Getting Data In

star wildcard in monitor stanza does not look at root directory

tpsplunk
Communicator

I want to write a monitor stanza that picks up a log named "mytest.log" which may be found in either /var/log/app/ or /var/log/app/testlogs/

according to this: http://docs.splunk.com/Documentation/Splunk/4.2.4/Data/Specifyinputpathswithwildcards, it seems possible to do what i want by defining [monitor:///var/log/app/*/mytest.log

specifically described in this section of the table describing use of "": /foo//bar matches the files /foo/bar, /foo/1/bar, /foo/2/bar, etc.

My monitor stanza is:
[monitor:///var/log/app/*/mytest.log]
index = lab
sourcetype = log4j
blacklist = .(gz|bz2|z|zip)$

i expected splunk to pick up both /var/log/app/mytest.log and /var/log/app/testlogs/mytest.log, but instead only the latter is actually picked up. it seems that the base dir of /var/log/app/ is not being searched

Tags (3)
1 Solution

hexx
Splunk Employee
Splunk Employee

The important part in the documentation topic you are referencing is this one :

Wildcard : *
Description : The asterisk wildcard matches anything in that specific directory path segment. Unlike "...", "*" doesn't recurse through any subdirectories.
Regex equivalent : [^/]*

This means that your stanza definition of [monitor:///var/log/app/*/mytest.log] translates into the following regular expression :

/var/log/app/[^/]*/mytest.log

This will not match the following path :

/var/log/app/mytest.log

What you need is for your stanza definition to be [monitor:///var/log/app/...mytest.log].

View solution in original post

hexx
Splunk Employee
Splunk Employee

The important part in the documentation topic you are referencing is this one :

Wildcard : *
Description : The asterisk wildcard matches anything in that specific directory path segment. Unlike "...", "*" doesn't recurse through any subdirectories.
Regex equivalent : [^/]*

This means that your stanza definition of [monitor:///var/log/app/*/mytest.log] translates into the following regular expression :

/var/log/app/[^/]*/mytest.log

This will not match the following path :

/var/log/app/mytest.log

What you need is for your stanza definition to be [monitor:///var/log/app/...mytest.log].

tpsplunk
Communicator

"The asterisk () matches anything in a single path segment; unlike "...", it does not recurse.

For example, /foo/
/bar matches the files /foo/bar, /foo/1/bar, /foo/2/bar, etc.
However, it does not match /foo/1/2/bar . "

it's the piece that says "/foo//bar matches the files /foo/bar " that i think is wrong. it's what led me to believe that /var/log/app//mytest.log would match /var/log/app/mytest.log

hexx
Splunk Employee
Splunk Employee

How so? Please quote the page/block of text that makes you say so, I'd be happy to fix it.

0 Karma

tpsplunk
Communicator

i'll try this out. it makes sense, but it means the documentation inside inputs.conf is wrong

0 Karma
Get Updates on the Splunk Community!

Extending Observability Content to Splunk Cloud

Watch Now!   In this Extending Observability Content to Splunk Cloud Tech Talk, you'll see how to leverage ...

More Control Over Your Monitoring Costs with Archived Metrics!

What if there was a way you could keep all the metrics data you need while saving on storage costs?This is now ...

New in Observability Cloud - Explicit Bucket Histograms

Splunk introduces native support for histograms as a metric data type within Observability Cloud with Explicit ...