The general concept of a backreference is the same between both. Splunk's rex/regex processing in ingestion and during a search is powered by the Perl Compatible Regular Expressions library. There are syntactic and execution differences between PCRE & GNU SED's regular expressions, but other forums and sites would be appropriate for detailing out those exact differences. I think I have also heard that there may be some (recently released / soon coming) products/features that may leverage the RE2 regex library instead (partly from being Golang based and also some more control on predictability in time/complexity bounds of execution). Of course RE2 has it's own set of nuanced differences from PCRE & GNU SED, but general concepts are similar, and it too can be tested in regex101.com (pick the Golang flavor instead of the default PCRE) ... View more

You probably want to reach out to the developer of the custom addon to help with troubleshooting, if they still support it. Quick search for prtglivedata and I found this app: https://splunkbase.splunk.com/app/3282 which is only marked as being supported on Splunk 7. (Which is of course End of life, and before the Python3 transition), but I'm not sure if thats your app or not. These conf file configurations by themselves are slightly odd since they have both  chunked = true and arguments that only make sense for the original Intersplunk protocol. From commands.conf.spec chunked = <boolean> * Whether or not the search command supports the new "chunked" custom search command protocol. * If set to "true", this command supports the new "chunked" custom search command protocol, and only the following commands.conf settings are valid: * 'is_risky' * 'maxwait' * 'maxchunksize' * 'filename' * 'command.arg.<N>' * 'python.version', and * 'run_in_preview'. * If set to "false", this command uses the legacy custom search command protocol supported by Intersplunk.py. * Default: false   For reference... the "new" protocol came about a really long time ago. (Splunk SDK changes to support chunked were back in 2015 so something like Splunk 6? )  You could try to look in the search log (see the job inspector), splunkd log, or python log (index=_internal) to see if any errors or stacktraces related to your script are emitted.  ... View more

@sshubh People answering posts on here are doing so by donating their time. As such you should not be preemptively tagging people to help with your question. You'll attract responses by showing what you've tried, what result you got and how you thought it should be different, and showing a willingness to learn. You posted the exact same question a few days ago, and were given an answer. Instead of asking again with no additional information, you could follow up with what is not working for you or what you're not understanding with that answer. It may help to break down the problem into steps and check each one. Start with are your fields extracted from your events properly? Do you get all values of the multi-valued fields as you expected on each event? Are your field names lined up between the bought and sold records so you can correlate them together? Do you have a field marking a result as a bought or a sold transaction already? ITWhisperer did some field manipulation and extraction with eval.  Assuming you have the above done correctly, did you know that using makeresults and eval we can actually simulate your example data set with a Splunk Search and anyone can build from it? (names of fields might be slightly different, but this should be where you are at this stage.  | makeresults count=8 | streamstats count | eval AccountName=case(count in(1,2,6),"ABC", count=3,"DEF", true(),"EPF"), TransactionType=if(count<=5,"bought","sold"), BookId=case(count=1,split("book1,book2,book3",","),count in (2,5,7,8),"book1",count=3,split("book1,book2",","),count=4,split("book1,book3",","),count=6,"book2") | fields - _time count If you don't have the above done correctly, then anything afterwards isn't going to work, and you should be talking about that problem first. (I'll also note that field names are always case sensitive) From this point IT Whisperer already showed you how stats can group by multiple fields, and even showed you the trick with eval and french braces {} in order to create fields with names based on the values of other fields, and running stats multiple times to combine things down.  You can use the same tricks in a slightly different order to not need the fillnull command (but it's still useful to know).  | eval T_{TransactionType}=1 | stats count(T_*) as * by AccountName BookId | stats list(BookId) list(bought) list(sold) by AccountName   I leave the total books calculation as an exercise for you, but also the hint that stats can perform multiple statistical functions in a single pass on multiple different fields of the input data set. ... View more

If there isn't a boot event (i.e. an event with the words "Linux version" in it) for a particular host in your time window, boot_time will come back as blank...  This is the problem I was mentioning: But the more practical problem you'll run into is the unbounded nature of how far in the past boot time can be... thus requiring this search to become almost an All Time search which doesn't scale well at all.    ... View more

The key words there are "for this historical scheduled search"... So likely looking at a search job that's taking longer than its scheduled period to execute. I'd start with looking at the runtimes of the skipping search you've already found. (of course not ruling out something crazy like the job wasn't running but the SHC captain thought it was...)   ... View more

So for the idea of correlating multiple events together, you can do this in a single pass without a join e.g.  index=abc sourcetype=foo host=hostabc | eval boot_time=case(searchmatch("Linux version"),_time) | stats latest(_time) latest(boot_time) by host | rename latest(*) -> * | convert timeformat="%F %T" ctime(_time) as Latest_Event_Time ctime(btoot_time) as Boot_Time | eval delta=_time-boot_time, UP_Time = tostring(delta,"duration") | fields host Boot_Time Latest_Event_Time UP_Time   But the more practical problem you'll run into is the unbounded nature of how far in the past boot time can be... thus requiring this search to become almost an All Time search which doesn't scale well at all.  If you can add data sources... instead of relying just on this log, you could have a scripted input that captures the output of `uptime` on a regular basis.  But if not, another option may be to maintain a lookup containing the last boot time of a host, and pull that data in at search time instead... that way your search for looking at the latest events can be a much smaller window. Doing this off the top of my head, assuming a KVStore host_boots keyed by host, something like: index=abc sourcetype=foo host=hostabc | eval boot_time=case(searchmatch("Linux version"),_time) | stats latest(_time) latest(boot_time) by host | rename latest(*) -> * | lookup host_boots host OUTPUT boot_time AS last_boot | eval boot_time=coalesce(boot_time,last_boot) | fields - last_boot | outputlookup append=t key_field=host host_boots | convert timeformat="%F %T" ctime(_time) as Latest_Event_Time ctime(btoot_time) as Boot_Time | eval delta=_time-boot_time, UP_Time = tostring(delta,"duration") | fields host Boot_Time Latest_Event_Time UP_Time The question then becomes if you pull back this lookup for unseen hosts or not... and or if updating in this way makes sense (since the _time would get updated as frequently as the boot_time field...) and some other nuances... ... View more

