start_query

start_query(**kwargs)

Schedules a query of a log group using CloudWatch Logs Insights. You specify the log group and time range to query and the query string to use.

For more information, see CloudWatch Logs Insights Query Syntax.

Queries time out after 15 minutes of runtime. If your queries are timing out, reduce the time range being searched or partition your query into a number of queries.

If you are using CloudWatch cross-account observability, you can use this operation in a monitoring account to start a query in a linked source account. For more information, see CloudWatch cross-account observability. For a cross-account StartQuery operation, the query definition must be defined in the monitoring account.

You can have up to 20 concurrent CloudWatch Logs insights queries, including queries that have been added to dashboards.

See also: AWS API Documentation

Request Syntax

response = client.start_query(
    logGroupName='string',
    logGroupNames=[
        'string',
    ],
    logGroupIdentifiers=[
        'string',
    ],
    startTime=123,
    endTime=123,
    queryString='string',
    limit=123
)

Parameters

• logGroupName (string) --

  The log group on which to perform the query.

  Note

  A StartQuery operation must include exactly one of the following parameters: logGroupName , logGroupNames or logGroupIdentifiers .

• logGroupNames (list) --

  The list of log groups to be queried. You can include up to 50 log groups.

  Note

  A StartQuery operation must include exactly one of the following parameters: logGroupName , logGroupNames or logGroupIdentifiers .

  • (string) --
• logGroupIdentifiers (list) --

  The list of log groups to query. You can include up to 50 log groups.

  You can specify them by the log group name or ARN. If a log group that you're querying is in a source account and you're using a monitoring account, you must specify the ARN of the log group here. The query definition must also be defined in the monitoring account.

  If you specify an ARN, the ARN can't end with an asterisk (*).

  A StartQuery operation must include exactly one of the following parameters: logGroupName , logGroupNames or logGroupIdentifiers .

  • (string) --
• startTime (integer) --

  [REQUIRED]

  The beginning of the time range to query. The range is inclusive, so the specified start time is included in the query. Specified as epoch time, the number of seconds since January 1, 1970, 00:00:00 UTC .

• endTime (integer) --

  [REQUIRED]

  The end of the time range to query. The range is inclusive, so the specified end time is included in the query. Specified as epoch time, the number of seconds since January 1, 1970, 00:00:00 UTC .

• queryString (string) --

  [REQUIRED]

  The query string to use. For more information, see CloudWatch Logs Insights Query Syntax.

• limit (integer) -- The maximum number of log events to return in the query. If the query string uses the fields command, only the specified fields and their values are returned. The default is 1000.

Return type

dict

Returns

Response Syntax

{
    'queryId': 'string'
}

Response Structure

• (dict) --

  • queryId (string) --

    The unique ID of the query.

Exceptions

• CloudWatchLogs.Client.exceptions.MalformedQueryException
• CloudWatchLogs.Client.exceptions.InvalidParameterException
• CloudWatchLogs.Client.exceptions.LimitExceededException
• CloudWatchLogs.Client.exceptions.ResourceNotFoundException
• CloudWatchLogs.Client.exceptions.ServiceUnavailableException