postgresql standby 配置
首先、配置下inux sysctl.conf
配置 64G
For 64-bit systems with 64GB of RAM:
简单配置如下：
master
postgresql.conf
pg_hba.conf
slave配置
postgresql.conf
recovery.conf配置
一些详细的配置可以参考：
http://francs3.blog.163.com/blog/static/40576727201108864230/
配置 64G
For 64-bit systems with 64GB of RAM:
kernel.shmmax=34359738368 kernel.shmmni=4096 kernel.shmall=16777216 vm.nr_hugepages=16384
sysctl -w kernel.shmall=16777216 sysctl -w kernel.shmmax=34359738368 sysctl -p
简单配置如下：
master
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, 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 # 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 = '(none)' # 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', '*' = all # (change requires restart) #port = 5432 # (change requires restart) max_connections = 100 # (change requires restart) # Note: Increasing max_connections costs ~400 bytes of shared memory per # connection slot, plus lock space (see max_locks_per_transaction). #superuser_reserved_connections = 3 # (change requires restart) #unix_socket_directory = '' # (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 = off # (change requires restart) #ssl_ciphers = 'ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH' # allowed SSL ciphers # (change requires restart) #ssl_renegotiation_limit = 512MB # amount of data between renegotiations #password_encryption = on #db_user_namespace = off # Kerberos and GSSAPI #krb_server_keyfile = '' #krb_srvname = 'postgres' # (Kerberos only) #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 = 1024MB # min 128kB # (change requires restart) #temp_buffers = 8MB # min 800kB #max_prepared_transactions = 0 # zero disables the feature # (change requires restart) # Note: Increasing max_prepared_transactions costs ~600 bytes of shared memory # per transaction slot, plus lock space (see max_locks_per_transaction). # It is not advisable to set max_prepared_transactions nonzero unless you # actively intend to use prepared transactions. #work_mem = 1MB # min 64kB #maintenance_work_mem = 16MB # min 1MB #max_stack_depth = 2MB # min 100kB # - Kernel Resource Usage - #max_files_per_process = 1000 # min 25 # (change requires restart) #shared_preload_libraries = 'pg_stat_statements' # (change requires restart) # - Cost-Based Vacuum Delay - #vacuum_cost_delay = 0ms # 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 multipler on buffers scanned/round # - Asynchronous Behavior - #effective_io_concurrency = 1 # 1-1000. 0 disables prefetching #------------------------------------------------------------------------------ # WRITE AHEAD LOG #------------------------------------------------------------------------------ # - Settings - wal_level = hot_standby # minimal, archive, or hot_standby # (change requires restart) #fsync = on # turns forced synchronization on or off #synchronous_commit = on # synchronization level; on, off, or local #wal_sync_method = fsync # the default is the first option # supported by the operating system: # open_datasync # fdatasync (default on Linux) # fsync # fsync_writethrough # open_sync #full_page_writes = on # recover from partial page writes #wal_buffers = -1 # min 32kB, -1 sets based on shared_buffers # (change requires restart) #wal_writer_delay = 200ms # 1-10000 milliseconds #commit_delay = 0 # range 0-100000, in microseconds #commit_siblings = 5 # range 1-1000 # - Checkpoints - checkpoint_segments = 128 # in logfile segments, min 1, 16MB each #checkpoint_timeout = 5min # range 30s-1h #checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0 #checkpoint_warning = 30s # 0 disables # - Archiving - archive_mode = on # allows archiving to be done # (change requires restart) archive_command = 'cp -i %p /mnt/pgsql/archivedir/%f </dev/null' # command to use to archive a logfile segment archive_timeout = 600 # force a logfile segment switch after this # number of seconds; 0 disables #------------------------------------------------------------------------------ # REPLICATION #------------------------------------------------------------------------------ # - Master Server - # These settings are ignored on a standby server max_wal_senders = 5 # max number of walsender processes # (change requires restart) #wal_sender_delay = 1s # walsender cycle time, 1-10000 milliseconds wal_keep_segments = 64 # in logfile segments, 16MB each; 0 disables #vacuum_defer_cleanup_age = 0 # number of xacts by which cleanup is delayed #replication_timeout = 60s # in milliseconds; 0 disables #synchronous_standby_names = '' # standby servers that provide sync rep # comma-separated list of application_name # from standby(s); '*' = all # - Standby Servers - # These settings are ignored on a master server #hot_standby = on # "on" allows queries during recovery # (change requires restart) #max_standby_archive_delay = 30s # max delay before canceling queries # when reading WAL from archive; # -1 allows indefinite delay #max_standby_streaming_delay = 30s # max delay before canceling queries # when reading streaming WAL; # -1 allows indefinite delay #wal_receiver_status_interval = 10s # send replies at least this often # 0 disables #hot_standby_feedback = off # send info from standby to prevent # query conflicts #------------------------------------------------------------------------------ # QUERY TUNING #------------------------------------------------------------------------------ # - Planner Method Configuration - #enable_bitmapscan = on #enable_hashagg = on #enable_hashjoin = on #enable_indexscan = 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 = 2.0 # 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 #effective_cache_size = 128MB # - 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 #------------------------------------------------------------------------------ # 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 = 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 = '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' #silent_mode = off # Run server silently. # DO NOT USE without syslog or # logging_collector # (change requires restart) # - When to Log - #client_min_messages = debug5 # values in order of decreasing detail: # debug5 # debug4 # debug3 # debug2 # debug1 # log # notice # warning # error log_min_messages = debug5 # 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 = on log_connections = on log_disconnections = on #log_duration = off #log_error_verbosity = default # terse, default, or verbose messages #log_hostname = off #log_line_prefix = '' # 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 # %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_temp_files = -1 # log temporary files equal or larger # than the specified size in kilobytes; # -1 disables, 0 logs all temp files #log_timezone = '(defaults to server environment setting)' #------------------------------------------------------------------------------ # RUNTIME STATISTICS #------------------------------------------------------------------------------ # - Query/Index Statistics Collector - #track_activities = on #track_counts = on #track_functions = none # none, pl, all track_activity_query_size = 2048 # (change requires restart) #update_process_title = on #stats_temp_directory = '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_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 - #search_path = '"$user",public' # schema names #default_tablespace = '' # a tablespace name, '' uses the default #temp_tablespaces = '' # a list of tablespace names, '' uses # only default tablespace #check_function_bodies = on #default_transaction_isolation = 'read committed' #default_transaction_read_only = off #default_transaction_deferrable = off #session_replication_role = 'origin' #statement_timeout = 0 # in milliseconds, 0 is disabled #vacuum_freeze_min_age = 50000000 #vacuum_freeze_table_age = 150000000 #bytea_output = 'hex' # hex, escape #xmlbinary = 'base64' #xmloption = 'content' # - Locale and Formatting - datestyle = 'iso, mdy' #intervalstyle = 'postgres' #timezone = '(defaults to server environment setting)' timezone = 'PRC' timezone_abbreviations = 'Default' # Select the set of available time zone # abbreviations. Currently, there are # Default # Australia # India # You can create your own file in # share/timezonesets/. #extra_float_digits = 0 # min -15, max 3 #client_encoding = sql_ascii # actually, defaults to database # encoding # These settings are initialized by initdb, but they can be changed. lc_messages = 'en_HK.UTF-8' # locale for system error message # strings lc_monetary = 'en_HK.UTF-8' # locale for monetary formatting lc_numeric = 'en_HK.UTF-8' # locale for number formatting lc_time = 'en_HK.UTF-8' # locale for time formatting # default configuration for text search default_text_search_config = 'pg_catalog.english' # - Other Defaults - #dynamic_library_path = '$libdir' #local_preload_libraries = '' #------------------------------------------------------------------------------ # LOCK MANAGEMENT #------------------------------------------------------------------------------ #deadlock_timeout = 1s #max_locks_per_transaction = 64 # min 10 # (change requires restart) # Note: Each lock table slot uses ~270 bytes of shared memory, and there are # max_locks_per_transaction * (max_connections + max_prepared_transactions) # lock table slots. #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 #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? #------------------------------------------------------------------------------ # CUSTOMIZED OPTIONS #------------------------------------------------------------------------------ #custom_variable_classes = 'pg_stat_statements' # list of custom variable class names #pg_stat_statements.max=1000 #pg_stat_statements.track=all
