github.com/aws/amazon-cloudwatch-agent

💡Enhancements💡

• Downgrade PMD error logs for systemmetrics pipeline by @sky333999 in #2073

Full Changelog: v1.300066.0...v1.300066.1

Released On

🚀New Features 🚀

• Add OTLP export support with receivers, endpoint validation, and agent health integration by @JayPolanco in #2062

💡Enhancements💡

• Add awsneuron metrics processor for Neuron Monitor by @petruanica in #2050
• Add otel components hyperpod efa kubelet by @mitali-salvi in #2066
• Remove ec2tagger from systemmetrics pipeline if IMDS is not accessible by @sky333999 in #2067

Full Changelog: v1.300065.0...v1.300066.0

Released On

🐞Bug Fixes🐞

• [Agent] Handle regex escaping for '+' in timestamp format by @jefchien in #2008

💡Enhancements💡

• [Agent] Add systemmetrics pipeline for recognized hosts by @sky333999 in #2052
• [Agent] Adds append_dimensions to collectd, supporting custom metric dimensions by @TravisStark in #1997

Full Changelog: v1.300064.1...v1.300065.0

Released On

💡Enhancements💡

• Built with newer version of Go
  • 1.25.6 (S3, SSM, ECR, DockerHub)
  • 1.24.13 (Amazon Linux YUM)

Full Changelog: v1.300064.0...v1.300064.1

Enhancements:

• Bump Expr to v1.17.7

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Features:

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

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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

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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

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Features:

• [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

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Features:

• [Windows Events] Add windows event id filtering to CWAgent
• [Windows Events] Add windows event regex filtering to CWAgent
• [Host Metrics] Add mem_shared metric to CloudWatch Agent
• [Host Metrics] Adding NVME Instance Store Metrics
• [Container Insights] Add UltraServer support for CloudWatch agent
• [Container Insights] Add new Tensor Core and GPU capacity metrics
• [Container Insights] Add Neuron Core and EFA capacity metrics

Enhancements:

• [Logs] Zero-allocation optimization for sendLine and readLine
• [Logs] Dynamic reader buffer for tail
• [Logs] Update state when batch dropped
• [Application Signals] Add aws.remote.resource.account.* attributes to Application Signals EMF logs

Bug Fixes:

• [Application Signals] Fix race conditions in applicationsignals processor
• [Logs] Revert Add default log publishing concurrency

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Enhancements:

• [ContainerInsights] Added ability to set CollectionRole via environment variable
• [ContainerInsights] Increased data cache TTL and cleanup interval to support metric collection intervals greater than 300s
• [Logs] Set default concurrency for multi-threaded log processing
• [Logs] Improved log state file handling for Windows event logs
• [Logs] Increased maximum log event size to 1MB and improved handling of large log lines

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Features:

• [Related Telemetry] Allow service and environment configuration for OTLP in EC2

Enhancements:

• [Prometheus] mTLS support for Target Allocator
• [OpenTelemetry] Update fallback for OTel config flag
• [Logs] Improved log state management
• [ApplicationSignals] Add support for deployment.environment.name
• [OpenTelemetry] Bump OTel dependencies to v0.124.1

Bug Fixes:

• [ApplicationSignals] Concurrency bug fix
• [ContainerInsights] Fix grouping for container insights metrics for mixed metric types
• [ContainerInsights] Add perCore neuron empty metric as datapoints instead of individual metric object
• [Logs] Fix concurrent map write crash

========================================================================

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

========================================================================

Bug Fixes:

• [ContainerInsights] Fix endpoint slice to capture service name instead of slice name

========================================================================

Enhancements:

• Go1.24 dependency bump

========================================================================

Features:

• [Logs] Add service entity support
• [Metrics/OTLP] Support entity for custom metrics
• [Related Telemetry] Implement Kubernetes Metadata Extension
• [Metrics] Support delta counter and histogram prometheus metrics for AMP destination
• [Metrics] Implement AWS EBS NVME Receiver
• [Container Insights] Add platform type in EKS

Enhancements:

• [Related Telemetry & Container Insights] Reduce noisy warning logs

Bug Fixes:

• [Application Signals] Fix service ip to workload mapping in pods

========================================================================

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
• [Logs] Only add to cache if log stream is created

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

========================================================================

Bug Fixes:

• Fix Excessive IMDS related error logging
• Fixed a concurrency issue in entity attribute handling that was causing agent crashes due to simultaneous map writes.

Enhancements:

• [AppSignal] Support RemoteEnvironment dimension for non-Kubernetes platforms.
• [Logs] Support exporting large exponential histograms as EMF logs
• [Logs] Reduce EMF exporter verbose logging
• [Traces] Generate URL section in X-Ray segment when net.peer.name attribute is available

========================================================================