<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:m="http://schemas.microsoft.com/office/2004/12/omml" 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><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body lang="EN-US" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal">We have implemented a NTP sync check in all of the NRDS checks that we are rolling out right now but I’ve run into a bit of a snag.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am getting returns of ‘Offset Unknown’ on all clients. It appears to only happen for a short period of time (30 min or so) and then it will clear its self up for a bit but the issue will always return.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">From the client that is reporting the unknown offset, I can run the following:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";color:seagreen;background:white"># ./check_ntp_time -H localhost</span><span style="font-size:9.0pt;font-family:"Courier New";color:seagreen"><br>
<span style="background:white">NTP CRITICAL: Offset unknown|</span><br>
<span style="background:white"># ./check_ntp_time -V</span><br>
<span style="background:white">check_ntp_time v1.4.16 (nagios-plugins 1.4.16)</span><br>
<span style="background:white"># ntpdc -p</span><br>
<span style="background:white"> remote local st poll reach delay offset disp</span><br>
<span style="background:white">=======================================================================</span><br>
<span style="background:white">=LOCAL(0) 127.0.0.1 10 64 17 0.00000 0.000000 0.96858</span><br>
<span style="background:white">*timeserver1 xxx.xxx.xxx.xxx 2 64 17 0.00098 4.956048 0.00580<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";color:seagreen;background:white"># /usr/local/nagios/libexec/check_ntp_time -v -H localhost</span><span style="font-size:9.0pt;font-family:"Courier New";color:seagreen"><br>
<span style="background:white">sending request to peer 0</span><br>
<span style="background:white">response from peer 0: offset -2.777669579e-07</span><br>
<span style="background:white">sending request to peer 0</span><br>
<span style="background:white">response from peer 0: offset -2.161832526e-07</span><br>
<span style="background:white">sending request to peer 0</span><br>
<span style="background:white">response from peer 0: offset -4.009343684e-07</span><br>
<span style="background:white">sending request to peer 0</span><br>
<span style="background:white">response from peer 0: offset -1.987209544e-07</span><br>
<span style="background:white">discarding peer 0: stratum=0</span><br>
<span style="background:white">overall average offset: 0</span><br>
<span style="background:white">NTP CRITICAL: Offset unknown|<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Courier New";color:seagreen;background:white"><o:p> </o:p></span></p>
<p class="MsoNormal">In my searches, I noticed a number of people reporting the same issue with the supposed solution being to update your Nagios plugins to 1.4.13. I have done so and am now running 1.4.16 without any change in the service check.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Also, I am unable to check a remote NTP server from these clients as they do not have access to the outside world.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">It has been suggested that the stratum=0 may be the culprit, but I’m not sure of my options here.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Any help would be greatly appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt">Jan</span></b><span style="font-size:10.0pt"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</body>
</html>