packages.
yum install net-snmp net-snmp-devel net-snmp-libs net-snmp-utils
Then edit the main configuration file
vi /etc/snmp/snmpd.conf
Find
From the console you can disable X at startup by issuing the following command.
sudo mv /etc/init/lightdm.conf /etc/init/lightdm.conf.disabled
And then reboot the