| blob | a874b4541dbe004858dc84ab0d601c299761ddd9 |
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 MB = megabytes GB = gigabytes
28 # Time units: ms = milliseconds s = seconds min = minutes h = hours d = days
31 #------------------------------------------------------------------------------
32 # FILE LOCATIONS
33 #------------------------------------------------------------------------------
35 # The default values of these variables are driven from the -D command-line
36 # option or PGDATA environment variable, represented here as ConfigDir.
38 #data_directory = 'ConfigDir' # use data in another directory
39 # (change requires restart)
40 #hba_file = 'ConfigDir/pg_hba.conf' # host-based authentication file
41 # (change requires restart)
42 #ident_file = 'ConfigDir/pg_ident.conf' # ident configuration file
43 # (change requires restart)
45 # If external_pid_file is not explicitly set, no extra PID file is written.
46 #external_pid_file = '(none)' # write an extra PID file
47 # (change requires restart)
50 #------------------------------------------------------------------------------
51 # CONNECTIONS AND AUTHENTICATION
52 #------------------------------------------------------------------------------
54 # - Connection Settings -
56 #listen_addresses = 'localhost' # what IP address(es) to listen on;
57 # comma-separated list of addresses;
58 # defaults to 'localhost', '*' = all
59 # (change requires restart)
60 #port = 5432 # (change requires restart)
61 #max_connections = 100 # (change requires restart)
62 # Note: Increasing max_connections costs ~400 bytes of shared memory per
63 # connection slot, plus lock space (see max_locks_per_transaction).
64 #superuser_reserved_connections = 3 # (change requires restart)
65 #unix_socket_directory = '' # (change requires restart)
66 #unix_socket_group = '' # (change requires restart)
67 #unix_socket_permissions = 0777 # begin with 0 to use octal notation
68 # (change requires restart)
69 #bonjour_name = '' # defaults to the computer name
70 # (change requires restart)
72 # - Security and Authentication -
74 #authentication_timeout = 1min # 1s-600s
75 #ssl = off # (change requires restart)
76 #ssl_ciphers = 'ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH' # allowed SSL ciphers
77 # (change requires restart)
78 #password_encryption = on
79 #db_user_namespace = off
81 # Kerberos and GSSAPI
82 #krb_server_keyfile = ''
83 #krb_srvname = 'postgres' # (Kerberos only)
84 #krb_caseins_users = off
86 # - TCP Keepalives -
87 # see "man 7 tcp" for details
89 #tcp_keepalives_idle = 0 # TCP_KEEPIDLE, in seconds;
90 # 0 selects the system default
91 #tcp_keepalives_interval = 0 # TCP_KEEPINTVL, in seconds;
92 # 0 selects the system default
93 #tcp_keepalives_count = 0 # TCP_KEEPCNT;
94 # 0 selects the system default
97 #------------------------------------------------------------------------------
98 # RESOURCE USAGE (except WAL)
99 #------------------------------------------------------------------------------
101 # - Memory -
103 #shared_buffers = 32MB # min 128kB
104 # (change requires restart)
105 #temp_buffers = 8MB # min 800kB
106 #max_prepared_transactions = 5 # can be 0 or more
107 # (change requires restart)
108 # Note: Increasing max_prepared_transactions costs ~600 bytes of shared memory
109 # per transaction slot, plus lock space (see max_locks_per_transaction).
