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postgresql.conf 22KB

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  1. # -----------------------------
  2. # PostgreSQL configuration file
  3. # -----------------------------
  4. #
  5. # This file consists of lines of the form:
  6. #
  7. # name = value
  8. #
  9. # (The "=" is optional.) Whitespace may be used. Comments are introduced with
  10. # "#" anywhere on a line. The complete list of parameter names and allowed
  11. # values can be found in the PostgreSQL documentation.
  12. #
  13. # The commented-out settings shown in this file represent the default values.
  14. # Re-commenting a setting is NOT sufficient to revert it to the default value;
  15. # you need to reload the server.
  16. #
  17. # This file is read on server startup and when the server receives a SIGHUP
  18. # signal. If you edit the file on a running system, you have to SIGHUP the
  19. # server for the changes to take effect, or use "pg_ctl reload". Some
  20. # parameters, which are marked below, require a server shutdown and restart to
  21. # take effect.
  22. #
  23. # Any parameter can also be given as a command-line option to the server, e.g.,
  24. # "postgres -c log_connections=on". Some parameters can be changed at run time
  25. # with the "SET" SQL command.
  26. #
  27. # Memory units: kB = kilobytes Time units: ms = milliseconds
  28. # MB = megabytes s = seconds
  29. # GB = gigabytes min = minutes
  30. # TB = terabytes h = hours
  31. # d = days
  32. #------------------------------------------------------------------------------
  33. # FILE LOCATIONS
  34. #------------------------------------------------------------------------------
  35. # The default values of these variables are driven from the -D command-line
  36. # option or PGDATA environment variable, represented here as ConfigDir.
  37. #data_directory = 'ConfigDir' # use data in another directory
  38. # (change requires restart)
  39. #hba_file = 'ConfigDir/pg_hba.conf' # host-based authentication file
  40. # (change requires restart)
  41. #ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file
  42. # (change requires restart)
  43. # If external_pid_file is not explicitly set, no extra PID file is written.
  44. #external_pid_file = '' # write an extra PID file
  45. # (change requires restart)
  46. #------------------------------------------------------------------------------
  47. # CONNECTIONS AND AUTHENTICATION
  48. #------------------------------------------------------------------------------
  49. # - Connection Settings -
  50. listen_addresses = '*'
  51. # comma-separated list of addresses;
  52. # defaults to 'localhost'; use '*' for all
  53. # (change requires restart)
  54. #port = 5432 # (change requires restart)
  55. max_connections = 100 # (change requires restart)
  56. #superuser_reserved_connections = 3 # (change requires restart)
  57. #unix_socket_directories = '/var/run/postgresql' # comma-separated list of directories
  58. # (change requires restart)
  59. #unix_socket_group = '' # (change requires restart)
  60. #unix_socket_permissions = 0777 # begin with 0 to use octal notation
  61. # (change requires restart)
  62. #bonjour = off # advertise server via Bonjour
  63. # (change requires restart)
  64. #bonjour_name = '' # defaults to the computer name
  65. # (change requires restart)
  66. # - Security and Authentication -
  67. #authentication_timeout = 1min # 1s-600s
  68. #ssl = off # (change requires restart)
  69. #ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers
  70. # (change requires restart)
  71. #ssl_prefer_server_ciphers = on # (change requires restart)
  72. #ssl_ecdh_curve = 'prime256v1' # (change requires restart)
  73. #ssl_cert_file = 'server.crt' # (change requires restart)
  74. #ssl_key_file = 'server.key' # (change requires restart)
  75. #ssl_ca_file = '' # (change requires restart)
  76. #ssl_crl_file = '' # (change requires restart)
  77. #password_encryption = on
  78. #db_user_namespace = off
  79. #row_security = on
  80. # GSSAPI using Kerberos
  81. #krb_server_keyfile = ''
  82. #krb_caseins_users = off
  83. # - TCP Keepalives -
  84. # see "man 7 tcp" for details
  85. #tcp_keepalives_idle = 0 # TCP_KEEPIDLE, in seconds;
  86. # 0 selects the system default
  87. #tcp_keepalives_interval = 0 # TCP_KEEPINTVL, in seconds;
  88. # 0 selects the system default
  89. #tcp_keepalives_count = 0 # TCP_KEEPCNT;
  90. # 0 selects the system default
  91. #------------------------------------------------------------------------------
  92. # RESOURCE USAGE (except WAL)
  93. #------------------------------------------------------------------------------
  94. # - Memory -
  95. shared_buffers = 128MB # min 128kB
  96. # (change requires restart)
  97. #huge_pages = try # on, off, or try
  98. # (change requires restart)
  99. #temp_buffers = 8MB # min 800kB
  100. #max_prepared_transactions = 0 # zero disables the feature
  101. # (change requires restart)
  102. # Caution: it is not advisable to set max_prepared_transactions nonzero unless
  103. # you actively intend to use prepared transactions.
