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TDSQL-C for MySQL
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    Viewing Audit Logs

    Last updated: 2024-10-25 10:19:02
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      This document describes how to view database audit logs and their list field.
      Note:
      A new version of the audit log page was released on July 12, 2023. The new version added a new audit log search field "Scanned Rows". For existing audit logs before this release date, the data in this field will be displayed as "-", and the corresponding downloaded files and APIs will be displayed as "-1".
      The unit of the audit log field "Execution Time" in the console and downloaded audit log files has been unified to milliseconds.
      The unit of the audit log field "CPU Time" in the console and downloaded audit log files has been unified to microseconds.
      The unit of the "Timestamp" field in the audit log files has been updated to display millisecond-level timing.
      When searching audit logs, the character used to separate multiple search items is changed from comma to line break.
      After enabling database audit, the storage regions of audit log files for instances in Tianjin, Taipei (China), and Shenzhen are different. Refer to the table below for the corresponding storage regions.
      Instance Region
      Audit Log Storage Region
      Tianjin
      Beijing
      Taipei (China)
      Hong Kong (China)
      Shenzhen
      Guangzhou

      Prerequisite

      You have enabled audit service. For more information, see Enabling Audit Service.

      Viewing Audit Logs

      Note:
      The audit log display time is down to milliseconds, facilitating more precise sorting and problem analysis of SQL commands.
      1. Log in to the TDSQL-C for MySQL console.
      2. Click Database Audit on the left sidebar.
      3. After selecting a region at the top, click on Audit Status on the Audit Instance page, and select the Enabled option to filter instances that have enabled audit.
      4. Find the target instance in the audit instance list, or search for it by resource attribute in the search box, and click View Audit Log in the Operation column to enter the Audit Log tab and view logs.
      

