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We have a new Nagios Core server monitoring Linux hosts running NRPE plugins. Most of them are working as expected, but the SSH Monitor is failing with "NRPE: Command 'check_ssh' not defined". I can run check_ssh locally, but it's not working from the Nagios monitor.

nagios_errors

What am I doing wrong? I can run check_ssh on the linix agent itself and it works. Other plugins, like check_users, works when called from the nagios monitor with check_nrpe.

From the nagios monitor, calling check_nrpe on a linix agent:

check_nrpe

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  • is check_ssh included in nrpe.cfg? Commented May 18, 2022 at 21:52
  • there is your answer, as i mentioned you didn't defined check_ssh command in your nrpe.cfg, define it and it'll work ;-) Commented May 18, 2022 at 21:54
  • serverfault.com/questions/562845/… Commented May 18, 2022 at 21:57

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