Log Delivery Configuration (Legacy)

Last updated: 2021-03-26 14:33:44


    SCF was fully connected to CLS on January 29, 2021, invocation logs of newly created functions have been delivered to CLS by default since then, and logs can be output in real time. If your function was created before January 29, 2021, but you need to search for and deliver logs, please do so as instructed in this document.


    When SCF is used for function computation, a large number of function execution logs will be generated. You can view and search for logs generated in the last 15 days in Log Query > Advanced Retrieval in the SCF console.


    The advanced search feature is currently in beta test. It is visible only to certain functions and can search for logs collected after it was launched. For more information, please see Log Search Guide.

    If you need to persistently store, deliver, or consume logs and monitor and set alarms on log content, you can deliver logs to the CLS platform as shown below:


    Before using the SCF real-time log service, you need to activate CLS first.


    Creating logset and log topic

    Log in to the CLS console and create a logset and log topic. This document uses the creation of the SCF-test logset and log topic in Guangzhou as an example as shown below:


    For the logset region, please select the region where the SCF service is located. Cross-region log push is not supported currently.

    Configuring CLS

    1. Log in to the SCF console and select Function Service on the left sidebar.
    2. Select the SCF region and namespace at the top of the page and click the function name in the list for which to collect logs in real time.
    3. On the Function Configuration page, click Edit in the top-right corner as shown below:
    4. In Log delivery, click Enable and select the logset and log topic already created for this function. This document uses SCF-test as an example as shown below:
    5. Click Save to connect to the CLS platform.

    Enabling index


    Log retrieval depends on the index configuration of the log topic. Please enable the index as instructed below:

    1. Log in to the CLS console and select Logset on the left sidebar.
    2. Click the ID of a created logset to enter the Basic Info page.
    3. Select Manage on the right of the log topic row to enter the Basic Info page of the log topic.
    4. On the Basic Info page of the log topic, click Index Configuration as shown below:
    5. Click Edit in the top-right corner, enable Key-Value Index, and add Field Name and Field Type according to the following table.


      For functions configured with CLS, to ensure the display effect of the logs in the SCF Console, please toggle on Enable Statistics for the field in key-value index configuration as shown below:

    Field Name Field Type Description
    SCF_FunctionName text Function name.
    SCF_Namespace text Function namespace.
    SCF_StartTime long Invocation start time.
    SCF_LogTime long Log generation time.
    SCF_RequestId text Request ID.
    SCF_Duration long Function execution duration.
    SCF_Alias text Alias.
    SCF_Qualifier text Version.
    SCF_MemUsage double Function runtime memory.
    SCF_Level text Log4J log level. Default value: INFO.
    SCF_Message text Log content.
    SCF_Type text Log type. Platform: platform log, Custom: user log.
    SCF_StatusCode long Function execution status code.
    SCF_RetryNum long Number of retries.

    For more information on other features such as real-time log search, delivery, and consumption, please see the CLS documentation. These features can be used in the CLS console directly.


    Before using the real-time search feature, please make sure that your SCF log service has been connected to the CLS platform and the index has been enabled for the log topic to be searched.

    1. Log in to the CLS console and select Log Search on the left sidebar.
    2. On the Search and Analysis page, select the desired log topic and time and enter the search syntax in the input box. This document uses START as an example.
      The search syntax supports keyword search, fuzzy search, range search, and other search methods. For more information, please see Legacy CLS Search Syntax.
    3. Click Search and Analysis to view real-time log information.

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