<div dir="ltr">Betsy<div><br></div><div>The "mem_swpd" DS name should be defined in the RRD file. Can you check with:</div><div><br></div><div> rrdtool info /usr/local/xymon/data/rrd/<a href="http://ext-dns1.example.com/vmstat.rrd">ext-dns1.example.com/vmstat.rrd</a> | grep type</div><div><br></div><div>and see if it's listed? You should have 17 entries for a RHEL6 server. You might like to compare the output between servers that show failed trends graphs and those that show functioning ones.</div><div><br></div><div>With regards to the CPU trends graphs, I don't actually know what's standard for this, because I've added a whole heap. I wouldn't think adding mem_swpd to xymonserver.cfg or (hobbit)graph.cfg would be required to get a CPU graph to work because mem_swpd has nothing to do with CPU. If the graph shows and is not a broken image, then it's already listed in (hobbit)graph.cfg. If the graph shows on the trends page, then it's already in xymonserver.cfg in GRAPHS. I have "vmstat" listed in TEST2RRD, but if you're already getting an RRD file you have that set correctly.</div><div><br></div><div>By "blank" graph, you mean no lines, and NaN for the min/max/avg numbers under the graph?</div><div><br></div><div>Exactly what graph is broken? Can you click on the blank graph and look at the URL to see what service name it's using? It'll be something like "<a href="http://xymon.example.com/xymon-cgi/showgraph.sh?ex-dns1.example.com&service=vmstat&graph_width=..">http://xymon.example.com/xymon-cgi/showgraph.sh?ex-dns1.example.com&service=vmstat&graph_width=..</a>." You want to see what's after "service=" in the URL.</div><div><br></div><div>That "service" string is matched against RRD filenames as well as entries in graphs.cfg.</div><div><br></div><div>Cheers</div><div>Jeremy</div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 19 July 2015 at 07:27, Betsy Schwartz <span dir="ltr"><<a href="mailto:betsy.schwartz@gmail.com" target="_blank">betsy.schwartz@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div><div><div>I'm seeing a few RHEL6 servers with blank CPU trend graphs .<br></div>the rrd files just contain NaN, sample line:<br><br> /usr/bin/rrdtool dump /usr/local/xymon/data/rrd/<a href="http://ext-dns1.example.com/vmstat.rrd" target="_blank">ext-dns1.example.com/vmstat.rrd</a><br><br> <!-- 2015-07-17 20:00:00 EDT / 1437177600 --> <row><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v><v> NaN </v></row><br> <br></div>rrd-data.log has errors of the form /rrd-data.log:2015-07-18 14:08:42.443123 RRD error updating /usr/local/xymon/data/rrd/<a href="http://ext-dns1.example.com/vmstat.rrd" target="_blank">ext-dns1.example.com/vmstat.rrd</a> from <a href="http://10.100.5.42" target="_blank">10.100.5.42</a>: unknown DS name 'mem_swpd'<br><br></div>So,why do only a few of my servers have this error?<br>What do I need to do to make the CPU trends graphs work? Do I add mem_swpd in xymonservers.cfg and hobbitgraph.cfg and graphs.cfg, and can I do that without breaking the other hundreds of servers?<br></div><br></div><div>Does anyone have the correct invocation for this?<br></div>Thank you!<br><div>(I am also assuming I'll have to blow away the old rrd file to get this to work...?)<br></div><div><br><div><div><div><br><div><div><br></div></div></div></div></div></div></div>
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