wal files stay in the pg_xlog dir

To whom it may concern:

We have a 2 nodes postgres cluster, postgres server v9.3.8 and repmgr is
used to enable the cluster function. barman v1.4.1 is used to take backup of
the master postgres node.

everything seems to be working except the wal files in pg_xlog on node1
keeps accumulating.

there is a backup file everytime the backup happens under the pg_xlog
directory.

-rw------- 1 postgres postgres      327 Aug 28 02:33
000000230000000F00000075.00000028.backup

pg_xlog/archive_status shows that archive is up to date.

-rw------- 1 postgres postgres 16777216 Aug 28 15:46
000000230000000F0000009B
drwx------ 2 postgres postgres    86016 Aug 28 15:47 archive_status
-rw------- 1 postgres postgres 16777216 Aug 28 16:00
000000230000000F0000009C

inside of archive_status the latest is 09B
-rw------- 1 postgres postgres 0 Aug 28 15:46 000000230000000F0000009B.done

it seems that wal files are not being removed after archive. i read
archive_cleanup? do i need to set it up for wal files clean up? if so how to
do that?

Thank you in advance!

postgresql conf file on master node

/etc/postgresql/9.3/main/postgresql.conf


#------------------------------------------------------------------------------
# WRITE AHEAD LOG
#------------------------------------------------------------------------------

# - Settings -

wal_level = 'hot_standby'                       # minimal, archive, or
hot_standby
                                        # (change requires restart)
#fsync = on                             # turns forced synchronization on or
off
#synchronous_commit = on                # synchronization level; on, off, or
local
#wal_sync_method = fsync                # the default is the first option
                                        # supported by the operating system:
                                        #   open_datasync
                                        #   fdatasync (default on Linux)
                                        #   fsync
                                        #   fsync_writethrough
                                        #   open_sync
#full_page_writes = on                  # recover from partial page writes
wal_buffers = 16MB                      # min 32kB, -1 sets based on
shared_buffers
                                        # (change requires restart)
#wal_writer_delay = 200ms               # 1-10000 milliseconds

#commit_delay = 0                       # range 0-100000, in microseconds
#commit_siblings = 5                    # range 1-1000

# - Checkpoints -

checkpoint_segments = 32                # in logfile segments, min 1, 16MB
each
#checkpoint_timeout = 5min              # range 30s-1h
checkpoint_completion_target = 0.7      # checkpoint target duration, 0.0 -
1.0
#checkpoint_warning = 30s               # 0 disables

# - Archiving -

archive_mode = on               # allows archiving to be done
                                # (change requires restart)
archive_command = 'cd . && rsync -a %p
barman@barman01:/var/lib/barman/postgresnode01/incoming/%f'
                # command to use to archive a logfile segment
#archive_timeout = 0            # force a logfile segment switch after this
                                # number of seconds; 0 disables

#------------------------------------------------------------------------------
# REPLICATION
#------------------------------------------------------------------------------

# - Master Server -

# These settings are ignored on a standby server

max_wal_senders = 10            # max number of walsender processes
                                # (change requires restart)
#wal_sender_delay = 1s          # walsender cycle time, 1-10000 milliseconds
wal_keep_segments = 2000        # in logfile segments, 16MB each; 0 disables
#vacuum_defer_cleanup_age = 0   # number of xacts by which cleanup is
delayed
#replication_timeout = 60s      # in milliseconds; 0 disables
#synchronous_standby_names = '' # standby servers that provide sync rep
                                # comma-separated list of application_name
                                # from standby(s); '*' = all

# - Standby Servers -

# These settings are ignored on a master server

hot_standby = on                        # "on" allows queries during
recovery
                                        # (change requires restart)
#max_standby_archive_delay = 30s        # max delay before canceling queries
                                        # when reading WAL from archive;
                                        # -1 allows indefinite delay
#max_standby_streaming_delay = 30s      # max delay before canceling queries
                                        # when reading streaming WAL;
                                        # -1 allows indefinite delay
#wal_receiver_status_interval = 10s     # send replies at least this often
                                        # 0 disables
#hot_standby_feedback = off             # send info from standby to prevent
                                        # query conflicts

barman conf :

description = "postgresnode01"
ssh_command = ssh postgres@postgresnode01
conninfo = host=postgresnode01 user=postgres
retention_policy = RECOVERY WINDOW OF 4 WEEKS





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