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postgresconf

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# -----------------------------

# PostgreSQL configuration file

# -----------------------------

# This file consists of lines of the form:

# name = value

# (The "=" is optional.) Whitespace may be used. Comments are introduced with

# "#" anywhere on a line. The complete list of parameter names and allowed

# values can be found in the PostgreSQL documentation.

# The commented-out settings shown in this file represent the default values.

# Re-commenting a setting is NOT sufficient to revert it to the default value;

# you need to reload the server.

# This file is read on server startup and when the server receives a SIGHUP

# signal. If you edit the file on a running system, you have to SIGHUP the

# server for the changes to take effect, or use "pg_ctl reload". Some

# parameters, which are marked below, require a server shutdown and restart to

# take effect.

# Any parameter can also be given as a command-line option to the server, e.g.,

# "postgres -c log_connections=on". Some parameters can be changed at run time

# with the "SET" SQL command.

# Memory units: kB = kilobytes Time units: ms = milliseconds

# MB = megabytes s = seconds

# GB = gigabytes min = minutes

# TB = terabytes h = hours

# d = days

#------------------------------------------------------------------------------

# FILE LOCATIONS

#------------------------------------------------------------------------------

# The default values of these variables are driven from the -D command-line

# option or PGDATA environment variable, represented here as ConfigDir.

data_directory = '/var/lib/postgresql/9.6/main' # use data in another directory

# (change requires restart)

hba_file = '/etc/postgresql/9.6/main/pg_hba.conf' # host-based authentication file

# (change requires restart)

ident_file = '/etc/postgresql/9.6/main/pg_ident.conf' # ident configuration file

# (change requires restart)

# If external_pid_file is not explicitly set, no extra PID file is written.

external_pid_file = '/var/run/postgresql/9.6-main.pid' # write an extra PID file

# (change requires restart)

#------------------------------------------------------------------------------

# CONNECTIONS AND AUTHENTICATION

#------------------------------------------------------------------------------

# - Connection Settings -

listen_addresses = '*' # what IP address(es) to listen on;

# comma-separated list of addresses;

# defaults to 'localhost'; use '*' for all

# (change requires restart)

port = 5432 # (change requires restart)

max_connections = 100 # (change requires restart)

#superuser_reserved_connections = 3 # (change requires restart)

unix_socket_directories = '/var/run/postgresql' # comma-separated list of directories

# (change requires restart)

#unix_socket_group = '' # (change requires restart)

#unix_socket_permissions = 0777 # begin with 0 to use octal notation

# (change requires restart)

#bonjour = off # advertise server via Bonjour

# (change requires restart)

#bonjour_name = '' # defaults to the computer name

# (change requires restart)

# - Security and Authentication -

#authentication_timeout = 1min # 1s-600s

ssl = on # (change requires restart)

#ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers

# (change requires restart)

#ssl_prefer_server_ciphers = on # (change requires restart)

#ssl_ecdh_curve = 'prime256v1' # (change requires restart)

ssl_cert_file = '/etc/ssl/certs/ssl-cert-snakeoil.pem' # (change requires restart)

ssl_key_file = '/etc/ssl/private/ssl-cert-snakeoil.key' # (change requires restart)

#ssl_ca_file = '' # (change requires restart)

#ssl_crl_file = '' # (change requires restart)

#password_encryption = on

#db_user_namespace = off

#row_security = on

# GSSAPI using Kerberos

#krb_server_keyfile = ''

#krb_caseins_users = off

# - TCP Keepalives -

# see "man 7 tcp" for details

#tcp_keepalives_idle = 0 # TCP_KEEPIDLE, in seconds;

# 0 selects the system default

#tcp_keepalives_interval = 0 # TCP_KEEPINTVL, in seconds;

# 0 selects the system default

#tcp_keepalives_count = 0 # TCP_KEEPCNT;

# 0 selects the system default

#------------------------------------------------------------------------------

# RESOURCE USAGE (except WAL)

#------------------------------------------------------------------------------

# - Memory -

shared_buffers = 128MB # min 128kB

shared_buffers = 512MB # min 128kB

# (change requires restart)

#huge_pages = try # on, off, or try

# (change requires restart)

#temp_buffers = 8MB # min 800kB

#max_prepared_transactions = 0 # zero disables the feature

# (change requires restart)

# Caution: it is not advisable to set max_prepared_transactions nonzero unless

# you actively intend to use prepared transactions.

#work_mem = 4MB # min 64kB

work_mem = 128MB # min 64kB

#maintenance_work_mem = 64MB # min 1MB

#replacement_sort_tuples = 150000 # limits use of replacement selection sort

#autovacuum_work_mem = -1 # min 1MB, or -1 to use maintenance_work_mem

#max_stack_depth = 2MB # min 100kB

dynamic_shared_memory_type = posix # the default is the first option

# supported by the operating system:

# posix

# sysv

# windows

# mmap

# use none to disable dynamic shared memory

# (change requires restart)

# - Disk -

#temp_file_limit = -1 # limits per-process temp file space

# in kB, or -1 for no limit

# - Kernel Resource Usage -

#max_files_per_process = 1000 # min 25

# (change requires restart)

#shared_preload_libraries = '' # (change requires restart)

shared_preload_libraries = 'pg_stat_statements'

pg_stat_statements.track = all

# - Cost-Based Vacuum Delay -

#vacuum_cost_delay = 0 # 0-100 milliseconds

#vacuum_cost_page_hit = 1 # 0-10000 credits

#vacuum_cost_page_miss = 10 # 0-10000 credits

#vacuum_cost_page_dirty = 20 # 0-10000 credits

#vacuum_cost_limit = 200 # 1-10000 credits

# - Background Writer -

#bgwriter_delay = 200ms # 10-10000ms between rounds

#bgwriter_lru_maxpages = 100 # 0-1000 max buffers written/round

#bgwriter_lru_multiplier = 2.0 # 0-10.0 multiplier on buffers scanned/round

#bgwriter_flush_after = 512kB # measured in pages, 0 disables

# - Asynchronous Behavior -

#effective_io_concurrency = 1 # 1-1000; 0 disables prefetching

#max_worker_processes = 8 # (change requires restart)

#max_parallel_workers_per_gather = 0 # taken from max_worker_processes

#old_snapshot_threshold = -1 # 1min-60d; -1 disables; 0 is immediate

# (change requires restart)

#backend_flush_after = 0 # measured in pages, 0 disables

#------------------------------------------------------------------------------

# WRITE AHEAD LOG

#------------------------------------------------------------------------------

# - Settings -

#wal_level = minimal # minimal, replica, or logical

# (change requires restart)

#fsync = on # flush data to disk for crash safety

# (turning this off can cause

# unrecoverable data corruption)

#synchronous_commit = on # synchronization level;

