wal_level = hot_standby
max_wal_senders = 5
wal_keep_segments = 32
archive_mode = on
archive_command = 'cp %p /var/lib/pgsql/9.4/archive/%f'

standby_mode = 'on'
primary_conninfo = 'host=192.168.0.10 port=5432 user=replication password=password'
trigger_file = '/var/lib/pgsql/9.4/trigger'
restore_command = 'cp /var/lib/pgsql/9.4/archive/%f "%p"'

archive_cleanup_command = 'pg_archivecleanup /var/lib/pgsql/9.4/archive %r'

< 2019-01-16 09:02:48.937 EST >WARNING:  archive_cleanup_command "pg_archivecleanup /var/lib/pgsql/9.4/archive %r": child process exited with exit code 2
pg_archivecleanup: archive location "/var/lib/pgsql/9.4/archive" does not exist
< 2019-01-16 09:07:45.927 EST >WARNING:  archive_cleanup_command "pg_archivecleanup /var/lib/pgsql/9.4/archive %r": child process exited with exit code 2

pg_archivecleanup -d archive 000000010000003700000010.00000020.backup
pg_archivecleanup:  keep WAL file "archive/000000010000003700000010" and later
pg_archivecleanup:  removing file "archive/00000001000000370000000F"
pg_archivecleanup:  removing file "archive/00000001000000370000000E"