127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.1.1	   node-1.localdomain
192.168.97.221      node-1.localdomain node-1
192.168.97.222      node-2.localdomain node-2