# off, local, remote_write, remote_apply, or on

#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_compression = off # enable compression of full-page writes

#wal_log_hints = off # also do full page writes of non-critical updates

# (change requires restart)

#wal_buffers = -1 # min 32kB, -1 sets based on shared_buffers

# (change requires restart)

#wal_writer_delay = 200ms # 1-10000 milliseconds

#wal_writer_flush_after = 1MB # measured in pages, 0 disables

#commit_delay = 0 # range 0-100000, in microseconds

#commit_siblings = 5 # range 1-1000

# - Checkpoints -

#checkpoint_timeout = 5min # range 30s-1d

#max_wal_size = 1GB

#min_wal_size = 80MB

#checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0

#checkpoint_flush_after = 256kB # measured in pages, 0 disables

#checkpoint_warning = 30s # 0 disables

# - Archiving -

#archive_mode = off # enables archiving; off, on, or always

# (change requires restart)

#archive_command = '' # command to use to archive a logfile segment

# placeholders: %p = path of file to archive

# %f = file name only

# e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'

#archive_timeout = 0 # force a logfile segment switch after this

# number of seconds; 0 disables

#------------------------------------------------------------------------------

# REPLICATION

#------------------------------------------------------------------------------

# - Sending Server(s) -

# Set these on the master and on any standby that will send replication data.

#max_wal_senders = 0 # max number of walsender processes

# (change requires restart)

#wal_keep_segments = 0 # in logfile segments, 16MB each; 0 disables

#wal_sender_timeout = 60s # in milliseconds; 0 disables

#max_replication_slots = 0 # max number of replication slots

# (change requires restart)

#track_commit_timestamp = off # collect timestamp of transaction commit

# (change requires restart)

# - Master Server -

# These settings are ignored on a standby server.

#synchronous_standby_names = '' # standby servers that provide sync rep

# number of sync standbys and comma-separated list of application_name

# from standby(s); '*' = all

#vacuum_defer_cleanup_age = 0 # number of xacts by which cleanup is delayed

# - Standby Servers -

# These settings are ignored on a master server.

#hot_standby = off # "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

#wal_receiver_timeout = 60s # time that receiver waits for

# communication from master

# in milliseconds; 0 disables

#wal_retrieve_retry_interval = 5s # time to wait before retrying to

# retrieve WAL after a failed attempt

#------------------------------------------------------------------------------

# QUERY TUNING

#------------------------------------------------------------------------------

# - Planner Method Configuration -

#enable_bitmapscan = on

#enable_hashagg = on

#enable_hashjoin = on

#enable_indexscan = on

#enable_indexonlyscan = on

#enable_material = on

#enable_mergejoin = on

#enable_nestloop = on

#enable_seqscan = on

#enable_sort = on

#enable_tidscan = on

# - Planner Cost Constants -

#seq_page_cost = 1.0 # measured on an arbitrary scale

#random_page_cost = 4.0 # same scale as above

#cpu_tuple_cost = 0.01 # same scale as above

#cpu_index_tuple_cost = 0.005 # same scale as above

#cpu_operator_cost = 0.0025 # same scale as above

#parallel_tuple_cost = 0.1 # same scale as above

#parallel_setup_cost = 1000.0 # same scale as above

#min_parallel_relation_size = 8MB

#effective_cache_size = 4GB

# - Genetic Query Optimizer -

#geqo = on

#geqo_threshold = 12

#geqo_effort = 5 # range 1-10

#geqo_pool_size = 0 # selects default based on effort

#geqo_generations = 0 # selects default based on effort

#geqo_selection_bias = 2.0 # range 1.5-2.0

#geqo_seed = 0.0 # range 0.0-1.0

# - Other Planner Options -

#default_statistics_target = 100 # range 1-10000

#constraint_exclusion = partition # on, off, or partition

#cursor_tuple_fraction = 0.1 # range 0.0-1.0

#from_collapse_limit = 8

#join_collapse_limit = 8 # 1 disables collapsing of explicit

# JOIN clauses

#force_parallel_mode = off

#------------------------------------------------------------------------------

# ERROR REPORTING AND LOGGING

#------------------------------------------------------------------------------

# - Where to Log -

#log_destination = 'stderr' # Valid values are combinations of

# stderr, csvlog, syslog, and eventlog,

# depending on platform. csvlog

# requires logging_collector to be on.

# This is used when logging to stderr:

#logging_collector = off # Enable capturing of stderr and csvlog

# into log files. Required to be on for

# csvlogs.

# (change requires restart)

# These are only used if logging_collector is on:

#log_directory = 'pg_log' # directory where log files are written,

# can be absolute or relative to PGDATA

#log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # log file name pattern,

# can include strftime() escapes

#log_file_mode = 0600 # creation mode for log files,

# begin with 0 to use octal notation

#log_truncate_on_rotation = off # If on, an existing log file with the

# same name as the new log file will be

# truncated rather than appended to.

# But such truncation only occurs on

# time-driven rotation, not on restarts

# or size-driven rotation. Default is

# off, meaning append to existing files

# in all cases.

#log_rotation_age = 1d # Automatic rotation of logfiles will

# happen after that time. 0 disables.

#log_rotation_size = 10MB # Automatic rotation of logfiles will

# happen after that much log output.

# 0 disables.

# These are relevant when logging to syslog:

#syslog_facility = 'LOCAL0'

#syslog_ident = 'postgres'

#syslog_sequence_numbers = on

#syslog_split_messages = on

# This is only relevant when logging to eventlog (win32):

# (change requires restart)

#event_source = 'PostgreSQL'

# - When to Log -

#log_min_messages = warning # values in order of decreasing detail:

# debug5

# debug4

# debug3

# debug2

# debug1

# info

# notice

# warning

# error

# log

# fatal

# panic

#log_min_error_statement = error # values in order of decreasing detail:

# debug5

# debug4

# debug3

# debug2

# debug1

# info

# notice

# warning

# error

# log

# fatal

# panic (effectively off)

#log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements

#log_min_error_statement = error # values in order of decreasing detail:

# and their durations, > 0 logs only

# debug5

# statements running at least this number

# debug4

# of milliseconds

# debug3

# debug2

# debug1

# info

# notice

# warning

# error

# log

# fatal

# panic (effectively off)

#log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements

# and their durations, > 0 logs only

# statements running at least this number

# of milliseconds

log_min_duration_statement = 5000

# - What to Log -

#debug_print_parse = off

#debug_print_rewritten = off

#debug_print_plan = off

#debug_pretty_print = on

#log_checkpoints = off

#log_connections = off

#log_disconnections = off

#log_duration = off

#log_error_verbosity = default # terse, default, or verbose messages

#log_hostname = off

log_line_prefix = '%m [%p] %q%u@%d ' # special values:

# %a = application name

# %u = user name

# %d = database name

# %r = remote host and port

# %h = remote host

# %p = process ID

# %t = timestamp without milliseconds

# %m = timestamp with milliseconds

# %n = timestamp with milliseconds (as a Unix epoch)

# %i = command tag

# %e = SQL state

# %c = session ID

# %l = session line number

# %s = session start timestamp

# %v = virtual transaction ID

# %x = transaction ID (0 if none)

# %q = stop here in non-session

# processes

# %% = '%'

# e.g. '<%u%%%d> '

#log_lock_waits = off # log lock waits >= deadlock_timeout

#log_statement = 'none' # none, ddl, mod, all

#log_replication_commands = off

#log_temp_files = -1 # log temporary files equal or larger

# than the specified size in kilobytes;

# -1 disables, 0 logs all temp files

log_timezone = 'UTC'

# - Process Title -

cluster_name = '9.6/main' # added to process titles if nonempty

# (change requires restart)

#update_process_title = on

#------------------------------------------------------------------------------

# RUNTIME STATISTICS

#------------------------------------------------------------------------------

# - Query/Index Statistics Collector -

#track_activities = on

#track_counts = on

#track_io_timing = off

#track_functions = none # none, pl, all

#track_activity_query_size = 1024 # (change requires restart)

stats_temp_directory = '/var/run/postgresql/9.6-main.pg_stat_tmp'

# - Statistics Monitoring -

#log_parser_stats = off

#log_planner_stats = off

#log_executor_stats = off

#log_statement_stats = off

#------------------------------------------------------------------------------

# AUTOVACUUM PARAMETERS

#------------------------------------------------------------------------------

#autovacuum = on # Enable autovacuum subprocess? 'on'

# requires track_counts to also be on.

#log_autovacuum_min_duration = -1 # -1 disables, 0 logs all actions and

# their durations, > 0 logs only

# actions running at least this number

# of milliseconds.

#autovacuum_max_workers = 3 # max number of autovacuum subprocesses

# (change requires restart)

#autovacuum_naptime = 1min # time between autovacuum runs

#autovacuum_vacuum_threshold = 50 # min number of row updates before

# vacuum

#autovacuum_analyze_threshold = 50 # min number of row updates before

# analyze

#autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum

#autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze

#autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum

# (change requires restart)

#autovacuum_multixact_freeze_max_age = 400000000 # maximum multixact age

# before forced vacuum

# (change requires restart)

#autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay for

# autovacuum, in milliseconds;

# -1 means use vacuum_cost_delay

#autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for

# autovacuum, -1 means use

# vacuum_cost_limit

#------------------------------------------------------------------------------

# CLIENT CONNECTION DEFAULTS

#------------------------------------------------------------------------------

# - Statement Behavior -

#client_min_messages = notice # values in order of decreasing detail:

# debug5

# debug4

# debug3

# debug2

# debug1

# log

# notice

# warning

# error

#search_path = '"$user", public' # schema names

#default_tablespace = '' # a tablespace name, '' uses the default

#temp_tablespaces = '' # a list of tablespace names, '' uses

# only default tablespace

#check_function_bodies = on

#default_transaction_isolation = 'read committed'

#default_transaction_read_only = off

#default_transaction_deferrable = off

#session_replication_role = 'origin'

#statement_timeout = 0 # in milliseconds, 0 is disabled

#lock_timeout = 0 # in milliseconds, 0 is disabled

#idle_in_transaction_session_timeout = 0 # in milliseconds, 0 is disabled

#vacuum_freeze_min_age = 50000000

#vacuum_freeze_table_age = 150000000

#vacuum_multixact_freeze_min_age = 5000000

#vacuum_multixact_freeze_table_age = 150000000

#bytea_output = 'hex' # hex, escape

#xmlbinary = 'base64'

#xmloption = 'content'

#gin_fuzzy_search_limit = 0

#gin_pending_list_limit = 4MB

# - Locale and Formatting -

datestyle = 'iso, mdy'

#intervalstyle = 'postgres'

timezone = 'UTC'

#timezone_abbreviations = 'Default' # Select the set of available time zone

# abbreviations. Currently, there are

# Default

# Australia (historical usage)

# India

# You can create your own file in

# share/timezonesets/.

#extra_float_digits = 0 # min -15, max 3

#client_encoding = sql_ascii # actually, defaults to database

# encoding

# These settings are initialized by initdb, but they can be changed.

lc_messages = 'C.UTF-8' # locale for system error message

# strings

lc_monetary = 'C.UTF-8' # locale for monetary formatting

lc_numeric = 'C.UTF-8' # locale for number formatting

lc_time = 'C.UTF-8' # locale for time formatting

# default configuration for text search

default_text_search_config = 'pg_catalog.english'

# - Other Defaults -

#dynamic_library_path = '$libdir'

#local_preload_libraries = ''

#session_preload_libraries = ''

#------------------------------------------------------------------------------

# LOCK MANAGEMENT

#------------------------------------------------------------------------------

#deadlock_timeout = 1s

#max_locks_per_transaction = 64 # min 10

# (change requires restart)

#max_pred_locks_per_transaction = 64 # min 10

# (change requires restart)

#------------------------------------------------------------------------------

# VERSION/PLATFORM COMPATIBILITY

#------------------------------------------------------------------------------

# - Previous PostgreSQL Versions -

#array_nulls = on

#backslash_quote = safe_encoding # on, off, or safe_encoding

#default_with_oids = off

#escape_string_warning = on

#lo_compat_privileges = off

#operator_precedence_warning = off

#quote_all_identifiers = off

#sql_inheritance = on

#standard_conforming_strings = on

#synchronize_seqscans = on

# - Other Platforms and Clients -

#transform_null_equals = off

#------------------------------------------------------------------------------

# ERROR HANDLING

#------------------------------------------------------------------------------

#exit_on_error = off # terminate session on any error?

#restart_after_crash = on # reinitialize after backend crash?

#data_sync_retry = off # retry or panic on failure to fsync data?