pg_hba.conf
# PostgreSQL Client Authentication Configuration File # =================================================== # # Refer to the "Client Authentication" section in the PostgreSQL # documentation for a complete description of this file. A short # synopsis follows. # # This file controls: which hosts are allowed to connect, how clients # are authenticated, which PostgreSQL user names they can use, which # databases they can access. Records take one of these forms: # # local DATABASE USER METHOD [OPTIONS] # host DATABASE USER ADDRESS METHOD [OPTIONS] # hostssl DATABASE USER ADDRESS METHOD [OPTIONS] # hostnossl DATABASE USER ADDRESS METHOD [OPTIONS] # # (The uppercase items must be replaced by actual values.) # # The first field is the connection type: "local" is a Unix-domain # socket, "host" is either a plain or SSL-encrypted TCP/IP socket, # "hostssl" is an SSL-encrypted TCP/IP socket, and "hostnossl" is a # plain TCP/IP socket. # # DATABASE can be "all", "sameuser", "samerole", "replication", a # database name, or a comma-separated list thereof. The "all" # keyword does not match "replication". Access to replication # must be enabled in a separate record (see example below). # # USER can be "all", a user name, a group name prefixed with "+", or a # comma-separated list thereof. In both the DATABASE and USER fields # you can also write a file name prefixed with "@" to include names # from a separate file. # # ADDRESS specifies the set of hosts the record matches. It can be a # host name, or it is made up of an IP address and a CIDR mask that is # an integer (between 0 and 32 (IPv4) or 128 (IPv6) inclusive) that # specifies the number of significant bits in the mask. A host name # that starts with a dot (.) matches a suffix of the actual host name. # Alternatively, you can write an IP address and netmask in separate # columns to specify the set of hosts. Instead of a CIDR-address, you # can write "samehost" to match any of the server's own IP addresses, # or "samenet" to match any address in any subnet that the server is # directly connected to. # # METHOD can be "trust", "reject", "md5", "password", "gss", "sspi", # "krb5", "ident", "peer", "pam", "ldap", "radius" or "cert". Note that # "password" sends passwords in clear text; "md5" is preferred since # it sends encrypted passwords. # # OPTIONS are a set of options for the authentication in the format # NAME=VALUE. The available options depend on the different # authentication methods -- refer to the "Client Authentication" # section in the documentation for a list of which options are # available for which authentication methods. # # Database and user names containing spaces, commas, quotes and other # special characters must be quoted. Quoting one of the keywords # "all", "sameuser", "samerole" or "replication" makes the name lose # its special character, and just match a database or username with # that name. # # This file is read on server startup and when the postmaster receives # a SIGHUP signal. If you edit the file on a running system, you have # to SIGHUP the postmaster for the changes to take effect. You can # use "pg_ctl reload" to do that. # Put your actual configuration here # ---------------------------------- # # If you want to allow non-local connections, you need to add more # "host" records. In that case you will also need to make PostgreSQL # listen on a non-local interface via the listen_addresses # configuration parameter, or via the -i or -h command line switches. # CAUTION: Configuring the system for local "trust" authentication # allows any local user to connect as any PostgreSQL user, including # the database superuser. If you do not trust all your local users, # use another authentication method. # TYPE DATABASE USER ADDRESS METHOD # "local" is for Unix domain socket connections only local all all trust # IPv4 local connections: host all all 127.0.0.1/32 trust # IPv6 local connections: host all all ::1/128 trust # Allow replication connections from localhost, by a user with the # replication privilege. host replication user slaveip/16 md5 #local replication postgres trust #host replication postgres 127.0.0.1/32 trust #host replication postgres ::1/128 trust
slave配置
