Creating secondary Ceph iSCSI Gateway in gwcli fails with error Get gateway hostname failed : Unable to connect to api endpoint

Issue

• Deployed two Ceph iSCSI gateway nodes with service specification YAML file.

• Creating the primary iSCSI gateway in gwcli was successful.

  [root@iscsigateway1 /]# gwcli
  /iscsi-target...wiqn/gateways> create iscsigateway1.example.org 198.51.100.21
  Adding gateway, sync'ing 0 disk(s) and 0 client(s)
  ok
  

• Creating the second iSCSI gateway fails and only one gateway is visible in gwcli.

  [root@iscsigateway1 /]# gwcli
  /iscsi-target...wiqn/gateways> create iscsigateway2.example.org 198.51.100.22
  Get gateway hostname failed : Unable to connect to api endpoint @ http://iscsigateway2.example.org:5000/api/sysinfo/hostname
  Please check api_host setting and make sure host iscsigateway2.example.org IP is listening on port 5000
  /iscsi-target...wiqn/gateways> ls
  o- gateways .................................................................................................. [Up: 1/1, Portals: 1]
    o- iscsigateway1.example.org .............................................................................. [198.51.100.21 (UP)]