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dns-timeouts problem when 1 dns-server down - bbtest-net not running in parralel?
by Carl.Melgaard＠STAB.RM.DK 13 May '11

13 May '11

Hi, I'm trying to figure out why Xymon adds alot of time to dns-tests when 1 of our test-DNS-servers are down. From taking 1 second to run it goes to a whopping 450 seconds. It seems theres a 30-second delay (bbtest-net dns-timeout standard) - but its repeated multiple times in serial - and bbtest-net waits and waits (12 times x 30 seconds) - for a total of 450 seconds to complete 455 resolved hostnames. Heres a snapshot stracing bbnet-test: select(5, [4], [], NULL, {16, 789000}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347013, 721246198}) = 0 sendto(4, "qd\1\0\0\1\0\0\0\0\0\0\<server>"..., 36, MSG_NOSIGNAL, NULL, 0) = 36 clock_gettime(CLOCK_MONOTONIC, {347013, 721471198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347043, 721050198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347043, 721110198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347073, 721684198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347073, 721744198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347103, 721863198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347103, 721925198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347133, 723122198}) = 0 sendto(4, "qd\1\0\0\1\0\0\0\0\0\0\<server>"..., 36, MSG_NOSIGNAL, NULL, 0) = 36 clock_gettime(CLOCK_MONOTONIC, {347133, 723301198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347163, 724742198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347163, 724804198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347193, 725228198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347193, 725289198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347223, 726443198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347223, 726504198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347253, 728061198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347253, 728120198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347283, 728632198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347283, 728693198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347313, 728263198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347313, 728323198}) = 0 select(5, [4], [], NULL, {30, 0}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347343, 728968198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347343, 729027198}) = 0 select(5, [4], [], NULL, {29, 995000}) = 0 (Timeout) clock_gettime(CLOCK_MONOTONIC, {347373, 725591198}) = 0 close(4) = 0 clock_gettime(CLOCK_MONOTONIC, {347373, 725764198}) = 0 clock_gettime(CLOCK_MONOTONIC, {347373, 725982198}) = 0 open("/etc/resolv.conf", O_RDONLY) = 4 fstat(4, {st_mode=S_IFREG|0644, st_size=110, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2b4f255f9000 read(4, "nameserver <ip>\nnameserver"..., 4096) = 110 Why so many retries? And are they retries? I had 5 dns-servers in resolv.conf atm, but that doesn't add up with 12 retries. Wouldn't it be a better idea to run these tests in parallel? So it doesn't affect all the other dns-lookups? I've tweaked my setup with "-dns-timeout=3" and put "options timeout:1" in resolv.conf - which reduces the time to 45 seconds - but if we had 5000 servers in Xymon, we'd still be facing a major problem. Maybe its different in 4.3.3? Im running a weird 4.4.0-beta, and upgrading in the near future. Regards, Carl Melgaard

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trending graph generation
by Phil.Crooker＠orix.com.au 13 May '11

13 May '11

>>> Larry Barber 05/13/11 3:46 AM >>> > I believe I have found a bug when you generate trending graphs for custom > periods. It seems that the display name is used in the command rather than > the "true" name. For instance, if you have a hosts.cfg entry like this: > 1.2.3.4 fully.qualified.domain.name # yadda yadda yadda NAME:display_name > The trends page uses "display_name" when you ask it to generate custom > length graphs. You can hack the URL and replace the display name with the > real name (fully.qualified.display.name above) and everything works fine. > Thanks, > Larry Barber So you are saying the graph doesn't display? We use this feature a lot and don't have a problem seeing the graphs. If you remove the NAME entry, does it work? Does the problem only happen when the NAME thing is at the end of the line?

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customize the email body alerts for xymon
by nc.sonal＠gmail.com 12 May '11

12 May '11

Hi team, I need to customize the email body and pattern for the alerts receiving from xymon. As in the below alert mail for disk , - we need the mail to display only the filesystem which is critical in individual mails and avoid displaying the the entire list of filesystems. - We need to customise the body of the mail and add some meaningful text unique for each alert,let me know if any sample script can be used for it. - in below mail /oracle/SRP/sapdata0 alert is shown in KB UNITS, can this be changed to show MB units free Please suggest.thanks in advance ---------- Forwarded message ---------- From: <xymon at sapsrp.sasrv.biz> Date: Thu, May 12, 2011 at 5:31 PM Subject: Xymon [313335] sapsrp:disk CRITICAL (RED) To: nc.sonal at gmail.com red Thu May 12 15:59:21 WST 2011 - Filesystems NOT ok &red /var (98% used) has reached the PANIC level (90%) &yellow /tempsp (96% used) has reached the WARNING level (95%) &yellow /usr/sap (81% used) has reached the WARNING level (70%) &yellow /oracle/SRP/saparch (77% used) has reached the WARNING level (75%) &yellow /oracle/SRP/sapdata0 (3013196 units free) has reached the WARNING level (3013199 units) Filesystem 1024-blocks Used Free %Used Mounted on /dev/hd4 1048576 473192 575384 46% / /dev/hd2 10485760 4792084 5693676 46% /usr /dev/hd9var 524288 513520 10768 98% /var /dev/hd3 1572864 950588 622276 61% /tmp /dev/hd1 262144 968 261176 1% /home /proc - - - - /proc /dev/hd10opt 1179648 478100 701548 41% /opt /dev/lvsrporacle 212992 103972 109020 49% /oracle /dev/lvsrp_client 409600 264280 145320 65% /oracle/client /dev/lvsrp_srp 1359872 262204 1097668 20% /oracle/SRP /dev/fslv01 5242880 5006128 236752 96% /tempsp /dev/lvsrpmira 720896 410056 310840 57% /oracle/SRP/mirrlogA /dev/lvsrpmirb 720896 410056 310840 57% /oracle/SRP/mirrlogB /dev/lvsrporia 720896 426576 294320 60% /oracle/SRP/origlogA /dev/lvsrporib 720896 410056 310840 57% /oracle/SRP/origlogB /dev/lvsrp_sapreorg 565248 33572 531676 6% /oracle/SRP/sapreorg /dev/lvsrp_sapmnt 4194304 2273984 1920320 55% /sapmnt/SRP /dev/lvsrp_usr_sap 7856128 6303556 1552572 81% /usr/sap /dev/lvsrp_102 8183808 5288020 2895788 65% /oracle/SRP/102_64 /dev/lvsrparch 10240000 7882476 2357524 77% /oracle/SRP/saparch /dev/lvsrpdata0 185073664 182060468 3013196 99% /oracle/SRP/sapdata0 See http://sapsrp/xymon-cgi/svcstatus.sh?HOST=sapsrp&SERVICE=disk -- Thanks & Regards Sonal kumar N C

