If you apply the above query it will return the same result. index="log_in_details" sourcetype=count | rex field=_raw max_match=1 "number\s of\s count\s for.*\:\s (?\d ).*" Now if you remember that earlier we told you that “max_match” takes 1 by default. If we view the data in tabular format then you can see that only the first count of each event has been extracted. In the pre pattern portion we have specified – number of count for (A/B/C) : this potion.Īfter this you will get a result like this. If you want to learn about rex command then click here.Įxample: index="log_in_details" sourcetype=count | rex field=_raw "number\s of\s count\s for.*\:\s (?\d ).*" Now if we write normal regex like this then what will happen? Number of count for (A/B/C) : (), here we want to extract all the digits in a one field. If you do not specify any of the optional arguments, this command runs on the local machine and generates one result with only the time field. If you see carefully then you can notice that all the events are in same pattern i.e. Description Generates the specified number of search results in temporary memory. Where we want to extract all counts, highlighted in the red box in the above figure. Here “n” is for matching “n” number of times and is for matching infinite times. You can specify one of the following modes for the foreach command: Argument. If a mode is not specified, the foreach command defaults to the mode for multiple fields, which is the multifield mode. NOTE: You need to specify any integer (). Description: Tells the foreach command to iterate over multiple fields, a multivalue field, or a JSON array. For multiple matches the whole rex pattern should be similar to all the events. Complex queries involve the pipe character, which feeds the output of the previous query into the next. The values are main, accesscombinedwcookie and purchase respectively. indexmain sourcetypeaccesscombinedwcookie actionpurchase The fields in the above SPL are index, sourcetype and action. We can use to specify infinite times matching in a single event. Begin by specifying the data using the parameter index, the equal sign, and the data index of your choice: indexindexofchoice. Also, a given field need not appear in all of your events. If matching values are more than 1, then it will create one multivalued field. How to use REX command to extract multiple fields in splunk Ask Question Asked 3 years, 7 months ago Modified 3 years, 7 months ago Viewed 4k times 0 I want to be able to extract multiple fields in splunk using rex, but I am only able to extract 3 fields, then it stops working. For example: 'field1','field2','field3value1,field3value2,field3value3'. By using “ max_match” we can control the number of times the regex will match. Certain fields can have multiple values, wherein the values are separated only by a comma but quotes enclose only the entire list of fields. Today we have come with a important attribute, which can be used with “rex” command.
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