10.22.57.8 master-10-22-57-8
10.22.57.5 worker-1-10-22-57-5
10.22.57.6 worker-2-10-22-57-6
10.22.57.7 worker-3-10-22-57-7
10.22.57.3 worker-4-10-22-57-3
10.22.57.4 worker-5-10-22-57-4

hostnamectl set-hostname