  104. #work_mem = 4MB # min 64kB
  105. #maintenance_work_mem = 64MB # min 1MB
  106. #replacement_sort_tuples = 150000 # limits use of replacement selection sort
  107. #autovacuum_work_mem = -1 # min 1MB, or -1 to use maintenance_work_mem
  108. #max_stack_depth = 2MB # min 100kB
  109. dynamic_shared_memory_type = posix # the default is the first option
  110. # supported by the operating system:
  111. # posix
  112. # sysv
  113. # windows
  114. # mmap
  115. # use none to disable dynamic shared memory
  116. # - Disk -
  117. #temp_file_limit = -1 # limits per-process temp file space
  118. # in kB, or -1 for no limit
  119. # - Kernel Resource Usage -
  120. #max_files_per_process = 1000 # min 25
  121. # (change requires restart)
  122. #shared_preload_libraries = '' # (change requires restart)
  123. # - Cost-Based Vacuum Delay -
  124. #vacuum_cost_delay = 0 # 0-100 milliseconds
  125. #vacuum_cost_page_hit = 1 # 0-10000 credits
  126. #vacuum_cost_page_miss = 10 # 0-10000 credits
  127. #vacuum_cost_page_dirty = 20 # 0-10000 credits
  128. #vacuum_cost_limit = 200 # 1-10000 credits
  129. # - Background Writer -
  130. #bgwriter_delay = 200ms # 10-10000ms between rounds
  131. #bgwriter_lru_maxpages = 100 # 0-1000 max buffers written/round
  132. #bgwriter_lru_multiplier = 2.0 # 0-10.0 multiplier on buffers scanned/round
  133. #bgwriter_flush_after = 0 # 0 disables,
  134. # default is 512kB on linux, 0 otherwise
  135. # - Asynchronous Behavior -
  136. #effective_io_concurrency = 1 # 1-1000; 0 disables prefetching
  137. #max_worker_processes = 8 # (change requires restart)
  138. #max_parallel_workers_per_gather = 0 # taken from max_worker_processes
  139. #old_snapshot_threshold = -1 # 1min-60d; -1 disables; 0 is immediate
  140. # (change requires restart)
  141. #backend_flush_after = 0 # 0 disables, default is 0
  142. #------------------------------------------------------------------------------
  143. # WRITE AHEAD LOG
  144. #------------------------------------------------------------------------------
  145. # - Settings -
  146. wal_level = replica # minimal, replica, or logical
  147. # (change requires restart)
  148. #fsync = on # flush data to disk for crash safety
  149. # (turning this off can cause
  150. # unrecoverable data corruption)
  151. #synchronous_commit = on # synchronization level;
  152. # off, local, remote_write, remote_apply, or on
  153. #wal_sync_method = fsync # the default is the first option
  154. # supported by the operating system:
  155. # open_datasync
  156. # fdatasync (default on Linux)
  157. # fsync
  158. # fsync_writethrough
  159. # open_sync
  160. #full_page_writes = on # recover from partial page writes
  161. #wal_compression = off # enable compression of full-page writes
  162. #wal_log_hints = off # also do full page writes of non-critical updates
  163. # (change requires restart)
  164. #wal_buffers = -1 # min 32kB, -1 sets based on shared_buffers
  165. # (change requires restart)
  166. #wal_writer_delay = 200ms # 1-10000 milliseconds
  167. #wal_writer_flush_after = 1MB # 0 disables
  168. #commit_delay = 0 # range 0-100000, in microseconds
  169. #commit_siblings = 5 # range 1-1000
  170. # - Checkpoints -
  171. #checkpoint_timeout = 5min # range 30s-1d
  172. #max_wal_size = 1GB
  173. #min_wal_size = 80MB
  174. #checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0
  175. #checkpoint_flush_after = 0 # 0 disables,
  176. # default is 256kB on linux, 0 otherwise
  177. #checkpoint_warning = 30s # 0 disables
  178. # - Archiving -
  179. #archive_mode = off # enables archiving; off, on, or always
  180. # (change requires restart)
  181. #archive_command = '' # command to use to archive a logfile segment
  182. # placeholders: %p = path of file to archive
  183. # %f = file name only
