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Under Configuring The ceph-iscsi-ansible in https://access.redhat.com/documentation/en/red-hat-ceph-storage/2/paged/administration-guide/chapter-9-using-an-iscsi-gateway-technology-preview For adding the "gateway_iqn" we need the iscsi initiator name of Clients. For RHEL clients the IQN name is seen only when the iscsi-initiator-utils is installed. Can a NOTE be added there saying the iscsi initiator package is needed for getting the IQN name and the file where iqn name is saved is : # cat /etc/iscsi/initiatorname.iscsi InitiatorName=iqn.1994-05.com.redhat:8c3cb257a5e7