sudo -u postgres initdb -D /data/postgres/main

listen_addresses = '*'
wal_level = hot_standby
max_wal_senders = 2
logging_collector = on
max_wal_senders = 5

host replication replica 10.0.0.2/32 md5

service postgresql start

CREATE USER replica WITH REPLICATION ENCRYPTED PASSWORD '123456';

SELECT pg_create_physical_replication_slot('standby_slot');

pg_basebackup -h 10.0.0.1 -U replica -D /db/postgres/main -X s -P

hot_standby = on

standby_mode = 'on'
primary_conninfo = 'host=10.0.0.1 port=5432 user=replica password=123456'
primary_slot_name = 'standby_slot'
trigger_file = 'trigger'

service postgresql start

service postgresql stop

SELECT pg_backup_start('backup', true);

SELECT pg_backup_stop();

NOTICE: WAL archiving is not enabled; you must ensure that all required WAL segments are copied through other means to complete the backup

FATAL: could not locate required checkpoint record