      Tool list

      In the audit instance filter box, you can choose to switch to other audit instances that have enabled the audit service.
      In the time box, the last 1 hour is selected by default. You can quickly select another time period (last 3 hours, last 24 hours, or last 7 days), or enter a custom time period, to view relevant audit logs within the chosen time period.
      Note:
      You can select any time period with data for search. Up to the first 60,000 eligible records can be displayed.
      In the search box, select the search items (such as SQL Details, Client IP, Database Account, Database Name, Error Code, SQL Type, Risk Level, Execution Time (ms), Lock Wait Time (μs), IO Wait Time (μs), Transaction Duration (μs), CPU Time (μs), Audit Rule, Thread ID, Transaction ID, Scanned Rows, Affected Rows, Returned Rows, etc.) for search. This allows you to view relevant audit results. Multiple keywords are separated by line break.
      Search Item
      Operator
      Description
      SQL Details
      Include-OR-Segment
      Rule Description
      Enter the details of the SQL command and separate multiple keywords by line break.
      The match items in the SQL command details search box are divided into three levels. The first level sets the forward and reverse matching modes (Include, Exclude); the second level sets the logical relationship between keywords (OR, AND); the third level sets each keyword matching mode (Segment, Wildcard).
      Note:
      The search of SQL command details is case-insensitive.
      Include and Exclude match modes are supported.
      Keywords support "OR" and "AND" logical match. "OR" means a "union" relationship between different keywords, and "AND" means an "intersection" relationship between different keywords.
      Each keyword supports two match modes: "segment" and "wildcard". "Segment" means that each keyword in the SQL command details needs to be accurately matched, and "wildcard" means that fuzzy match is supported for each keyword in the SQL command details.
      Example
      For example, if the SQL command details are SELECT * FROM test_db1 join test_db2 LIMIT 1;,
      In the "Include (segment)" search mode, you can search by segment keywords such as "SELECT", "select from", "", "SELECT * FROM test_db LIMIT 1;", "from Test_DB". However, you can't search by wildcard keywords such as "SEL", "sel", and "test".
      In the "Include (wildcard)" search mode, you can't search by wildcard keywords such as "SEL", "sel", "test", and "DB".
      In the "Include (AND)" search mode, multiple keywords are in an "AND" relationship, which means you can query all SQL commands containing "SELECT" and "test_db" by entering keywords such as "SELECT" and "test_db".
      In the "Include (OR)" search mode, multiple keywords are in an "OR" relationship, which means you can query all SQL commands containing "test_db1" and "test_db2" by entering keywords such as "test_db1" and "test_db2".
      Include-AND-Segment
      E‌xclude-AND-Segment
      ‌Include-OR-Wildcard
      ‌Include-AND-Wildcard
      ‌E‌xclude-AND-Wildcard
      Client IP
      Include Exclude Equal to Not equal to
      You can filter client IP addresses by using the wildcard "" and separate them by line break. For example, if you enter "client IP: 9.223.23.2", IP addresses that start with "9.223.23.2" will be searched.
      User Account
      Include Exclude Equal to Not equal to
      Enter a user account and separate multiple keywords by line break.
      Database Name
      Include Exclude Equal to Not equal to
      Enter a database name and separate multiple keywords by line break.
      Note:
      The search of database name is case-insensitive.
      Error Code
      Equal to Not equal to
      Enter an error code and separate multiple keywords by line break.
      SQL Type
      Equal to Not equal to
      Pull down the list to select a SQL type (ALTER, CHANGEUSER, CREATE, DELETE, DROP, EXECUTE, INSERT, LOGOUT, OTHER, REPLACE, SELECT, SET, UPDATE). You can select multiple types.
      Risk Level
      Include Exclude
      Select low, medium, or high risk to filter the audit logs that meet the risk level settings of the rule template.
      It also supports empty inputs, which indicate filtering the audit logs without risk level tags in the historical inventory.
      Execution Time (ms)
      Range format
      Enter an execution time in the format of M-N, such as 10-100 or 20-200.
      Lock Wait Time (μs)
      Range format
      Enter a lock wait time in the format of M-N, such as 10-100 or 20-200.
      IO Wait Time (μs)
      Range format
      Enter an IO wait time in the format of M-N, such as 10-100 or 20-200.
      Transaction Duration (μs)
      Range format
      Enter a transaction duration in the format of M-N, such as 10-100 or 20-200.
      CPU Time (μs)
      Range format
      Enter a CPU time in the format of M-N, such as 10-100 or 20-200.
      Audit Rule
      Include Exclude
      Display the template IDs and names of all rule templates in a specific region. You can filter the audit logs meeting a specific rule template.
      Supports empty inputs, which indicate filtering the audit logs without audit rule tags and the full audit logs not meeting rules in the historical inventory.
      Supports searching for audit rules by rule template ID and rule template name.
      Supports choosing multiple rule templates simultaneously.
      Thread ID
      Equal to
      Not equal to
      Enter a thread ID and separate multiple keywords by line break.
      Transaction ID
      Equal to Not equal to
      Enter a transaction ID and separate multiple keywords by line break.
      Note：
      Only the kernel minor version 2.1.11 and later versions of TDSQL-C for MySQL 5.7 support the Transaction ID field, which is not supported by TDSQL-C for MySQL 8.0.
      Scanned Rows
      Range format
      Enter a range of scanned rows in the format of M-N, such as 10-100 or 20-200.
      Affected Rows
      Range format
      Enter a range of affected rows in the format of M-N, such as 10-100 or 20-200.
      Returned Rows
      Range format
      Enter a range of returned rows returned in the format of M-N, such as 10-100 or 20-200.

      Log list

      The Returned Rows field represents the specific number of rows returned by executing the SQL command, which is mainly used to determine the impact of SELECT commands.
      

      Audit Fields

      The following fields are supported in TDSQL-C for MySQL audit logs. On the Audit Log tab, click the download icon. After download, click the file list icon. On the page redirected to, copy the download address and access it to get the complete SQL audit logs.
      
