April 2016 - Xymon - Xymon mailman web

systemd help
by ken.schweiker＠faa.gov 26 Apr '16

26 Apr '16

Running RH 72 which uses systemd for start up. Are any scripts available for automating startup for server and clients. Thanks.

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xymon master-slave server
by traxler＠lsu.edu 25 Apr '16

25 Apr '16

Maybe have a blank alerts file on slave (except for monitoring primary server)? -- Isaac Traxler Storage & Infrastructure Manager High Performance Computing Louisiana State University, LONI 325 Frey Computing Center, Baton Rouge, LA 70803 225-578-1923 | traxler at lsu.edu On Tue, 5 Apr 2016, eli via Xymon wrote: > Date: Tue, 5 Apr 2016 13:08:42 > From: eli via Xymon <xymon at xymon.com> > Reply-To: eli <den2k10 at yahoo.com>, eli <eliap09 at yahoo.com> > To: Xymon Mailing List <xymon at xymon.com> > Subject: [Xymon] xymon master-slave server > [NON-Text Body part not included]

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Xymon disruption every night!
by earle＠isolar.DynDNS.ORG 23 Apr '16

23 Apr '16

> On Apr 20, 2016, at 3:40 PM, cleaver at terabithia.org wrote: > > Date: Wed, 20 Apr 2016 15:40:14 -0700 > From: "J.C. Cleaver" <cleaver at terabithia.org> > To: "Xymon Mailing List" <xymon at xymon.com> > Subject: Re: [Xymon] Xymon disruption every night! > Message-ID: > <ffe8d4b5d0aa3d63517f2d994cf03d5c.squirrel at mail.kkytbs.net> > Content-Type: text/plain;charset=iso-8859-1 > > > On Wed, April 20, 2016 12:55 pm, Greg Earle wrote: >> >>> On Feb 17, 2016, at 12:50 AM,"J.C. Cleaver" <cleaver at terabithia.org> >>> wrote: >>> >>>> - Why I have a "DNS error" here ? I set up the IP yesterday to this >>>> host >>>> to solve the issue. The "conn" error disappeared since yesterday >>>> evening >>>> but the http error still remains. >>> >>> All signs do point to an issue with DNS resolution here. >>> >>> Was this a custom compile or are you using a package? If custom, what >>> version of c-ares is on your system? That's the underlying resolution >>> library that xymonnet is using by default to handle DNS lookups. The >>> fact that the 'conn' test remained good after you added the local hosts >>> entry matches that, since HTTP tests are performed using their own >>> secondary DNS lookup (to deal with vhosts, etc.) unless the IP is >>> specified there as well. >> >> J.C., >> >> I just stumbled across this thread from 2 months ago. We're having DNS >> glitches at my work and it's causing a flood of <hostname>:http >> "DNS error" alerts in Xymon, which is becoming a real problem. >> >> But here's what I don't understand. All of our HTTP-tested hosts are >> in the "hosts.cfg" file with their short names (instead of FQHNs). So I >> couldn't understand why DNS was involved since the IP addresses and names >> were right there in "hosts.cfg" for Xymon to use. >> >> Your response - specifically "unless the IP is specified there as well" - >> implies that there might be another location where I could load the >> names and addresses of our HTTP-tested hosts, to avoid this problem. >> >> (Yes, I know - hosts and IP addresses can change. But I'm in control of >> that so I can deal.) >> >> If this is the case, where is that other location where I can specify the >> short names/IP addresses for the HTTP tests? > > Yep: https://xymon.com/help/manpages/man5/hosts.cfg.5.html#lbAR > > 192.168.0.10 mywebserver # http://www.sample.com=192.168.0.10/ > > For HTTP tests, an IP override is put in for each URL you're using. This > will prevent a DNS lookup at http-test time for this URL, and when > combined with combined with testip (for any other TCP checks here) and > noconn (for ping->fping resolution), it should prevent any DNS lookups > from being done for the string "mywebserver". > > Unless there's been a regression, that should be sufficient. It's > definitely worked at scale for mass testing of "hosts" that are not being > referred to by a valid DNS name and simply listen on a distinct port. Thank you!!! I had tried using "testip" in each of the Web server entries and couldn't understand why we still kept getting DNS meltdowns. Apparently I missed this subtle line in hosts.cfg(5): -- xymonnet ignores the "testip" tag normally used to force a test to use the IP-address from the hosts.cfg file instead of the hostname, when it performs http and https tests. -- D'oh! - Greg

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WG: Apache webserver performance statistics
by christian.becker＠rhein-zeitung.net 21 Apr '16

