May 2021 - Xymon - Xymon mailman web

cpu rrd files not being generated
by kspringer＠innovateteam.com 28 May '21

28 May '21

I added a new Windows host yesterday and I'm using XymonPSClient v2.41 and data is coming into server encrypted over port 443.? All data seems to be coming in just fine, and disk/memory/tcp graphs were auto generated and work fine.? But the cpu graph did not generate.? I am receiving the cpu stats but the la.rrd file did not get created.? I cleared the hosts data and let everything auto generate again, but the same result occurred with no la.rrd file being created.? I added 7 more new hosts all using the same XymonPSClient over port 443 and the same missing cpu graphs occurred with all of them.? I've got other hosts using the same PSClient over 443 and they work just fine.? Any ideas? I've looked through all the xymon logs and found no errors.? Server reboot affected nothing. I added a new host using the same XymonPSClient but NOT sending the data encrypted, just using port 1984, and the cpu graph auto generated correctly.? Can anyone give me a clue? -- Kris Springer

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analysis.cfg - RRD based status overrides for SPLITNCV graphs
by fabian.wendlandt＠innowerk-it.de 27 May '21

27 May '21

Hi, we are using custom graphs created with the SPLITNCV method and would like to add RRD based status overrides in analysis.cfg. According to the man page, this is possible with a 'DS' line. Unfortunately, I can't get it working with graphs generated by SPLITNCV. Has anyone else got this to work? Here is my config: # The status message of the appperf column looks like this: \w3svc_w3wp(_total)\aktive anforderungen: 4.00000 \w3svc_w3wp(_total)\anforderungen/s: 40.05942 # xymonserver.cfg TEST2RRD="..., appperf=ncv" SPLITNCV_appperf="*:GAUGE" # analysis.cfg HOST=* DS appperf appperf,_w3svc_w3wp_total_aktive_anforderungen.rrd:lambda >5 COLOR=yellow TEXT="More than &U active requests (&V)" DS appperf appperf,_w3svc_w3wp_total_aktive_anforderungen.rrd:lambda >200 COLOR=red TEXT="M More than &U active requests (&V)" # appperf,_w3svc_w3wp_total_aktive_anforderungen.rrd # rrdtool info /xymon/rrd/APP01/appperf,_w3svc_w3wp_total_aktive_anforderungen.rrd filename = "/xymon/rrd/APP01/appperf,_w3svc_w3wp_total_aktive_anforderungen.rrd" rrd_version = "0003" step = 60 last_update = 1622105777 header_size = 1208 ds[lambda].index = 0 ds[lambda].type = "GAUGE" ds[lambda].minimal_heartbeat = 600 ds[lambda].min = NaN ds[lambda].max = NaN ds[lambda].last_ds = "6.00000" ds[lambda].value = 1,0200000000e+02 ds[lambda].unknown_sec = 0 ... As you can see, ds[lambda].last_ds is greater than 5, but the status still remains green (the graph itself is working fine). There's nothing helpful in the logs, too. Is it not possible, to define RRD based overrides for SPLITNCV graphs? Thank you and best regards, Fabian Wendlandt

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How to run multiple xymonnet processes?
by jeremy＠laidman.org 27 May '21

27 May '21

Hi all We have a lot of net tests that take a lot of time, mostly DNS. There's not a lot we can do to reduce the time it takes to run these tests. The end result is that xymonnet takes in excess of 10 minutes to finish a polling cycle, causing missing data points in RRD files. Our Xymon server is not heavily loaded, so it could quite easily cope with running two copies of xymonnet. But I need a way to distribute the hosts between the two. Does anyone have suggestions about how to do this? It'd be neat if I could run xymonnet saying "only run tests for these hosts" on one instance, and "run tests for all except these hosts" on another. But this doesn't seem possible. The nearest to this seems to be the "NET:<netname>" tag, but I don't know how to use the combination of XYMONNETWORK and "--test-untagged" to do what I need. Also, I'm not sure that there won't be other side-effects to abusing the NET: tag in this way. Another idea I had was to construct two new hosts.cfg files from the original (and all included files) and tell two xymonnet instances to use these other hosts.cfg files (perhaps by overriding HOSTSCFG?). Any suggestions? Cheers Jeremy

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Monitoring for process runs too long
by robert.herron＠gmail.com 26 May '21

26 May '21

I need pointers to documentation or how-to for monitoring via the Client Data server-side. I have a server managed by a third-party. Fortunately, this vendor uses Xymon to monitor it. I cannot add custom EXT scripts to it. The vendor did add my Xymon server to the xymonclient.cfg?s XYMSERVERS parameter so I can set custom thresholds in my analysis.cfg. So, the server had a process that hung and started causing problems. I would like to leverage a Client Data on my server to monitor and alert for this process. Thanks. -- Robert Herron robert.herron at gmail.com

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[Bug report] file size limit units and analysis.cfg man page
by zechner＠vrvis.at 25 May '21

