Deprecation Notes

Considering continuous reorganization and enhancement of Mirantis OpenStack for Kubernetes (MOSK), certain components are deprecated and eventually removed from the product. This section provides the following details about the deprecated and removed functionality that may potentially impact existing MOSK deployments:

• The MOSK release version in which deprecation is announced

• The final MOSK release version in which a deprecated component is present

• The MOSK release version in which a deprecated component is removed

Tungsten Fabric analytics services

Deprecated	MOSK 24.1
Unsupported	MOSK 24.2
Details	Tungsten Fabric analytics services, primarily designed for collecting various metrics from the Tungsten Fabric services, is being deprecated. Despite its initial implementation, user demand for this feature has been minimal. As a result, Tungsten Fabric analytics services will become unsupported in the product. All greenfield deployments starting from MOSK 24.1 do not include Tungsten Fabric analytics services. The existing deployments updated to 24.1 and newer versions will include Tungsten Fabric analytics services as well as the ability to disable them as described in Disable Tungsten Fabric analytics services.

StackLight telegraf-openstack plugin

Deprecated	MOSK 23.3
Final release	MOSK 23.3.4
Removed	MOSK 24.1
Details	The StackLight telegraf-openstack plugin is going to be replaced by osdpl-exporter. As a result, all valuable Telegraf metrics that are used by StackLight components will be reimplemented in osdpl-exporter and all dependent StackLight alerts and dashboards will start using new metrics. Therefore, if you use any telegraf-openstack metrics in any cluster customizations, consider reimplementing them with new metrics. To obtain the list of metrics that are removed and replaced with new ones, contact Mirantis support.

Default L2Template for a namespace

Deprecated	MOSK 23.2
Unsupported	MOSK 23.3
Details	Disabled creation of the default L2 template for a namespace. On existing clusters, clusterRef: default is removed during the migration process. Subsequently, this parameter is not substituted with the cluster.sigs.k8s.io/cluster-name label, ensuring the application of the L2 template across the entire Kubernetes namespace. Therefore, you can continue using existing default L2 templates for namespaces.

The clusterRef parameter in L2Template

Deprecated	MOSK 23.3
Unsupported	To be decided
Details	Deprecated the clusterRef parameter located in the L2Template spec. Use the cluster.sigs.k8s.io/cluster-name label instead. On existing clusters, this parameter is automatically migrated to the cluster.sigs.k8s.io/cluster-name label since MOSK 23.3.

OpenStackDeploymentSecret custom resource

Deprecated	MOSK 23.1
Final release	MOSK 23.2
Removed	MOSK 23.2
Details	The OpenStackDeploymentSecret custom resource has been deprecated. MOSK 23.1 introduces the capability to hide sensitive information from the OpenStackDeployment object by using the value_from directive. For details, see Security.

The allow-unsafe-backup parameter for MariaDB

Deprecated	MOSK 22.3
Final release	MOSK 22.3
Removed	MOSK 22.4
Details	Removed the unsafe --allow-unsafe-backup flag for MariaDB backup for security and backup procedure simplification purposes.

OpenStackDeployment CR fields containing cloud secret parameters

Deprecated	MOSK 22.3
Final release	MOSK 22.4
Removed	MOSK 22.5
Details	A number of fields intended to store confidential settings in the OpenStackDeployment custom resource has been deprecated in favor of OpenStackDeploymentSecret custom resource. The latter is a dedicated data structure to aggregate such secrets as SSL/TLS certificates, external systems access credentials, and others. The list of deprecated parameters includes features:ssl, features:barbican:backends:vault:approle_role_id, and features:barbican:backends:vault:approle_secret_id. To migrate to the new schema, refer to Migrating secrets from OpenStackDeployment to OpenStackDeploymentSecret CR.

The OpenStack Panko service

Deprecated	MOSK 22.1
Final release	MOSK 22.1
Removed	MOSK 22.2
Details	The OpenStack Panko service is no longer maintained in the upstream OpenStack. See the project repository page for details.

The tf-status service

Deprecated	MOSK 21.5
Final release	MOSK 21.5
Removed	MOSK 21.6
Details	The tf-status service duplicated the health-check information about the Tungsten Fabric services that you can also obtain from the liveness and readiness probes on the Tungsten Fabric pods. Additionally, MOSK 21.5 introduces an overall health status in the Tungsten Fabric Operator CR status with health status for every module of Tungsten Fabric. To get the overall cluster status, verify the output of kubectl -n tf describe tfoperators <TFOPERATOR-CR-NAME>.

The status element in the OsDpl CR

Deprecated	MOSK 21.5
Final release	MOSK 21.6
Removed	MOSK 22.1
Details	The status element in the OpenStackDeployment (OsDpl) custom resource has been removed from the product in favor of the OpenStackDeploymentStatus (OsDplSt) custom resource, a single data structure that provides a machine-readable status of an OpenStack deployment at a certain point in time.

CPU isolation using isolcpus

Deprecated	MOSK 22.2
Final release	To be decided
Removed	To be decided
Details	Configuring CPU isolation through the isolcpus configuration parameter for Linux kernel is considered deprecated. MOSK 21.5 introduces the capability to configure CPU isolation using the cpusets mechanism in Linux kernel. For details, see CPU isolation using cpusets.

The OpenStack Panko service

Deprecated	MOSK 22.1
Final release	MOSK 22.1
Removed	MOSK 22.2
Details	The OpenStack Panko service is no longer maintained in the upstream OpenStack. See the project repository page for details.