  184. # e.g. 'test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f'
  185. #archive_timeout = 0 # force a logfile segment switch after this
  186. # number of seconds; 0 disables
  187. #------------------------------------------------------------------------------
  188. # REPLICATION
  189. #------------------------------------------------------------------------------
  190. # - Sending Server(s) -
  191. # Set these on the master and on any standby that will send replication data.
  192. max_wal_senders = 3 # max number of walsender processes
  193. # (change requires restart)
  194. wal_keep_segments = 8 # in logfile segments, 16MB each; 0 disables
  195. #wal_sender_timeout = 60s # in milliseconds; 0 disables
  196. #max_replication_slots = 0 # max number of replication slots
  197. # (change requires restart)
  198. #track_commit_timestamp = off # collect timestamp of transaction commit
  199. # (change requires restart)
  200. # - Master Server -
  201. # These settings are ignored on a standby server.
  202. #synchronous_standby_names = '' # standby servers that provide sync rep
  203. # number of sync standbys and comma-separated list of application_name
  204. # from standby(s); '*' = all
  205. #vacuum_defer_cleanup_age = 0 # number of xacts by which cleanup is delayed
  206. # - Standby Servers -
  207. # These settings are ignored on a master server.
  208. #hot_standby = off # "on" allows queries during recovery
  209. # (change requires restart)
  210. #max_standby_archive_delay = 30s # max delay before canceling queries
  211. # when reading WAL from archive;
  212. # -1 allows indefinite delay
  213. #max_standby_streaming_delay = 30s # max delay before canceling queries
  214. # when reading streaming WAL;
  215. # -1 allows indefinite delay
  216. #wal_receiver_status_interval = 10s # send replies at least this often
  217. # 0 disables
  218. #hot_standby_feedback = off # send info from standby to prevent
  219. # query conflicts
  220. #wal_receiver_timeout = 60s # time that receiver waits for
  221. # communication from master
  222. # in milliseconds; 0 disables
  223. #wal_retrieve_retry_interval = 5s # time to wait before retrying to
  224. # retrieve WAL after a failed attempt
  225. #------------------------------------------------------------------------------
  226. # QUERY TUNING
  227. #------------------------------------------------------------------------------
  228. # - Planner Method Configuration -
  229. #enable_bitmapscan = on
  230. #enable_hashagg = on
  231. #enable_hashjoin = on
  232. #enable_indexscan = on
  233. #enable_indexonlyscan = on
  234. #enable_material = on
  235. #enable_mergejoin = on
  236. #enable_nestloop = on
  237. #enable_seqscan = on
  238. #enable_sort = on
  239. #enable_tidscan = on
  240. # - Planner Cost Constants -
  241. #seq_page_cost = 1.0 # measured on an arbitrary scale
  242. #random_page_cost = 4.0 # same scale as above
  243. #cpu_tuple_cost = 0.01 # same scale as above
  244. #cpu_index_tuple_cost = 0.005 # same scale as above
  245. #cpu_operator_cost = 0.0025 # same scale as above
  246. #parallel_tuple_cost = 0.1 # same scale as above
  247. #parallel_setup_cost = 1000.0 # same scale as above
  248. #min_parallel_relation_size = 8MB
  249. #effective_cache_size = 4GB
  250. # - Genetic Query Optimizer -
  251. #geqo = on
  252. #geqo_threshold = 12
  253. #geqo_effort = 5 # range 1-10
  254. #geqo_pool_size = 0 # selects default based on effort
  255. #geqo_generations = 0 # selects default based on effort
  256. #geqo_selection_bias = 2.0 # range 1.5-2.0
  257. #geqo_seed = 0.0 # range 0.0-1.0
  258. # - Other Planner Options -
  259. #default_statistics_target = 100 # range 1-10000
  260. #constraint_exclusion = partition # on, off, or partition
