【AWS CLI Samples】CloudWatch Logs

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Create a log group

aws logs create-log-group \
--log-group-name ExampleLogGroup

output

None

by anonymous

Create a log stream

aws logs create-log-stream \
--log-group-name ExampleLogGroup \
--log-stream-name ExampleLogStream

output

None

by anonymous

Output log events

TIME="`date +%s`000"
TEXT="This is example message."
EVENT="timestamp=${TIME},message=\"${TEXT}\""
aws logs put-log-events \
--log-group-name ExampleLogGroup \
--log-stream-name ExampleLogStream \
--log-events "${EVENT}"

output

{
    "nextSequenceToken": "49647012347438648207383750719339122106922125597460136466"
}

by anonymous

Check log events

aws logs get-log-events \
--log-group-name ExampleLogGroup \
--log-stream-name ExampleLogStream

output

{
    "events": [
        {
            "timestamp": 1717663812000,
            "message": "This is example message.",
            "ingestionTime": 1717663813481
        }
    ],
    "nextForwardToken": "f/49647012347438648207383750719339122106922125597460136466/s",
    "nextBackwardToken": "b/49647012347438648207383750719339122106922125597460136466/s"
}

by anonymous

Set retention period in bulk for log groups with matching prefixes

logs=$(aws logs describe-log-groups \
--log-group-name-prefix /aws/lambda \
--query 'logGroups[*].[logGroupName]' \
--output text)
for i in $logs; do aws logs put-retention-policy --log-group-nam $i --retention-in-days 7 ;done

output

None

by anonymous