21 Apr '16

Hi, i want to monitor apache webserver statistics on a REMOTE server, not on the Xymon server itself..... This means that I need to install webalizer on the remote server, but i'm not sure if we are allowed to do that, or that the company will allow that.... Regards Christian Christian Becker IT-Services _________________________________ Mittelrhein-Verlag GmbH August-Horch-Straße 28 D-56070 Koblenz Verleger und Geschäftsführer: Walterpeter Twer Reg.-Gericht Koblenz HRB 121 Finanzamt Koblenz Str.Nr. 22 65 10 285 2 www.rhein-zeitung.de<http://www.rhein-zeitung.de/> Von: ANDERSSON Tomas [mailto:tomas.andersson at sca.com] Gesendet: Dienstag, 19. April 2016 13:16 An: Becker Christian <christian.becker at rhein-zeitung.net<mailto:christian.becker at rhein-zeitung.net>> Betreff: RE: [Xymon] Apache webserver performance statistics Hi THere , One simple start is to install webalizer .... And then make a shortcut to it in the xymonmenu. Google for webalizer ... BR //Tomas From: Xymon [mailto:xymon-bounces at xymon.com] On Behalf Of Becker Christian Sent: den 18 april 2016 13:07 To: 'xymon at xymon.com' Subject: [Xymon] Apache webserver performance statistics Hello out there, does anyone know a good way to monitor performance and / or statistics of an Apache webserver 2.4 and present the results to Xymon? Using mod_status together with the apache[=URL] tag in the hosts.cfg file "only" provides me with some simple graphs in the trend pages. I'm thinking about things like http requests per second, response time etc. Should be used on a webserver serving up to 15 virtual hosts. Regards Christian Christian Becker IT-Services August-Horch-Straße 28 D-56070 Koblenz Verleger und Geschäftsführer: Walterpeter Twer Reg.-Gericht Koblenz HRB 121 Finanzamt Koblenz Str.Nr. 22 65 10 285 2 www.rhein-zeitung.de<http://www.rhein-zeitung.de/> ________________________________ This message may contain confidential, proprietary or legally privileged information and is intended for the addressee's use only. Any usage, disclosure, distribution, print or copying of any part of this message is prohibited unless you are the intended recipient. If you receive this message in error, please delete it from any computer and notify the sender. If you suspect that this message may have been altered, please notify the sender. SCA has taken every reasonable precaution to ensure that this e-mail and any attachments to this e-mail has been scanned for viruses. However, SCA does not accept liability for any damage caused by software viruses brought to you by this mail.

4 6

Creating C# Script for Custom Alarm
by Foster.Patch＠accuweather.com 21 Apr '16

21 Apr '16

Hi, My company used to use a VB Script to monitor ASP.NET Requests, but updating to .NET 4.5 will mess up your perf counters, which results in all data being displayed as 0. I have a C# script I want to use to use on servers by putting it in the ext directory of a local machine. I was wondering if maybe anyone had any resources I could use to see how to integrate my script into Xymon. Or maybe if someone has an example C# script that has been integrated with xymon. Thank you using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Diagnostics; namespace PerfCounterQuery { class Program { static void Main(string[] args) { IntPtr userHandle = new IntPtr(0); string hostName = "."; string categoryName = "ASP.NET Applications"; string instanceName = "__Total__"; string[] counterNames = { "Requests Executing" , "Request Wait Time" , "Requests In Application Queue" , "Request Execution Time" }; PerformanceCounterCategory cat = new PerformanceCounterCategory(categoryName, hostName); List<PerformanceCounter> counters = new List<PerformanceCounter>(); foreach (string counterName in counterNames) { if (!PerformanceCounterCategory.CounterExists(counterName, categoryName, hostName)) { Console.WriteLine("perf counter \"" + counterName + "\" does not exist"); return; } counters.Add(new PerformanceCounter(categoryName, counterName, instanceName, hostName)); } foreach (PerformanceCounter counter in counters) Console.WriteLine(counter.CategoryName + " - " + counter.CounterName + " : " + counter.NextValue()); Console.ReadLine(); } } } Foster Patch Web Server Technician AccuWeather

2 1

Xymon disruption every night!
by earle＠isolar.DynDNS.ORG 20 Apr '16

20 Apr '16

> On Feb 17, 2016, at 12:50 AM,"J.C. Cleaver" <cleaver at terabithia.org> wrote: > >> - Why I have a "DNS error" here ? I set up the IP yesterday to this host >> to solve the issue. The "conn" error disappeared since yesterday evening >> but the http error still remains. > > All signs do point to an issue with DNS resolution here. > > Was this a custom compile or are you using a package? If custom, what > version of c-ares is on your system? That's the underlying resolution > library that xymonnet is using by default to handle DNS lookups. The fact > that the 'conn' test remained good after you added the local hosts entry > matches that, since HTTP tests are performed using their own secondary DNS > lookup (to deal with vhosts, etc.) unless the IP is specified there as well. J.C., I just stumbled across this thread from 2 months ago. We're having DNS glitches at my work and it's causing a flood of <hostname>:http "DNS error" alerts in Xymon, which is becoming a real problem. But here's what I don't understand. All of our HTTP-tested hosts are in the "hosts.cfg" file with their short names (instead of FQHNs). So I couldn't understand why DNS was involved since the IP addresses and names were right there in "hosts.cfg" for Xymon to use. Your response - specifically "unless the IP is specified there as well" - implies that there might be another location where I could load the names and addresses of our HTTP-tested hosts, to avoid this problem. (Yes, I know - hosts and IP addresses can change. But I'm in control of that so I can deal.) If this is the case, where is that other location where I can specify the short names/IP addresses for the HTTP tests? Thanks, - Greg

