After running gpstart and each segment reports the following:
20251016:11:28:33:115197 gpstart:<HOSTNAME>:gpadmin-[INFO]:-DBID:2 FAILED host:'sdw1' datadir:'/data1/primary/gpseg0' with reason:'PG_CTL failed.'
The segment logs show the following:
2025-10-16 11:03:54.089002 CEST,,,p110618,th-452115840,,,,0,,,seg0,,,,,"LOG","F0000","hostssl requires SSL to be turned on",,"Set ssl = on in postgresql.conf.",,,"line 126 of configuration file ""/data1/primary/gpseg0/pg_hba.conf""",,0,,"hba.c",874,
Correct the host pg_hba.conf file to trust connections from the coordinator and other segment hosts and remove all the hostssl entries.