Help please - test works fine EXCEPT over NRPE???

Andrew Davis nccomp at gmail.com
Fri Apr 3 00:08:31 CEST 2009
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I've checked /etc/sudoers, /etc/nagios/nrpe.cfg, /etc/xinetd.d/nrpe, and
the script itself (/usr/local/nagios/libexec/check_logs.pl) and none
have any "tty" strings in them for me to comment out.

  A. Davis
  Email:     nccomp at gmail.com

  "There is no limit to what a man can accomplish
   if he doesn't care who gets the credit." - Ronald Reagan



Lei Chen wrote:
> use visudo command, comment the following line:
> Defaults    requiretty
>
> and  try again.
>
>
> 2009/4/2 Andrew Davis <nccomp at gmail.com>:
>   
>> Its running under xinetd, so 'ps aux|grep nrpe' isn't showing the true user.
>> However, the nrpe.cfg is set to use the nobody user. I've added the nobody
>> user to sudo, and even tried it as the nagios user. What I see now from the
>> server is:
>>
>> /usr/local/nagios/libexec/check_nrpe -H atum -c check_logs
>> CHECK_NRPE: Socket timeout after 10 seconds.
>>
>> And in the messages file on the client:
>>
>> Apr  1 22:54:25 atum nrpe[25661]: Running command: /usr/bin/sudo
>> /usr/local/nagios/libexec/check_logs.pl -c /etc/nagios/check_logs_linux.cfg
>> Apr  1 22:54:25 atum /usr/bin/sudo:   nobody : TTY=unknown ; PWD=/ ;
>> USER=root ; COMMAND=/usr/local/nagios/libexec/check_logs.pl -c
>> /etc/nagios/check_logs_linux.cfg
>>
>>   A. Davis
>>   Email:     nccomp at gmail.com
>>
>>   "There is no limit to what a man can accomplish
>>    if he doesn't care who gets the credit." - Ronald Reagan
>>
>>
>> John Stile wrote:
>>
>> On the client, if you look at 'ps aux |grep nrpe'
>> what user does nrpe run as?
>>
>> You might have to configure sudo to allow that user to run the plugin.
>>
>>
>> On Wed, 2009-04-01 at 18:27 -0400, Andrew Davis wrote:
>>
>>
>> I setup the
>> "check_logs.pl"
>> (http://www.nagiosexchange.org/cgi-bin/page.cgi?g=Detailed%2F1752.html;d=1)
>> 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:
>>
>>         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;
>>
>> Server test to client via NRPE:
>>
>>         /usr/local/nagios/libexec/check_nrpe -H atum -c check_logs
>>         CHECK_NRPE: No output returned from daemon.
>>
>> Local log (/var/log/messages) on client when test is run from server:
>>
>>         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:
>>
>> The response is immediate, so its not a timeout issue. Other NRPE
>> tests work fine:
>>
>>         /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:
>>
>> And on the client:
>>
>>         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:
>>
>> Here's the local command in my /etc/nagios/nrpe.cfg:
>>
>>         command[check_logs]=/usr/local/nagios/libexec/check_logs.pl
>>         -c /etc/nagios/check_logs_linux.cfg
>>
>> And on the server (when done in services.cfg, though its failing with
>> manual tests too):
>>
>>         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
>>         }
>>
>>
>> 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.
>> --
>>
>>
>>   A. Davis
>>   Email:     nccomp at gmail.com
>>
>>   "There is no limit to what a man can accomplish
>>    if he doesn't care who gets the credit." - Ronald Reagan
>> ------------------------------------------------------------------------------
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>> any issue.
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>>
>>
>>
>>
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>>
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>> ::: Messages without supporting info will risk being sent to /dev/null
>>
>>     
>
>
>
>   
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