Alert & Graph not same.

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safuanmansor
Posts: 59
Joined: Mon Jul 16, 2018 9:16 pm

Alert & Graph not same.

Post by safuanmansor »

Hi Support team,

Recently we have receive an alert stating that the CPU utilization is at 94% but upon checking with the performance graph, the value are not same.

Alert Message
_______________
**PROBLEM Service Alert:
<hostname removed>:CPU Usage 1min is WARNING**
Date:Sat Mar 7 18:32:20 08 2020

Additional Info:
WARNING: CPU Usage = 94%

cpuusage.jpeg
cpuusage.jpeg
Is it something wrong with my graph setting, plugin or anything.
Your help are much appreciated.

Regards,
Safuan
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scottwilkerson
DevOps Engineer
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Joined: Tue Nov 15, 2011 3:11 pm
Location: Nagios Enterprises
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Re: Alert & Graph not same.

Post by scottwilkerson »

You are looking at 7 day graph which will consolidate and average data points. On a 24 hour graph the peak may have been higher
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safuanmansor
Posts: 59
Joined: Mon Jul 16, 2018 9:16 pm

Re: Alert & Graph not same.

Post by safuanmansor »

Correct me if i'm wrong, only for 24 hour graph will have the actual value of check/notification because of the way RRD database do the averaging.

If that's the case, is there any way or workaround so that we can always have the actual value always being populated on the graph?
We have situation where the incident manager highly dependent on nagios xi graph to review the report (normally received 2/3 days after the incident resolved).

Thanks.
scottwilkerson
DevOps Engineer
Posts: 19396
Joined: Tue Nov 15, 2011 3:11 pm
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Re: Alert & Graph not same.

Post by scottwilkerson »

safuanmansor wrote:Correct me if i'm wrong, only for 24 hour graph will have the actual value of check/notification because of the way RRD database do the averaging.
this is correct
safuanmansor wrote:If that's the case, is there any way or workaround so that we can always have the actual value always being populated on the graph?
We have situation where the incident manager highly dependent on nagios xi graph to review the report (normally received 2/3 days after the incident resolved).
the only way to change the graphing would be to modify the rra.cfg, delete all existing graphs and recreate them

Modifying the rra.cfg is described below, but, be sure you read the whole article as changes will significantly increase the size of the rrd files and disk space used on the system

https://support.nagios.com/kb/article/n ... g-768.html
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safuanmansor
Posts: 59
Joined: Mon Jul 16, 2018 9:16 pm

Re: Alert & Graph not same.

Post by safuanmansor »

Thanks for the support scottwilkerson.
You may clone this topic
scottwilkerson
DevOps Engineer
Posts: 19396
Joined: Tue Nov 15, 2011 3:11 pm
Location: Nagios Enterprises
Contact:

Re: Alert & Graph not same.

Post by scottwilkerson »

safuanmansor wrote:Thanks for the support scottwilkerson.
You may clone this topic
Great!

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