Amazon CloudWatch Agent: all versions and old releases

Enhancements:
* [OpenTelemetry] Upgrade OpenTelemetry dependencies to v0.150.0
* [Agent] Move the agent from AWS SDK for Go v1 to v2

Bug Fixes:
* [ContainerInsights] Match the Helm chart for AKS and GKE OTel Container Insights: set the apiserver TLS server_name and remove azure.vm.* attributes from cluster-scoped metrics

Bug Fixes:
* [Agent] Fix OIDC token file permissions that prevented the agent from restarting

New Features:
* [OpenTelemetry] Add file tailing and Windows Events support
* [OpenTelemetry] Add resource_attributes support
* [Agent] Add set-env ctl action to persist agent environment variables
* [Agent] Add platform-aware default configs for OpenTelemetry (host, Kubernetes, ECS)
* [Agent] Add Microsoft Azure support for VMs and AKS

Enhancements:
* [OpenTelemetry] Add root-level cluster_name and standardize collection_interval
* [Agent] Retain custom environment variables in env-config.json between translation

Bug Fixes:
* [DatabaseInsights] Add severity parsing and fix multiline/timestamp for PostgreSQL server logs
* [Logs] Fix throttling deadlock in cloudwatchlogs output plugin when destinations are removed
* [Logs] Fix force-flush timer permanently stalling on low-volume log streams

Enhancements:
* [ApplicationSignals] Add support for Service Events logs and metrics pipelines
* [ContainerInsights] Extended OTLP enrichment with additional metric attributes and logs support

New Features
* [Metrics] Add support for collecting Elastic Fabric Adapter (EFA) metrics on EC2 instances

Bug Fixes
* [Agent] Fix nil pointer dereference in kubernetesResolver.Stop() causing crash on shutdown
* [Agent] Add IRSA and Pod Identity env var checks before JWT fallback in EKS detector
* [ContainerInsights] Fix LIS scraper service selector to match renamed ec2-instance-store CSI plugin

Enhancements:
* Downgrade PMD error logs for systemmetrics pipeline
* Bump xpath from 1.3.4 to 1.3.6

Enhancements:
* Bump Go version

Features:
* [ContainerInsights] Add Instance Store NVME metrics translation for EKS environments
* [ContainerInsights] Add EFA Metrics to Container Insights for EKS environments

Features:
* [ContainerInsights] Enable opt-in for high frequency GPU metrics collection with configurable intervals for ML inference workloads

Enhancements:
* [Logs] Fallback to iterative DescribeLogGroups if batch API not supported in region
* [ContainerInsights] Add enhanced CI checks and nil checks for neuron decorators to prevent panics

Bug Fixes:
* [OTLP] Fix OTLP pipeline configuration when used with EKS/ContainerInsights to prevent blocking custom metrics
* [Agent] Fix postinst failure for Debian package when init system is not available in Docker or chroot environments

Enchancements:
*[Agent] Add support for EC2 metadata as dimensions for host metrics
*[Agent] Add support for AutoScalingGroup as a dimension for host metrics
*[Agent] Add support for usage_metadata field in agent section of config

Bug Fixes:
*[BugFix] Fixed merging logic to append multiple jvm/otlp configurations
*[BugFix] Fixes goroutine leak with dynamically determined log destinations
*[BugFix] Fixed agent startup issue on windows due to config-downloader binaries

Features:
* [Metrics] Adding NVME Instance Store metrics
* [ContainerInsights] Added Ingress, PersistentVolume and PersistentVolumeClaim metrics

Enhancements:
* [Agent] RPM size reduction by optimizing helper binaries

Bug Fixes:
* [Logs] Fixed detection of truncated log files to prevent missing or duplicate log entries
* [Prometheus] Fixed Prometheus metrics being sent to undefined log streams in EKS when configured alongside Kubernetes/ECS
* [Processors] Fixed transform processor missing 'error mode' that cause silent failures during metric transformations
* [OTLP] Fixed receiver port conflict issues
* [ContainerInsights] Fixed duplicate metrics collection from Kueue controller by limiting to single collector pod

Features:
* [ContainerInsights] Ingest EBS NVME metrics exposed by aws-ebs-csi-driver

Enhancements:
* [Application Signals] Enable customizable attribute copying from resources to metrics for better metric organization
* [Explore Related] Add automatic EC2 metadata enrichment for OpenTelemetry data collection

Bug Fixes:
* [ContainerInsights] Fix endpoint slice to capture service name instead of slice name
* [Exporter/awsemfexporter] Fix output of count/sum metrics for detailed summary metrics
* [Metrics/nvidia_gpu] Update V12 XML schema for missing power_draw

Enhancements:
* Go1.24 dependency bump

Features:
* [EFA] Added Elastic Network Interface (ENI) ID as a dimension to EFA (Elastic Fabric Adapter) metrics

Enhancements:
* [ContainerInsights] Switched to using EndpointSlices instead of Endpoints for improved performance in large EKS clusters
* [Logs] Added option to trim timestamp from log messages if enabled by customer
* [EC2Tagger] Set separate refresh intervals for tags (default 0) and volumes (default 5 minutes if VolumeId configured)

Bug Fixes:
* [CloudWatch Exporter] Fixed issue with nil metric values by dropping metrics with nil values
* [Logs] Implemented fixed-size buffer to handle file descriptors in log tailer, controlled by a feature flag
* [Logs] Added 'backpressure_drop' feature flag for granular control of log handling during file rotation
* [Kubernetes] Implemented dynamic CA certificate handling for kubelet connections
* [Kubernetes] Use Kubernetes Secret File for Bearer Token in Prometheus API Access

Bug Fixes:
* [Related Telemetry] Fix EKS cluster detection when aws-auth config map does not exist
* [Logs] Reduce PutRetentionPolicy calls by checking existing policy
* [Logs] Fix data races in cloudwatchlogs

Enhancements:
* [Application Signals] Use an endpoint slice watcher instead of a pod watcher
* [Related Telemetry] Scrape auto scaling group attributes from resource metrics
* [Security] Add Confused Deputy Prevention
* [OpenTelemetry] Bump otel dependencies to v0.115.0/v1.21.0

Bug Fixes:
* Fix concurrent map read/write error causing agent crashes in entity store
* Fix disk usage metrics collection on macOS
* Fix service startup failures on Windows by updating network depenencies

Enhancements:
* [Logs] Improve performance with multi-threaded log pusher implementation
* [Related Telemetry] Add case insensitive metadata support for EC2 tags
* [Related Telemetry] Reduce number of entities in explore experience by retrieving instance tags simultaneously
* [Related Telemetry] Add fallback to use application signals for entity population when IMDS tags are not enabled
* [ApplicationSignals] Add support for .NET runtime metrics exporting