I was trying to add an HP printer to the mix and the printer is trying to utilize the service “check_hpjd”. Unfortunately, on my Ubuntu installation, the plugin was not installed in /usr/local/nagios/libexec.

A short amount of research showed that I had failed to install the required SNMP tools to utilize this plugin. And, because I actually installed Nagios and the plugins from the source rather than binaries, the configuration and make checked to see if the required tools would be available before actually installing them.

Long story short, here’s what I ended up doing (apt-get install net-snmp does not work):
apt-get install libsnmp-base libsnmp-python libsnmp15-dbg libsnmp-dev libsnmp-perl libsnmp15 snmp snmpd tkmib

Edit the SNMPD configuration:
mv /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.org
nano /etc/snmp/snmpd.conf

rocommunity public
syslocation “USA”
syscontact myemail@domain.tld
Save and Close

Edit the SNMPD Daemon:
nano /etc/default/snmpd

Change “SNMPDOPTS=’-Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/snmpd.pid 127.0.0.1′”
To “SNMPDOPTS=’-Lsd -Lf /dev/null -u snmp -I -smux -p /var/run/snmpd.pid -c /etc/snmp/snmpd.conf'”

Restart the SNMPD service:
/etc/init.d/snmpd restart

Test the SNMP:
snmpwalk -v 1 -c public -O e host/IPaddress
You should get some sort of feedback