  261. #cursor_tuple_fraction = 0.1 # range 0.0-1.0
  262. #from_collapse_limit = 8
  263. #join_collapse_limit = 8 # 1 disables collapsing of explicit
  264. # JOIN clauses
  265. #force_parallel_mode = off
  266. #------------------------------------------------------------------------------
  267. # ERROR REPORTING AND LOGGING
  268. #------------------------------------------------------------------------------
  269. # - Where to Log -
  270. #log_destination = 'stderr' # Valid values are combinations of
  271. # stderr, csvlog, syslog, and eventlog,
  272. # depending on platform. csvlog
  273. # requires logging_collector to be on.
  274. # This is used when logging to stderr:
  275. #logging_collector = off # Enable capturing of stderr and csvlog
  276. # into log files. Required to be on for
  277. # csvlogs.
  278. # (change requires restart)
  279. # These are only used if logging_collector is on:
  280. #log_directory = 'pg_log' # directory where log files are written,
  281. # can be absolute or relative to PGDATA
  282. #log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # log file name pattern,
  283. # can include strftime() escapes
  284. #log_file_mode = 0600 # creation mode for log files,
  285. # begin with 0 to use octal notation
  286. #log_truncate_on_rotation = off # If on, an existing log file with the
  287. # same name as the new log file will be
  288. # truncated rather than appended to.
  289. # But such truncation only occurs on
  290. # time-driven rotation, not on restarts
  291. # or size-driven rotation. Default is
  292. # off, meaning append to existing files
  293. # in all cases.
  294. #log_rotation_age = 1d # Automatic rotation of logfiles will
  295. # happen after that time. 0 disables.
  296. #log_rotation_size = 10MB # Automatic rotation of logfiles will
  297. # happen after that much log output.
  298. # 0 disables.
  299. # These are relevant when logging to syslog:
  300. #syslog_facility = 'LOCAL0'
  301. #syslog_ident = 'postgres'
  302. #syslog_sequence_numbers = on
  303. #syslog_split_messages = on
  304. # This is only relevant when logging to eventlog (win32):
  305. #event_source = 'PostgreSQL'
  306. # - When to Log -
  307. #client_min_messages = notice # values in order of decreasing detail:
  308. # debug5
  309. # debug4
  310. # debug3
  311. # debug2
  312. # debug1
  313. # log
  314. # notice
  315. # warning
  316. # error
  317. #log_min_messages = warning # values in order of decreasing detail:
  318. # debug5
  319. # debug4
  320. # debug3
  321. # debug2
  322. # debug1
  323. # info
  324. # notice
  325. # warning
  326. # error
  327. # log
  328. # fatal
  329. # panic
  330. #log_min_error_statement = error # values in order of decreasing detail:
  331. # debug5
  332. # debug4
  333. # debug3
  334. # debug2
  335. # debug1
  336. # info
  337. # notice
  338. # warning
  339. # error
  340. # log
  341. # fatal
  342. # panic (effectively off)
  343. #log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements
  344. # and their durations, > 0 logs only
  345. # statements running at least this number
  346. # of milliseconds
  347. # - What to Log -
  348. #debug_print_parse = off
  349. #debug_print_rewritten = off
  350. #debug_print_plan = off
  351. #debug_pretty_print = on
  352. #log_checkpoints = off
  353. #log_connections = off
  354. #log_disconnections = off
  355. #log_duration = off
  356. #log_error_verbosity = default # terse, default, or verbose messages
  357. #log_hostname = off
  358. #log_line_prefix = '' # special values:
  359. # %a = application name
  360. # %u = user name
  361. # %d = database name
  362. # %r = remote host and port
  363. # %h = remote host
  364. # %p = process ID
  365. # %t = timestamp without milliseconds
  366. # %m = timestamp with milliseconds
