What's new in Dynatrace ActiveGate version 1.323

  • Release notes
  • 2-min read
  • Published Sep 26, 2025
  • Rollout start on Sep 23, 2025

This page showcases new features, changes, and bug fixes in Dynatrace ActiveGate version 1.323. It contains:

With this release, the following are the oldest supported ActiveGate versions.

Support levelOldest supported version
Standard Support1.305
Enterprise Success and Support1.299

For details, see How long are versions supported following rollout?.

Announcements

End of support for private Synthetic locations on Red Hat/Oracle Linux/Rocky Linux 8

There are no new versions of Chromium for Red Hat/Oracle Linux/Rocky Linux 8 beyond version 133. For important security and stability reasons, we've decided to discontinue our support for installing Synthetic-enabled ActiveGate on Red Hat/Oracle Linux/Rocky Linux 8 after ActiveGate version 1.325.

To ensure the continuity and security of your synthetic monitors, we recommend migrating your Synthetic-enabled ActiveGate to one of the supported operating systems, for example Red Hat/Oracle Linux/Rocky Linux 9.

ActiveGate version 1.325 is the last Synthetic-enabled ActiveGate supported on Red Hat/Oracle Linux/Rocky Linux 8.

Additionally, with Dynatrace version 1.326, we plan to introduce mechanisms preventing Synthetic-enabled ActiveGates on Red Hat/Oracle Linux/Rocky Linux 8 from being updated beyond version 1.325.

Feature updates

Digital Experience | Synthetic Monitoring

Updated Synthetic installer to use JRE 17.0.16+8

To take advantage of performance improvements, the latest security-vulnerability enhancements, and bug fixes, we've upgraded JRE to version 17.0.16+8.

Digital Experience | Synthetic Monitoring

Chromium support for private Synthetic locations

Chromium 133 is the latest supported version for Synthetic-enabled ActiveGate installed on:

  • Red Hat Enterprise Linux 8.10
  • Oracle Linux 8.10
  • Rocky Linux 8.10

Chromium 139 is the latest supported version for Synthetic-enabled ActiveGate installed on:

  • Ubuntu 20.04, 22.04
  • Red Hat Enterprise Linux 9.5
  • Rocky Linux 9.6

Chrome for Testing 139 is the latest supported version for Synthetic-enabled ActiveGate installed on:

  • Amazon Linux 2023
  • Ubuntu 24.04
  • Oracle Linux 9.5

Chromium 139 is bundled with the Windows ActiveGate installer.

For more information on supported and provided Chromium versions, see Requirements for private Synthetic locations and Create a private Synthetic location.

Infrastructure Observability | Kubernetes

Kubernetes thread pool improvements

Introduced the following improvements to ActiveGate Kubernetes thread pools:

  • Changed the names of the thread_pool_name dimension value of the self-monitoring metrics active_gate.thread_pool.busy_threads and active_gate.thread_pool.queue_size to more meaningful names.
  • Introduced a new thread pool for Kubernetes node endpoint metrics (Pipeline Executor OpenMetrics Builtin Thread Pool) to improve isolation from the Kubernetes standard API monitoring. It executes the Kubernetes OpenMetrics Builtin pipeline (K8s node endpoint metrics).
  • Adapted the Pipeline Executor Default and the Pipeline Executor OpenMetrics Raw thread pool sizes from 15 to 20.

Infrastructure Observability | Kubernetes

Improved ActiveGate resource consumption

Improved ActiveGate memory and CPU consumption.

Breaking changes

Application Observability | OpenTelemetry

Stricter validation of OpenTelemetry explicit bucket histograms

Histograms with mismatched bucket boundaries and bucket counts are now strictly validated to align with OpenTelemetry standards. Mismatched histograms are no longer partially ingested; the entire histogram is dropped.

Operating system support

    Future Dynatrace ActiveGate operating systems support changes

    The following operating systems will no longer be supported starting 01 May 2026
    The following operating systems will no longer be supported starting 01 June 2026
    The following operating systems will no longer be supported starting 01 July 2026

    Past Dynatrace ActiveGate operating systems support changes

    The following operating systems are no longer supported since 01 June 2025
    The following operating systems are no longer supported since 01 July 2025
    The following operating systems are no longer supported since 01 December 2025

    Fixes and maintenance

    Resolved issues in this release

    General Availability (Build 1.323.29)

    The 1.323 GA release contains 4 resolved issues (including 1 vulnerability resolution).

    ComponentResolved issues
    ActiveGate3
    extension framework1 (1 vulnerability)

    ActiveGate

    • Fixes a corner case for logs ingested via API where parsing JSON in log content returned a string instead of an array. (DAQ-14410)
    • Fixes the ingestion of Kubernetes events without the involved object information. (INFOBS-3969)
    • Histograms with mismatched bucket boundaries and bucket counts are now strictly validated to align with OpenTelemetry standards. Mismatched histograms are no longer partially ingested; the entire histogram is dropped. (OA-51902)

    extension framework

    • Vulnerability: The Apache Tomcat libraries have been updated in response to CVE-2025-48989.The Apache Tomcat libraries have been updated in response to CVE-2025-48989. (DAQ-12500)
    • Fixed incorrect values in the self-monitoring metrics dsfm:active_gate.traffic.server.sent and dsfm:active_gate.traffic.server.received. (MGD-6701)
    • Certain REST API requests that fail in ActiveGate are now retried in the backend. (MGD-6513)