#------------------------------------------------------------------------------

# CONFIG FILE INCLUDES

#------------------------------------------------------------------------------

# These options allow settings to be loaded from files other than the

# default postgresql.conf.

include_dir = 'conf.d' # include files ending in '.conf' from

# directory 'conf.d'

#include_if_exists = 'exists.conf' # include file only if it exists

#include = 'special.conf' # include file

#------------------------------------------------------------------------------

# CUSTOMIZED OPTIONS

#------------------------------------------------------------------------------

# Add settings for extensions here

client_encoding = utf8

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# -----------------------------
# PostgreSQL configuration file
# -----------------------------
#
# This file consists of lines of the form:
#
#   name = value
#
# (The "=" is optional.)  Whitespace may be used.  Comments are introduced with
# "#" anywhere on a line.  The complete list of parameter names and allowed
# values can be found in the PostgreSQL documentation.
#
# The commented-out settings shown in this file represent the default values.
# Re-commenting a setting is NOT sufficient to revert it to the default value;
# you need to reload the server.
#
# This file is read on server startup and when the server receives a SIGHUP
# signal.  If you edit the file on a running system, you have to SIGHUP the
# server for the changes to take effect, or use "pg_ctl reload".  Some
# parameters, which are marked below, require a server shutdown and restart to
# take effect.
#
# Any parameter can also be given as a command-line option to the server, e.g.,
# "postgres -c log_connections=on".  Some parameters can be changed at run time
# with the "SET" SQL command.
#
# Memory units:  kB = kilobytes        Time units:  ms  = milliseconds
#                MB = megabytes                     s   = seconds
#                GB = gigabytes                     min = minutes
#                TB = terabytes                     h   = hours
#                                                   d   = days

#------------------------------------------------------------------------------
# FILE LOCATIONS
#------------------------------------------------------------------------------

# The default values of these variables are driven from the -D command-line
# option or PGDATA environment variable, represented here as ConfigDir.

data_directory = '/var/lib/postgresql/9.6/main'         # use data in another directory
                                        # (change requires restart)
hba_file = '/etc/postgresql/9.6/main/pg_hba.conf'       # host-based authentication file
                                        # (change requires restart)
ident_file = '/etc/postgresql/9.6/main/pg_ident.conf'   # ident configuration file
                                        # (change requires restart)

# If external_pid_file is not explicitly set, no extra PID file is written.
external_pid_file = '/var/run/postgresql/9.6-main.pid'                  # write an extra PID file
                                        # (change requires restart)

#------------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION
#------------------------------------------------------------------------------

# - Connection Settings -

listen_addresses = '*'          # what IP address(es) to listen on;
                                        # comma-separated list of addresses;
                                        # defaults to 'localhost'; use '*' for all
                                        # (change requires restart)
port = 5432                             # (change requires restart)
max_connections = 100                   # (change requires restart)
#superuser_reserved_connections = 3     # (change requires restart)
unix_socket_directories = '/var/run/postgresql' # comma-separated list of directories
                                        # (change requires restart)
#unix_socket_group = ''                 # (change requires restart)
#unix_socket_permissions = 0777         # begin with 0 to use octal notation
                                        # (change requires restart)
#bonjour = off                          # advertise server via Bonjour
                                        # (change requires restart)
#bonjour_name = ''                      # defaults to the computer name
                                        # (change requires restart)

# - Security and Authentication -

#authentication_timeout = 1min          # 1s-600s
ssl = on                                # (change requires restart)
#ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
                                        # (change requires restart)
#ssl_prefer_server_ciphers = on         # (change requires restart)
#ssl_ecdh_curve = 'prime256v1'          # (change requires restart)
ssl_cert_file = '/etc/ssl/certs/ssl-cert-snakeoil.pem'          # (change requires restart)
ssl_key_file = '/etc/ssl/private/ssl-cert-snakeoil.key'         # (change requires restart)
#ssl_ca_file = ''                       # (change requires restart)
#ssl_crl_file = ''                      # (change requires restart)
#password_encryption = on
#db_user_namespace = off
#row_security = on

# GSSAPI using Kerberos
#krb_server_keyfile = ''
#krb_caseins_users = off

# - TCP Keepalives -
# see "man 7 tcp" for details

#tcp_keepalives_idle = 0                # TCP_KEEPIDLE, in seconds;
                                        # 0 selects the system default
#tcp_keepalives_interval = 0            # TCP_KEEPINTVL, in seconds;
                                        # 0 selects the system default
#tcp_keepalives_count = 0               # TCP_KEEPCNT;
                                        # 0 selects the system default

#------------------------------------------------------------------------------
# RESOURCE USAGE (except WAL)
#------------------------------------------------------------------------------

# - Memory -

shared_buffers = 128MB                  # min 128kB
                                        # (change requires restart)
#huge_pages = try                       # on, off, or try
                                        # (change requires restart)
#temp_buffers = 8MB                     # min 800kB
#max_prepared_transactions = 0          # zero disables the feature
                                        # (change requires restart)
# Caution: it is not advisable to set max_prepared_transactions nonzero unless
# you actively intend to use prepared transactions.
#work_mem = 4MB                         # min 64kB
#maintenance_work_mem = 64MB            # min 1MB
#replacement_sort_tuples = 150000       # limits use of replacement selection sort
#autovacuum_work_mem = -1               # min 1MB, or -1 to use maintenance_work_mem
#max_stack_depth = 2MB                  # min 100kB
dynamic_shared_memory_type = posix      # the default is the first option
                                        # supported by the operating system:
                                        #   posix
                                        #   sysv
                                        #   windows
                                        #   mmap
                                        # use none to disable dynamic shared memory
                                        # (change requires restart)

# - Disk -

#temp_file_limit = -1                   # limits per-process temp file space
                                        # in kB, or -1 for no limit

# - Kernel Resource Usage -

#max_files_per_process = 1000           # min 25
                                        # (change requires restart)
#shared_preload_libraries = ''          # (change requires restart)

# - Cost-Based Vacuum Delay -

#vacuum_cost_delay = 0                  # 0-100 milliseconds
#vacuum_cost_page_hit = 1               # 0-10000 credits
#vacuum_cost_page_miss = 10             # 0-10000 credits
#vacuum_cost_page_dirty = 20            # 0-10000 credits
#vacuum_cost_limit = 200                # 1-10000 credits

# - Background Writer -

#bgwriter_delay = 200ms                 # 10-10000ms between rounds
#bgwriter_lru_maxpages = 100            # 0-1000 max buffers written/round
#bgwriter_lru_multiplier = 2.0          # 0-10.0 multiplier on buffers scanned/round
#bgwriter_flush_after = 512kB           # measured in pages, 0 disables

# - Asynchronous Behavior -

#effective_io_concurrency = 1           # 1-1000; 0 disables prefetching
#max_worker_processes = 8               # (change requires restart)
#max_parallel_workers_per_gather = 0    # taken from max_worker_processes
#old_snapshot_threshold = -1            # 1min-60d; -1 disables; 0 is immediate
                                        # (change requires restart)
#backend_flush_after = 0                # measured in pages, 0 disables

