I have a number of systems running the PowerShell Xymon client. One and only one of them frequently gives purple alerts on all tests. I haven't found any pattern for this yet. They just seem to happen several times per day and then clear themselves after anything from a few minutes to a few hours. I tried removing and reinstalling the client, but that didn't seem to help.
Any suggestions?
Jaime Kikpole
Director of Technology & Innovations Cairo-Durham Central School District (518) 622-8543, x59500 cairodurham.org <http://www.cairodurham.org>
Technical Support: help at cairodurham.org go.cairodurham.org/techtips
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Purple means that it is not getting updates to the server in a timely manner.
This could be the network is too congested. Or the computer is overloaded. Or even that it is sending messages that are too big (a frequent Windows problem in my experience – log files get so big).
Does it go purple for 1 minute, 5 minutes, 30 minutes?
The shorter suggests that it isn’t finishing the run and sending the update in time. Longer suggests connectivity issues.
From: Jaime Kikpole <jkikpole at cairodurham.org> Sent: Wednesday, July 10, 2019 7:54 AM To: xymon at xymon.com Subject: Frequent purple alerts
I have a number of systems running the PowerShell Xymon client. One and only one of them frequently gives purple alerts on all tests. I haven't found any pattern for this yet. They just seem to happen several times per day and then clear themselves after anything from a few minutes to a few hours. I tried removing and reinstalling the client, but that didn't seem to help.
Any suggestions?
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Jaime Kikpole
Director of Technology & Innovations Cairo-Durham Central School District (518) 622-8543, x59500 cairodurham.org<http://www.cairodurham.org>
Technical Support: help at cairodurham.org<mailto:help at cairodurham.org> go.cairodurham.org/techtips<http://go.cairodurham.org/techtips>
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On Wed, Jul 10, 2019 at 11:44 AM Root, Paul T <Paul.Root at centurylink.com> wrote:
This could be the network is too congested.
That seems unlikely. The Xymon server and clients are all on one of two VM clusters, so there aren't a lot of "hops" and the bandwidth is very high.
The Xymon client is one of two AD controllers, named dir1 and dir2. The one with purple alerts is dir2. On dir1, we also have .1x authentication, but they're otherwise pretty much the same. Their biggest difference is RAM: 8GB for dir1 and 4GB for dir2. Do you think I should increase the RAM? Other than leaving Task Manager open at all times and hoping to catch it as soon as the purple alert occurs, I'm not sure how to check if it's running out of RAM.
Or the computer is overloaded. Or even that it is sending messages that are too big (a frequent Windows problem in my experience – log files get so big).
Any way to check on the log size?
Does it go purple for 1 minute, 5 minutes, 30 minutes?
I just looked at the log. The purple alert durations are roughly 40 minutes each during the last three occasions.
If it helps, this server is an Active Directory domain controller, but it is one of two and the other one (a) has more stuff running on it, such as .1x authentication for our wifi and (b) isn't having this issue.
Thanks for the advice!
Jaime Kikpole
Director of Technology & Innovations Cairo-Durham Central School District (518) 622-8543, x59500 cairodurham.org <http://www.cairodurham.org>
Technical Support: help at cairodurham.org go.cairodurham.org/techtips
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jkikpole＠cairodurham.org
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Paul.Root＠CenturyLink.com