  367. # %n = timestamp with milliseconds (as a Unix epoch)
  368. # %i = command tag
  369. # %e = SQL state
  370. # %c = session ID
  371. # %l = session line number
  372. # %s = session start timestamp
  373. # %v = virtual transaction ID
  374. # %x = transaction ID (0 if none)
  375. # %q = stop here in non-session
  376. # processes
  377. # %% = '%'
  378. # e.g. '<%u%%%d> '
  379. #log_lock_waits = off # log lock waits >= deadlock_timeout
  380. #log_statement = 'none' # none, ddl, mod, all
  381. #log_replication_commands = off
  382. #log_temp_files = -1 # log temporary files equal or larger
  383. # than the specified size in kilobytes;
  384. # -1 disables, 0 logs all temp files
  385. log_timezone = 'UTC'
  386. # - Process Title -
  387. #cluster_name = '' # added to process titles if nonempty
  388. # (change requires restart)
  389. #update_process_title = on
  390. #------------------------------------------------------------------------------
  391. # RUNTIME STATISTICS
  392. #------------------------------------------------------------------------------
  393. # - Query/Index Statistics Collector -
  394. #track_activities = on
  395. #track_counts = on
  396. #track_io_timing = off
  397. #track_functions = none # none, pl, all
  398. #track_activity_query_size = 1024 # (change requires restart)
  399. #stats_temp_directory = 'pg_stat_tmp'
  400. # - Statistics Monitoring -
  401. #log_parser_stats = off
  402. #log_planner_stats = off
  403. #log_executor_stats = off
  404. #log_statement_stats = off
  405. #------------------------------------------------------------------------------
  406. # AUTOVACUUM PARAMETERS
  407. #------------------------------------------------------------------------------
  408. #autovacuum = on # Enable autovacuum subprocess? 'on'
  409. # requires track_counts to also be on.
  410. #log_autovacuum_min_duration = -1 # -1 disables, 0 logs all actions and
  411. # their durations, > 0 logs only
  412. # actions running at least this number
  413. # of milliseconds.
  414. #autovacuum_max_workers = 3 # max number of autovacuum subprocesses
  415. # (change requires restart)
  416. #autovacuum_naptime = 1min # time between autovacuum runs
  417. #autovacuum_vacuum_threshold = 50 # min number of row updates before
  418. # vacuum
  419. #autovacuum_analyze_threshold = 50 # min number of row updates before
  420. # analyze
  421. #autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum
  422. #autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze
  423. #autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum
  424. # (change requires restart)
  425. #autovacuum_multixact_freeze_max_age = 400000000 # maximum multixact age
  426. # before forced vacuum
  427. # (change requires restart)
  428. #autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay for
  429. # autovacuum, in milliseconds;
  430. # -1 means use vacuum_cost_delay
  431. #autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for
  432. # autovacuum, -1 means use
  433. # vacuum_cost_limit
  434. #------------------------------------------------------------------------------
  435. # CLIENT CONNECTION DEFAULTS
  436. #------------------------------------------------------------------------------
  437. # - Statement Behavior -
  438. #search_path = '"$user", public' # schema names
  439. #default_tablespace = '' # a tablespace name, '' uses the default
  440. #temp_tablespaces = '' # a list of tablespace names, '' uses
  441. # only default tablespace
  442. #check_function_bodies = on
  443. #default_transaction_isolation = 'read committed'
  444. #default_transaction_read_only = off
  445. #default_transaction_deferrable = off
  446. #session_replication_role = 'origin'
  447. #statement_timeout = 0 # in milliseconds, 0 is disabled
