Terms	Description
Log Project	Log project is the resource unit used to manage Cloud Log Service. Logs of an independent project/business can usually be mapped to a log project. Each log project can contain multiple log units.
Log Unit	Log unit is the basic unit for collecting, storing, retrieving, and analyzing log data. Log data is managed as log units. Usually, logs from one application/service can be collected into one log unit.
Log	Logs are recorded data generated during the running of an application system, including user operations, interface access, and system errors. Usually, logs are stored as texts on the device of the application system.
Collector	The log collection tool provided by Cloud Log Service.
Host Group	A host group is a set of cloud servers for which you want to collect logs. It is a virtual group. Cloud Log Service manages all cloud servers that require log collection through the collector as host groups.
Collection Configuration	Collection configuration refers to the policy of the collector to execute log collection, including file collection path, and delimiter mode.
Query	Filtering rules are specified by query conditions to return logs that meet the conditions. Currently supports keyword fuzzy queries, full-text queries, and field queries.
Analysis	Constructs various analysis scenarios based on queries, analyzes the query results and returns analysis results.
Data Processing	The process of processing log data, including data normalization, desensitization and filtering. Can be understood as log ETL (extract, transform, and load).
Processing Rules	Data processing scripts, a set of orchestrated data processing logic codes.

Cloud Log Service