May 2012 - Xymon - Xymon mailman web

diskstat.sh/RRD oddity
by sholmes42＠mac.com 18 Oct '12

18 Oct '12

This is just a comment on an oddity with respect to diskstat.sh and RRD. We make pretty heavy use of the diskstat.sh script, which I believe I downloaded from xymonton. When I installed it I used the standard clientlaunch.cfg stanza for the configuration and everything worked great. I was called to task today because we have been having some disk io issues on the RHEL VMs and someone was looking at the trend graphs for some servers to see if there was anything they could learn and they noticed that beginning at about 4pm local time on Monday the graphs for the number of sectors written per second on a couple of file systems on several VMs jumped from the 10 to 20 range to the 300 to 340 range and stayed there. The graph for number of disk writes per second had a corresponding jump up to about 40 or 50 from close to zero. In analyzing the data I discovered that the file system that was displaying this behavior is the same file system to which the diskstat.sh script is writing its temp files. It appears that for some reason, starting at 4pm on Monday the 5 minute test interval and the 5 minute average for RRD got in sync and all it was seeing was the data point that corresponded to its own writing activity and RRD was using it for the entire 5 minute average (of course, that's what RRD does). I 'fixed' it by changing the test interval to something less than 5 minutes. I tried 2, 3, and 4 minutes and they all had the effect of reducing the data in the plot back to the expected level, i.e. to the level it was before 4pm on Monday. The mystery remains why it suddenly started seeing and using its own disk activity at the same time on several different servers. Steve Holmes ITaP/Purdue University -- If they give you ruled paper, write the other way. -Juan Ramon Jimenez, poet, Nobel Prize in literature (1881-1958) I prayed for freedom for twenty years, but received no answer until I prayed with my legs. -Frederick Douglass, Former slave, abolitionist, editor, and orator (1817-1895)

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Event History
by kconnell＠ryerson.ca 04 Oct '12

04 Oct '12

I built a new Xymon server this week with v4.3.7 and all looks good. Can I copy event history from my current Xymon/Hobbit v4.2.2 server to the new ? I did try copying files/directories over from /xymon/data/<hist>&<histlogs>, but that didn't seem to work... Ken Connell Intermediate Network Engineer Computer & Communication Services Ryerson University 350 Victoria St RM AB50 Toronto, Ont M5B 2K3 416-979-5000 x6709

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Question on df processing for xymonclient-linux.sh
by Mark.Deiss＠acs-inc.com 04 Sep '12

04 Sep '12

In looking df processing in the Linux Xymon client module in client/xymonclient-linux.sh: echo "[df]" EXCLUDES=`cat /proc/filesystems | grep nodev | awk '{print $2}' | xargs echo | sed -e 's! ! -x !g'` df -Pl -x iso9660 -x $EXCLUDES | sed -e '/^[^ ][^ ]*$/{ N s/[ ]*\n[ ]*/ / }' A bit concerned that the df line can have a dangling "-x" option if the EXCLUDES variable is not populated. With a dangling "-x", the df command will abort with a syntax error and the df status will probably end up with a green status with no rrd history being populated. Users would not be aware unless they specifically brought up the green disk display or were reviewing disk trends and noticing the gap. The EXCLUDES variable can become null if the xymon client account loses read access to /proc/filesystems, for some reason the Linux flavor quit using the nodev tag (maybe started using NODEV or Nodev after a patch update....) or the xymon client went onto an (older) Linux version that did not use the /proc system. Suggest a revision either using sed or awk to build the EXCLUDES variable and a modification of the df command to eliminate the dangling "-x" option EXCLUDES=`cat /proc/filesystems 2>/dev/null | awk ' $1 ~ /nodev/ { printf("-x %s ", $2) }'` Or EXCLUDES=`cat /proc/filesystems 2>/dev/null | sed -ne ' /nodev/{ s/nodev[ ]*/ -x / H } ${ x s/\n//g p }'` df -Pl -x iso9660 $EXCLUDES 2>/dev/null | sed -e '/^[^ ][^ ]*$/{ N s/[ ]*\n[ ]*/ / }' If the parsing for nondev entries in /proc/filesystems now blows up for whatever reason (EXCLUDES is null), the df command will be capturing more than is desired which I believe would be preferred over missing the important file systems. Would like to use "2>&1" rather than "2>/dev/null" in the df line except any captured error lines may cause some downstream havoc with the rrd database processing.

