Greenplum 5.7 + Connection Master segment

Os:centos 7.4
gp:gpdb-5.7.0

Three machines
Node1 is master host
Node2, Node3 for segment host psql login Master

Operation on Node1

# su-gpadmin
$ psql-d peiybdb
psql (8.3.23)
Type ' help ' for help.

peiybdb=# \l
                  List of Databases
   Name    |  Owner  | Encoding |  Access privileges  
-----------+---------+----------+---------------------
 peiybdb   | gpadmin | UTF8     | 
 Postgres  | gpadmin | UTF8     | 
 Template0 | Gpadmin | UTF8     | =c/gpadmin          
                                : gpadmin=ctc/gpadmin
 template1 | gpadmin | UTF8     | =c/gpadmin          
                                : gpadmin=ctc/gpadmin
(4 rows)
peiybdb=# \c
You are now connected to Database "PEIYBDB" as User "Gpadmin".
peiybdb=# Select Now ();
             Now              
------------------------------
 2018-05-02 06:55:25.99893+00
(1 row)

Node1 operation, modify pg_hba.conf

$ cd/u01/greenplum-data/gpseg-1/
$ VI pg_hba.conf
host     all         gpadmin         192.168.56.1/32     MD5
host     all         gpadmin         192.168.165.1/32    MD5
$ psql-d peiybdb psql
(8.3.23)
Type " Help.

peiybdb=# 
peiybdb=# Select pg_reload_conf ();
 pg_reload_conf 
----------------
 t
(1 row)

Psql Login Segment

Node2 or Node3 operation.

# su-gpadmin
$ pgoptions= '-c gp_session_role=utility ' psql-p 40000-d peiybdb
(psql)
Type "Help" For help.

peiybdb=# 
peiybdb=# Select Now ();
              Now              
-------------------------------
 2018-05-02 13:01:55.307143+00
(1 row)

peiybdb=# Select Current_database ();
 Current_database 
------------------
 peiybdb
(1 row)