Release Notes for 1.12.0 Beta 1

Release notes for DC/OS 1.12.0 Beta 1

DC/OS 1.12.0 Beta 1 was released on September 20, 2018.

DC/OS 1.12.0 Beta 1 release is for testing only and not to be used in production. This release will only support new installations.

NOTE: Provide feedback on the new features and services at

IMPORTANT: Mesos endpoints with the .json suffix are deprecated in DC/OS 1.12 and will be removed in DC/OS 1.13.

About DC/OS 1.12.0 Beta 1

DC/OS 1.12.0 Beta 1 includes the following new features and capabilities:

New Features and Capabilities

Anonymous LDAP Bind Support Enterprise

  • Complies with standardized Enterprise LDAP integration pattern without a dedicated DC/OS integration LDAP user.

Dynamic LDAP Synchronization Enterprise

Improved Multi-Cluster UI

  • DC/OS CLI now supports multiple clusters with different versions.
  • DC/OS CLI now automatically downloads and install the enterprise-cli plugins. Enterprise

Mesosphere Kubernetes Engine


Maturation of metrics observability are:

  • Adopt industry standards, Free and Open Source Software (FOSS) metrics infrastructure.
  • Simplify a complicated codebase.
  • Enable additional output formats.
  • No longer require modifications when collecting metrics via Prometheus endpoint in 1.11.
  • Exporting metrics directly to Datadog is currently not supported in DC/OS 1.12.0 Beta 1.

Private Package Registry Enterprise

  • Enable on-premise package distribution and management.
  • Enable air-gapped Virtual Private Cloud package management.
  • Simplify package artifact management.
  • Full support for NFS and S3 as storage backends for package storage.
  • Package specific controls for adding/removing/updating packages within a cluster.
  • Package management CLI.

UX Enhancements

  • Add master table and health information in the nodes page.
  • Include base tech version in the services page.
  • Include node type (Public/Private) in the nodes page.
  • Remove the CPU/MEM/Disk graphic from the nodes page.
  • Add the Mesosphere DC/OS logo above the UI.
  • Fix 100+ bugs and performance improvements.

Known Issues and Limitations

  • DCOS-9929 - Implement a validation approach to access secrets. Enterprise
  • DCOS-38011 - Fix bouncer recovery from unresponsive Cockroachdb. Enterprise
  • DCOS-40551 - Prevent Mesos modules from loading an empty value.
  • DCOS-40740 - Modify access_log permissions from IAM. Enterprise
  • DCOS-40748 - Modify default configurations in Mesos authorizer HTTP client with reasonable duration for timeouts. Enterprise
  • DCOS-40878 - Fix operations (add and remove) on event stream subscribers.
  • DCOS-41559/DCOS_OSS-4060 - Fix null value issue in dcos_metrics output.
  • DCOS_OSS-4088/DCOS_OSS-4090 - Bump Telegraf package to fix 500 responses from v0 metrics API due to JSON serialization error.