An Overview of Tags in Splunk

Creating Tags

Tags are used to assign names to specific field and value combinations, such as event type, host, source, or source type. This allows for the grouping of field values together, enabling efficient searching and analysis.

Key Facts

  1. Creating Tags: You can create tags in Splunk by adding the tag value to a field-value pair using the “Edit Tags” option. This allows you to define a tag for a specific field value, such as assigning a tag named “server_error” to the status values of 503 or 505.
  2. Annotating Fields: The “tags” command in Splunk can be used to annotate specified fields in your search results with tags. By default, it looks for tags for all fields, but you can specify the fields you want to output the tags from using the argument.
  3. Output Options: The “tags” command provides several optional arguments for controlling the output. You can specify an output field using the “outputfield” argument, which allows you to write the tag names for all fields to a new field. You can also include the field name and field value in the output using the “inclname” and “inclvalue” arguments, respectively.
  4. Viewing Tag Information: To view the tags in a table format, you can use a command like “stats” before the “tags” command. This will display the fields output from the “tags” command in the list of interesting fields.

To create a tag, the tag value is added to a field-value pair using the “Edit Tags” option. For example, a tag named “server_error” can be assigned to events with a status value of 503 or 505.

Annotating Fields with Tags

The “tags” command is used to annotate specified fields in search results with tags. By default, it searches for tags for all fields, but specific fields can be specified using the argument.

Output Options

The “tags” command provides several options for controlling the output. The “outputfield” argument allows for the specification of an output field, where the tag names for all fields are written. The “inclname” and “inclvalue” arguments can be used to include the field name and field value in the output, respectively.

Viewing Tag Information

To view tags in a table format, a command like “stats” can be used before the “tags” command. This will display the fields output from the “tags” command in the list of interesting fields.

Citations

FAQs

How do I create a tag in Splunk?

You can create a tag by adding the tag value to a field-value pair using the “Edit Tags” option.

How do I annotate fields with tags?

Use the “tags” command to annotate specified fields in your search results with tags.

How do I specify which fields to output tags for?

Use the `;` argument in the “tags” command to specify the fields you want to output tags for.

How do I write tag names to a new field?

Use the “outputfield” argument in the “tags” command to specify an output field where the tag names for all fields will be written.

How do I include the field name and field value in the output?

Use the “inclname” and “inclvalue” arguments in the “tags” command to include the field name and field value in the output, respectively.

How do I view tags in a table format?

Use a command like “stats” before the “tags” command to view tags in a table format.

Can I search for events based on tags?

Yes, you can use the “tags” command to search for events based on tags. For example, the following search will find all events with the tag “server_error”:
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| tags | search tag=server_error