Why are some RHS nodes listed by hostname and other nodes by IP-address in the output of 'gluster peer status' and how to change from IP-address to hostname in Red Hat Gluster Storage ?

Issue

• How to change from IP-address to Hostname/FQDN ?
• How to change from IP-address to Hostname/FQDN in "gluster peer status" ?

• When running "gluster peer status" command on several storage nodes of the same trusted storage pool, some nodes show their hostnames and some show their IP-address, despite having the same network settings in /etc/hosts, /etc/resolv.conf, and /etc/nsswitch.conf

• Note, the IP-address 192.168.122.12 which should be rhs1-2:

[root@rhs1-1 ~]# gluster peer status
Number of Peers: 2

Hostname: 192.168.122.12
Uuid: a4e7a8c4-0985-4f11-ad1f-ee730bcd7320
State: Peer in Cluster (Connected)

Hostname: rhs1-3
Uuid: bc3609b3-f30e-4231-9b5f-9af878c5ca84
State: Peer in Cluster (Connected)

• Combination of IP-address and hostname can cause connectivity problem and may lead to issues.