September 2020 - Xymon - Xymon mailman web

semop failed, Invalid argument - Ubuntu
by zak.beck＠accenture.com 17 Sep '20

17 Sep '20

Hi Sorry for resurrecting this but I get this periodically too and it's really annoying ? 2020-09-17 01:45:23.945832 semop failed, Invalid argument 2020-09-17 01:45:23.945839 Dropping message due to semaphore error One particular server just started doing this about 10 days having not done it for months. It's Ubuntu 16.04 LTS, 4.4.0-189-generic, x64. I have other Ubuntu 16.04 servers where it does not happen or at least, has not happened recently. I turned on debug logging but I'm not too familiar with the server code so it doesn't really say much to me. Here are the additional debug entries: 18723 2020-09-17 01:45:23.945758 Beginning conn_t cleanup 18723 2020-09-17 01:45:23.945762 conn_t cleanup complete 18723 2020-09-17 01:45:23.945783 -> do_message/1 (362 bytes): status+60m awdhrprtldb5.sessions clear Thu Sep 17 01:45:23 MDT 2020 18723 2020-09-17 01:45:23.945790 -> update_statistics 18723 2020-09-17 01:45:23.945793 <- update_statistics 18723 2020-09-17 01:45:23.945797 -> get_hts 18723 2020-09-17 01:45:23.945809 <- get_hts 18723 2020-09-17 01:45:23.945813 ->handle_status 18723 2020-09-17 01:45:23.945818 posting to status channel 18723 2020-09-17 01:45:23.945823 -> posttochannel 2020-09-17 01:45:23.945832 semop failed, Invalid argument 2020-09-17 01:45:23.945839 Dropping message due to semaphore error 18723 2020-09-17 01:45:23.945844 <-handle_status 18723 2020-09-17 01:45:23.945864 <- do_message/1 Xymond eventually falls over and needs restarting. Can anyone help me with this - I can't be the only one with it! Zak Beck -----Original Message----- From: Xymon <xymon-bounces at xymon.com> On Behalf Of John Horne Sent: 12 November 2019 19:22 To: xymon at xymon.com Subject: [External] Re: [Xymon] semop failed, Invalid argument This message is from an EXTERNAL SENDER - be CAUTIOUS, particularly with links and attachments. On Tue, 2019-11-12 at 17:03 +0000, Rothlisberger, John R. via Xymon wrote: > > Does anyone have any helpful ideas? > ... > > 2019-11-01 11:45:07.083973 semop failed, Invalid argument > 2019-11-01 11:45:07.083982 Dropping message due to semaphore error > Not really I'm afraid. The actual error is the invalid argument bit. It refers to a call to 'semop'. A very quick look at the xymond code seems to indicate that it would be the semaphore id that it is objecting to - basically it doesn't exist or the id is less than zero. How that came about though, I have no idea. It may be that the code is being called when it shouldn't be - perhaps a lack of argument checking. It would require much further checking of the code to see what is happening. Maybe running xymond is debug mode will give more information. John. -- John Horne | Senior Operations Analyst | Technology and Information Services University of Plymouth | Drake Circus | Plymouth | Devon | PL4 8AA | UK ________________________________ [https://urldefense.proofpoint.com/v2/url?u=http-3A__www.plymouth.ac.uk_imag… ]<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.plymouth.ac.uk_worl… <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.plymouth.ac.uk_worl…> > This email and any files with it are confidential and intended solely for the use of the recipient to whom it is addressed. If you are not the intended recipient then copying, distribution or other use of the information contained is strictly prohibited and you should not rely on it. If you have received this email in error please let the sender know immediately and delete it from your system(s). 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Adding a description to custom columns
by Eric.Robert＠americansystems.com 16 Sep '20

16 Sep '20

Hello, I was wondering if it is possible to add a description to custom columns in Xymon? I want it to be like the default columns where you click on the name and it shows you a description. It looks like by default when you click on the name of a custom column a page comes up that just says "No match". Eric Robert Info Security Engr, Assoc AMERICAN SYSTEMS phone: +1 (401) 619-7331 | mobile: | fax: Eric.Robert at americansystems.com | AmericanSystems.com LEGAL DISCLAIMER: The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is strictly prohibited and may be unlawful.

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Xymon client on MacOS Catalina (10.15)
by Brian.Scott＠bunyatech.com.au 05 Sep '20

05 Sep '20

Hi list, Has anyone had experience with running the xymon client on the latest Macos? My particular problem is that the handling of disk mounts and capacities has gone seriously weird. First exhibit - output from the mount command: # mount /dev/disk1s1 on / (apfs, local, read-only, journaled) devfs on /dev (devfs, local, nobrowse) /dev/disk1s2 on /System/Volumes/Data (apfs, local, journaled, nobrowse) /dev/disk1s5 on /private/var/vm (apfs, local, journaled, nobrowse) map auto_home on /System/Volumes/Data/home (autofs, automounted, nobrowse) All volumes are either marked nobrowse or read-only so no disks are selected by xymonclient-darwin.sh. This has the immediate kick on effect of causing a bash set command to dump all set variables because the filesystem list is empty. Ignoring this because we actually want to select some filesystems, the question is which ones. Looking at the output from df: # df -P -H Filesystem????? Size?? Used? Avail Capacity? Mounted on /dev/disk1s1??? 1.0T??? 11G??? 92G??? 11%??? / devfs?????????? 345k?? 345k???? 0B?? 100%??? /dev /dev/disk1s2??? 1.0T?? 893G??? 92G??? 91%??? /System/Volumes/Data /dev/disk1s5??? 1.0T?? 3.2G??? 92G???? 4%??? /private/var/vm map auto_home???? 0B???? 0B???? 0B?? 100%??? /System/Volumes/Data/home It looks like /dev/disk1s1, s2 and s5 are all the same real partition but account for different space from it, i.e. total size = 1.0T, Used = 11G+893G+3.2G=907.2G, Avail=92G. This would suggest that a reasonable thing to monitor would be one of these entries ('/' makes some sense) and derive used as size-avail (1.0T-92G). This then falls down when I plug an extra disk in (in this case a FAT32 USB drive) adding: /dev/disk2s1 on /Volumes/NO NAME (msdos, local, nodev, nosuid, noowners) and /dev/disk2s1???? 15G?? 137M??? 15G???? 1%??? /Volumes/NO NAME Which looks a lot more like conventional drives on a normal unix-style system. Fortunately (?) for me, the server I'm trying to monitor only has a single disk so this isn't a further complicating issue. Has anyone already done anything to make sense of all this in a modified version of xymonclient-darwin.sh? Is there a cutoff point in macos versions where the existing script was good and a new one is needed? I haven't had to deal with a Mac server before so haven't particularly cared about what xymon made of it until now. Cheers, stay safe, Brian Scott

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Renaming default columns
by Eric.Robert＠americansystems.com 04 Sep '20

04 Sep '20

Hi, I was wondering if it is at all possible to rename the default column names in Xymon? I would like to make some of the names more descriptive if possible. Eric Robert Info Security Engr, Assoc AMERICAN SYSTEMS phone: +1 (401) 619-7331 | mobile: | fax: Eric.Robert at americansystems.com | AmericanSystems.com LEGAL DISCLAIMER: The information in this email is confidential and may be legally privileged. It is intended solely for the addressee. Access to this email by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is strictly prohibited and may be unlawful.

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