  448. #lock_timeout = 0 # in milliseconds, 0 is disabled
  449. #idle_in_transaction_session_timeout = 0 # in milliseconds, 0 is disabled
  450. #vacuum_freeze_min_age = 50000000
  451. #vacuum_freeze_table_age = 150000000
  452. #vacuum_multixact_freeze_min_age = 5000000
  453. #vacuum_multixact_freeze_table_age = 150000000
  454. #bytea_output = 'hex' # hex, escape
  455. #xmlbinary = 'base64'
  456. #xmloption = 'content'
  457. #gin_fuzzy_search_limit = 0
  458. #gin_pending_list_limit = 4MB
  459. # - Locale and Formatting -
  460. datestyle = 'iso, mdy'
  461. #intervalstyle = 'postgres'
  462. timezone = 'UTC'
  463. #timezone_abbreviations = 'Default' # Select the set of available time zone
  464. # abbreviations. Currently, there are
  465. # Default
  466. # Australia (historical usage)
  467. # India
  468. # You can create your own file in
  469. # share/timezonesets/.
  470. #extra_float_digits = 0 # min -15, max 3
  471. #client_encoding = sql_ascii # actually, defaults to database
  472. # encoding
  473. # These settings are initialized by initdb, but they can be changed.
  474. lc_messages = 'en_US.utf8' # locale for system error message
  475. # strings
  476. lc_monetary = 'en_US.utf8' # locale for monetary formatting
  477. lc_numeric = 'en_US.utf8' # locale for number formatting
  478. lc_time = 'en_US.utf8' # locale for time formatting
  479. # default configuration for text search
  480. default_text_search_config = 'pg_catalog.english'
  481. # - Other Defaults -
  482. #dynamic_library_path = '$libdir'
  483. #local_preload_libraries = ''
  484. #session_preload_libraries = ''
  485. #------------------------------------------------------------------------------
  486. # LOCK MANAGEMENT
  487. #------------------------------------------------------------------------------
  488. #deadlock_timeout = 1s
  489. #max_locks_per_transaction = 64 # min 10
  490. # (change requires restart)
  491. #max_pred_locks_per_transaction = 64 # min 10
  492. # (change requires restart)
  493. #------------------------------------------------------------------------------
  494. # VERSION/PLATFORM COMPATIBILITY
  495. #------------------------------------------------------------------------------
  496. # - Previous PostgreSQL Versions -
  497. #array_nulls = on
  498. #backslash_quote = safe_encoding # on, off, or safe_encoding
  499. #default_with_oids = off
  500. #escape_string_warning = on
  501. #lo_compat_privileges = off
  502. #operator_precedence_warning = off
  503. #quote_all_identifiers = off
  504. #sql_inheritance = on
  505. #standard_conforming_strings = on
  506. #synchronize_seqscans = on
  507. # - Other Platforms and Clients -
  508. #transform_null_equals = off
  509. #------------------------------------------------------------------------------
  510. # ERROR HANDLING
  511. #------------------------------------------------------------------------------
  512. #exit_on_error = off # terminate session on any error?
  513. #restart_after_crash = on # reinitialize after backend crash?
  514. #------------------------------------------------------------------------------
  515. # CONFIG FILE INCLUDES
  516. #------------------------------------------------------------------------------
  517. # These options allow settings to be loaded from files other than the
  518. # default postgresql.conf.
  519. #include_dir = 'conf.d' # include files ending in '.conf' from
  520. # directory 'conf.d'
  521. #include_if_exists = 'exists.conf' # include file only if it exists
  522. #include = 'special.conf' # include file
  523. #------------------------------------------------------------------------------
  524. # CUSTOMIZED OPTIONS
  525. #------------------------------------------------------------------------------
  526. # Add settings for extensions here