2 1

Apache webserver performance statistics
by christian.becker＠rhein-zeitung.net 18 Apr '16

18 Apr '16

Hello out there, does anyone know a good way to monitor performance and / or statistics of an Apache webserver 2.4 and present the results to Xymon? Using mod_status together with the apache[=URL] tag in the hosts.cfg file "only" provides me with some simple graphs in the trend pages. I'm thinking about things like http requests per second, response time etc. Should be used on a webserver serving up to 15 virtual hosts. Regards Christian Christian Becker IT-Services August-Horch-Straße 28 D-56070 Koblenz Verleger und Geschäftsführer: Walterpeter Twer Reg.-Gericht Koblenz HRB 121 Finanzamt Koblenz Str.Nr. 22 65 10 285 2 www.rhein-zeitung.de<http://www.rhein-zeitung.de/>

1 0

Monitoring file sizes
by colin.coe＠gmail.com 18 Apr '16

18 Apr '16

Hi all I'm trying to monitor some log files on Windows 7 clients. I have this in the analysis.cfg file: --- HOST=%client.* FILE "C:\users\user\Documents\ClientTiming*log" SIZE<500M yellow TRACK FILE "C:\users\user\Documents\ClientTiming*log" SIZE<1G red TRACK FILE "C:\users\user\Documents\ClientTrace*log" SIZE<500M yellow TRACK FILE "C:\users\user\Documents\ClientTrace*log" SIZE<1G red TRACK --- The files are displayed but regardless of the file size, the test stays green. I want the test to go red when the files exceed 1GB and yellow when greater than 500MB. Any ideas where I'm going wrong? Thanks CC

2 3

Getting 500 Server error for criticaleditor.sh
by jborissr＠gmail.com 15 Apr '16

15 Apr '16

I am trying to get the criticaleditor.sh to work. I looked in the error log and it is failing for too many redirects.The acknowledge script works and so does the enable/disable work but when I try to lod the Critical System editor I get the 500 Error. I looked at the configuration file for this and it is blank? Is there some special adjustment I need to make? This is Xymon *Xymon 4.3.25 <http://xymon.sourceforge.net/> * On a Ubuntu 15.10 64 bit -- John J. Boris, Sr.

2 1

ifstat numbers tracking 10Gb network performance incorrectly
by sgroom＠ipac.caltech.edu 14 Apr '16

14 Apr '16

Hi, We have been using xymon as a great tool for tracking various performance metrics across our environment, and being able to drill into historical performance data as a way to understand overall system performance. One of the things we've had difficulty with is the performance stats returned by the "ifstat" module, and specifically on 10Gbit ethernet interfaces. On xymon clients with 10G interfaces, sometimes the recorded metrics get clobbered and recorded incorrectly. At times when we know the server network activity is relatively high (e.g. 3+ Gbits/sec) the xymon ifstat charts might show only 110Mbit/sec. And further, while we know the activity is not constant, the charts are often very "flat" and appear capped at that level. It looks like an artificial cap, like the stats are being clipped at that level. It is as if xymon is mishandling the activity metrics that the client is returning. Or maybe the RRD modules that xymon uses? We are using xymon's default DERIVE types for the ifstat metrics, bytesSent and bytesReceived. I have traced the obytes64 and rbytes64 values returned by the client and they look sane, and match what other network tools on the client are telling us. But those values are are getting mangled somewhere between there and the graphs. Dumping the rrd files I can see the "PDP" (latest update) values there are correct (e.g. ~2e+09), but the "CDP" (5-min average) values are not (e.g. ~1.4e+07). How can that be? Why would RRD do that? Mysteriously, every so often the graphs seem to spring to life, and show reasonable values up above 1Gbit. And sometimes it happens around the time when we're tinkering with one network element or another. But after a while (~minutes to hours), they just as mysteriously revert back to the bogus "capped" values. (the RRD's CDP values reflect this as well.) Most aggravating, as it leaves us unable to believe these charts. So the rrd is _sometimes_ showing good data, but often not. We are working through the process of updating everything (xymon, rrdtool) to latest versions, but wondering if this might be a problem in our configuration that software updates alone won't fix Is there some well-worn advice out there about how to configure xymon to properly gather/store/chart network performance stats for 10Gbit networks, specifically the "ifstat" module? Thanks in advance for any tips, pointers, ideas... Steve Groom sgroom at ipac.caltech.edu

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