![]() KV Store Lookup : In this type of lookup, it populates your event data with fields pulled from your App Key Value Store (KV Store) collections.Therefore, it is also called as “Scripted lookup”. It can use Python scripts or binary executable to get field values from an external source. External Lookup : In this type of lookup, it populates your event data from an external source, say a DNS server.They can have multiple instances of the same value. There must be at least two columns representing field with a set of values. Therefore, it is also called as a “static lookup”. It populates the event data with fields and represents it in the static table of data. CSV Lookup : As the name itself says, a CSV lookup pulls data from CSV files.If you see the image below, these are the different types of Splunk lookup which I will be explaining in detail below. It can translate fields into more meaningful information at search time.Splunk lookup command can accept multiple event fields and destfields. ![]() It enriches the data while comparing different event fields.Splunk Lookup helps you in adding a field from an external source based on the value that matches your field in the event data.A lookup table is a mapping of keys and values.Suppose you have product_id=2 and the name of the product is present in a different file, then Splunk lookup will create a new field – ‘product_name’ which has the ‘product_id’ associated with it. Lookup can help you to map the details of the product in a new field. For example, you have a product_id value which matches its definition in a different file, say a CSV file. You might be familiar with lookups in Excel. So, let’s get started with Splunk Lookup. I have also explained how these fields can be extracted in different ways. ![]() On the other hand, Splunk fields help in enriching your data by providing a specific value to an event. I will discuss why lookups are important and how you can associate data from an external source by matching the unique key value. In this blog, I am going to explain the following concept – Splunk lookup, fields and field extraction. Use the eval command to add different fields to each set of results.In my previous blog, I explained Splunk Events, Event types and Tags that help in simplifying your searches. Search for events from both index a and b. Index=a | eval type = "foo" | append Examples Example 1: The following subsearch example with the append command is not the same as using the multisearch command. ![]() Unlike the append command, the multisearch command does not run the subsearch to completion first. Therefore the multisearch command is not restricted by the subsearch limitations. With the multisearch command, the events from each subsearch are interleaved. Generating commands use a leading pipe character and should be the first command in a search. The multisearch command is an event-generating command. To learn more, see About subsearches in the Search Manual. See the search command for detailed information about the valid arguments for. Required arguments Syntax: "" Description: At least two streaming searches must be specified. For more information, see Types of commands in the Search Manual. Examples of streaming searches include searches with the following commands: search, eval, where, fields, and rex. This command requires at least two subsearches and allows only streaming operations in each subsearch. The multisearch command is a generating command that runs multiple streaming searches at the same time. ![]()
0 Comments
Leave a Reply. |