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

# - Settings -

#wal_level = minimal                    # minimal, replica, or logical
                                        # (change requires restart)
#fsync = on                             # flush data to disk for crash safety
                                                # (turning this off can cause
                                                # unrecoverable data corruption)
#synchronous_commit = on                # synchronization level;
                                        # off, local, remote_write, remote_apply, or on
#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_compression = off                  # enable compression of full-page writes
#wal_log_hints = off                    # also do full page writes of non-critical updates
                                        # (change requires restart)
#wal_buffers = -1                       # min 32kB, -1 sets based on shared_buffers
                                        # (change requires restart)
#wal_writer_delay = 200ms               # 1-10000 milliseconds
#wal_writer_flush_after = 1MB           # measured in pages, 0 disables

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

# - Checkpoints -

#checkpoint_timeout = 5min              # range 30s-1d
#max_wal_size = 1GB
#min_wal_size = 80MB
#checkpoint_completion_target = 0.5     # checkpoint target duration, 0.0 - 1.0
#checkpoint_flush_after = 256kB         # measured in pages, 0 disables
#checkpoint_warning = 30s               # 0 disables

# - Archiving -

#archive_mode = off             # enables archiving; off, on, or always
                                # (change requires restart)
#archive_command = ''           # command to use to archive a logfile segment
                                # placeholders: %p = path of file to archive
                                #               %f = file name only
                                # e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
#archive_timeout = 0            # force a logfile segment switch after this
                                # number of seconds; 0 disables

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

# - Sending Server(s) -

# Set these on the master and on any standby that will send replication data.

#max_wal_senders = 0            # max number of walsender processes
                                # (change requires restart)
#wal_keep_segments = 0          # in logfile segments, 16MB each; 0 disables
#wal_sender_timeout = 60s       # in milliseconds; 0 disables

#max_replication_slots = 0      # max number of replication slots
                                # (change requires restart)
#track_commit_timestamp = off   # collect timestamp of transaction commit
                                # (change requires restart)

# - Master Server -

# These settings are ignored on a standby server.

#synchronous_standby_names = '' # standby servers that provide sync rep
                                # number of sync standbys and comma-separated list of application_name
                                # from standby(s); '*' = all
#vacuum_defer_cleanup_age = 0   # number of xacts by which cleanup is delayed

# - Standby Servers -

# These settings are ignored on a master server.

#hot_standby = off                      # "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
#wal_receiver_timeout = 60s             # time that receiver waits for
                                        # communication from master
                                        # in milliseconds; 0 disables
#wal_retrieve_retry_interval = 5s       # time to wait before retrying to
                                        # retrieve WAL after a failed attempt

#------------------------------------------------------------------------------
# QUERY TUNING
#------------------------------------------------------------------------------

# - Planner Method Configuration -

#enable_bitmapscan = on
#enable_hashagg = on
#enable_hashjoin = on
#enable_indexscan = on
#enable_indexonlyscan = on
#enable_material = on
#enable_mergejoin = on
#enable_nestloop = on
#enable_seqscan = on
#enable_sort = on
#enable_tidscan = on

# - Planner Cost Constants -

#seq_page_cost = 1.0                    # measured on an arbitrary scale
#random_page_cost = 4.0                 # same scale as above
#cpu_tuple_cost = 0.01                  # same scale as above
#cpu_index_tuple_cost = 0.005           # same scale as above
#cpu_operator_cost = 0.0025             # same scale as above
#parallel_tuple_cost = 0.1              # same scale as above
#parallel_setup_cost = 1000.0   # same scale as above
#min_parallel_relation_size = 8MB
#effective_cache_size = 4GB

# - Genetic Query Optimizer -

#geqo = on
#geqo_threshold = 12
#geqo_effort = 5                        # range 1-10
#geqo_pool_size = 0                     # selects default based on effort
#geqo_generations = 0                   # selects default based on effort
#geqo_selection_bias = 2.0              # range 1.5-2.0
#geqo_seed = 0.0                        # range 0.0-1.0

# - Other Planner Options -

#default_statistics_target = 100        # range 1-10000
#constraint_exclusion = partition       # on, off, or partition
#cursor_tuple_fraction = 0.1            # range 0.0-1.0
#from_collapse_limit = 8
#join_collapse_limit = 8                # 1 disables collapsing of explicit
                                        # JOIN clauses
#force_parallel_mode = off

#------------------------------------------------------------------------------
# ERROR REPORTING AND LOGGING
#------------------------------------------------------------------------------

# - Where to Log -

#log_destination = 'stderr'             # Valid values are combinations of
                                        # stderr, csvlog, syslog, and eventlog,
                                        # depending on platform.  csvlog
                                        # requires logging_collector to be on.

# This is used when logging to stderr:
#logging_collector = off                # Enable capturing of stderr and csvlog
                                        # into log files. Required to be on for
                                        # csvlogs.
                                        # (change requires restart)

# These are only used if logging_collector is on:
#log_directory = 'pg_log'               # directory where log files are written,
                                        # can be absolute or relative to PGDATA
#log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'        # log file name pattern,
                                        # can include strftime() escapes
#log_file_mode = 0600                   # creation mode for log files,
                                        # begin with 0 to use octal notation
#log_truncate_on_rotation = off         # If on, an existing log file with the
                                        # same name as the new log file will be
                                        # truncated rather than appended to.
                                        # But such truncation only occurs on
                                        # time-driven rotation, not on restarts
                                        # or size-driven rotation.  Default is
                                        # off, meaning append to existing files
                                        # in all cases.
#log_rotation_age = 1d                  # Automatic rotation of logfiles will
                                        # happen after that time.  0 disables.
#log_rotation_size = 10MB               # Automatic rotation of logfiles will
                                        # happen after that much log output.
                                        # 0 disables.

# These are relevant when logging to syslog:
#syslog_facility = 'LOCAL0'
#syslog_ident = 'postgres'
#syslog_sequence_numbers = on
#syslog_split_messages = on

# This is only relevant when logging to eventlog (win32):
# (change requires restart)
#event_source = 'PostgreSQL'

# - When to Log -

#log_min_messages = warning             # values in order of decreasing detail:
                                        #   debug5
                                        #   debug4
                                        #   debug3
                                        #   debug2
                                        #   debug1
                                        #   info
                                        #   notice
                                        #   warning
                                        #   error
                                        #   log
                                        #   fatal
                                        #   panic

#log_min_error_statement = error        # values in order of decreasing detail:
                                        #   debug5
                                        #   debug4
                                        #   debug3
                                        #   debug2
                                        #   debug1
                                        #   info
                                        #   notice
                                        #   warning
                                        #   error
                                        #   log
                                        #   fatal
                                        #   panic (effectively off)

#log_min_duration_statement = -1        # -1 is disabled, 0 logs all statements
                                        # and their durations, > 0 logs only
                                        # statements running at least this number
                                        # of milliseconds

