<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body bgcolor="#ffffff" text="#000099"> I setup the "check_logs.pl" (<a class="moz-txt-link-freetext" href="http://www.nagiosexchange.org/cgi-bin/page.cgi?g=Detailed%2F1752.html;d=1">http://www.nagiosexchange.org/cgi-bin/page.cgi?g=Detailed%2F1752.html;d=1</a>) test and its config file on some local Linux servers tested via NRPE. All other NRPE tests work fine (including some custom ones). The check_logs.pl works fine locally, but fails over NRPE. I've enabled debugging in NRPE, but its not telling me much more... Client local test: <blockquote>atum:/etc/init.d # /usr/local/nagios/libexec/check_logs.pl -c /etc/nagios/check_logs_linux.cfg faillog => OK; lastlog => OK; messages => OK; wtmp => OK; </blockquote> Server test to client via NRPE: <blockquote>/usr/local/nagios/libexec/check_nrpe -H atum -c check_logs CHECK_NRPE: No output returned from daemon. </blockquote> Local log (/var/log/messages) on client when test is run from server: <blockquote>Apr 1 18:05:52 atum nrpe[1412]: Added command[check_logs]=/usr/local/nagios/libexec/check_logs.pl -c /etc/nagios/check_logs_linux.cfg Apr 1 18:05:52 atum nrpe[1412]: INFO: SSL/TLS initialized. All network traffic will be encrypted. Apr 1 18:05:52 atum nrpe[1412]: Handling the connection... Apr 1 18:05:52 atum nrpe[1412]: Host is asking for command 'check_logs' to be run... Apr 1 18:05:52 atum nrpe[1412]: Running command: /usr/local/nagios/libexec/check_logs.pl -c /etc/nagios/check_logs_linux.cfg Apr 1 18:05:52 atum nrpe[1412]: Command completed with return code 0 and output: Apr 1 18:05:52 atum nrpe[1412]: Return Code: 0, Output: </blockquote> The response is immediate, so its not a timeout issue. Other NRPE tests work fine: <blockquote>/usr/local/nagios/libexec/check_nrpe -H atum -c check_load OK - load average: 0.00, 0.00, 0.00|load1=0.000;5.000;10.000;0; load5=0.000;5.000;10.000;0; load15=0.000;5.000;10.000;0; /usr/local/nagios/libexec/check_nrpe -H atum -c check_memory CHECK_MEMORY OK - 1702M free | free=1785552896b;210236620.8:;105118310.4: </blockquote> And on the client: <blockquote>Apr 1 18:09:25 atum nrpe[1799]: INFO: SSL/TLS initialized. All network traffic will be encrypted. Apr 1 18:09:25 atum nrpe[1799]: Handling the connection... Apr 1 18:09:25 atum nrpe[1799]: Host is asking for command 'check_load' to be run... Apr 1 18:09:25 atum nrpe[1799]: Running command: /usr/local/nagios/libexec/check_load -r -w 5.0 -c 10.0 Apr 1 18:09:25 atum nrpe[1799]: Command completed with return code 0 and output: OK - load average: 0.00, 0.00, 0.00|load1=0.000;5.000;10.000;0; load5=0.000;5.000;10.000;0; load15=0.000;5.000;10.000;0; Apr 1 18:09:25 atum nrpe[1799]: Return Code: 0, Output: OK - load average: 0.00, 0.00, 0.00|load1=0.000;5.000;10.000;0; load5=0.000;5.000;10.000;0; load15=0.000;5.000;10.000;0; Apr 1 18:09:26 atum nrpe[1802]: INFO: SSL/TLS initialized. All network traffic will be encrypted. Apr 1 18:09:26 atum nrpe[1802]: Handling the connection... Apr 1 18:09:26 atum nrpe[1802]: Host is asking for command 'check_memory' to be run... Apr 1 18:09:26 atum nrpe[1802]: Running command: /usr/local/nagios/libexec/check_memory.pl -w 10% -c 5% Apr 1 18:09:26 atum nrpe[1802]: Command completed with return code 0 and output: CHECK_MEMORY OK - 1703M free | free=1786134528b;210236620.8:;105118310.4: Apr 1 18:09:26 atum nrpe[1802]: Return Code: 0, Output: CHECK_MEMORY OK - 1703M free | free=1786134528b;210236620.8:;105118310.4: </blockquote> Here's the local command in my /etc/nagios/nrpe.cfg: <blockquote>command[check_logs]=/usr/local/nagios/libexec/check_logs.pl -c /etc/nagios/check_logs_linux.cfg </blockquote> And on the server (when done in services.cfg, though its failing with manual tests too): <blockquote>define service { hostgroup_name linux-servers service_description LOGS check_command check_nrpe!check_logs max_check_attempts 3 normal_check_interval 15 retry_check_interval 5 check_period 24x7 notification_interval 120 notification_period 24x7 notification_options w, u, c, r, f, s contact_groups unixadmins } </blockquote> Considering it fails with a manual test (command line), I doubt its my services.cfg entry. It runs fine when called locally, so I'm thinking it could be an issue on the client in the nrpe.cfg, but if so I can't find it... I *do* see the obvious... namely, the other two tests that run over NRPE have something after "Output:" and the check_logs.pl does not. However, called at the command line it does... which is what stumps me. What would cause the test to run fine locally, but return nothing when called via NRPE??? (BTW: I'm running 3.x with the latest set of plugins and NRPE). One more thing: I know *someone* is going to ask why I don't just use the built-in check_log test. The answer is that check_logs.pl allows for multiple files and pattern matches and a "seek" file to speed things up. <pre class="moz-signature" cols="72">-- A. Davis Email: <a class="moz-txt-link-abbreviated" href="mailto:nccomp@gmail.com">nccomp@gmail.com</a> "There is no limit to what a man can accomplish if he doesn't care who gets the credit." - Ronald Reagan </pre> </body> </html>