25 May '21

Hi, I found a bug in xymon's [1] analysis.cfg when checking a file for max file size. The description for SIZE states "You can append "K" (KB), "M" (MB), "G" (GB) or "T" (TB) to the size. If there is no such modifier, KB is assumed." While this seems to be true, "B" (Bytes) also works, although not documented. This should be corrected to reflect this additional unit. The man page for analysis.cfg has a mistake in it, namely here: "If there is no such modifier, Kilobytes is assumed. E.g. to warn if a file grows larger than 1MB, use size<1024M." This does seem like a typo, obviously this should read "[...] larger than 1MB, use size<1024KB." Thanks in advance! Cheers Christoph Zechner [1] Debian 10.9, xymon 4.3.28 (4.3.28-5+deb10u1)

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Monitor systemd services
by yyyadvendra＠gmail.com 20 May '21

20 May '21

Is it possible to monitor systemd services in xymon ? for ex - sssd.service xyz.automount.service ( not via procs ) Thanks Yadvendra

1 0

notification of Ghost clients
by kspringer＠innovateteam.com 19 May '21

19 May '21

I have a downloadable script on my Xymon system for our developers to install the XymonPSClient on new systems they build. Is there a way for my Xymon Server to notify me when any new hosts appear in the 'Ghost Clients' list? -- Kris Springer

2 1

xycrd: Generate Xymon config from Kubernetes.
by mail＠jonasw.de 18 May '21

18 May '21

Hello, empowering developers to manage and deploy their software themselves is a cornerstone of the DevOps movement. In highly dynamic environments powered by Kubernetes it is especially important to provide a way for development teams to define the monitored endpoints themselves. At work, we currently ask developers to send a pull request for the Xymon config when something changes. This works well enough, but forces a strong coupling between Xymon configuration and application deployment, which is not represented in the resulting files! The Kubernetes orchestrator can be extended using Custom Resource Definitions [1], even in running clusters. Using this facility, cluster users can create/read/update/delete resources just as they are used to for normal workloads. xycrd bridges the gap between Xymon and Kubernetes by watching custom resources, generating a Xymon hosts.cfg snippet and sending a SIGHUP to Xymon as soon as the resources are changed. Please be aware that this is an early release, not suited for production use without extensive testing! See the code here (Debian package available on the latest release): <https://github.com/thriqon/xycrd> Future roadmap: Xycrd does not cleanup monitoring data for deleted endpoints. This creates waste that should be cleaned up. In the future, xycrd should learn to tell Xymon to drop data prior to deleting the entry from the hosts.cfg snippet. Additionally, when nearing v1, the group name (xycrd.thriqon.github.io) will be shortened considerably; still looking for a fitting domain though. If you want something changed, PRs/Issues are open, but I'm happy to answer each and every question on this ML as well. Best regards, Jonas [1]: <https://kubernetes.io/docs/tasks/extend-kubernetes/custom-resources/custom-…>

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Cannot access history page using history button on pages...
by mgoebel＠emich.edu 17 May '21

17 May '21

Hello, It was recently noticed that for machines with dashes in their names example-test.emich.edu if you try to click on the history button on the machine's pages it returns a cannot open that file error. With some poking around it seems to be taking example-test.emich.edu.JVMHeap and trying to open /home/xymon/data/hist/example Is this an issue anyone else has noticed? Thanks, Matt -- Matthew Goebel : m <goebel at emunix.emich.edu>goebel at emich.edu : Unix Jockey @ EMU : Hail Eris Neo-Student, Net Lurker, Donut consumer, and procrastinating medher... "Always with the negative waves, Moriarty" - Oddball "Comfort the troubled, and trouble the comfortable." - Dietrich Bonhoeffer

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Cannot access history page using history button on pages...
by mgoebel＠emich.edu 17 May '21

17 May '21

We are compiling from source : xymon-4.3.29 : on redhat ES 8.3 Thanks, Matt On Mon, May 17, 2021 at 2:54 PM Matthew Goebel <mgoebel at emich.edu> wrote: > Hello, > > It was recently noticed that for machines with dashes in their names > example-test.emich.edu if you try to click on the history button on > the machine's pages it returns a cannot open that file error. With some > poking around it seems to be taking > > example-test.emich.edu.JVMHeap and trying to open > /home/xymon/data/hist/example > > Is this an issue anyone else has noticed? > > Thanks, > Matt > > -- > Matthew Goebel : m <goebel at emunix.emich.edu>goebel at emich.edu : Unix > Jockey @ EMU : Hail Eris > Neo-Student, Net Lurker, Donut consumer, and procrastinating medher... > "Always with the negative waves, Moriarty" - Oddball > "Comfort the troubled, and trouble the comfortable." - Dietrich Bonhoeffer > > > -- Matthew Goebel : m <goebel at emunix.emich.edu>goebel at emich.edu : Unix Jockey @ EMU : Hail Eris Neo-Student, Net Lurker, Donut consumer, and procrastinating medher... "Always with the negative waves, Moriarty" - Oddball "Comfort the troubled, and trouble the comfortable." - Dietrich Bonhoeffer

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