# - What to Log -

#debug_print_parse = off
#debug_print_rewritten = off
#debug_print_plan = off
#debug_pretty_print = on
#log_checkpoints = off
#log_connections = off
#log_disconnections = off
#log_duration = off
#log_error_verbosity = default          # terse, default, or verbose messages
#log_hostname = off
log_line_prefix = '%m [%p] %q%u@%d '                    # special values:
                                        #   %a = application name
                                        #   %u = user name
                                        #   %d = database name
                                        #   %r = remote host and port
                                        #   %h = remote host
                                        #   %p = process ID
                                        #   %t = timestamp without milliseconds
                                        #   %m = timestamp with milliseconds
                                        #   %n = timestamp with milliseconds (as a Unix epoch)
                                        #   %i = command tag
                                        #   %e = SQL state
                                        #   %c = session ID
                                        #   %l = session line number
                                        #   %s = session start timestamp
                                        #   %v = virtual transaction ID
                                        #   %x = transaction ID (0 if none)
                                        #   %q = stop here in non-session
                                        #        processes
                                        #   %% = '%'
                                        # e.g. '<%u%%%d> '
#log_lock_waits = off                   # log lock waits >= deadlock_timeout
#log_statement = 'none'                 # none, ddl, mod, all
#log_replication_commands = off
#log_temp_files = -1                    # log temporary files equal or larger
                                        # than the specified size in kilobytes;
                                        # -1 disables, 0 logs all temp files
log_timezone = 'UTC'

# - Process Title -

cluster_name = '9.6/main'                       # added to process titles if nonempty
                                        # (change requires restart)
#update_process_title = on

#------------------------------------------------------------------------------
# RUNTIME STATISTICS
#------------------------------------------------------------------------------

# - Query/Index Statistics Collector -

#track_activities = on
#track_counts = on
#track_io_timing = off
#track_functions = none                 # none, pl, all
#track_activity_query_size = 1024       # (change requires restart)
stats_temp_directory = '/var/run/postgresql/9.6-main.pg_stat_tmp'

# - Statistics Monitoring -

#log_parser_stats = off
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off

#------------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#------------------------------------------------------------------------------

#autovacuum = on                        # Enable autovacuum subprocess?  'on'
                                        # requires track_counts to also be on.
#log_autovacuum_min_duration = -1       # -1 disables, 0 logs all actions and
                                        # their durations, > 0 logs only
                                        # actions running at least this number
                                        # of milliseconds.
#autovacuum_max_workers = 3             # max number of autovacuum subprocesses
                                        # (change requires restart)
#autovacuum_naptime = 1min              # time between autovacuum runs
#autovacuum_vacuum_threshold = 50       # min number of row updates before
                                        # vacuum
#autovacuum_analyze_threshold = 50      # min number of row updates before
                                        # analyze
#autovacuum_vacuum_scale_factor = 0.2   # fraction of table size before vacuum
#autovacuum_analyze_scale_factor = 0.1  # fraction of table size before analyze
#autovacuum_freeze_max_age = 200000000  # maximum XID age before forced vacuum
                                        # (change requires restart)
#autovacuum_multixact_freeze_max_age = 400000000        # maximum multixact age
                                        # before forced vacuum
                                        # (change requires restart)
#autovacuum_vacuum_cost_delay = 20ms    # default vacuum cost delay for
                                        # autovacuum, in milliseconds;
                                        # -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1      # default vacuum cost limit for
                                        # autovacuum, -1 means use
                                        # vacuum_cost_limit

#------------------------------------------------------------------------------
# CLIENT CONNECTION DEFAULTS
#------------------------------------------------------------------------------

# - Statement Behavior -

#client_min_messages = notice           # values in order of decreasing detail:
                                        #   debug5
                                        #   debug4
                                        #   debug3
                                        #   debug2
                                        #   debug1
                                        #   log
                                        #   notice
                                        #   warning
                                        #   error
#search_path = '"$user", public'        # schema names
#default_tablespace = ''                # a tablespace name, '' uses the default
#temp_tablespaces = ''                  # a list of tablespace names, '' uses
                                        # only default tablespace
#check_function_bodies = on
#default_transaction_isolation = 'read committed'
#default_transaction_read_only = off
#default_transaction_deferrable = off
#session_replication_role = 'origin'
#statement_timeout = 0                  # in milliseconds, 0 is disabled
#lock_timeout = 0                       # in milliseconds, 0 is disabled
#idle_in_transaction_session_timeout = 0                # in milliseconds, 0 is disabled
#vacuum_freeze_min_age = 50000000
#vacuum_freeze_table_age = 150000000
#vacuum_multixact_freeze_min_age = 5000000
#vacuum_multixact_freeze_table_age = 150000000
#bytea_output = 'hex'                   # hex, escape
#xmlbinary = 'base64'
#xmloption = 'content'
#gin_fuzzy_search_limit = 0
#gin_pending_list_limit = 4MB

# - Locale and Formatting -

datestyle = 'iso, mdy'
#intervalstyle = 'postgres'
timezone = 'UTC'
#timezone_abbreviations = 'Default'     # Select the set of available time zone
                                        # abbreviations.  Currently, there are
                                        #   Default
                                        #   Australia (historical usage)
                                        #   India
                                        # You can create your own file in
                                        # share/timezonesets/.
#extra_float_digits = 0                 # min -15, max 3
#client_encoding = sql_ascii            # actually, defaults to database
                                        # encoding

# These settings are initialized by initdb, but they can be changed.
lc_messages = 'en_US'                   # locale for system error message
                                        # strings
lc_monetary = 'en_US'                   # locale for monetary formatting
lc_numeric = 'en_US'                    # locale for number formatting
lc_time = 'en_US'                               # locale for time formatting

# default configuration for text search
default_text_search_config = 'pg_catalog.english'

# - Other Defaults -

#dynamic_library_path = '$libdir'
#local_preload_libraries = ''
#session_preload_libraries = ''

#------------------------------------------------------------------------------
# LOCK MANAGEMENT
#------------------------------------------------------------------------------

#deadlock_timeout = 1s
#max_locks_per_transaction = 64         # min 10
                                        # (change requires restart)
#max_pred_locks_per_transaction = 64    # min 10
                                        # (change requires restart)

#------------------------------------------------------------------------------
# VERSION/PLATFORM COMPATIBILITY
#------------------------------------------------------------------------------

# - Previous PostgreSQL Versions -

#array_nulls = on
#backslash_quote = safe_encoding        # on, off, or safe_encoding
#default_with_oids = off
#escape_string_warning = on
#lo_compat_privileges = off
#operator_precedence_warning = off
#quote_all_identifiers = off
#sql_inheritance = on
#standard_conforming_strings = on
#synchronize_seqscans = on

# - Other Platforms and Clients -

#transform_null_equals = off

#------------------------------------------------------------------------------
# ERROR HANDLING
#------------------------------------------------------------------------------

#exit_on_error = off                    # terminate session on any error?
#restart_after_crash = on               # reinitialize after backend crash?
#data_sync_retry = off                  # retry or panic on failure to fsync data?

