[Pacemaker] pgsql + postgresql 9.1

Thomaz Luiz Santos thomaz.santos at gmail.com
Fri Mar 14 02:01:57 UTC 2014


thank you,  Nakahira Kazumoto to response  my e-mail

I updated the ocf-shellfuncs however the automatic failover is not working.
the bases were out of sync and replication stopped working.

How I sync the bases again and test the automatic failover again

*******root at slave:~# tail -f /var/log/postgresql/postgresql-9.1-main.log
2014-03-13 18:01:26 PDT FATAL:  timeline 1 of the primary does not match
recovery target timeline 3
2014-03-13 18:01:30 PDT LOG:  received fast shutdown request
2014-03-13 18:01:30 PDT LOG:  aborting any active transactions
2014-03-13 18:01:30 PDT LOG:  shutting down
2014-03-13 18:01:30 PDT LOG:  database system is shut down



On Thu, Mar 13, 2014 at 2:57 AM, NAKAHIRA Kazutomo <
nakahira_kazutomo_b1 at lab.ntt.co.jp> wrote:

> Hi, Thomaz
>
> If you use latest pgsql RA, then you must use latest
> resource-agents package.
>
>  Mar 12 18:54:49 slave lrmd: [1058]: info: RA output:
>> (res_pgsql_postgresql:0:monitor:stderr)
>> /usr/lib/ocf/resource.d//heartbeat/pgsql: 1749:
>> /usr/lib/ocf/resource.d//heartbeat/pgsql:
>> Mar 12 18:54:49 slave lrmd: [1058]: info: RA output:
>> (res_pgsql_postgresql:0:monitor:stderr) ocf_local_nodename: not found
>>
>
> These masseges means your resource-agents package have no
> ocf_local_nodename function.
>
> ocf_local_nodename was implemented into ocf-shellfuncs
> and pgsql RA at following commits.
>
> https://github.com/ClusterLabs/resource-agents/commit/
> abc1c3f6464f6e5e7a1e41cd7c9b8179896c1903
>
> After this commits, newer pgsql RA can not use with
> older resource-agents package.
>
> Best regards,
>
> (2014/03/13 11:27), Thomaz Luiz Santos wrote:
>
>> hello!
>>
>>
>> I configured the replication stream and trying to setup the pgsql I have
>> that message in my  /var/log/syslog
>>
>>
>> the two server is configured to ssh authorized_keys.
>>
>>
>>
>> ************root at slave:/var/lib/postgresql/9.1/main# tail -f
>> /var/log/syslog ************
>> Mar 12 18:54:20 slave pgsql[3095]: WARNING: Can't get slave xlog location.
>> Mar 12 18:54:49 slave lrmd: [1058]: info: RA output:
>> (res_pgsql_postgresql:0:monitor:stderr)
>> /usr/lib/ocf/resource.d//heartbeat/pgsql: 1749:
>> /usr/lib/ocf/resource.d//heartbeat/pgsql:
>> Mar 12 18:54:49 slave lrmd: [1058]: info: RA output:
>> (res_pgsql_postgresql:0:monitor:stderr) ocf_local_nodename: not found
>> Mar 12 18:54:49 slave lrmd: [1058]: info: RA output:
>> (res_pgsql_postgresql:0:monitor:stderr)
>> Mar 12 18:54:49 slave pgsql[4028]: INFO: Master does not exist.
>> Mar 12 18:54:49 slave pgsql[4028]: INFO: My data status=.
>> Mar 12 18:54:49 slave crm_attribute: [4135]: info: Invoked:
>> /usr/sbin/crm_attribute -l reboot -N -n -v 0000000030000000
>> res_pgsql_postgresql-xlog-loc
>> Mar 12 18:54:49 slave lrmd: [1058]: info: RA output:
>> (res_pgsql_postgresql:0:monitor:stderr) Could not map uname=-n to a UUID:
>> The object/attribute does not exist
>> Mar 12 18:54:49 slave pgsql[4028]: WARNING: Can't get master xlog
>> location.
>> Mar 12 18:54:49 slave pgsql[4028]: WARNING: Can't get slave xlog location.
>>
>>
>> *******  root at slave:/var/lib/postgresql/9.1/main# tail -f
>> /var/log/postgresql/postgresql-9.1-main.log **********
>> 2014-03-12 18:42:39 PDT LOG:  entering standby mode
>> cp: cannot stat
>> `/var/lib/postgresql/9.1/main/pg_archive/00000001000000000000002D': No
>> such
>> file or directory
>> 2014-03-12 18:42:39 PDT LOG:  redo starts at 0/2D000078
>> 2014-03-12 18:42:39 PDT LOG:  consistent recovery state reached at
>> 0/2E000000
>> 2014-03-12 18:42:39 PDT LOG:  database system is ready to accept read only
>> connections
>> cp: cannot stat
>> `/var/lib/postgresql/9.1/main/pg_archive/00000001000000000000002E': No
>> such
>> file or directory
>> 2014-03-12 18:42:39 PDT LOG:  unexpected pageaddr 0/25000000 in log file
>> 0,
>> segment 46, offset 0
>> cp: cannot stat
>> `/var/lib/postgresql/9.1/main/pg_archive/00000001000000000000002E': No
>> such
>> file or directory
>> cp: cannot stat `/var/lib/postgresql/9.1/main/
>> pg_archive/00000002.history':
