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NRPE CHECK_NRPE Error Could Not Complete SSL HandshakeNRPE CHECK_NRPE Error Receiving Data From DaemonNRPE CHECK_NRPE Received 0 Bytes From Daemon. Check The Remote Server Logs For Error MessagesNRPE CHECK_NRPE Socket Timeout After n SecondsNRPE Command ’[Your Plugin]’ Not DefinedNRPE Connection Refused By HostNRPE Connection Refused Or Timed OutNRPE ERROR Missing Argument ExceptionNRPE Error While Loading Shared Libraries libssl.soNRPE General Troubleshooting TipsNRPE Linux Cached Memory Not Added to Free MemoryNRPE NRPE Unable To Read OutputNRPE No Output Returned From PluginNRPE Remote does not support Version 3 PacketsNRPE Return Code Of 126 Is Out Of Bounds Plugin May Not Be ExecutableNRPE Return Code Of 127 Is Out Of Bounds Plugin May Be MissingNRPE UNKNOWN No Handler For That CommandNRPE Warning This Plugin Must Be Either Run As Root Or SetuidOpenSSL causes issue with check_nrpe plugin with NSClient++

NRPE - Warning: This Plugin Must Be Either Run As Root Or Setuid

Problem Description

This KB article addresses the following NRPE error:

Warning: This Plugin Must Be Either Run As Root Or Setuid

Assumed Knowledge

The following KB article contains an explanation of how NRPE works and may need to be referenced to completely understand the problem and solution that is provided here:

NRPE - Agent and Plugin Explained

Troubleshooting The Error

This error is usually plugin specific and is most commonly experienced when trying to use a third-party hardware check plugin (most often disk smart checks and raid health plugins). You need to setup the sudoers file and associated config changes mentioned in the following KB article:

NRPE - NRPE: Unable To Read Output

Alternatively, you could set the sticky bit on the plugin's permissions. Sudoers is considered safer, so only use this option if you understand the consequences:

chmod u+s /usr/local/nagios/libexec/<plugin>

Final Thoughts

For any support related questions please visit the Nagios Support Forums at:

http://support.nagios.com/forum/

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