Setting Structured and Tag Fields

Setting Structured Fields

You can set extracted fields after cloud structuring. For details, see Table 1.

**Table 1** Rules for configuring structured fields
Structuring Method	Field Name	Field Type Can Be Changed	Field Can Be Deleted
Regular expressions (auto generate)	User-defined. The name must start with a letter and contain only letters and digits.	Yes	Yes
Regular expressions (manually enter)	User-defined. Default names such as field1, field2, and field3 will be used.	Yes	Yes
JSON	Names are set automatically, but you can set aliases for fields.	Yes	Yes
Delimiter	Default names such as field1, field2, field3 are used. You can modify these names.	Yes	Yes
Nginx	Names are set based on Nginx configuration, but you can set aliases for fields.	Yes	Yes
Custom templates	User-defined.	Yes	Yes

When you use regular expressions (manually entered), JSON, delimiters, Nginx, or custom templates to structure logs, field names:

Enter 1 to 64 characters. Use only letters, digits, hyphens (-), underscores (_), and periods (.). Do not use an underscore before another underscore or a period. Do not start or end with a period.

Setting Tag Fields

When configuring log structuring, you can set the tag fields for the log information.

In Step 2 Extract fields, click the Tag Fields tab and Add Field.
In the Field column, enter a name for the tag field.

If you configure tag fields for a structuring rule created before the function of tag fields was brought online, no example values will be shown with the tag fields.
To add more fields, click Add Field.
Click Save.