greenplum 5.7 + connection master segment

os: centos 7.4
gp: gpdb-5.7.0

三台机器
node1 为 master host
node2、node3 为 segment host

psql 登录 master

node1 上操作

# 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 上操作,修改 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" for help.

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

psql 登录 segment

node2 或者 node3 上操作

# su - gpadmin
$ PGOPTIONS='-c gp_session_role=utility' psql -p 40000 -d peiybdb
psql (8.3.23)
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)