[one-users] Cannot delete cluster. Cluster 100 is not empty, it contains 1 datastores.

[Qiubo Su (David Su)]

Dear OpenNebula Community,

I want to delete the cluster, but got below error:

oneadmin at pcone:~/var$ onecluster list
   ID NAME                      HOSTS VNETS DATASTORES
  100 1cluster                      0     0          1
oneadmin at pcone:~/var$ onecluster delete 100
[ClusterDelete] Cannot delete cluster. Cluster 100 is not empty, it
contains 1 datastores.

Then I try to deleter the datastore, but got below error:

oneadmin at pcone:~/var$ onedatastore list
  ID NAME                      CLUSTER         IMAGES TYPE     TM
   0 system                    -                    0 -        shared
   1 default                   1cluster             0 fs       shared
oneadmin at pcone:~/var$ onedatastore delete 1
[DatastoreDelete] Cannot delete datastore. System Datastores (ID < 100)
cannot be deleted.

Why the cluster can't be deleted? It is much appreciated if anyone can help
with how to delete the cluster in this situation.

Best regards,
Q.S.
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