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, 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 # 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 = '(none)' # 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', '*' = all # (change requires restart) #port = 5432 # (change requires restart) max_connections = 100 # (change requires restart) # Note: Increasing max_connections costs ~400 bytes of shared memory per # connection slot, plus lock space (see max_locks_per_transaction). #superuser_reserved_connections = 3 # (change requires restart) #unix_socket_directory = '' # (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 = off # (change requires restart) #ssl_ciphers = 'ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH' # allowed SSL ciphers # (change requires restart) #ssl_renegotiation_limit = 512MB # amount of data between renegotiations #password_encryption = on #db_user_namespace = off # Kerberos and GSSAPI #krb_server_keyfile = '' #krb_srvname = 'postgres' # (Kerberos only) #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 = 1024MB # min 128kB # (change requires restart) #temp_buffers = 8MB # min 800kB #max_prepared_transactions = 0 # zero disables the feature # (change requires restart) # Note: Increasing max_prepared_transactions costs ~600 bytes of shared memory # per transaction slot, plus lock space (see max_locks_per_transaction). # It is not advisable to set max_prepared_transactions nonzero unless you # actively intend to use prepared transactions. #work_mem = 1MB # min 64kB #maintenance_work_mem = 16MB # min 1MB #max_stack_depth = 2MB # min 100kB # - Kernel Resource Usage - #max_files_per_process = 1000 # min 25 # (change requires restart) #shared_preload_libraries = 'pg_stat_statements' # (change requires restart) # - Cost-Based Vacuum Delay - #vacuum_cost_delay = 0ms # 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 multipler on buffers scanned/round # - Asynchronous Behavior - #effective_io_concurrency = 1 # 1-1000. 0 disables prefetching #------------------------------------------------------------------------------ # WRITE AHEAD LOG #------------------------------------------------------------------------------ # - Settings - wal_level = hot_standby # minimal, archive, or hot_standby # (change requires restart) #fsync = on # turns forced synchronization on or off #synchronous_commit = on # synchronization level; on, off, or local #wal_sync_method = fsync # the default is the first option # supported by the operating system: # open_datasync # fdatasync (default on Linux) # fsync # fsync_writethrough # open_sync #full_page_writes = on # recover from partial page writes #wal_buffers = -1 # min 32kB, -1 sets based on shared_buffers # (change requires restart) #wal_writer_delay = 200ms # 1-10000 milliseconds #commit_delay = 0 # range 0-100000, in microseconds #commit_siblings = 5 # range 1-1000 # - Checkpoints - checkpoint_segments = 128 # in logfile segments, min 1, 16MB each #checkpoint_timeout = 5min # range 30s-1h #checkpoint_completion_target = 0.5 # checkpoint target duration, 0.0 - 1.0 #checkpoint_warning = 30s # 0 disables # - Archiving - #archive_mode = on # allows archiving to be done # (change requires restart) #archive_command = 'cp -i %p /mnt/pgsql/archivedir/%f </dev/null' # command to use to archive a logfile segment #archive_timeout = 600 # force a logfile segment switch after this # number of seconds; 0 disables #------------------------------------------------------------------------------ # REPLICATION #------------------------------------------------------------------------------ # - Master Server - # These settings are ignored on a standby server #max_wal_senders = 5 # max number of walsender processes # (change requires restart) #wal_sender_delay = 1s # walsender cycle time, 1-10000 milliseconds #wal_keep_segments = 64 # in logfile segments, 16MB each; 0 disables #vacuum_defer_cleanup_age = 0 # number of xacts by which cleanup is delayed #replication_timeout = 60s # in milliseconds; 0 disables #synchronous_standby_names = '' # standby servers that provide sync rep # comma-separated list of application_name # from standby(s); '*' = all # - Standby Servers - # These settings are ignored on a master server hot_standby = on # "on" allows queries during recovery # (change requires restart) #max_standby_archive_delay = 30s # max delay before canceling queries # when reading WAL from archive; # -1 allows indefinite delay #max_standby_streaming_delay = 30s # max delay before canceling queries # when reading streaming WAL; # -1 allows indefinite delay #wal_receiver_status_interval = 10s # send replies at least this often # 0 disables #hot_standby_feedback = off # send info from standby to prevent # query conflicts #------------------------------------------------------------------------------ # QUERY TUNING #------------------------------------------------------------------------------ # - Planner Method Configuration - #enable_bitmapscan = on #enable_hashagg = on #enable_hashjoin = on #enable_indexscan = 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 = 2.0 # 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 #effective_cache_size = 128MB # - 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 #------------------------------------------------------------------------------ # 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 logging_collector = on # 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' #silent_mode = off # Run server silently. # DO NOT USE without syslog or # logging_collector # (change requires restart) # - When to Log - #client_min_messages = notice # values in order of decreasing detail: # debug5 # debug4 # debug3 # debug2 # debug1 # log # notice # warning # error log_min_messages = debug5 # 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 = on debug_print_rewritten = on debug_print_plan = on debug_pretty_print = on log_checkpoints = on log_connections = on log_disconnections = on #log_duration = off #log_error_verbosity = default # terse, default, or verbose messages #log_hostname = off #log_line_prefix = '' # 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 # %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_temp_files = -1 # log temporary files equal or larger # than the specified size in kilobytes; # -1 disables, 0 logs all temp files #log_timezone = '(defaults to server environment setting)' #------------------------------------------------------------------------------ # RUNTIME STATISTICS #------------------------------------------------------------------------------ # - Query/Index Statistics Collector - #track_activities = on #track_counts = on #track_functions = none # none, pl, all track_activity_query_size = 2048 # (change requires restart) #update_process_title = on #stats_temp_directory = '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_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 - #search_path = '"$user",public' # schema names #default_tablespace = '' # a tablespace name, '' uses the default #temp_tablespaces = '' # a list of tablespace names, '' uses # only default tablespace #check_function_bodies = on #default_transaction_isolation = 'read committed' #default_transaction_read_only = off #default_transaction_deferrable = off #session_replication_role = 'origin' #statement_timeout = 0 # in milliseconds, 0 is disabled #vacuum_freeze_min_age = 50000000 #vacuum_freeze_table_age = 150000000 #bytea_output = 'hex' # hex, escape #xmlbinary = 'base64' #xmloption = 'content' # - Locale and Formatting - datestyle = 'iso, mdy' #intervalstyle = 'postgres' #timezone = '(defaults to server environment setting)' timezone = 'PRC' timezone_abbreviations = 'Default' # Select the set of available time zone # abbreviations. Currently, there are # Default # Australia # India # You can create your own file in # share/timezonesets/. #extra_float_digits = 0 # min -15, max 3 #client_encoding = sql_ascii # actually, defaults to database # encoding # These settings are initialized by initdb, but they can be changed. lc_messages = 'en_HK.UTF-8' # locale for system error message # strings lc_monetary = 'en_HK.UTF-8' # locale for monetary formatting lc_numeric = 'en_HK.UTF-8' # locale for number formatting lc_time = 'en_HK.UTF-8' # locale for time formatting # default configuration for text search default_text_search_config = 'pg_catalog.english' # - Other Defaults - #dynamic_library_path = '$libdir' #local_preload_libraries = '' #------------------------------------------------------------------------------ # LOCK MANAGEMENT #------------------------------------------------------------------------------ #deadlock_timeout = 1s #max_locks_per_transaction = 64 # min 10 # (change requires restart) # Note: Each lock table slot uses ~270 bytes of shared memory, and there are # max_locks_per_transaction * (max_connections + max_prepared_transactions) # lock table slots. #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 #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? #------------------------------------------------------------------------------ # CUSTOMIZED OPTIONS #------------------------------------------------------------------------------ #custom_variable_classes = 'pg_stat_statements' # list of custom variable class names #pg_stat_statements.max=1000 #pg_stat_statements.track=all
recovery.conf配置
