[atlasdb@vm2 ~]$ pg_ctl promote
waiting for server to promote.... done
server promoted
[atlasdb@vm2 ~]$ 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 
-------------------
 f
(1 row)

atlasdb=#