New features¶

MOS 21.6 features¶
Component	Support scope	Feature
OpenStack	Full	Periodic automatic cleanup of OpenStack databases
	TechPreview	Image signature verification
	TechPreview	Vault connectivity configuration
Tungsten Fabric	Full	Validation of the TFOperator custom resource
	TechPreview	Multi-rack architecture with Tungsten Fabric
Tungsten Fabric	Full	Tungsten Fabric 2011 as the default version
StackLight	Full	Improvements to StackLight alerting

Periodic automatic cleanup of OpenStack databases¶

Implemented an automatic cleanup of deleted entries from the databases of OpenStack services. By default, the deleted rows older than 30 days are sanely and safely purged from the Barbican, Cinder, Glance, Heat, Masakari, and Nova databases for all relevant tables.

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Reference Architecture: features:database:cleanup

Image signature verification¶

TechPreview

Implemented the capability to perform image signature verification when booting an OpenStack instance, uploading a Glance image with signature metadata fields set, and creating a volume from an image.

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Vault connectivity configuration¶

TechPreview

Implemented the ability to set the kv_mountpoint and namespace in spec:features:barbican to specify the mountpoint of a Key-Value store and the Vault namespace to be used for all requests to Vault respectively.

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Reference Architecture: features:barbican:backends:vault

Validation of the TFOperator custom resource¶

Implemented the capability for the Tungsten Fabric Operator to use ValidatingAdmissionWebhook to validate environment variables set to Tungsten Fabric components upon the TFOperator object creation or update.

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Reference Architecture: TFOperator custom resource validation

Tungsten Fabric 2011 as the default version¶

Tungsten Fabric 2011 is now set as the default version for deployment.

Tungsten Fabric 5.1 is considered deprecated and will be declared unsupported in one of the upcoming releases. Therefore, Mirantis highly recommends upgrading from Tungsten Fabric 5.1 to 2011.

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Deployment guide: Deploy Tungsten Fabric
Operations guide: Upgrade Tungsten Fabric to 2011

Multi-rack architecture with Tungsten Fabric¶

TechPreview

Implemented the capability to deploy a MOS with Tungsten Fabric cluster with a multi-rack architecture to allow for native integration with the Layer 3-centric networking topologies.

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Reference Architecture: Multi-rack architecture

Improvements to StackLight alerting¶

Implemented the following improvements to StackLight alerting:

Implemented per-service *TargetDown and *TargetsOutage alerts that raise if one or all Prometheus targets are down.
Enhanced the alert inhibition rules to reduce alert flooding.

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Operations guide: StackLight alerts