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This repository was archived by the owner on Aug 7, 2025. It is now read-only.
LocalStack MSAF supports [CloudWatch Logs integration](https://docs.aws.amazon.com/managed-flink/latest/java/cloudwatch-logs.html) to help monitor the Flink cluster for application events or configuration problems.
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The logging option can be added at the time of creating the Flink application using the [CreateApplication](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_CreateApplication.html) operation.
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Logging options can also be managed at a later point using the [AddApplicationCloudWatchLoggingOption](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_AddApplicationCloudWatchLoggingOption.html) and [DeleteApplicationCloudWatchLoggingOption](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_DeleteApplicationCloudWatchLoggingOption.html) operations.
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There are following prerequisites for CloudWatch Logs integration:
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- You must create the application's log group and log stream.
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Flink will not create it for you.
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- You must add the permissions your application needs to write to the log stream to the service execution role.
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Generally the following IAM actions are sufficient: `logs:DescribeLogGroups`, `logs:DescribeLogStreams` and `logs:PutLogEvents`
Configured logging options can be retrieved using [DescribeApplication](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_DescribeApplication.html):
Logs events are reported to CloudWatch every 10 seconds.
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## Resource Tagging
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You can manage [resource tags](https://docs.aws.amazon.com/managed-flink/latest/java/how-tagging.html) using [TagResource](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_TagResource.html), [UntagResource](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_UntagResource.html) and [ListTagsForResource](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_ListTagsForResource.html).
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Tags can also be specified when creating the Flink application using the [CreateApplication](https://docs.aws.amazon.com/managed-flink/latest/apiv2/API_CreateApplication.html) operation.
- Values of 20,000 ms for `execution.checkpointing.interval` and 5,000 ms for `execution.checkpointing.min-pause` are used for checkpointing.
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They can not be overridden.
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-[Tagging](https://docs.aws.amazon.com/managed-flink/latest/java/how-tagging.html) is not supported
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- In-place [version upgrades](https://docs.aws.amazon.com/managed-flink/latest/java/how-in-place-version-upgrades.html) and [roll-backs](https://docs.aws.amazon.com/managed-flink/latest/java/how-system-rollbacks.html) are not supported
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-[Snapshot/savepoint management](https://docs.aws.amazon.com/managed-flink/latest/java/how-snapshots.html) is not implemented
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- CloudTrail integration and CloudWatch metrics is not implemented.
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The application logging level defaults to `INFO` and can not be overridden.
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- CloudWatch and CloudTrail integration is not implemented
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