[root@s101 /var/lib/pgsql/13/data]#ls
pg_hba.conf 客户端连接
postgresql.conf 配置文件资源、资源限制、集群复制
pg_hba.conf
# TYPE DATABASE USER ADDRESS METHOD # "local" is for Unix domain socket connections only local all all peer # IPv4 local connections: host all all 127.0.0.1/32 scram-sha-256 host all all 0.0.0.0/0 trust # IPv6 local connections: host all all ::1/128 scram-sha-256 # Allow replication connections from localhost, by a user with the # replication privilege. local replication all peer host replication all 127.0.0.1/32 scram-sha-256 host replication all ::1/128 scram-sha-256
postgresql.conf
[root@s101 /var/lib/pgsql/13/data]#cat postgresql.conf # ----------------------------- # 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, run "pg_ctl reload", or execute # "SELECT pg_reload_conf()". 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 = 'ConfigDir' # use data in another directory # (change requires restart) #hba_file = 'ConfigDir/pg_hba.conf' # host-based authentication file # (change requires restart) #ident_file = 'ConfigDir/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 = '' # write an extra PID file # (change requires restart) #------------------------------------------------------------------------------ # CONNECTIONS AND AUTHENTICATION #------------------------------------------------------------------------------ # - Connection Settings - #listen_addresses = 'localhost' # what IP address(es) to listen on; listen_addresses = '*' # 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, /tmp' # 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) # - TCP settings - # see "man 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 #tcp_user_timeout = 0 # TCP_USER_TIMEOUT, in milliseconds; # 0 selects the system default # - Authentication - #authentication_timeout = 1min # 1s-600s password_encryption = scram-sha-256 # md5 or scram-sha-256 #db_user_namespace = off # GSSAPI using Kerberos #krb_server_keyfile = 'FILE:${sysconfdir}/krb5.keytab' #krb_caseins_users = off # - SSL - #ssl = off #ssl_ca_file = '' #ssl_cert_file = 'server.crt' #ssl_crl_file = '' #ssl_key_file = 'server.key' #ssl_ciphers = 'HIGH:MEDIUM:+3DES:!aNULL' # allowed SSL ciphers #ssl_prefer_server_ciphers = on #ssl_ecdh_curve = 'prime256v1' #ssl_min_protocol_version = 'TLSv1.2' #ssl_max_protocol_version = '' #ssl_dh_params_file = '' #ssl_passphrase_command = '' #ssl_passphrase_command_supports_reload = off #------------------------------------------------------------------------------ # 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 #hash_mem_multiplier = 1.0 # 1-1000.0 multiplier on hash table work_mem #maintenance_work_mem = 64MB # min 1MB #autovacuum_work_mem = -1 # min 1MB, or -1 to use maintenance_work_mem #logical_decoding_work_mem = 64MB # min 64kB #max_stack_depth = 2MB # min 100kB #shared_memory_type = mmap # the default is the first option # supported by the operating system: # mmap # sysv # windows # (change requires restart) dynamic_shared_memory_type = posix # the default is the first option # supported by the operating system: # posix # sysv # windows # mmap # (change requires restart) # - Disk - #temp_file_limit = -1 # limits per-process temp file space # in kilobytes, or -1 for no limit # - Kernel Resources - #max_files_per_process = 1000 # min 64 # (change requires restart) # - Cost-Based Vacuum Delay - #vacuum_cost_delay = 0 # 0-100 milliseconds (0 disables) #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 # max buffers written/round, 0 disables #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 #maintenance_io_concurrency = 10 # 1-1000; 0 disables prefetching #max_worker_processes = 8 # (change requires restart) #max_parallel_maintenance_workers = 2 # taken from max_parallel_workers #max_parallel_workers_per_gather = 2 # taken from max_parallel_workers #parallel_leader_participation = on #max_parallel_workers = 8 # maximum number of max_worker_processes that # can be used in parallel operations #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 = replica # 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 and FreeBSD) # 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_init_zero = on # zero-fill new WAL files #wal_recycle = on # recycle WAL files #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 #wal_skip_threshold = 2MB #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 # - Archive Recovery - # These are only used in recovery mode. #restore_command = '' # command to use to restore an archived logfile segment # placeholders: %p = path of file to restore # %f = file name only # e.g. 