How to configure NFS Ganesha over RGW in Red Hat Ceph Storage?

Issue

• Configuring NFS-Ganesha for Rados Gateway in Red Hat Ceph Storage 2.x, fails to export the RGW buckets.

• The Rados Gateway logs show the following messages:

01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] nfs_set_param_from_conf :NFS STARTUP :EVENT :Configuration file successfully parsed
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] init_server_pkgs :NFS STARTUP :EVENT :Initializing ID Mapper.
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] init_server_pkgs :NFS STARTUP :EVENT :ID Mapper successfully initialized.
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] create_export :FSAL :CRIT :RGW module: librgw init failed (-5)
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] mdcache_fsal_create_export :FSAL :MAJ :Failed to call create_export on underlying FSAL RGW
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] fsal_cfg_commit :CONFIG :CRIT :Could not create export for (/) to (/)
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] main :NFS STARTUP :WARN :No export entries found in configuration file !!!
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] config_errs_to_log :CONFIG :CRIT :Config File (/etc/ganesha/ganesha.conf:49): 1 validation errors in block FSAL
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] config_errs_to_log :CONFIG :CRIT :Config File (/etc/ganesha/ganesha.conf:49): Errors processing block (FSAL)
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] config_errs_to_log :CONFIG :CRIT :Config File (/etc/ganesha/ganesha.conf:45): Unknown parameter (NFS_Protocols)
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] config_errs_to_log :CONFIG :CRIT :Config File (/etc/ganesha/ganesha.conf:46): Unknown parameter (Transport_Protocols)
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] config_errs_to_log :CONFIG :CRIT :Config File (/etc/ganesha/ganesha.conf:38): 2 errors while processing parameters for EXPORT
01/10/2017 22:42:25 : epoch 59d0fed1 : rgw_node1 : ganesha.nfsd-6112[main] config_errs_to_log :CONFIG :CRIT :Config File (/etc/ganesha/ganesha.conf:38): Errors processing block (EXPORT)

• The service was restarted with:

# systemctl status nfs-ganesha.service