So you might need to upgrade MLTK to 5.3.3, or follow the workaround to manually update conf files as listed in the Known issues under 5.3.1: https://docs.splunk.com/Documentation/MLApp/5.3.1/User/Knownissues ... View more

As it comes out of the box, the Splunk Add-on for Cisco ESA has no UI components.... If it was there'd be a default/data/ui folder which is missing... and the app.conf even states this isn't a visible app:   $ tar tzvf splunk-add-on-for-cisco-esa_160.tgz drwxr-xr-x 1001/121 0 2022-07-25 01:18 Splunk_TA_cisco-esa/ drwxr-xr-x 1001/121 0 2022-07-25 01:18 Splunk_TA_cisco-esa/LICENSES/ -rw-r--r-- 1001/121 85947 2022-07-25 01:18 Splunk_TA_cisco-esa/LICENSES/LicenseRef-Splunk-8-2021.txt -rw-r--r-- 1001/121 165 2022-07-25 01:18 Splunk_TA_cisco-esa/README.txt -rw-r--r-- 1001/121 1916 2022-07-25 01:18 Splunk_TA_cisco-esa/THIRDPARTY -rw-r--r-- 1001/121 11 2022-07-25 01:18 Splunk_TA_cisco-esa/VERSION -rw-r--r-- 1001/121 1551 2022-07-25 01:18 Splunk_TA_cisco-esa/app.manifest drwxr-xr-x 1001/121 0 2022-07-25 01:18 Splunk_TA_cisco-esa/default/ -rw-r--r-- 1001/121 473 2022-07-25 01:18 Splunk_TA_cisco-esa/default/app.conf -rw-r--r-- 1001/121 4770 2022-07-25 01:18 Splunk_TA_cisco-esa/default/eventtypes.conf -rw-r--r-- 1001/121 24749 2022-07-25 01:18 Splunk_TA_cisco-esa/default/props.conf -rw-r--r-- 1001/121 1208 2022-07-25 01:18 Splunk_TA_cisco-esa/default/tags.conf -rw-r--r-- 1001/121 50633 2022-07-25 01:18 Splunk_TA_cisco-esa/default/transforms.conf drwxr-xr-x 1001/121 0 2022-07-25 01:18 Splunk_TA_cisco-esa/lookups/ -rw-r--r-- 1001/121 85 2022-07-25 01:18 Splunk_TA_cisco-esa/lookups/cisco_esa_authentication_action_lookup.csv -rw-r--r-- 1001/121 617 2022-07-25 01:18 Splunk_TA_cisco-esa/lookups/cisco_esa_email_action_lookup.csv -rw-r--r-- 1001/121 920 2022-07-25 01:18 Splunk_TA_cisco-esa/lookups/cisco_esa_proxy_status_action_lookup.csv -rw-r--r-- 1001/121 309 2022-07-25 01:18 Splunk_TA_cisco-esa/lookups/cisco_esa_vendor_info_lookup_160.csv drwxr-xr-x 1001/121 0 2022-07-25 01:18 Splunk_TA_cisco-esa/metadata/ -rw-r--r-- 1001/121 105 2022-07-25 01:18 Splunk_TA_cisco-esa/metadata/default.meta drwxr-xr-x 1001/121 0 2022-07-25 01:18 Splunk_TA_cisco-esa/static/ -rw-r--r-- 1001/121 3348 2022-07-25 01:18 Splunk_TA_cisco-esa/static/appIcon.png -rw-r--r-- 1001/121 3348 2022-07-25 01:18 Splunk_TA_cisco-esa/static/appIconAlt.png -rw-r--r-- 1001/121 6738 2022-07-25 01:18 Splunk_TA_cisco-esa/static/appIconAlt_2x.png -rw-r--r-- 1001/121 6738 2022-07-25 01:18 Splunk_TA_cisco-esa/static/appIcon_2x.png $ tar xOzvf splunk-add-on-for-cisco-esa_160.tgz Splunk_TA_cisco-esa/default/app.conf | grep visible Splunk_TA_cisco-esa/default/app.conf is_visible = false   (Lots of addons don't ship UI pieces, especially if they're only doing non-ui related things like setting up props and transforms, or lookup enrichments) Without knowing your stack or this app in depth, I suspect what is actually happening is that someone set the app to visible in your environment (which isn't needed), and more likely than not some other app is globally exporting its nav default.xml with a default view set that isn't being shared globally, thus when you open the app, you try to get to a view that isn't available and thus 404. (Using Settings > User Interface > Navigation Menus you can see if there's a nav bar visible in this app's context from a different app) Or there could be other quirks... but this add on has no UI components out of the box... ... View more