Generates a list of terms or indexed fields from each bucket of event indexes.
Watch this Splunk How-To video, Using the Walklex Command, to see a demonstration about how to use this command.
walklex command does not work on hot buckets. This command only works on warm or cold buckets, after the buckets have a merged lexicon file or single time-series index (tsidx) file.
Due to the variable nature of
.tsidx files, the
walklex command does not always return consistent results.
The required syntax is in bold.
- | walklex
- [ type=<walklex-type> ]
- [ prefix=<string> | pattern=<wc-string> ]
- [ splunk_server=<wc-string> ]
- [ splunk_server_group=<wc-string> ]...
- Syntax: index=<index-name> index=<index-name> ...
- Description: Limits the search to one or more indexes. For example,
- prefix | pattern
- Syntax: prefix=<string> | pattern=<wc-string>
- Description: Limits results to terms that match a specific pattern or prefix. Either prefix or pattern can be specified but not both. Includes only buckets with a merged_lexicon file or a single tsidx file. This means that hot buckets are generally not included.
- Default: pattern=*
- Syntax: splunk_server=<wc-string>
- Description: Specifies the distributed search peers from which to return results.
- If you are using Splunk Cloud Platform, omit this parameter.
- If you are using Splunk Enterprise, you can specify only one
splunk_serverargument. However, you can use a wildcard when you specify the server name to indicate multiple servers. For example, you can specify
localto refer to the search head.
- Default: All configured search peers return information
- Syntax: splunk_server_group=<wc-string>
- Description: Limits the results to one or more server groups. You can specify a wildcard character in the string to indicate multiple server groups with similar names.
- If you are using Splunk Cloud Platform, omit this parameter.
- Default: None
- Syntax: type = ( all | field | fieldvalue | term )
- Description: Specifies which type of terms to return in the lexicon. See Usage for more information about using the
fieldto return only the unique field names in each index bucket.
fieldvalueto include only indexed field terms.
termto exclude all indexed field terms of the form
- Default: all
walklex command is a generating command, which use a leading pipe character. The
walklex command must be the first command in a search. See Command types.
When the Splunk software indexes event data, it segments each event into raw tokens using rules specified in
segmenters.conf file. You might end up with raw tokens that are actually key-value pairs separated by an arbitrary delimiter such as an equal ( = ) symbol.
The following search uses the
where commands to find the raw tokens in your index. It uses the
stats command to count the raw tokens.
| walklex index=<target-index> | where NOT like(term, "%::%") | stats sum(count) by term
Return only indexed field names
type=field argument to have
walklex return only the field names from indexed fields.
The indexed fields returned by
walklex can include default fields such as
punct, and so on. It can also include additional indexed fields configured as such in
transforms.conf and created with the
INDEXED_EXTRACTIONS setting or other
WRITE_META methods. The discovery of this last set of additional indexed fields is likely to help you with accelerating your searches.
Return the set of terms that are indexed fields with indexed values
type=fieldvalue argument to have
walklex return the set of terms from the index that are indexed fields with indexed values.
type=fieldvalue argument returns the list terms from the index that are indexed fields with indexed values. Unlike the
type=field argument, where the values returned are only the field names themselves, the
type=fieldvalue argument returns indexed field names that have any field value.
For example, if the indexed field term is
runtime::0.04, the value returned by the
type=fieldvalue argument is
runtime::0.04. The value returned by the
type=field argument is
Return all TSIDX keywords that are not part of an indexed field structure
type=term to have
walklex return the keywords from the TSIDX files that are not part of any indexed field structure. In other words, it excludes all indexed field terms of the form
Return terms of all three types
When you do not specify a type, or when you specify
walklex uses the default
type=all argument. This causes
walklex to return the terms in the index of all three types:
When you use
type=all, the indexed fields are not called out as explicitly as the fields are with the
type=field argument. You need to split the term field on
:: to obtain the field values from the indexed term.
walklex command applies only to event indexes. It cannot be used with metrics indexes.
People who have search filters applied to one or more of their roles cannot use
walklex unless they also have a role with either the run_walklex capability or the admin_all_objects capability. For more information about role-based search filters, see Create and manage roles with Splunk Web in Securing the Splunk Platform. For more information about role-based capabilities, see Define roles on the Splunk platform with capabilities, in Securing the Splunk Platform.
1. Return the total count for each term in a specific bucket
The following example returns all of the terms in each bucket of the
_internal index and finds the total count for each term.
| walklex index=_internal | stats sum(count) BY term
2. Specifying multiple indexes
The following example returns all of the terms that start with
foo in each bucket of the
| walklex prefix=foo index=_internal index=_audit
3. Use a pattern to locate indexed field terms
The following example returns all of the indexed field terms for each bucket that end with
bar in the
| walklex pattern=*bar type=fieldvalue index=_internal
4. Return all field names of indexed fields
The following example returns all of the field names of indexed fields in each bucket of the
| walklex type=field index=_audit
This documentation applies to the following versions of Splunk® Enterprise: 8.1.0, 8.1.1, 8.1.2, 8.1.3, 8.1.4, 8.1.5, 8.1.6, 8.1.7, 8.1.8, 8.1.9, 8.1.10, 8.1.11, 8.1.12, 8.1.13, 8.2.0, 8.2.1, 8.2.2, 8.2.3, 8.2.4, 8.2.5, 8.2.6, 8.2.7, 8.2.8, 8.2.9, 8.2.10, 9.0.0, 9.0.1, 9.0.2, 9.0.3, 9.0.4
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