<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On Dec 20, 2010, at 10:48 AM, mark bradley wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>There's always strace(1) if you want to dive into the details ...<br></div><div><br></div><div>Mark</div></blockquote><div><br></div>Ah. Unfortunately, I am not Mac OS X and not Linux.</div><div><br></div><div><div>On Dec 20, 2010, at 10:28 AM, Mike Chesnut wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div><blockquote type="cite">Of course, one cannot tell what command is _actually_ being executed or<br></blockquote><blockquote type="cite">which command _was_ actually executed. I pointed this out in a previous<br></blockquote><blockquote type="cite">post (below). Apparently there are no workarounds for this.<br></blockquote><br>If I understand what you're asking about, I've used this to achieve it <br>in the past:<br><br><a href="http://www.waggy.at/nagios/capture_plugin.htm">http://www.waggy.at/nagios/capture_plugin.htm</a><br></div></blockquote><br></div><div>This is interesting. It is unfortunate that one would have to put the plugin onto every command, but it is definitely a possibility. Of course, nagios could itself have this kind of functionality. But that would be up to the implementors.</div><div><br></div><div>Thanks for the replies, though.</div><div><br></div><div>cheers - ray</div><div><br></div><div><blockquote type="cite"><br><div class="gmail_quote">On Mon, Dec 20, 2010 at 1:18 PM, Ray Kiddy <span dir="ltr"><<a href="mailto:ray@ganymede.org">ray@ganymede.org</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div style="word-wrap:break-word"><br><div><div class="im"><div>On Dec 20, 2010, at 9:36 AM, Polifemo, Salvatore wrote:</div>
<br><blockquote type="cite"><span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><div lang="EN-US" link="blue" vlink="purple">
<div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Calibri, sans-serif;color:rgb(31, 73, 125)">Yes, run the actual command from the command line as Steve demonstrated.</span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Calibri, sans-serif;color:rgb(31, 73, 125)"> </span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Calibri, sans-serif;color:rgb(31, 73, 125)">Make sure which command is being used, and if you run the command with no parameters it will display the correct usage.</span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Calibri, sans-serif;color:rgb(31, 73, 125)"> </span></div>
<div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><b><i><span style="font-family:'Bookman Old Style', serif;color:rgb(0, 32, 96)">Salvatore Polifemo</span></i></b></div>
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</div></div></span></blockquote><div><br></div></div><div>Of course, one cannot tell what command is _actually_ being executed or which command _was_ actually executed. I pointed this out in a previous post (below). Apparently there are no workarounds for this.</div>
<div><br></div><div>- ray</div><div><br><div>Begin forwarded message:</div><br><blockquote type="cite"><div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-family:Helvetica;font-size:medium;color:rgb(0, 0, 0)"><b>From: </b></span><span style="font-family:Helvetica;font-size:medium">Ray Kiddy <<a href="mailto:ray@ganymede.org" target="_blank">ray@ganymede.org</a>><br>
</span></div><div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-family:Helvetica;font-size:medium;color:rgb(0, 0, 0)"><b>Date: </b></span><span style="font-family:Helvetica;font-size:medium">November 17, 2010 9:42:59 AM PST<br>
</span></div><div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-family:Helvetica;font-size:medium;color:rgb(0, 0, 0)"><b>To: </b></span><span style="font-family:Helvetica;font-size:medium">Nagios Users List <<a href="mailto:nagios-users@lists.sourceforge.net" target="_blank">nagios-users@lists.sourceforge.net</a>><br>
</span></div><div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-family:Helvetica;font-size:medium;color:rgb(0, 0, 0)"><b>Subject: </b></span><span style="font-family:Helvetica;font-size:medium"><b>[Nagios-users] can log show actual command executed?</b><br>
</span></div><div style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0px"><span style="font-family:Helvetica;font-size:medium;color:rgb(0, 0, 0)"><b>Reply-To: </b></span><span style="font-family:Helvetica;font-size:medium">Nagios Users List <<a href="mailto:nagios-users@lists.sourceforge.net" target="_blank">nagios-users@lists.sourceforge.net</a>><br>
</span></div><br><div><br>I am having a problem figuring out see what is actually being executed from a service. Is there a way to get the nagios log to contain the actual command being executed?<br><br>This is what I am seeing in the Nagios.log file:<br>
<br><span style="white-space:pre-wrap"> </span>[1290013792] SERVICE ALERT: <a href="http://myhost.com/" target="_blank">myhost.com</a>;Special App;CRITICAL;SOFT;1;(Service Check Timed Out)<br><br>This is what I see in the nagios.dat file:<br>