110 #work_mem = 1MB # min 64kB
111 #maintenance_work_mem = 16MB # min 1MB
112 #max_stack_depth = 2MB # min 100kB
114 # - Kernel Resource Usage -
116 #max_files_per_process = 1000 # min 25
117 # (change requires restart)
118 #shared_preload_libraries = '' # (change requires restart)
120 # - Cost-Based Vacuum Delay -
122 #vacuum_cost_delay = 0 # 0-1000 milliseconds
123 #vacuum_cost_page_hit = 1 # 0-10000 credits
124 #vacuum_cost_page_miss = 10 # 0-10000 credits
125 #vacuum_cost_page_dirty = 20 # 0-10000 credits
126 #vacuum_cost_limit = 200 # 1-10000 credits
128 # - 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 multipler on buffers scanned/round
134 # - Asynchronous Behavior -
136 #effective_io_concurrency = 1 # 1-1000, or 0 to disable prefetching
139 #------------------------------------------------------------------------------
140 # WRITE AHEAD LOG
141 #------------------------------------------------------------------------------
143 # - Settings -
145 #fsync = on # turns forced synchronization on or off
146 #synchronous_commit = on # immediate fsync at commit
147 #wal_sync_method = fsync # the default is the first option
148 # supported by the operating system:
149 # open_datasync
150 # fdatasync
151 # fsync
152 # fsync_writethrough
153 # open_sync
154 #full_page_writes = on # recover from partial page writes
155 #wal_buffers = 64kB # min 32kB
156 # (change requires restart)
157 #wal_writer_delay = 200ms # 1-10000 milliseconds
159 #commit_delay = 0 # range 0-100000, in microseconds
160 #commit_siblings = 5 # range 1-1000
162 # - Checkpoints -
164 #checkpoint_segments = 3 # in logfile segments, min 1, 16MB each
165 #checkpoint_timeout = 5min # range 30s-1h
166 #checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0
167 #checkpoint_warning = 30s # 0 is off
169 # - Archiving -
171 #archive_mode = off # allows archiving to be done
172 # (change requires restart)
173 #archive_command = '' # command to use to archive a logfile segment
174 #archive_timeout = 0 # force a logfile segment switch after this
175 # time; 0 is off
178 #------------------------------------------------------------------------------
179 # QUERY TUNING
180 #------------------------------------------------------------------------------
182 # - Planner Method Configuration -
184 #enable_bitmapscan = on
185 #enable_hashagg = on
186 #enable_hashjoin = on
187 #enable_indexscan = on
188 #enable_mergejoin = on
189 #enable_nestloop = on
190 #enable_seqscan = on
191 #enable_sort = on
192 #enable_tidscan = on
194 # - Planner Cost Constants -
196 #seq_page_cost = 1.0 # measured on an arbitrary scale
197 #random_page_cost = 4.0 # same scale as above
198 #cpu_tuple_cost = 0.01 # same scale as above
199 #cpu_index_tuple_cost = 0.005 # same scale as above
200 #cpu_operator_cost = 0.0025 # same scale as above
201 #effective_cache_size = 128MB
203 # - Genetic Query Optimizer -
205 #geqo = on
206 #geqo_threshold = 12
207 #geqo_effort = 5 # range 1-10
208 #geqo_pool_size = 0 # selects default based on effort
209 #geqo_generations = 0 # selects default based on effort
210 #geqo_selection_bias = 2.0 # range 1.5-2.0
212 # - Other Planner Options -
214 #default_statistics_target = 100 # range 1-10000
215 #constraint_exclusion = partition # on, off, or partition
216 #cursor_tuple_fraction = 0.1 # range 0.0-1.0
217 #from_collapse_limit = 8
218 #join_collapse_limit = 8 # 1 disables collapsing of explicit
219 # JOIN clauses
222 #------------------------------------------------------------------------------
223 # ERROR REPORTING AND LOGGING
224 #------------------------------------------------------------------------------
226 # - Where to Log -
228 #log_destination = 'stderr' # Valid values are combinations of
229 # stderr, csvlog, syslog and eventlog,
230 # depending on platform. csvlog
231 # requires logging_collector to be on.
233 # This is used when logging to stderr:
234 #logging_collector = off # Enable capturing of stderr and csvlog
235 # into log files. Required to be on for
236 # csvlogs.
