What is the default retention period for LogGroup in Cloud Watch?

Question

Here is documentation about creating Cloud Watch LogGroup via Cloud Formation. They said:

RetentionInDays

The number of days log events are kept in CloudWatch Logs. When a log event expires, CloudWatch Logs automatically deletes it. For valid values, see PutRetentionPolicy in the Amazon CloudWatch Logs API Reference.

Required: No

So if I create LogGroup without RetentionInDays parameter will Cloud Watch keep those logs forever? Or what RetentionInDays value they use by default?

Answer 1

By default, log data is stored in CloudWatch Logs indefinitely. However, you can configure how long to store log data in a log group. Any data older than the current retention setting is automatically deleted. You can change the log retention for each log group at any time.

Source :- https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/Working-with-log-groups-and-streams.html#SettingLogRetention