Revisions

Date	Changes
March 2023	Initial release.
April 2023	Released version 1.0.1 Fixed deployment failure due to Amazon S3 ACL changes.
June 2023	Released version 1.0.3 Fixed the EKS Fluent Bit deployment configuration generation issue.
August 2023	Released version 2.0.0 Added feature of ingesting log from S3 bucket continuously or on-demand Added log pipeline monitoring dashboard into the solution console Supported one-click enablement of pipeline alarms Added an option to automatically attach required IAM policies when creating an Instance Group Displayed an error message on the console when the installation of the log agent fails Updated Application log pipeline creation process by allowing customer to specify a log source Added validations to OpenSearch domain when importing a domain or selecting a domain to create a log pipeline Supported installing log agent on AL2023 instances Supported ingesting AWS WAF (associated with CloudFront) sampled logs to OpenSearch in other Regions except us-east-1 Allowed the same index name in different OpenSearch domains
November 2023	Released version 2.1.0 Added Light Engine to provide an Athena-based serverless and cost-effective log analytics engine to analyze infrequent access logs Added OpenSearch Ingestion to provide more log processing capabilities, with which OSI can provision compute resource OpenSearch Compute Units (OCU) and pay per ingestion capacity Supported parsing logs in nested JSON format Supported CloudTrail logs ingestion from the specified bucket manually Fixed the issue that the solution cannot list instances when creating instance groups Fixed the issue that EC2 instances launched by the Auto Scaling group failed to pass the health check
December 2023	Released version 2.1.1 Fixed the issue that Log ingestion error in light engine when not specified time key in the log config Fixed the issue that cannot deploy the Centralized Logging with OpenSearch solution in the UAE Region Fixed the issue that EC2 instances should not be added to the same Instance Group
March 2024	Released version 2.1.2 Resolved a bug where upgrading from versions earlier than 2.1.0 led to the loss of Amazon S3 notifications, preventing the proper collection of logs from the Amazon S3 buffer. Addressed a problem where including the @timestamp field in log configurations caused failures in creating index_templates, leading to an inability to write data to OpenSearch. Fixed a bug in the log processor Lambda due to the absence of the 'batch_size' variable, causing process failures. Solved a deployment issue with the Log Analytics Pipeline, which previously could not deploy cross-account Lambda pipelines. Corrected an issue with the Application Load Balancer Service Log Parser that resulted in the omission of numerous log lines. Amended an inaccurate warning message displayed during pipeline creation with an existing index in OpenSearch. Amended an inaccurate error messaging when deleting an Instance Group in application log pipelines.
June 2024	Released version 2.2.0 Added support to install, configure, and monitor the Fluent Bit agent on Windows Server 2016/2019/2022 instances.  Added a log visualization template for Windows IIS (W3C format) logs. Added a default tag "CLOSolutionCostAnalysis" to all resources created by the solution, allowing customers to view the total cost in Cost Explorer. Add support for tag propagation for resources when creating log pipelines, allowing customers to view all resources and associated costs at the pipeline level. Added support for ingesting and analyzing data in a specified Amazon S3 location using Light Engine. Added support for importing OpenSearch clusters with custom KMS encryption enabled. Added support for ingesting and analyzing AWS CloudTrail logs using Light Engine. Added support for ingesting and analyzing Syslog data using Light Engine. Added support for using the Unix timestamp as the time key in Log Config. Added support for Asia Pacific (Hyderabad), Asia Pacific (Jakarta), Asia Pacific (Melbourne), Israel (Tel Aviv), Canada (Calgary), Europe (Spain), Europe(Zurich), Middle East (UAE) Regions. Fixed an issue where creating a pipeline failed when Lambda reached concurrency limits. Fixed a bug where the system could not read properties of undefined ('accountId') when the Next button was clicked without selecting an Instance Group. Fixed an issue where logs were not received when using the solution-provisioned staging bucket in Light Engine. Fixed a permissions issue in the LogMerger State Machine within Light Engine: The S3ObjectMigration Lambda failed due to insufficient AWS KMS permissions on the analytics S3 bucket.