#------------------------------------------------------------------------------
# CONFIG FILE INCLUDES
#------------------------------------------------------------------------------

# These options allow settings to be loaded from files other than the
# default postgresql.conf.

include_dir = 'conf.d'                  # include files ending in '.conf' from
                                        # directory 'conf.d'
#include_if_exists = 'exists.conf'      # include file only if it exists
#include = 'special.conf'               # include file

#------------------------------------------------------------------------------
# CUSTOMIZED OPTIONS
#------------------------------------------------------------------------------

# Add settings for extensions here
client_encoding = utf8

変更されたテキスト

ファイルを開く

#------------------------------------------------------------------------------
# FILE LOCATIONS
#------------------------------------------------------------------------------

# The default values of these variables are driven from the -D command-line
# option or PGDATA environment variable, represented here as ConfigDir.

data_directory = '/var/lib/postgresql/9.6/main'		# use data in another directory
					# (change requires restart)
hba_file = '/etc/postgresql/9.6/main/pg_hba.conf'	# host-based authentication file
					# (change requires restart)
ident_file = '/etc/postgresql/9.6/main/pg_ident.conf'	# ident configuration file
					# (change requires restart)

# If external_pid_file is not explicitly set, no extra PID file is written.
external_pid_file = '/var/run/postgresql/9.6-main.pid'			# write an extra PID file
					# (change requires restart)

#------------------------------------------------------------------------------
# CONNECTIONS AND AUTHENTICATION
#------------------------------------------------------------------------------

# - Connection Settings -

# - Security and Authentication -

#authentication_timeout = 1min		# 1s-600s
ssl = on				# (change requires restart)
#ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
					# (change requires restart)
#ssl_prefer_server_ciphers = on		# (change requires restart)
#ssl_ecdh_curve = 'prime256v1'		# (change requires restart)
ssl_cert_file = '/etc/ssl/certs/ssl-cert-snakeoil.pem'		# (change requires restart)
ssl_key_file = '/etc/ssl/private/ssl-cert-snakeoil.key'		# (change requires restart)
#ssl_ca_file = ''			# (change requires restart)
#ssl_crl_file = ''			# (change requires restart)
#password_encryption = on
#db_user_namespace = off
#row_security = on

# GSSAPI using Kerberos
#krb_server_keyfile = ''
#krb_caseins_users = off

# - TCP Keepalives -
# see "man 7 tcp" for details

#------------------------------------------------------------------------------
# RESOURCE USAGE (except WAL)
#------------------------------------------------------------------------------

# - Memory -

shared_buffers = 512MB			# min 128kB
					# (change requires restart)
#huge_pages = try			# on, off, or try
					# (change requires restart)
#temp_buffers = 8MB			# min 800kB
#max_prepared_transactions = 0		# zero disables the feature
					# (change requires restart)
# Caution: it is not advisable to set max_prepared_transactions nonzero unless
# you actively intend to use prepared transactions.
work_mem = 128MB				# min 64kB
#maintenance_work_mem = 64MB		# min 1MB
#replacement_sort_tuples = 150000	# limits use of replacement selection sort
#autovacuum_work_mem = -1		# min 1MB, or -1 to use maintenance_work_mem
#max_stack_depth = 2MB			# min 100kB
dynamic_shared_memory_type = posix	# the default is the first option
					# supported by the operating system:
					#   posix
					#   sysv
					#   windows
					#   mmap
					# use none to disable dynamic shared memory
					# (change requires restart)

# - Disk -

#temp_file_limit = -1			# limits per-process temp file space
					# in kB, or -1 for no limit

# - Kernel Resource Usage -

#max_files_per_process = 1000		# min 25
					# (change requires restart)
#shared_preload_libraries = ''		# (change requires restart)
shared_preload_libraries = 'pg_stat_statements'
pg_stat_statements.track = all

# - Cost-Based Vacuum Delay -

#vacuum_cost_delay = 0			# 0-100 milliseconds
#vacuum_cost_page_hit = 1		# 0-10000 credits
#vacuum_cost_page_miss = 10		# 0-10000 credits
#vacuum_cost_page_dirty = 20		# 0-10000 credits
#vacuum_cost_limit = 200		# 1-10000 credits

# - Background Writer -

#bgwriter_delay = 200ms			# 10-10000ms between rounds
#bgwriter_lru_maxpages = 100		# 0-1000 max buffers written/round
#bgwriter_lru_multiplier = 2.0		# 0-10.0 multiplier on buffers scanned/round
#bgwriter_flush_after = 512kB		# measured in pages, 0 disables

# - Asynchronous Behavior -

#effective_io_concurrency = 1		# 1-1000; 0 disables prefetching
#max_worker_processes = 8		# (change requires restart)
#max_parallel_workers_per_gather = 0	# taken from max_worker_processes
#old_snapshot_threshold = -1		# 1min-60d; -1 disables; 0 is immediate
					# (change requires restart)
#backend_flush_after = 0		# measured in pages, 0 disables

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

# - Settings -

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

# - Checkpoints -

#checkpoint_timeout = 5min		# range 30s-1d
#max_wal_size = 1GB
#min_wal_size = 80MB
#checkpoint_completion_target = 0.5	# checkpoint target duration, 0.0 - 1.0
#checkpoint_flush_after = 256kB		# measured in pages, 0 disables
#checkpoint_warning = 30s		# 0 disables

# - Archiving -

#archive_mode = off		# enables archiving; off, on, or always
				# (change requires restart)
#archive_command = ''		# command to use to archive a logfile segment
				# placeholders: %p = path of file to archive
				#               %f = file name only
				# e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
#archive_timeout = 0		# force a logfile segment switch after this
				# number of seconds; 0 disables

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

# - Sending Server(s) -

# Set these on the master and on any standby that will send replication data.

#max_wal_senders = 0		# max number of walsender processes
				# (change requires restart)
#wal_keep_segments = 0		# in logfile segments, 16MB each; 0 disables
#wal_sender_timeout = 60s	# in milliseconds; 0 disables

#max_replication_slots = 0	# max number of replication slots
				# (change requires restart)
#track_commit_timestamp = off	# collect timestamp of transaction commit
				# (change requires restart)

# - Master Server -

# These settings are ignored on a standby server.

#synchronous_standby_names = ''	# standby servers that provide sync rep
				# number of sync standbys and comma-separated list of application_name
				# from standby(s); '*' = all
#vacuum_defer_cleanup_age = 0	# number of xacts by which cleanup is delayed

# - Standby Servers -

# These settings are ignored on a master server.

#------------------------------------------------------------------------------
# QUERY TUNING
#------------------------------------------------------------------------------