237 # (change requires restart)
239 # These are only used if logging_collector is on:
240 #log_directory = 'pg_log' # directory where log files are written,
241 # can be absolute or relative to PGDATA
242 #log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log' # log file name pattern,
243 # can include strftime() escapes
244 #log_truncate_on_rotation = off # If on, an existing log file of the
245 # same name as the new log file will be
246 # truncated rather than appended to.
247 # But such truncation only occurs on
248 # time-driven rotation, not on restarts
249 # or size-driven rotation. Default is
250 # off, meaning append to existing files
251 # in all cases.
252 #log_rotation_age = 1d # Automatic rotation of logfiles will
253 # happen after that time. 0 to disable.
254 #log_rotation_size = 10MB # Automatic rotation of logfiles will
255 # happen after that much log output.
256 # 0 to disable.
258 # These are relevant when logging to syslog:
259 #syslog_facility = 'LOCAL0'
260 #syslog_ident = 'postgres'
263 # - When to Log -
265 #client_min_messages = notice # values in order of decreasing detail:
266 # debug5
267 # debug4
268 # debug3
269 # debug2
270 # debug1
271 # log
272 # notice
273 # warning
274 # error
276 #log_min_messages = warning # values in order of decreasing detail:
277 # debug5
278 # debug4
279 # debug3
280 # debug2
281 # debug1
282 # info
283 # notice
284 # warning
285 # error
286 # log
287 # fatal
288 # panic
290 #log_error_verbosity = default # terse, default, or verbose messages
292 #log_min_error_statement = error # values in order of decreasing detail:
293 # debug5
294 # debug4
295 # debug3
296 # debug2
297 # debug1
298 # info
299 # notice
300 # warning
301 # error
302 # log
303 # fatal
304 # panic (effectively off)
306 #log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements
307 # and their durations, > 0 logs only
308 # statements running at least this time.
310 #silent_mode = off # DO NOT USE without syslog or
311 # logging_collector
312 # (change requires restart)
314 # - What to Log -
316 #debug_print_parse = off
317 #debug_print_rewritten = off
318 #debug_print_plan = off
319 #debug_pretty_print = on
320 #log_checkpoints = off
321 #log_connections = off
322 #log_disconnections = off
323 #log_duration = off
324 #log_hostname = off
325 #log_line_prefix = '' # special values:
326 # %u = user name
327 # %d = database name
328 # %r = remote host and port
329 # %h = remote host
330 # %p = process ID
331 # %t = timestamp without milliseconds
332 # %m = timestamp with milliseconds
333 # %i = command tag
334 # %c = session ID
335 # %l = session line number
336 # %s = session start timestamp
337 # %v = virtual transaction ID
338 # %x = transaction ID (0 if none)
339 # %q = stop here in non-session
340 # processes
341 # %% = '%'
342 # e.g. '<%u%%%d> '
343 #log_lock_waits = off # log lock waits >= deadlock_timeout
344 #log_statement = 'none' # none, ddl, mod, all
345 #log_temp_files = -1 # log temporary files equal or larger
346 # than specified size;
347 # -1 disables, 0 logs all temp files
348 #log_timezone = unknown # actually, defaults to TZ environment
349 # setting
352 #------------------------------------------------------------------------------
353 # RUNTIME STATISTICS
354 #------------------------------------------------------------------------------
356 # - Query/Index Statistics Collector -
358 #track_activities = on
359 #track_counts = on
360 #track_functions = none # none, pl, all
361 #track_activity_query_size = 1024
362 #update_process_title = on
363 #stats_temp_directory = 'pg_stat_tmp'
366 # - Statistics Monitoring -
368 #log_parser_stats = off
369 #log_planner_stats = off
370 #log_executor_stats = off
371 #log_statement_stats = off
374 #------------------------------------------------------------------------------
375 # AUTOVACUUM PARAMETERS
376 #------------------------------------------------------------------------------
378 #autovacuum = on # Enable autovacuum subprocess? 'on'
379 # requires track_counts to also be on.
