NRPE: Unable to read output

After rebooting kraken to take a photo, I found nagios was displaying an error for my smartmon checks: NRPE: Unable to read output.

Running the command by hand on the nagios server, I found:

$ /usr/local/libexec/nagios/check_nrpe2 -H kraken -c check_smartmon_ad24
NRPE: Unable to read output

But from the remote server I got:

# /usr/local/libexec/nagios/check_smartmon -d /dev/ad24
OK: device is functional and stable (temperature: 29)

I restarted npre and the problem went away… not sure what this is yet….

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1 thought on “NRPE: Unable to read output”

  1. This might help. Add it to /etc/crontab

    @reboot root /bin/sleep 60 && /usr/local/etc/rc.d/nrpe2 restart

    It will restart nrpe 60 seconds after reboot.

    see man 5 crontab for details on @reboot:

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