NRPE - Connection Refused By Host

Problem Description

This KB article addresses the following NRPE error:

Connection Refused By Host

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 usually relates to port/firewall issues or improperly configured "allowed_hosts" directives.  Please refer to the following KB articles for the relevant troubleshooting steps:

NRPE - CHECK_NRPE: Error - Could Not Complete SSL Handshake

NRPE - CHECK_NRPE: Socket Timeout After n Seconds

Final Thoughts

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

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