380 #log_autovacuum_min_duration = -1 # -1 disables, 0 logs all actions and
381 # their durations, > 0 logs only
382 # actions running at least that time.
383 #autovacuum_max_workers = 3 # max number of autovacuum subprocesses
384 #autovacuum_naptime = 1min # time between autovacuum runs
385 #autovacuum_vacuum_threshold = 50 # min number of row updates before
386 # vacuum
387 #autovacuum_analyze_threshold = 50 # min number of row updates before
388 # analyze
389 #autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum
390 #autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze
391 #autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum
392 # (change requires restart)
393 #autovacuum_vacuum_cost_delay = 20 # default vacuum cost delay for
394 # autovacuum, -1 means use
395 # vacuum_cost_delay
396 #autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for
397 # autovacuum, -1 means use
398 # vacuum_cost_limit
401 #------------------------------------------------------------------------------
402 # CLIENT CONNECTION DEFAULTS
403 #------------------------------------------------------------------------------
405 # - Statement Behavior -
407 #search_path = '"$user",public' # schema names
408 #default_tablespace = '' # a tablespace name, '' uses the default
409 #temp_tablespaces = '' # a list of tablespace names, '' uses
410 # only default tablespace
411 #check_function_bodies = on
412 #default_transaction_isolation = 'read committed'
413 #default_transaction_read_only = off
414 #session_replication_role = 'origin'
415 #statement_timeout = 0 # 0 is disabled
416 #vacuum_freeze_min_age = 50000000
417 #vacuum_freeze_table_age = 150000000
418 #xmlbinary = 'base64'
419 #xmloption = 'content'
421 # - Locale and Formatting -
423 #datestyle = 'iso, mdy'
424 #intervalstyle = 'postgres'
425 #timezone = unknown # actually, defaults to TZ environment
426 # setting
427 #timezone_abbreviations = 'Default' # Select the set of available time zone
428 # abbreviations. Currently, there are
429 # Default
430 # Australia
431 # India
432 # You can create your own file in
433 # share/timezonesets/.
434 #extra_float_digits = 0 # min -15, max 2
435 #client_encoding = sql_ascii # actually, defaults to database
436 # encoding
438 # These settings are initialized by initdb, but they can be changed.
439 #lc_messages = 'C' # locale for system error message
440 # strings
441 #lc_monetary = 'C' # locale for monetary formatting
442 #lc_numeric = 'C' # locale for number formatting
443 #lc_time = 'C' # locale for time formatting
445 # default configuration for text search
446 #default_text_search_config = 'pg_catalog.simple'
448 # - Other Defaults -
450 #dynamic_library_path = '$libdir'
451 #local_preload_libraries = ''
454 #------------------------------------------------------------------------------
455 # LOCK MANAGEMENT
456 #------------------------------------------------------------------------------
458 #deadlock_timeout = 1s
459 #max_locks_per_transaction = 64 # min 10
460 # (change requires restart)
461 # Note: Each lock table slot uses ~270 bytes of shared memory, and there are
462 # max_locks_per_transaction * (max_connections + max_prepared_transactions)
463 # lock table slots.
466 #------------------------------------------------------------------------------
467 # VERSION/PLATFORM COMPATIBILITY
468 #------------------------------------------------------------------------------
470 # - Previous PostgreSQL Versions -
472 #add_missing_from = off
473 #array_nulls = on
474 #backslash_quote = safe_encoding # on, off, or safe_encoding
475 #default_with_oids = off
476 #escape_string_warning = on
477 #regex_flavor = advanced # advanced, extended, or basic
478 #sql_inheritance = on
479 #standard_conforming_strings = off
480 #synchronize_seqscans = on
482 # - Other Platforms and Clients -
484 #transform_null_equals = off
487 #------------------------------------------------------------------------------
488 # CUSTOMIZED OPTIONS
489 #------------------------------------------------------------------------------
491 #custom_variable_classes = '' # list of custom variable class names