Dynamic provisioning is enabled by default. This storage mode automatically creates the
necessary persistent volumes (PV).
About this task
When you deploy Business Automation Insights,
by default the persistence.use_dynamic_provisioning parameter is set to
true. If you keep this default setting, you need a storage class that by default
creates persistent volumes with the Retain reclaim policy. You can use the storage
class that is configured as the default storage class of your Kubernetes environment, or a different
storage class. Configuration parameters for IBM Cloud Pak® for Business Automation custom resources start with the
spec.bai_configuration. prefix.
Procedure
- Make sure that you use a storage class that by default creates persistent volumes with
the Retain reclaim policy.
Important: If you do not ensure that the persistent volumes use the Retain reclaim
policy, you might lose your data when you upgrade or update your Business Automation Insights deployment because a different
persistent volume might be allocated.
- For more information about policy types, see the Persistent Volumes page of the Kubernetes documentation.
- To learn how to change the policy type of existing persistent volumes, see the Reclaim Policy page of the Kubernetes documentation.
-
To configure the default storage class for all the volumes that are provisioned for the ICP4BA
cluster, use the shared_configuration.sc_dynamic_storage_classname parameter.
If you prefer to customize specifically the persistent volume for Business Automation Insights, use the
bai_configuration.flink_pv.storage_class_name parameter.
Example
This example shows a storage configuration in the custom resource file when persistence is
enabled. This configuration creates the PersistentVolumeClaim
resource that is
listed with the default configuration. For dynamic provisioning, change all occurrences of the
<RWX_STORAGE_CLASS>
placeholder to the name of the storage
class that is appropriate for your deployment platform.spec:
bai_configuration:
persistence:
use_dynamic_provisioning: true
flink_pv:
storage_class_name: "<RWX_STORAGE_CLASS>"