<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 12 (filtered medium)"> <style>  </style>  </head> <body lang=EN-AU link=blue vlink=purple style='word-wrap: break-word; -webkit-nbsp-mode: space;-webkit-line-break: after-white-space'> <div class=WordSection1> <p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"; color:#1F497D'>what’s the command line that is called from nrpe when it’s asked for a ‘check_load’ ? There should be a line similar to this in there:<o:p></o:p></span></p> <p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"; color:#1F497D'><o:p> </o:p></span></p> <p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"; color:#1F497D'>command[check_load]=/usr/lib64/nagios/plugins/check_load -w 5,4,3 -c 8,6,4<o:p></o:p></span></p> <p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"; color:#1F497D'><o:p> </o:p></span></p> <p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"; color:#1F497D'>Does this exist in the nrpe.cfg? If you run the command from your configuration as the nrpe_user, does it execute and return a value properly?<o:p></o:p></span></p> <p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif"; color:#1F497D'><o:p> </o:p></span></p> <div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'> <div> <div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'> <p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family: "Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt; font-family:"Tahoma","sans-serif"'> Jonathan Wiggins [mailto:jwiggins@salon.com] <br> <b>Sent:</b> Wednesday, 22 September 2010 06:36<br> <b>To:</b> nagios-users@lists.sourceforge.net<br> <b>Subject:</b> [Nagios-users] can't get host to display in Host Detail panel<o:p></o:p></span></p> </div> </div> <p class=MsoNormal><o:p> </o:p></p> <p class=MsoNormal>I have 3 web servers, and although they at one time all showed up successfully, now one of them does not.<o:p></o:p></p> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal>i have verified on the web server in question that nrpe is running and listening on tcp/5666:<o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <div> <p class=MsoNormal><b>netstat -ntlp | grep nrpe</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b>tcp 0 0 0.0.0.0:5666 0.0.0.0:* LISTEN 13920/nrpe</b><o:p></o:p></p> </div> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <div> <p class=MsoNormal><b>/etc/init.d/nrpe status</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b>nrpe (pid 13920) is running...</b><o:p></o:p></p> </div> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal>I've checked the nrpe.cfg on another server that is showing up, and compared b/t the two, and they look identical.<o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal>i've got an IPTables rule that allows connections on the web server:<o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal><b>-A RH-Firewall-1-INPUT -p tcp -m tcp --dport 5666 -j ACCEPT</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal>One of the things that doesn't test right though is the <i>check_nrpe</i> command:<o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <div> <p class=MsoNormal> <b>/usr/lib64/nagios/plugins/check_nrpe -H localhost -c check_load</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b>NRPE: Unable to read output</b><o:p></o:p></p> </div> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal>but tail /var/log/messages gives me something interesting, perhaps?<o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <div> <p class=MsoNormal><b>Sep 21 13:30:08 mywebserver kernel: Removing netfilter NETLINK layer.</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b>Sep 21 13:30:09 mywebserver kernel: ip_tables: (C) 2000-2006 Netfilter Core Team</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b>Sep 21 13:30:10 mywebserver kernel: Netfilter messages via NETLINK v0.30.</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b>Sep 21 13:30:10 mywebserver kernel: ip_conntrack version 2.4 (8192 buckets, 65536 max) - 304 bytes per conntrack</b><o:p></o:p></p> </div> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal>On the nagios server, i've checked the mywebserver.cfg file and it looks legit and cross-compared with the two others, it seems identical (except for IP of course):<o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <div> <p class=MsoNormal><b># Host definition</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b># Modified 81610</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal><b>define host{</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><span class=apple-tab-span><b> </b></span><b>use linux-server ; Inherit default values from a template</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b> host_name mywebserver ; The name we're giving to this server</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b> alias mywebserver ; A longer name for the server</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b> address 10.0.100.139 ; IP address of the server</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b>}</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal><b>define service{</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b> use generic-service</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b> host_name mywebserver</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b> service_description Home Page</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b> check_command check_http!ww2</b><o:p></o:p></p> </div> <div> <p class=MsoNormal><b>}</b><o:p></o:p></p> </div> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal> <o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal>Any feedback, suggestions, thoughts, etc.. is much appreciated in advance<o:p></o:p></p> </div> <div> <p class=MsoNormal><o:p> </o:p></p> </div> <div> <p class=MsoNormal>JW<o:p></o:p></p> </div> </div> </div> </body> </html>