Hi All, For some reason, I couldn’t add localhost itself. I guess the problem is with SNMP. Please find the error messages and logs below. Would be great if anyone could help. [root@server observium]# ./add_device.php localhost Obs3rv1um v2c Trying v2c community Obs3rv1um ... No reply on community Obs3rv1um using v2c Could not reach localhost with given SNMP community using v2c Trying v2c community Obs3rv1um ... No reply on community Obs3rv1um using v2c Could not reach localhost with given SNMP community using v2c Observium v0.13.10.4585 Add Device USAGE: add_device.php <hostname> [community] [v1|v2c] [port] [udp|udp6|tcp|tcp6] add_device.php <hostname> [any|nanp|anp|ap] [v3] [user] [password] [enckey] [md5|sha] [aes|des] [port] [udp|udp6|tcp|tcp6] EXAMPLE: SNMPv1/2c: add_device.php <hostname> [community] [v1|v2c] [port] [udp|udp6|tcp|tcp6] SNMPv3 : Defaults : add_device.php <hostname> any v3 [user] [port] [udp|udp6|tcp|tcp6] No Auth, No Priv : add_device.php <hostname> nanp v3 [user] [port] [udp|udp6|tcp|tcp6] Auth, No Priv : add_device.php <hostname> anp v3 <user> <password> [md5|sha] [port] [udp|udp6|tcp|tcp6] Auth, Priv : add_device.php <hostname> ap v3 <user> <password> <enckey> [md5|sha] [aes|des] [port] [udp|udp6|tcp|tcp6] Remember to run discovery for the device afterwards. This is my /etc/sysconfig/snmpd file # snmpd command line options OPTIONS="-Lsd -Lf /dev/null -p /var/run/snmpd.pid -a" This is my /etc/snmp/snmpd.conf file com2sec readonly default 0bs3rv1um group MyROGroup v2c readonly view all included .1 80 access MyROGroup "" any noauth exact all none none syslocation Rack, Room, Building, City, Country [GPSX,Y] syscontact Your Name your@email.address #Distro Detection extend .1.3.6.1.4.1.2021.7890.1 distro /usr/bin/distro ~ ~ Whenever I do “service snmpd restart”, I can see the following error message in /var/log/messages Oct 20 14:09:47 server snmpd[10038]: Received TERM or STOP signal... shutting down... Oct 20 14:09:47 server snmpd[10055]: NET-SNMP version 5.5 Appreciate your time and assistance. Thanks, Gokul