<br><span style="white-space:pre-wrap"> </span>check_command=check_http!/myURL!alive<br><br>So, this shows me what the command string is in the service.cfg. I cannot see, though, what the actual command line is at this moment in time. It turns out that this check_command corresponds (I think) to:<br>
<br><span style="white-space:pre-wrap"> </span>check_http -u /myURL -s alive<br><br>How would I know this, though, if the command definition had been changed or if it is using, because of a mis-spelling, a command I do not think it is using? If I go into the command.cfg and switch the order of parameters, for example, I see nothing in these logs that tells me what is doing what.<br>
<br>I know the simplest answer is "You should not do that." But my point is that the log file does not have enough information to tell me what happened at a past moment of time. I would need the log information _and_ the state of the command definitions at that time. If a log does not show you what happened in the past, what is its purpose?<br>
<br>I am having a problem with a particular web application. For some reason I put in the check and it fails. I execute the check_http that I _think_ this service is doing, and it gives me an OK. I ended up creating a custom executable that calls curl and fetches against the same URL and this now works fine. Kind of lame, though. I use check_http in about 100 other services. So, why is this one single service not working? An obvious answer is that I am not calling the command in the way I think I am. But if I look in the log to see what the service did, I can see what I _think_ it did based on what I can see in what I _think_ is the correct command definition. But I really do not know. I do not see a line like "check_http -u /myURL -s alive" in the log, so, I cannot see if I am mis-reading things.<br>
<br>Any suggestions?<br><br>- ray<br><br></div></blockquote></div><div><div class="h5"><div><br></div><div><br></div><blockquote type="cite"><span style="border-collapse:separate;font-family:Helvetica;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;font-size:medium"><div lang="EN-US" link="blue" vlink="purple">
<div><div><div style="border-right-style:none;border-bottom-style:none;border-left-style:none;border-width:initial;border-color:initial;border-top-style:solid;border-top-color:rgb(181, 196, 223);border-top-width:1pt;padding-top:3pt;padding-right:0in;padding-bottom:0in;padding-left:0in">
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><b><span style="font-size:10pt;font-family:Tahoma, sans-serif">From:</span></b><span style="font-size:10pt;font-family:Tahoma, sans-serif"><span> </span>steve f [mailto:<a href="mailto:a31modela@hotmail.com" target="_blank">a31modela@hotmail.com</a>]<span> </span><br>
<b>Sent:</b><span> </span>Monday, December 20, 2010 12:14 PM<br><b>To:</b><span> </span><a href="mailto:nagios-users@lists.sourceforge.net" style="color:blue;text-decoration:underline" target="_blank">nagios-users@lists.sourceforge.net</a><br>
<b>Subject:</b><span> </span>Re: [Nagios-users] tracing nagios actions</span></div></div></div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt">
</div><p class="MsoNormal" style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:12pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">Mark,<br>
<br>I think Salvatore means run the check manually from the command line , make sure you run it as the nagios user and try setting tha warning & critical values to something that will make it fail also:<br><br>/usr/local/nagios/libexec > ./check_disk -w 50 -c 70 -p /home<br>
DISK OK - free space: /home 440 MB (95% inode=99%);| /home=20MB;436;416;0;486<br><br>The -p just checks a specific path. ( FYI )<br><br>Steve<br><br><br><br></span></p><div class="MsoNormal" align="center" style="margin-top:0in;margin-right:0in;margin-bottom:0.0001pt;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;text-align:center">
<span style="font-size:10pt;font-family:Tahoma, sans-serif"><hr size="2" width="100%" align="center"></span></div><p class="MsoNormal" style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:12pt">
<span style="font-size:10pt;font-family:Tahoma, sans-serif">Date: Mon, 20 Dec 2010 11:50:14 -0500<br>From:<span> </span><a href="mailto:gopearls42@gmail.com" style="color:blue;text-decoration:underline" target="_blank">gopearls42@gmail.com</a><br>
To:<span> </span><a href="mailto:nagios-users@lists.sourceforge.net" style="color:blue;text-decoration:underline" target="_blank">nagios-users@lists.sourceforge.net</a><br>Subject: Re: [Nagios-users] tracing nagios actions</span></p>
