Splunk Search

How to edit and optimize my search to calculate the average and format top ten results?

atanasmitev
Path Finder

I have a working search that calculates total hits, avg(per_hour), avg(per_minute), top10 IPs with count and value. Now I have a couple of problems that need optimization/or fixing :

  source="mysource" "POST url" evttype=INFO | bucket _time span=24h | stats dc(clientIP) as Unique_IP_Hits, count as Total_Hits by _time  |  eval avg_perhour=(Total_Hits/24) | eval avg_perminute=(avg_perhour/60) | table _time, Total_Hits, Unique_IP_Hits, avg_perhour, avg_perminute| appendcols [searchsource="mysource" "POST url" evttype=INFO | bucket _time span=24h | top clientIP limit=5 by _time| sort -count| eval pair=clientIP." (".count.")" | stats values(pair) as TOP10_IP]

This returns :

Time     Total_Hits         Unique_IP_Hits      perhour       perminute   Top10

Now here are my concerns where I need help:
1) The avg(per_time) is calculated statically , i.e (total/24), so if the span is less than 24 it wont work. There is a | timechart span=X h per_hour(total) command that I can't get to work with this search
2) The top10 spans the upper right cell, I need to either merge all rightmost cells, or find a solution to get (top10 per day)
3) Optional - if we get to work the 1) and 2), is there a more short/nice way of rewriting the search.

I know it's a lot of work and I don't expect prompt response, but will be glad if you could.

Thanks in advance,

1 Solution

somesoni2
Revered Legend

Give this a try

 source="mysource" "POST url" evttype=INFO 
 | eventstats max(_time) as max min(_time) as min by _time | eval durationSec=max-min
 | bucket _time span=1d | stats count , first(durationSec) as durationSec by _time, clientIP 
 | eventstats sum(count) as Total_Hits count as Unique_IP_Hits by _time
 | eval pair=clientIP." (".count.")"
 | sort 0 _time - count    | streamstats count as sno by _time     | where sno<6
 | stats first(Total_Hits) as Total_Hists, first(Unique_IP_Hits) as Unique_IP_Hits
 values(pair) as TOP10_IP first(durationSec) as durationSec by _time
 | eval avg_perhour=(Total_Hits/(floor(durationSec/3600))) 
 | eval avg_perminute=(Total_Hits/(floor(durationSec/3600*60))) 
 | table _time, Total_Hits, Unique_IP_Hits, avg_perhour, avg_perminute,TOP10_IP

View solution in original post

somesoni2
Revered Legend

Give this a try

 source="mysource" "POST url" evttype=INFO 
 | eventstats max(_time) as max min(_time) as min by _time | eval durationSec=max-min
 | bucket _time span=1d | stats count , first(durationSec) as durationSec by _time, clientIP 
 | eventstats sum(count) as Total_Hits count as Unique_IP_Hits by _time
 | eval pair=clientIP." (".count.")"
 | sort 0 _time - count    | streamstats count as sno by _time     | where sno<6
 | stats first(Total_Hits) as Total_Hists, first(Unique_IP_Hits) as Unique_IP_Hits
 values(pair) as TOP10_IP first(durationSec) as durationSec by _time
 | eval avg_perhour=(Total_Hits/(floor(durationSec/3600))) 
 | eval avg_perminute=(Total_Hits/(floor(durationSec/3600*60))) 
 | table _time, Total_Hits, Unique_IP_Hits, avg_perhour, avg_perminute,TOP10_IP

atanasmitev
Path Finder

It would work with some fiddling - max and min are very close , so max-min=0 However, it gives leads where to check

I have already re-done the search using the old ideas, but will use the version above as a know how for future cases:

source="mysource" "url" evttype=INFO | bucket _time span=24h | stats dc(clientip) as uniq, count as total by _time | timechart span=24h per_day(total) as TotalHits, per_day(uniq) as UniqueHits, per_hour(total) as PerHour per_minute(total) as PerMinute | appendcols [search source="mysource" "url" evvtype=INFO | bucket _time span=24h | top clientip limit="N" by _time| sort -count| eval pair=clientip." (".count.")" | stats values(pair) as TOP"N"_IP by _time]

It still needs some small fixes but looks a bit neater than the previous and the per_hour/minute is calculated automatically.
Same trouble with span<24h, but I will check that 🙂

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