Splunk Search

How to get the average of two fields from two different indexes by time?

sam_jacob
Path Finder

I'm trying to get the average memory and CPU usage by the hour. Unfortunately, that information is stored on two different indexes, so I appended the CPU results with the memory results, and used bucket to get the result hourly. But I'm now getting the average of each hour.

index=[redacted] host=[redacted] sourcetype=[redacted] earliest=-24h@h latest=@h 
| multikv fields memUsedPct 
| append [search index=[redacted] host=[redacted] sourcetype=cpu earliest=-24h@h latest=@h | multikv fields pctIdle | search CPU=all | eval cpuUsedPct=100-pctIdle] 
| sort _time 
| bucket _time span=60m 
| eval Time=strftime(_time, "%m/%d/%y %H:%M")
| stats avg(cpuUsedPct) as "CPU Percent" by Time, avg(memUsedPct) as Percent by Time 

When I execute the search, I get the error: Error in 'stats' command: Repeated group-by field 'Time'. and I'm assuming this is because I get the average of two different fields by Time

Tags (3)
0 Karma
1 Solution

sam_jacob
Path Finder

I was able to figure it out what I was doing wrong. This is what the correct query should look like:

index=[redacted] host=[redacted] sourcetype=[redacted] earliest=-24h@h latest=@h 
| multikv fields memUsedPct 
| append [search index=[redacted] host=[redacted] sourcetype=cpu earliest=-24h@h latest=@h | multikv fields pctIdle | search CPU=all | eval cpuUsedPct=100-pctIdle] 
| sort _time 
| bucket _time span=60m 
| eval Time=strftime(_time, "%m/%d/%y %H:%M")
| stats avg(cpuUsedPct) as "CPU Percent", avg(memUsedPct) as Percent by Time 

View solution in original post

sam_jacob
Path Finder

I was able to figure it out what I was doing wrong. This is what the correct query should look like:

index=[redacted] host=[redacted] sourcetype=[redacted] earliest=-24h@h latest=@h 
| multikv fields memUsedPct 
| append [search index=[redacted] host=[redacted] sourcetype=cpu earliest=-24h@h latest=@h | multikv fields pctIdle | search CPU=all | eval cpuUsedPct=100-pctIdle] 
| sort _time 
| bucket _time span=60m 
| eval Time=strftime(_time, "%m/%d/%y %H:%M")
| stats avg(cpuUsedPct) as "CPU Percent", avg(memUsedPct) as Percent by Time 

ppablo
Retired

Hi @sam_jacob

Could you actually paste your answer/final working search as a formal answer in the "Enter your answer..." box below? That way I can accept that for you as the correct solution to resolve this post instead of it floating around as unanswered. Thanks!

sam_jacob
Path Finder

Thanks, yea I just submitted the answer. Once it gets approved I'll select it.

0 Karma

ppablo
Retired

great, thanks @sam_jacob cheers!

0 Karma
Get Updates on the Splunk Community!

Stay Connected: Your Guide to May Tech Talks, Office Hours, and Webinars!

Take a look below to explore our upcoming Community Office Hours, Tech Talks, and Webinars this month. This ...

They're back! Join the SplunkTrust and MVP at .conf24

With our highly anticipated annual conference, .conf, comes the fez-wearers you can trust! The SplunkTrust, as ...

Enterprise Security Content Update (ESCU) | New Releases

Last month, the Splunk Threat Research Team had two releases of new security content via the Enterprise ...