Typo in on workers memory 

I think the worker machines are not "1024 GB" you probably want to change it to MB.

"worker1 1024 GB RAM 20 GB disk 10.240.0.31/24
worker2 1024 GB RAM 20 GB disk 10.240.0.32/24"

[root@worker1 ~]# free -m
                     total        used        free      shared  buff/cache   available
Mem:           1496         168         139           0        1188        1104