coordinator  =	  127.0.0.1:20000
subordinates =  { 
		  127.0.0.1:20001,
		  127.0.0.1:20002,
		  127.0.0.1:20003,
		  127.0.0.1:20004 
		}
group 1 {
  members = {1, 3}
}
group 2 {
  members = {2, 4}
}