'cp /mnt/server/archivedir/%f %p' # (change requires restart) #archive_cleanup_command = '' # command to execute at every restartpoint #recovery_end_command = '' # command to execute at completion of recovery # - Recovery Target - # Set these only when performing a targeted recovery. #recovery_target = '' # 'immediate' to end recovery as soon as a # consistent state is reached # (change requires restart) #recovery_target_name = '' # the named restore point to which recovery will proceed # (change requires restart) #recovery_target_time = '' # the time stamp up to which recovery will proceed # (change requires restart) #recovery_target_xid = '' # the transaction ID up to which recovery will proceed # (change requires restart) #recovery_target_lsn = '' # the WAL LSN up to which recovery will proceed # (change requires restart) #recovery_target_inclusive = on # Specifies whether to stop: # just after the specified recovery target (on) # just before the recovery target (off) # (change requires restart) #recovery_target_timeline = 'latest' # 'current', 'latest', or timeline ID # (change requires restart) #recovery_target_action = 'pause' # 'pause', 'promote', 'shutdown' # (change requires restart) #------------------------------------------------------------------------------ # REPLICATION #------------------------------------------------------------------------------ # - Sending Servers - # Set these on the master and on any standby that will send replication data. #max_wal_senders = 10 # max number of walsender processes # (change requires restart) #wal_keep_size = 0 # in megabytes; 0 disables #max_slot_wal_keep_size = -1 # in megabytes; -1 disables #wal_sender_timeout = 60s # in milliseconds; 0 disables #max_replication_slots = 10 # 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 # method to choose sync standbys, 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. #primary_conninfo = '' # connection string to sending server #primary_slot_name = '' # replication slot on sending server #promote_trigger_file = '' # file name whose presence ends recovery #hot_standby = on # "off" disallows 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_create_temp_slot = off # create temp slot if primary_slot_name # is not set #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 #recovery_min_apply_delay = 0 # minimum delay for applying changes during recovery # - Subscribers - # These settings are ignored on a publisher. #max_logical_replication_workers = 4 # taken from max_worker_processes # (change requires restart) #max_sync_workers_per_subscription = 2 # taken from max_logical_replication_workers #------------------------------------------------------------------------------ # 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_parallel_append = on #enable_seqscan = on #enable_sort = on #enable_incremental_sort = on #enable_tidscan = on #enable_partitionwise_join = off #enable_partitionwise_aggregate = off #enable_parallel_hash = on #enable_partition_pruning = 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 #jit_above_cost = 100000 # perform JIT compilation if available # and query more expensive than this; # -1 disables #jit_inline_above_cost = 500000 # inline small functions if query is # more expensive than this; -1 disables #jit_optimize_above_cost = 500000 # use expensive JIT optimizations if # query is more expensive than this; # -1 disables #min_parallel_table_scan_size = 8MB #min_parallel_index_scan_size = 512kB #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 #jit = on # allow JIT compilation #plan_cache_mode = auto # auto, force_generic_plan or # force_custom_plan #------------------------------------------------------------------------------ # 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 = on # 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 = 'log' # directory where log files are written, # can be absolute or relative to PGDATA log_filename = 'postgresql-%a.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 = on # 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 = 0 # 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 #log_min_duration_sample = -1 # -1 is disabled, 0 logs a sample of statements # and their durations, > 0 logs only a sample of # statements running at least this number # of milliseconds; # sample fraction is determined by log_statement_sample_rate #log_statement_sample_rate = 1.0 # fraction of logged statements exceeding # log_min_duration_sample to be logged; # 1.0 logs all such statements, 0.0 never logs #log_transaction_sample_rate = 0.0 # fraction of transactions whose statements # are logged regardless of their duration; 1.0 logs all # statements from all transactions, 0.0 never logs # - 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] ' # special values: # %a = application name # %u = user name # %d = database name # %r = remote host and port # %h = remote host # %b = backend type # %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_parameter_max_length = -1 # when logging statements, limit logged # bind-parameter values to N bytes; # -1 means print in full, 0 disables #log_parameter_max_length_on_error = 0 # when logging an error, limit logged # bind-parameter values to N bytes; # -1 means print in full, 0 disables #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 = 'Asia/Shanghai' #------------------------------------------------------------------------------ # PROCESS TITLE #------------------------------------------------------------------------------ #cluster_name = '' # added to process titles if nonempty # (change requires restart) #update_process_title = on #------------------------------------------------------------------------------ # STATISTICS #------------------------------------------------------------------------------ # - Query and 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 = 'pg_stat_tmp' # - Monitoring - #log_parser_stats = off #log_planner_stats = off #log_executor_stats = off #log_statement_stats = off #------------------------------------------------------------------------------ # AUTOVACUUM #------------------------------------------------------------------------------ #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_vacuum_insert_threshold = 1000 # min number of row inserts # before vacuum; -1 disables insert # vacuums #autovacuum_analyze_threshold = 50 # min number of row updates before # analyze #autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum #autovacuum_vacuum_insert_scale_factor = 0.2 # fraction of inserts over table # size before insert 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 = 2ms # 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 #row_security = on #default_tablespace = '' # a tablespace name, '' uses the default #temp_tablespaces = '' # a list of tablespace names, '' uses # only default tablespace #default_table_access_method = 'heap' #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 #vacuum_cleanup_index_scale_factor = 0.1 # fraction of total number of tuples # before index cleanup, 0 always performs # index cleanup #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 = 'Asia/Shanghai' #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 = 1 # min -15, max 3; any value >0 actually # selects precise output mode #client_encoding = sql_ascii # actually, defaults to database # encoding # These settings are initialized by initdb, but they can be changed. lc_messages = 'en_US.UTF-8' # locale for system error message # strings lc_monetary = 'en_US.UTF-8' # locale for monetary formatting lc_numeric = 'en_US.UTF-8' # locale for number formatting lc_time = 'en_US.UTF-8' # locale for time formatting # default configuration for text search default_text_search_config = 'pg_catalog.english' # - Shared Library Preloading - #shared_preload_libraries = '' # (change requires restart) #local_preload_libraries = '' #session_preload_libraries = '' #jit_provider = 'llvmjit' # JIT library to use # - Other Defaults - #dynamic_library_path = '$libdir' #------------------------------------------------------------------------------ # 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) #max_pred_locks_per_relation = -2 # negative values mean # (max_pred_locks_per_transaction # / -max_pred_locks_per_relation) - 1 #max_pred_locks_per_page = 2 # min 0 #------------------------------------------------------------------------------ # VERSION AND PLATFORM COMPATIBILITY #------------------------------------------------------------------------------ # - Previous PostgreSQL Versions - #array_nulls = on #backslash_quote = safe_encoding # on, off, or safe_encoding #escape_string_warning = on #lo_compat_privileges = off #operator_precedence_warning = off #quote_all_identifiers = off #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? # (change requires restart) #------------------------------------------------------------------------------ # CONFIG FILE INCLUDES #------------------------------------------------------------------------------ # These options allow settings to be loaded from files other than the # default postgresql.conf. Note that these are directives, not variable # assignments, so they can usefully be given more than once. #include_dir = '...' # include files ending in '.conf' from # a directory, e.g., 'conf.d' #include_if_exists = '...' # include file only if it exists #include = '...' # include file #------------------------------------------------------------------------------ # CUSTOMIZED OPTIONS #------------------------------------------------------------------------------ # Add settings for extensions here
配置文件的日志参数说明
[root@s101 /var/lib/pgsql/13/data/log]#ll
total 16
-rw-------. 1 postgres postgres 0 Jun 25 00:00 postgresql-Fri.log
https://blog.csdn.net/czp11210/article/details/39896985
配置文件的参数说明