SSH works, but "create push-pem" fails with host not reachable error

Issue

• When geo-sync is set up it tries to ping the slave before it tries to connect. iptables was blocking traffic so it would not complete, but after shutting iptables down it completed successfully.

rhs1:/var/log/glusterfs # gluster volume geo-replication geo 172.17.10.2::geo-slave create push-pem force
172.17.10.2 not reachable.
geo-replication command failed
rhs1:/var/log/glusterfs # ping rhs2
PING rhs2 (172.17.10.2) 56(84) bytes of data.
From rhs2 (172.17.10.2) icmp_seq=1 Destination Host Prohibited
From rhs2 (172.17.10.2) icmp_seq=2 Destination Host Prohibited
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