<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=utf-8"><meta name=Generator content="Microsoft Word 14 (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;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","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;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@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><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Yes, they all go to a central server. I tried using the collectd network plugin a longer time ago and the results was too many lost updates. Because of that I used to run collectd locally and copied the rrd files to a central locations every 30 minutes, not so very effective. Then we starting going the vmware way and with the older version of collectd and rrdtool, many small writes were destroying our SAN. At that point I took the way of rrdcached. Works mostly great, allows flushing when I graph, etc. Just there have been some memory issues/bugs, which should be fixed now. Due to those bugs I had talked about how collectd rrdcached plugin isn’t reconnecting and was told it should be reconnecting. But it doesn’t for me, even with the latest versions.<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'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> XANi [mailto:xani666@gmail.com] <br><b>Sent:</b> Thursday, December 30, 2010 10:25 AM<br><b>To:</b> Ulf Zimmermann<br><b>Cc:</b> 'collectd@verplant.org'<br><b>Subject:</b> Re: [collectd] collectd with rrdcached, not reconnecting when rrdcached gets stopped/restarted<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><br><br><o:p></o:p></p><pre><o:p> </o:p></pre><pre>So I am working on upgrading a number of things right now to collectd 4.10.2 and rrdtool 1.4.5. Unfortunately one of my major problems, is still around. When rrdcached dies/stops and then gets restarted, collectd will not reconnect. There was a discussion of this on IRC at some point, but I never got back to do more testing. Even with the latest version of rrdtool on client and server, collectd will go into a spin with messages like:<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>Dec 29 23:45:40 appbuild01 collectd: collectd startup succeeded<o:p></o:p></pre><pre>Dec 29 23:49:00 appbuild01 collectd[10338]: rrdcached plugin: rrdc_update (appbuild01.autc.com/cpu-0/cpu-user.rrd, [1293695340:49451049], 1) failed with status -3.<o:p></o:p></pre><pre>Dec 29 23:49:00 appbuild01 collectd[10338]: Filter subsystem: Built-in target `write': Dispatching value to all write plugins failed with status -1.<o:p></o:p></pre><pre>Dec 29 23:49:00 appbuild01 collectd[10338]: rrdcached plugin: rrdc_update (appbuild01.autc.com/cpu-0/cpu-nice.rrd, [1293695340:28472], 1) failed with status -3.<o:p></o:p></pre><pre>Dec 29 23:49:00 appbuild01 collectd[10338]: Filter subsystem: Built-in target `write': Dispatching value to all write plugins failed with status -1.<o:p></o:p></pre><pre>Dec 29 23:49:00 appbuild01 collectd[10338]: rrdcached plugin: rrdc_update (appbuild01.autc.com/cpu-0/cpu-system.rrd, [1293695340:10117087], 1) failed with status -3.<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>At this point I have to restart collectd and everything will be fine. The pain is having to do this on > 300 machines.<o:p></o:p></pre><p class=MsoNormal style='margin-bottom:12.0pt'>Hi,<br><br>are u directing all 300 machines to same rrdcached server ? Wouldn't it be better to put collectd with rrdcached and network plugin (set up to act as server) enabled on machine that is collecting data, and just use network plugin to send data to that machine on all other machines ?<br><br>Regards<o:p></o:p></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width="100%" style='width:100.0%'><tr><td style='padding:0in 0in 0in 0in'><pre><o:p> </o:p></pre><pre>-- <o:p></o:p></pre><pre>Mariusz Gronczewski (XANi) <<a href="mailto:xani666@gmail.com">xani666@gmail.com</a>><o:p></o:p></pre><pre>GnuPG: 0xEA8ACE64<o:p></o:p></pre><pre><a href="http://devrandom.pl">http://devrandom.pl</a><o:p></o:p></pre></td></tr></table><p class=MsoNormal><o:p> </o:p></p></div></div></body></html>