CLS provides a low-cost offline log storage solution to search and store massive infrequently accessed logs. The solution applies to scenarios where users do not have real-time log search requirements and logs need to be stored for a long time. It provides the minute-level offline log retrieval capability, meeting users' requirements for backtracking and archiving historical logs. Offline log storage does not support real-time log processing features such as monitoring alarms, streaming consumption, and real-time shipping.
- Currently, the offline log storage solution is in beta testing, and supports only the Beijing, Guangzhou, and Chongqing regions. If the solution is not supported in the region of your log topic, contact smart customer service for application.
- For offline storage in the beta phase, the fees for log write traffic and storage of log topics are exempted.
Create a log topic and set Storage Class to Offline. For more information, please see Managing Log Topic.
Collect logs to the target topic. For more information, please see Collection Methods.
Go to the target log topic search page, and enter a search statement, for example,
status: 200, to create a search task.
The search syntax of offline storage is basically consistent with that of real-time storage. For their differences, please see Collection Methods.
After the search task is created, click Offline Tasks to view the task details.
After the task execution is completed, you can click View to view data.
|Maximum number of offline search tasks||50 tasks per logset|
|Retention time of offline search results||24 hours|
|Maximum number of results supported by an offline search task||500|
|Context search limits||Time range: 1 hour earlier and 1 hour later of the specified point in time; maximum number of search results: 100|
In principle, the search syntax of offline storage is consistent with the Lucene syntax of real-time storage. For more information, please see Syntax and Rules. Offline storage does not support the following syntax:
|Syntax Not Supported by Offline Storage||Example|
|Full-text keyword search and key-value search are used simultaneously, and AND and OR operators exist simultaneously||(a OR key1:value1) AND b
(a AND key1:value1) OR b
|Range query||date:[20020101 TO 20030101]|