--停止原主库
[atlasdb@vm1 ~]$  pg_ctl -D /data/atlasdb -l logfile stop
waiting for server to shut down.... done
server stopped

--配置流复制文件和参数
[atlasdb@vm1 ~]$ vi $PGDATA/recovery.conf
[atlasdb@vm1 ~]$ cat $PGDATA/recovery.conf 
standby_mode = 'on'
primary_conninfo = 'user=atlasdb password=atlasdb host=192.168.0.202 port=5432 sslmode=prefer sslcompression=0 target_session_attrs=any'
[atlasdb@vm1 ~]$ 

-- 启动数据库
[atlasdb@vm1 ~]$  pg_ctl -D /data/atlasdb -l logfile start
waiting for server to start.... done
server started
[atlasdb@vm1 ~]$ psql
psql (11.5)
PSQL: Release 2.7.0
Connected to:
AtlasDB V2.7 Enterprise Edition Release - 64-bit Production
Type "help" for help.

atlasdb=# select pg_is_in_recovery();                                                
 pg_is_in_recovery 
-------------------
 t
(1 row)

atlasdb=# select * from test_tab ; 
 id |   name    |      e_mail      | d_id 
----+-----------+------------------+------
  1 | hemny     | hemny@qq.com     |   10
  2 | hemny_pg1 | hemny_pg1@qq.com |   10
(2 rows)