[RHV] VDSM <HOST> command Get Host Statistics failed: Internal JSON-RPC error

Issue

• RHV Manager is receiving alert below from gluster service only enabled nodes [1]:

 VDSM <HOST> command Get Host Statistics failed: Internal JSON-RPC error: {'reason': '<Fault 1: "<type \'exceptions.AttributeError\'>:\'NoneType\' object has no attribute \'statistics\'">'}

[1]

# /usr/share/ovirt-engine/dbscripts/engine-psql.sh -c "select vds_name,gluster_version from vds where cluster_virt_service='f' and cluster_gluster_service='t' order by vds_name;"