aiservice-odh role failed determine the default storage class.

[ekambaraml]

Feature and motivation

When the AI Service is installed in a cluster running managed-nfs-storage as the default storage class, the AI Service fails in the role "aiservice_odh" because it cannot determine the default storage class.

$ oc get sc

# oc get sc
NAME                            PROVISIONER       RECLAIMPOLICY   VOLUMEBINDINGMODE   ALLOWVOLUMEEXPANSION   AGE
managed-nfs-storage (default)   nfs/provisioner   Delete          Immediate           false                  36h

The above output clearly indicates that OpenShift's default storage class was returned.

Error:

TASK [ibm.mas_devops.aiservice_odh : default-storage-classes : Lookup default storage classes] ***
ok: [localhost] => changed=false 
  message: Failed to find any default supported storage classes
  provider: null
  providerName: null
  rwo: null
  rwx: null
  success: false

TASK [ibm.mas_devops.aiservice_odh : default-storage-classes : Debug default storage classes] ***
ok: [localhost] => 
  msg:
  - 'Provider ............................... '
  - 'Default RWX ............................ '
  - 'Default RWO ............................ '

TASK [ibm.mas_devops.aiservice_odh : determine-storage-classes : Default Primary Storage if not set by user] ***
ok: [localhost] => changed=false 
  ansible_facts:
    primary_storage_class: ''

TASK [ibm.mas_devops.aiservice_odh : determine-storage-classes : Assert that primary storage class has been defined] ***
fatal: [localhost]: FAILED! => changed=false 
  assertion: primary_storage_class is defined and primary_storage_class != ""
  evaluated_to: false
  msg: primary_storage_class must be defined

NO MORE HOSTS LEFT *************************************************************

PLAY RECAP *********************************************************************
localhost                  : ok=9    changed=0    unreachable=0    failed=1    skipped=0    rescued=0    ignored=0   

The same issue is also faced with the Ansible playbook.

Usage example

This is to enable the DevOps playbook to work with any default storage classes.