<div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">Hi Salvatore,</span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif"> </span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">They're all Unix (Redhat) servers. By check command do you mean nagios -v? I've done that and I do not get an errors.</span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif"> </span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">Thanks,</span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">Mark</span></div>
</div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif"> </span></div>
<div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">On Mon, Dec 20, 2010 at 11:35 AM, Polifemo, Salvatore <<a href="mailto:polifemos@conedsolutions.com" style="color:blue;text-decoration:underline" target="_blank">polifemos@conedsolutions.com</a>> wrote:</span></div>
<div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Tahoma, sans-serif;color:rgb(31, 73, 125)">Are these Windows or *nix server?</span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Tahoma, sans-serif;color:rgb(31, 73, 125)"> </span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Tahoma, sans-serif;color:rgb(31, 73, 125)">Either wau run the check command manually from a console and see what the results are.</span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Tahoma, sans-serif;color:rgb(31, 73, 125)"> </span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Tahoma, sans-serif;color:rgb(31, 73, 125)"> </span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Tahoma, sans-serif;color:rgb(31, 73, 125)"> </span></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><b><i><span style="font-size:10pt;font-family:'Bookman Old Style', serif;color:rgb(0, 32, 96)">Salvatore Polifemo</span></i></b></div>
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><b><i><span style="font-size:10pt;font-family:Gungsuh, serif;color:rgb(0, 32, 96)">Sr. Systems Security Specialist</span></i></b></div>
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<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:11pt;font-family:Tahoma, sans-serif;color:rgb(31, 73, 125)"> </span></div>
<div style="border-right-style:none;border-bottom-style:none;border-left-style:none;border-width:initial;border-color:initial;border-top-style:solid;border-top-color:windowtext;border-top-width:1pt;padding-top:3pt;padding-right:0in;padding-bottom:0in;padding-left:0in">
<div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><b><span style="font-size:10pt;font-family:Tahoma, sans-serif">From:</span></b><span style="font-size:10pt;font-family:Tahoma, sans-serif"><span> </span>mark bradley [mailto:<a href="mailto:gopearls42@gmail.com" style="color:blue;text-decoration:underline" target="_blank">gopearls42@gmail.com</a>]<span> </span><br>
<b>Sent:</b><span> </span>Monday, December 20, 2010 11:14 AM<br><b>To:</b><span> </span><a href="mailto:nagios-users@lists.sourceforge.net" style="color:blue;text-decoration:underline" target="_blank">nagios-users@lists.sourceforge.net</a><br>
<b>Subject:</b><span> </span>[Nagios-users] tracing nagios actions</span></div></div><div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt">
<span style="font-size:10pt;font-family:Tahoma, sans-serif"> </span></div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt">
<span style="font-size:10pt;font-family:Tahoma, sans-serif">Hi,</span></div></div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt">
<span style="font-size:10pt;font-family:Tahoma, sans-serif"> </span></div></div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt">
<span style="font-size:10pt;font-family:Tahoma, sans-serif">I have a small-ish number of servers and I've tried to configure Nagios to warn me about disk-space running low. The problem is that, although disk space is above both warning and critical levels I'm not getting any notifications.</span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif"> </span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">The nagios.log file is silent on the topic and nagios -v does not produce any errors or warnings.</span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif"> </span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">Is there a way to trace what actions nagios is considering (much like make -n) in order to debug this problem? Is there a debugging methodology defined somewhere? If it's in your head can you share?</span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif"> </span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">Thanks,</span></div>
</div><div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif">Mark</span></div>
</div></div></div></div></div><div style="margin-right:0in;margin-left:0in;font-size:12pt;font-family:'Times New Roman', serif;margin-top:0in;margin-bottom:0.0001pt"><span style="font-size:10pt;font-family:Tahoma, sans-serif"><br>
</span></div></div></div></div></span></blockquote></div></div></div><br></div><br>------------------------------------------------------------------------------<br>
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