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trending graph generation
by lebarber＠gmail.com 12 May '11

12 May '11

I believe I have found a bug when you generate trending graphs for custom periods. It seems that the display name is used in the command rather than the "true" name. For instance, if you have a hosts.cfg entry like this: 1.2.3.4 fully.qualified.domain.name # yadda yadda yadda NAME:display_name The trends page uses "display_name" when you ask it to generate custom length graphs. You can hack the URL and replace the display name with the real name (fully.qualified.display.name above) and everything works fine. Thanks, Larry Barber

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Setting Xymon up for redundancy/HA
by Carl.Melgaard＠STAB.RM.DK 12 May '11

12 May '11

Hi, Im curious how you guys have achieved to setup Xymon for HA/redundancy - so that you can do maintenance etc. on 1 Xymon server, and still keep monitoring hosts with the other. I've looked at the different approaches in the "Administration Guide", but they all have pros and cons and some are rather complex. The goals I have: Being able to keep monitoring with 1 xymon server down - have all data etc. sync'ed between the 2 xymon servers, so I don't miss out on historic data - don't get double notifications/alerts - easy administration. We currently have 4 data centres, spread around on different locations - one possibility would be to have 1 xymon server in each data centre, with the local hosts reporting in to that server, but how do I keep on monitoring those hosts, if the local xymon server crashes? Hope you can answer some of my questions. Regards, Carl Melgaard

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Limitations for CLASS in analysis.cfg?
by Johan.Sjoberg＠deltamanagement.se 11 May '11

11 May '11

Hi. Can CLASS be used for all tests in analysis.cfg? I configured some hosts to two different classes using hosts.cfg, and then tried to use these for definitions in analysis.cfg like this: CLASS=class2 PROC apache2 PROC ntpd PROC snmpd CLASS=class1 PROC apache2 PROC mysqld PROC ntpd PROC snmpd FILE %/backup/latest/.* yellow mtime<90200 DIR /backup/latest yellow size>1 TRACK The problem is that only the files test appear on the hosts. Procs report "No process checks defined". So it looks like the CLASS defintions are working, but the PROCS lines are ignored for some reason. We are running Xymon 4.3.3 /Johan

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Change response time setting for URL monitoring in Hobbit
by Sridhar.Adapalli＠hhsc.state.tx.us 11 May '11

11 May '11

Hi I a monitoring a URL based on HTTP protocol. The default response time setting seems to be 10 secs. I would like to change it to a higher number. Can anyone of you know please let me know how to change this setting? Thanks -- Sridhar

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lib-xymonrrd.c problem..
by sstaples＠mnsi.net 11 May '11

11 May '11

Hi! This is my first post here... I am just trying to make some small changes to our xymon system, and I am having some weird issues... we are using the 4.3.0 branch, and the issues i am running into, are with the devmon if_load pages. The thing that I am doing, is in this page there is the table at the top, and a bunch of graphs on the bottom (i didn't set this up, and i am assuming that this is the "default"). I am trying to create a link from the table, that will open the corresponding graph url (as if i had scrolled down to the graph and click on it). I had it sort of working with some creative javascripting, but after looking into it, it wasn't 100%. the "table" is not sorted at all, but the "graphs" section is sorted based on the rrd name. is there anyway (i am sure that there is) to put the same value from the transforms file {ifLoad} into the ./lib/xymonrrd.c file? does that make sense? doesn't have to be that {ifLoad} perse, but something that i can make match from teh table to the graphs... i was thinking in this area, to add the 'id=\"ifload_%s\"': static const char *xymonlinkfmt = "<table summary=\"%s Graph \"><tr><td><A HREF=\"%s&action=menu\" id=\"ifload_%s\"><IMG BORDER=0 SRC=\"%s&graph=hourly&action=view\" ALT=\"xymongraph %s \"></A></td><td>..... If you could point me in the right direction, I would be greatful :) Steve.

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external script : zfs
by work＠infomaniak.ch 10 May '11

10 May '11

Hi, I've developped an interesting external script for people needing to follow zfs files. All the info about it are hosted on github: https://github.com/briner/zfs-4-xymon and you can also check the screenshots here: https://github.com/briner/zfs-4-xymon/blob/master/doc/zfs-4-xymon.png Hope that it can helps. Regards cED

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Experience: Monitoring Oracle via Xymon?
by Carl.Melgaard＠STAB.RM.DK 10 May '11

10 May '11

Hi, Does anyone have any experience in monitoring Oracle via Xymon (tablespaces/instaces/listener/export/rman-backups) - any help would be welcomed. Regards, Carl Melgaard

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