# ------------------------------- # PostgreSQL recovery config file # ------------------------------- # # Edit this file to provide the parameters that PostgreSQL needs to # perform an archive recovery of a database, or to act as a replication # standby. # # If "recovery.conf" is present in the PostgreSQL data directory, it is # read on postmaster startup. After successful recovery, it is renamed # to "recovery.done" to ensure that we do not accidentally re-enter # archive recovery or standby mode. # # This file consists of lines of the form: # # name = value # # Comments are introduced with '#'. # # The complete list of option names and allowed values can be found # in the PostgreSQL documentation. # #--------------------------------------------------------------------------- # ARCHIVE RECOVERY PARAMETERS #--------------------------------------------------------------------------- # # restore_command # # specifies the shell command that is executed to copy log files # back from archival storage. The command string may contain %f, # which is replaced by the name of the desired log file, and %p, # which is replaced by the absolute path to copy the log file to. # # This parameter is *required* for an archive recovery, but optional # for streaming replication. # # It is important that the command return nonzero exit status on failure. # The command *will* be asked for log files that are not present in the # archive; it must return nonzero when so asked. # # NOTE that the basename of %p will be different from %f; do not # expect them to be interchangeable. # #restore_command = 'cp /mnt/pgsql/archivedir/%f %p' # e.g. 'cp /mnt/server/archivedir/%f %p' # # # archive_cleanup_command # # specifies an optional shell command to execute at every restartpoint. # This can be useful for cleaning up the archive of a standby server. # #archive_cleanup_command = 'pg_archivecleanup /mnt/pgsql/archivedir %r' # # recovery_end_command # # specifies an optional shell command to execute at completion of recovery. # This can be useful for cleaning up after the restore_command. # #recovery_end_command = '' # #--------------------------------------------------------------------------- # RECOVERY TARGET PARAMETERS #--------------------------------------------------------------------------- # # By default, recovery will rollforward to the end of the WAL log. # If you want to stop rollforward at a specific point, you # must set a recovery target. # # You may set a recovery target either by transactionId, by name, # or by timestamp. Recovery may either include or exclude the # transaction(s) with the recovery target value (ie, stop either # just after or just before the given target, respectively). # # #recovery_target_name = '' # e.g. 'daily backup 2011-01-26' # #recovery_target_time = '' # e.g. '2004-07-14 22:39:00 EST' # #recovery_target_xid = '' # #recovery_target_inclusive = true # # # If you want to recover into a timeline other than the "main line" shown in # pg_control, specify the timeline number here, or write 'latest' to get # the latest branch for which there's a history file. # #recovery_target_timeline = 'latest' # # # If pause_at_recovery_target is enabled, recovery will pause when # the recovery target is reached. The pause state will continue until # pg_xlog_replay_resume() is called. This setting has no effect if # hot standby is not enabled, or if no recovery target is set. # #pause_at_recovery_target = true # #--------------------------------------------------------------------------- # STANDBY SERVER PARAMETERS #--------------------------------------------------------------------------- # # standby_mode # # When standby_mode is enabled, the PostgreSQL server will work as a # standby. It will continuously wait for the additional XLOG records, using # restore_command and/or primary_conninfo. # standby_mode = on # # primary_conninfo # # If set, the PostgreSQL server will try to connect to the primary using this # connection string and receive XLOG records continuously. # primary_conninfo = 'host=masterip port=5432 user=user password=passwd' # e.g. 'host=localhost port=5432' # # # By default, a standby server keeps restoring XLOG records from the # primary indefinitely. If you want to stop the standby mode, finish recovery # and open the system in read/write mode, specify path to a trigger file. # The server will poll the trigger file path periodically and start as a # primary server when it's found. # trigger_file = '/mnt/pgsql/trigger_activestb' # #--------------------------------------------------------------------------- # HOT STANDBY PARAMETERS #--------------------------------------------------------------------------- # # Hot Standby related parameters are listed in postgresql.conf # #---------------------------------------------------------------------------
一些详细的配置可以参考：
http://francs3.blog.163.com/blog/static/40576727201108864230/