We recently migrated our Hobbit 4.2 server to Xymon 4.3.18. For some some clients, I noticed a warning "Xymon WARNING: Flapping status". What is flapping status? how to avoid, but not disable it?
Maik
On 16 October 2014 10:35, Maik Heinelt <maik at vegasystems.com> wrote:
We recently migrated our Hobbit 4.2 server to Xymon 4.3.18. For some some clients, I noticed a warning "Xymon WARNING: Flapping status". What is flapping status?
A flapping status is set when Xymon detects that a test for one server goes into and out of a normal state too often. Rather than logging hundreds of red/green/red/green events, it correlates them together into a "flapping" state for a while.
The default flap count threshold is 5, and the default flap-seconds threshold is 30 minutes. That means if a test flip/flops more than 5 times in 30 seconds or less, the test will go into a flapping state.
More information about flapping detection and behaviour is in the xymond(8) man page. Here's a link:
http://xymon.sourceforge.net/xymon/help/manpages/man8/xymond.8.html
how to avoid, but not disable it?
You have a few options:
- fix the service or test so that it doesn't go red
- increase values for flap-seconds and flap-count by adding the relevant arguments to the xymond execution (in the [xymond] section of tasks.cfg)
- use the delay-red option for xymond (in tasks.cfg), or set delayred or delayyellow for the host (in hosts.cfg)
More information about the delayred setting in hosts.cfg is in the hosts.cfg(5) man page. Here's a link:
http://xymon.sourceforge.net/xymon/help/manpages/man5/hosts.cfg.5.html
Cheers Jeremy
A flapping status means that for that specific Host/test it receives more input from clients than normally expected.
Most of the time it indicates that or
- xymon has been started on a server twice. (With different users perhaps?)
- Two servers with the same hostname defined sent info to the xymon server for that same test.
To troubleshoot: If you open the impacted test check the ip from the client sending the information. Look at the history of the test and see if you can spot a different ip there. Check on the host from the test if xymon runs twice...
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-----Original Message----- From: Xymon [mailto:xymon-bounces at xymon.com] On Behalf Of Maik Heinelt Sent: donderdag, oktober 16, 2014 1:36 To: xymon at xymon.com Subject: [Xymon] Flapping Status? What does it mean?
We recently migrated our Hobbit 4.2 server to Xymon 4.3.18. For some some clients, I noticed a warning "Xymon WARNING: Flapping status". What is flapping status? how to avoid, but not disable it?
Maik
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participants (3)
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jef.jagers＠thomsonreuters.com
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jlaidman＠rebel-it.com.au
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maik＠vegasystems.com