<html>
<head>
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 12/2/2016 8:35 AM, Alessandro
Tinivelli wrote:<br>
</div>
<blockquote
cite="mid:23E123F55C0A7045838A867C453241D42B9709C0@ITEXCHMBX1"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 14 (filtered
medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
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.StileMessaggioDiPostaElettronica17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 2.0cm 2.0cm 2.0cm;}
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]-->
<div class="WordSection1">
<p class="MsoNormal"><span lang="EN-US">Hi everyone,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">i’m trying to introduce
Xymon in my new company, so i’ve installed xymon on centos7
with precompiled packets from epel repo.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">All was going fine until
a reboot: it happens that graphs are not updated: I see the
correct “updated at…” but the line ends. More clear here<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><a
moz-do-not-send="true"
href="https://postimg.org/image/6a5viq3yn/">https://postimg.org/image/6a5viq3yn/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Restarting the service
or rebooting the machine solves temporary the problem, but
it comes back. The services seem to be up and running.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Tried disabling selinux,
without results.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I did not find anything
clear in the logfiles.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Version is 4.3.27-1.el7<o:p></o:p></span></p>
<b><span
style="font-size:12.0pt;font-family:"Verdana","sans-serif";mso-fareast-language:IT-CH"></span></b><span
style="font-size:9.0pt;font-family:"Verdana","sans-serif";mso-fareast-language:IT-CH">
<span lang="EN-US"><o:p></o:p></span></span></div>
</blockquote>
<br>
This seems to be graphing-issue-Friday :)<br>
<br>
This is usually an indication that there's data being lost somewhere
in the pipeline, or there's a bug in xymond_rrd's caching mechanism.<br>
<br>
Are you seeing any evidence of dropped messages either in your
clients or in xymond_client's logs? Does xymond show any
truncated/("bogus") messages in its status output?<br>
<br>
If not, can you enable debugging on xymond_rrd (either -USR2 or just
add --debug to the CMD line in tasks.cfg)? It should flush its cache
within a second or two of showgraphs.sh triggering it in via the
rrdctl.<pid> socket. If not, or if it's not happening in
order, the RRD files can end up like that. (I've also seen this when
there are multiple xymond_rrd processes running for the same channel
(there should be two - one for status, one for data), which will end
up writing over each other and clobbering RRA values. But that
shouldn't normally be happening.)<br>
<br>
Finally, can you run xymond_rrd in --nocache mode? If the graphs are
subsequently clean, then that pretty much rules out message
transmission issues elsewhere within xymon and we can focus on the
RRD aspect.<br>
<br>
<br>
Regards,<br>
-jc<br>
</body>
</html>