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Xymon Monitor for Vmware ESXi
by gudm00＠gmail.com 02 Aug '12

02 Aug '12

Well there is a new version online now which includes Stevens changes. I've also updated the SVN with the code so that is online now. regards Gudmo > ----- Original Message ----- > From: Svenni > Sent: 02/18/12 06:25 PM > To: xymon > Subject: Re: [Xymon] Xymon Monitor for Vmware ESXi > > Thanks Steve. > > I hope submitting patches can be made easier through SourceForge in > the future. But I will let my college Gudmo decide how he goes about > this since he is the one currently developing and maintaining the script. > > Until then post patches here or send directly to me or Gudmo. It would be good if you could use SourceForge's subversion too. Regards, Malcolm -- BBWin Development - The Windows client for Big Brother and Xymon http://bbwin.sourceforge.net http://xymon.sourceforge.net _______________________________________________ Xymon mailing list Xymon at xymon.com http://lists.xymon.com/mailman/listinfo/xymon

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xymond_alert / alerts.cfg duration bugs or documentation issues
by spah＠syntec.co.uk 31 Jul '12

31 Jul '12

2 possible bugs or documentation errors... Summary: 1. xymond_alert interprets duration as minutes although the documentation says it is specified as seconds. 2. > is interpreted as >= (greater than or equal to) instead of > (greater than) in alerts.cfg. Version affected: 4.3.7 Steps to reproduce: alerts.cfg: HOST=CS1 MAIL $pg-sebsms SERVICE=svcs COLOR=red DURATION>10m REPEAT=30 RECOVERED Also tried without the the m for minutes, as this is supposed to be the default. /home/hobbit/server/bin/xymond_alert --test CS1 svcs --color=red --duration=11 | grep Mail 00009396 2012-05-28 14:09:46 Mail alert with command '/var/spool/mail/root "Xymon [12345] CS1:svcs CRITICAL (RED)" <mailto:syntecseb at sms2email.com'> <email address removed>' <mailto:syntecseb at sms2email.com'> /home/hobbit/server/bin/xymond_alert --test CS1 svcs --color=red --duration=10 | grep Mail 00009483 2012-05-28 14:09:50 Mail alert with command '/var/spool/mail/root "Xymon [12345] CS1:svcs CRITICAL (RED)" <mailto:syntecseb at sms2email.com'> <email address removed>' <mailto:syntecseb at sms2email.com'> /home/hobbit/server/bin/xymond_alert --test CS1 svcs --color=red --duration=9 | grep Mail <nothing> But man xymond_alert says: --duration=SECONDS The SECONDS parameter is the duration of the alert in seconds. However, as you can see above, the xymond_alert parameter is behaving as if it was in minutes (or the alerts.cfg rule is behaving as if it was in seconds). And the > is behaving as if it were >=. Expected behaviour: 1. xymond_alert interprets duration as seconds. 2. > is interpreted as > (greater than) in alerts.cfg. Other Suggestion: alerts.cfg should accept durations specified in seconds (with an s suffix) so that alert parameters can be more accurately defined as some tests or status changes may be occurring more often than once a minute. Kind regards, SebA

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Any alternatives to devmon?
by Paul.Root＠CenturyLink.com 09 Jul '12

09 Jul '12

Does anyone have an alternative to devmon? It's really old, doesn't seem to be being developed and the parsing of exemptions is flaky at best. Paul Root - Engineer III Managed Services Systems - CenturyLink This communication is the property of CenturyLink and may contain confidential or privileged information. Unauthorized use of this communication is strictly prohibited and may be unlawful. If you have received this communication in error, please immediately notify the sender by reply e-mail and destroy all copies of the communication and any attachments.

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BBWin or XymonPSClient
by colin.coe＠gmail.com 05 Jul '12

05 Jul '12

Hi all Should I be using BBWin or the PowerShell client on my Windows nodes (mix of Windows XP, 7, 2008R2)? Thanks CC -- RHCE#805007969328369

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Monitoring disk space on OpenVZ container
by linuxmasterjedi＠free.fr 14 Jun '12

14 Jun '12

Hi, I would like to monitor the disk space on a virtual OpenVZ machine. Unfortunately, these error comes up on the XYmon webpage : "Expected strings (Capacity and Mounted) not found in df output" On the server : ~# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/simfs 26214400 644940 25569460 3% / tmpfs 262144 0 262144 0% /lib/init/rw tmpfs 262144 0 262144 0% /dev/shm Do you have a way to monitor the / filesystem ? Thanks

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how to see graphs for last week/month for perticular test ?snapshot report
by pankaj.dorlikar＠gmail.com 11 Jun '12

11 Jun '12

hi, i have 2 problems.. 1)i want to see last month cpu utilization graph for the perticular host,how can i see that? 2)when i want to see snapshot report for say date 2dec09 7:30am,front pages(bb-html etc) shows time stamp of 2dec09 7:0am,but when i click to see status of perticular test of perticular host,it shows me status of 29oct09 12:40pm.how to overcome it? -- Pankaj V. Dorlikar

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Trends clarification
by Michael.Beatty＠sherwin.com 31 May '12

31 May '12

I have a few questions as to what, exactly, I'm seeing on the "Trends" graphs. Xymongen and Xymonnet runtime.... Is this the time, in (mili)seconds that it takes for those processes to run on that system? In other words, if the Xymongen says 300m, does that mean it took 300 miliseconds to generate a webpage? And, if xymonet says 2 s, does that mean it took 2 seconds to run all of the network tests on that host? Incoming messages - My graph is showing about "625 m"... what is "m"? My average is 0.6 What does that number mean? Thank you. --

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