      Note:
      Currently, you can download audit log files of a database instance only at the Tencent Cloud private network address by using a CVM instance in the same region. For example, to download the audit logs of database instances in Beijing region, download them with a CVM instance in Beijing.
      Log files are valid for 24 hours. Download them promptly.
      Up to 30 log files can be retained for one database instance. Delete files promptly after download.
      If the status is Failed, there may be too many logs. You can download them in batches by narrowing down the time range.
      No.
      Field
      Remarks
      1
      Time
      The exact timestamp when an operation is performed.
      2
      Risk Level
      The risk level of an operation, categorized as low risk, medium risk, and high risk. For full audit, the risk level of logs that do not meet any audit rules will be displayed as "-".
      3
      Client IP
      IP address of the client initiating a database operation.
      4
      Database Name
      Name of the database involved in an operation.
      5
      User Account
      User account executing an operation.
      6
      SQL Type
      Type of SQL statements, such as SELECT, INSERT, UPDATE, and DELETE.
      7
      SQL Details
      The specific SQL command text being executed.
      8
      Error Code
      When an error occurs during the execution of an SQL statement, an error code is generated. The error code is an integer used to identify a specific error type, with 0 indicating success.
      9
      Thread ID
      Unique thread ID for each client connected to a database, which is used to identify which client executed a specific operation.
      10
      Transaction ID
      Unique ID for each transaction in the storage engine that supports transactions (such as InnoDB), which is used to identify a specific transaction.
      11
      Scanned Rows
      The number of rows scanned in a database during query execution, which can help you understand the query efficiency.
      12
      Returned Rows
      The number of rows returned in the query results, which can help you understand the result set size.
      13
      Affected Rows
      The number of rows actually affected when a modification operation (such as INSERT, UPDATE, or DELETE) is performed on a data table, which can help you understand the impact scope of the operation.
      14
      Execution Time (ms)
      The time from starting execution of an SQL statement to finishing it, in milliseconds. This field can help you understand the query performance.
      15
      CPU Time (μs)
      The time spent executing SQL statement on the CPU, in microseconds. This field can help you understand the CPU usage during the query.
      16
      Lock Wait Time (μs)
      The time spent waiting to acquire the database lock, in microseconds. This field can help you understand the lock contention situation of the query.
      17
      IO Wait Time (μs)
      The waiting spent waiting for an I/O operation to complete, in microseconds. This field can help you understand the I/O performance of the query.
      18
      Transaction Duration (μs)
      The total time consumed for a transaction from start to submission or rollback, in microseconds. This field can help you understand the performance of the transaction.
      19
      Audit Rule
      It displays the rule template that the audit log meets. Upon clicking the corresponding rule template, the details of the rule template will be displayed, including the basic information, the parameter settings, and the modification record.
      The value of the audit rule for the audit logs in the historical inventory is displayed as "-".
      The value of the audit rule for the audit logs that don't meet rules is displayed as "-".

      Relationship Between SQL Statement Type and SQL Statement Mapping Object

      No.
      SQL Statement Type
      SQL Statement Mapping Object
      0
      OTHER
      All other SQL statement types except the following
      1
      SELECT
      SQLCOM_SELECT
      2
      INSERT
      SQLCOM_INSERT, SQLCOM_INSERT_SELECT
      3
      UPDATE
      SQLCOM_UPDATE, SQLCOM_UPDATE_MULTI
      4
      DELETE
      SQLCOM_DELETE, SQLCOM_DELETE_MULTI, SQLCOM_TRUNCATE
      5
      CREATE
      SQLCOM_CREATE_TABLE, SQLCOM_CREATE_INDEX, SQLCOM_CREATE_DB, SQLCOM_CREATE_FUNCTION, SQLCOM_CREATE_USER, SQLCOM_CREATE_PROCEDURE, SQLCOM_CREATE_SPFUNCTION, SQLCOM_CREATE_VIEW, SQLCOM_CREATE_TRIGGER, SQLCOM_CREATE_SERVER, SQLCOM_CREATE_EVENT, SQLCOM_CREATE_ROLE, SQLCOM_CREATE_RESOURCE_GROUP, SQLCOM_CREATE_SRS
      6
      DROP
      SQLCOM_DROP_TABLE, SQLCOM_DROP_INDEX, SQLCOM_DROP_DB, SQLCOM_DROP_FUNCTION, SQLCOM_DROP_USER, SQLCOM_DROP_PROCEDURE, SQLCOM_DROP_VIEW, SQLCOM_DROP_TRIGGER, SQLCOM_DROP_SERVER, SQLCOM_DROP_EVENT, SQLCOM_DROP_ROLE, SQLCOM_DROP_RESOURCE_GROUP, SQLCOM_DROP_SRS
      7
      ALTER
      SQLCOM_ALTER_TABLE, SQLCOM_ALTER_DB, SQLCOM_ALTER_PROCEDURE, SQLCOM_ALTER_FUNCTION, SQLCOM_ALTER_TABLESPACE, SQLCOM_ALTER_SERVER, SQLCOM_ALTER_EVENT, SQLCOM_ALTER_USER, SQLCOM_ALTER_INSTANCE, SQLCOM_ALTER_USER_DEFAULT_ROLE, SQLCOM_ALTER_RESOURCE_GROUP
      8
      REPLACE
      SQLCOM_REPLACE, SQLCOM_REPLACE_SELECT
      9
      SET
      SQLCOM_SET_OPTION, SQLCOM_RESET, SQLCOM_SET_PASSWORD, SQLCOM_SET_ROLE, SQLCOM_SET_RESOURCE_GROUP
      10
      EXECUTE
      SQLCOM_EXECUTE
      11
      LOGIN
      Database login behavior, which is not constrained by audit rules and is recorded by default.
      12
      LOGOUT
      Database logout behavior, which is not constrained by audit rules and is recorded by default.
      13
      CHANGEUSER
      User change behavior, which is not constrained by audit rules and is recorded by default.
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