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<p class="MsoNormal"><span style="color:#1F497D">Issue Resolved.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">TCP_wrappers was the culprit.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">R,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">D.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:EN-IE">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:EN-IE"> Dermot
Duffy <br>
<b>Sent:</b> 06 December 2011 17:04<br>
<b>To:</b> nagios-users@lists.sourceforge.net<br>
<b>Subject:</b> CHECK_NRPE: Error - Could not complete SSL handshake<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have installed the following on a RHEL 5.4 blade server:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>nagios-3.2.1<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>nagios-plugins-1.4.11<o:p></o:p></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span><![endif]>nrpe-2.12<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Install went smoothly, compiled without error.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Now trying to connect to my nagios server and get the following:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"># /usr/local/nagios/libexec/check_nrpe -H localhost<o:p></o:p></p>
<p class="MsoNormal">CHECK_NRPE: Error - Could not complete SSL handshake.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Port appears to be listening:<o:p></o:p></p>
<p class="MsoNormal">[root@node2 ~]# netstat -at | grep nrpe<o:p></o:p></p>
<p class="MsoNormal">tcp 0 0 *:nrpe *:* LISTEN
<o:p></o:p></p>
<p class="MsoNormal">[root@node2 ~]# netstat -plan | grep 5666<o:p></o:p></p>
<p class="MsoNormal">tcp 0 0 0.0.0.0:5666 0.0.0.0:* LISTEN 22482/xinetd
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Messages log shows the following:<o:p></o:p></p>
<p class="MsoNormal">2011-12-06T16:54:22.553812+00:00 node2 xinetd[2154]: libwrap refused connection to nrpe (libwrap=nrpe) from 127.0.0.1<o:p></o:p></p>
<p class="MsoNormal">2011-12-06T16:54:22.553834+00:00 node2 xinetd[2154]: FAIL: nrpe libwrap from=127.0.0.1<o:p></o:p></p>
<p class="MsoNormal">2011-12-06T16:54:22.554039+00:00 node2 xinetd[22482]: START: nrpe pid=2154 from=127.0.0.1<o:p></o:p></p>
<p class="MsoNormal">2011-12-06T16:54:22.554104+00:00 node2 xinetd[22482]: EXIT: nrpe status=0 pid=2154 duration=0(sec)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My /etc/xinetd.d/nrpe is configured correctly as I have got several other servers (same spec) working fine.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I get the following from my nagios server when trying to telnet the port:<o:p></o:p></p>
<p class="MsoNormal">[root@nagios_server]# telnet node2 5666<o:p></o:p></p>
<p class="MsoNormal">Trying 192.168.235.50...<o:p></o:p></p>
<p class="MsoNormal">Connected to ocmp2.brandtone.lan (192.168.235.50).<o:p></o:p></p>
<p class="MsoNormal">Escape character is '^]'.<o:p></o:p></p>
<p class="MsoNormal">Connection closed by foreign host.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">R,<o:p></o:p></p>
<p class="MsoNormal">D.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<b><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:#C00000;mso-fareast-language:EN-GB">____________________________________________________________________________________________________________________________________________________________________________________________</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#C00000;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<span style="color:#1F497D;mso-fareast-language:EN-IE"><img width="318" height="61" id="Picture_x0020_1" src="cid:image001.jpg@01CCB43C.20813D80" alt="Description: Description: Description: Description: Brandtone Side Bar logo cropped"></span><span style="color:#1F497D;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
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<b><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black;mso-fareast-language:EN-GB">Dermot Duffy<o:p></o:p></span></b></p>
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<b><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:black;mso-fareast-language:EN-GB">IT Infrastructure Technical Lead<o:p></o:p></span></b></p>
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<b><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:#C00000;mso-fareast-language:EN-GB"><a href="http://www.brandtone.ie/"><span style="color:#C00000">www.brandtone.ie</span></a> |
<a href="mailto:Dermot.Duffy@brandtone.ie">Dermot.Duffy@brandtone.ie</a></span></b><span style="font-size:9.0pt;font-family:"Helvetica","sans-serif";color:#292827;mso-fareast-language:EN-GB"><br>
M: +353 85 711 7530<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-fareast-language:EN-IE"><o:p> </o:p></span></p>
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