[gpadmin@bogon gpdb]$ cd /opt/gpdb/gpAux/gpdemo/
[gpadmin@bogon gpdb]$ rm -rf datadirs/*

[gpadmin@bogon gpdb]$ gpinitsystem -D -a -c clusterConfigFile ""
……
20200601:11:11:35:033652 gpstart:bogon:gpadmin-[DEBUG]:-Running Command: /bin/ping6 -c 1 bogon
20200601:11:11:35:033652 gpstart:bogon:gpadmin-[DEBUG]:-[worker0] finished cmd: ping cmdStr='/bin/ping6 -c 1 bogon'  had result: cmd had rc=2 completed=True halted=False