sudo

Nagios nrpe and sudo: “NRPE: Unable to read output” On CentOS, you can encounter the following behaviour when configuring an nrpe plugin with sudo: /usr/lib/nagios/plugins/check_nrpe -H 1.2.3.4 -c check_exim Mailqueue WARNING - query returned no output! 12 /usr/lib/nagios/plugins/check_nrpe -H 1.2.3.4 -c check_eximMailqueue WARNING - query returned no output! Given that check_exim is defined as follows,…