# - Planner Method Configuration -

# - Planner Cost Constants -

#seq_page_cost = 1.0			# measured on an arbitrary scale
#random_page_cost = 4.0			# same scale as above
#cpu_tuple_cost = 0.01			# same scale as above
#cpu_index_tuple_cost = 0.005		# same scale as above
#cpu_operator_cost = 0.0025		# same scale as above
#parallel_tuple_cost = 0.1		# same scale as above
#parallel_setup_cost = 1000.0	# same scale as above
#min_parallel_relation_size = 8MB
#effective_cache_size = 4GB

# - Genetic Query Optimizer -

#geqo = on
#geqo_threshold = 12
#geqo_effort = 5			# range 1-10
#geqo_pool_size = 0			# selects default based on effort
#geqo_generations = 0			# selects default based on effort
#geqo_selection_bias = 2.0		# range 1.5-2.0
#geqo_seed = 0.0			# range 0.0-1.0

# - Other Planner Options -

#default_statistics_target = 100	# range 1-10000
#constraint_exclusion = partition	# on, off, or partition
#cursor_tuple_fraction = 0.1		# range 0.0-1.0
#from_collapse_limit = 8
#join_collapse_limit = 8		# 1 disables collapsing of explicit
					# JOIN clauses
#force_parallel_mode = off

#------------------------------------------------------------------------------
# ERROR REPORTING AND LOGGING
#------------------------------------------------------------------------------

# - Where to Log -

#log_destination = 'stderr'		# Valid values are combinations of
					# stderr, csvlog, syslog, and eventlog,
					# depending on platform.  csvlog
					# requires logging_collector to be on.

# This is used when logging to stderr:
#logging_collector = off		# Enable capturing of stderr and csvlog
					# into log files. Required to be on for
					# csvlogs.
					# (change requires restart)

# These are relevant when logging to syslog:
#syslog_facility = 'LOCAL0'
#syslog_ident = 'postgres'
#syslog_sequence_numbers = on
#syslog_split_messages = on

# This is only relevant when logging to eventlog (win32):
# (change requires restart)
#event_source = 'PostgreSQL'

# - When to Log -

#log_min_duration_statement = -1	# -1 is disabled, 0 logs all statements
					# and their durations, > 0 logs only
					# statements running at least this number
					# of milliseconds
log_min_duration_statement = 5000

# - What to Log -

# - Process Title -

cluster_name = '9.6/main'			# added to process titles if nonempty
					# (change requires restart)
#update_process_title = on

#------------------------------------------------------------------------------
# RUNTIME STATISTICS
#------------------------------------------------------------------------------

# - Query/Index Statistics Collector -

#track_activities = on
#track_counts = on
#track_io_timing = off
#track_functions = none			# none, pl, all
#track_activity_query_size = 1024	# (change requires restart)
stats_temp_directory = '/var/run/postgresql/9.6-main.pg_stat_tmp'

# - Statistics Monitoring -

#log_parser_stats = off
#log_planner_stats = off
#log_executor_stats = off
#log_statement_stats = off

#------------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#------------------------------------------------------------------------------

#------------------------------------------------------------------------------
# CLIENT CONNECTION DEFAULTS
#------------------------------------------------------------------------------

# - Statement Behavior -

#client_min_messages = notice		# values in order of decreasing detail:
					#   debug5
					#   debug4
					#   debug3
					#   debug2
					#   debug1
					#   log
					#   notice
					#   warning
					#   error
#search_path = '"$user", public'	# schema names
#default_tablespace = ''		# a tablespace name, '' uses the default
#temp_tablespaces = ''			# a list of tablespace names, '' uses
					# only default tablespace
#check_function_bodies = on
#default_transaction_isolation = 'read committed'
#default_transaction_read_only = off
#default_transaction_deferrable = off
#session_replication_role = 'origin'
#statement_timeout = 0			# in milliseconds, 0 is disabled
#lock_timeout = 0			# in milliseconds, 0 is disabled
#idle_in_transaction_session_timeout = 0		# in milliseconds, 0 is disabled
#vacuum_freeze_min_age = 50000000
#vacuum_freeze_table_age = 150000000
#vacuum_multixact_freeze_min_age = 5000000
#vacuum_multixact_freeze_table_age = 150000000
#bytea_output = 'hex'			# hex, escape
#xmlbinary = 'base64'
#xmloption = 'content'
#gin_fuzzy_search_limit = 0
#gin_pending_list_limit = 4MB

# - Locale and Formatting -

# These settings are initialized by initdb, but they can be changed.
lc_messages = 'C.UTF-8'			# locale for system error message
					# strings
lc_monetary = 'C.UTF-8'			# locale for monetary formatting
lc_numeric = 'C.UTF-8'			# locale for number formatting
lc_time = 'C.UTF-8'				# locale for time formatting

# default configuration for text search
default_text_search_config = 'pg_catalog.english'

# - Other Defaults -

#dynamic_library_path = '$libdir'
#local_preload_libraries = ''
#session_preload_libraries = ''

#------------------------------------------------------------------------------
# LOCK MANAGEMENT
#------------------------------------------------------------------------------

#deadlock_timeout = 1s
#max_locks_per_transaction = 64		# min 10
					# (change requires restart)
#max_pred_locks_per_transaction = 64	# min 10
					# (change requires restart)

#------------------------------------------------------------------------------
# VERSION/PLATFORM COMPATIBILITY
#------------------------------------------------------------------------------

# - Previous PostgreSQL Versions -

#array_nulls = on
#backslash_quote = safe_encoding	# on, off, or safe_encoding
#default_with_oids = off
#escape_string_warning = on
#lo_compat_privileges = off
#operator_precedence_warning = off
#quote_all_identifiers = off
#sql_inheritance = on
#standard_conforming_strings = on
#synchronize_seqscans = on

# - Other Platforms and Clients -

#transform_null_equals = off

#------------------------------------------------------------------------------
# ERROR HANDLING
#------------------------------------------------------------------------------

#exit_on_error = off			# terminate session on any error?
#restart_after_crash = on		# reinitialize after backend crash?
#data_sync_retry = off			# retry or panic on failure to fsync data?

#------------------------------------------------------------------------------
# CONFIG FILE INCLUDES
#------------------------------------------------------------------------------

# These options allow settings to be loaded from files other than the
# default postgresql.conf.

include_dir = 'conf.d'			# include files ending in '.conf' from
					# directory 'conf.d'
#include_if_exists = 'exists.conf'	# include file only if it exists
#include = 'special.conf'		# include file

#------------------------------------------------------------------------------
# CUSTOMIZED OPTIONS
#------------------------------------------------------------------------------

# Add settings for extensions here
client_encoding = utf8