>> No such file or directory
>> 2014-03-12 18:42:39 PDT LOG:  streaming replication successfully connected
>> to primary
>>
>>
>> ************ crm_mon ***************
>> ============
>> Last updated: Wed Mar 12 19:11:42 2014
>> Last change: Wed Mar 12 18:42:39 2014 via crm_resource on slave
>> Stack: openais
>> Current DC: slave - partition with quorum
>> Version: 1.1.6-9971ebba4494012a93c03b40a2c58ec0eb60f50c
>> 2 Nodes configured, 2 expected votes
>> 3 Resources configured.
>> ============
>>
>> Online: [ slave master ]
>>
>>   Master/Slave Set: ms_pgsql_1 [res_pgsql_postgresql]
>>       Slaves: [ slave ]
>>       Stopped: [ res_pgsql_postgresql:1 ]
>> res_IPaddr2_1   (ocf::heartbeat:IPaddr2):       Started master
>>
>> Failed actions:
>>      res_pgsql_postgresql:1_start_0 (node=master, call=45, rc=1,
>> status=complete): unknown error
>>
>>
>>
>> **************** crm cib ***********************
>>
>> node master \
>> attributes res_pgsql_postgresql-data-status="DISCONNECT" standby="off"
>> node slave \
>> attributes res_pgsql_postgresql-data-status="DISCONNECT" standby="off"
>> primitive res_IPaddr2_1 ocf:heartbeat:IPaddr2 \
>> params ip="172.70.65.71" nic="eth0:0" \
>> operations $id="res_IPaddr2_1-operations" \
>> op start interval="0" timeout="20" \
>> op stop interval="0" timeout="20" \
>> op monitor interval="10" timeout="20" start-delay="0"
>> primitive res_pgsql_postgresql ocf:heartbeat:pgsql \
>> params pgctl="/usr/lib/postgresql/9.1/bin/pg_ctl"
>> psql="/usr/lib/postgresql/9.1/bin/psql"
>> pgdata="/var/lib/postgresql/9.1/main" monitor_user="postgres"
>> monitor_password="postgres"
>> config="/etc/postgresql/9.1/main/postgresql.conf"
>> logfile="/var/log/postgresql/postgresql-9.1-main.log"
>> socketdir="/var/run/postgresql" rep_mode="sync" node_list="master slave"
>> restore_command="cp /var/lib/postgresql/9.1/main/pg_archive/%f %p"
>> master_ip="172.70.65.61" restart_on_promote="true" \
>> operations $id="res_pgsql_postgresql-operations" \
>> op start interval="0" timeout="120" \
>> op promote interval="0" timeout="120" \
>> op demote interval="0" timeout="120" \
>> op stop interval="0" timeout="120" \
>> op monitor interval="29" timeout="30" start-delay="0" \
>> op notify interval="0" timeout="90" \
>> op methods interval="0" timeout="5" \
>> meta target-role="started"
>> ms ms_pgsql_1 res_pgsql_postgresql \
>> meta clone-max="2" notify="true" interleave="true"
>> property $id="cib-bootstrap-options" \
>> default-resource-stickiness="100" \
>> expected-quorum-votes="2" \
>> stonith-enabled="false" \
>> dc-version="1.1.6-9971ebba4494012a93c03b40a2c58ec0eb60f50c" \
>> no-quorum-policy="ignore" \
>> cluster-infrastructure="openais" \
>> last-lrm-refresh="1394676975"
>>
>>
>>
>> if deactive the pgsql the replication work fine.
>> following  the configure files.
>>
>>
>>
>> ******** SLAVE ********
>>
>> ******* root at slave:/var/lib/postgresql/9.1/main# cat recovery.conf
>>
>> standby_mode = 'on'
>> primary_conninfo = 'host=172.70.65.61 port=5432 user=postgres
>> application_name= '
>> restore_command = 'cp /var/lib/postgresql/9.1/main/pg_archive/%f %p'
>> recovery_target_timeline = 'latest'
>>
>>
>> ******** root at slave:/var/lib/postgresql/9.1/main# cat
>> /etc/postgresql/9.1/main/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 = '/var/lib/postgresql/9.1/main'         # use data in
>> another directory
>>                                          # (change requires restart)
>> hba_file = '/etc/postgresql/9.1/main/pg_hba.conf'       # host-based
>> authentication file
>>                                          # (change requires restart)
>> ident_file = '/etc/postgresql/9.1/main/pg_ident.conf'   # ident
>> configuration file
>>                                          # (change requires restart)
>>
>> # If external_pid_file is not explicitly set, no extra PID file is
>> written.
>> external_pid_file = '/var/run/postgresql/9.1-main.pid'          # write
>> an
>> extra PID file
>>                                          # (change requires restart)
>>
>>
>> #-----------------------------------------------------------
>> -------------------
>> # CONNECTIONS AND AUTHENTICATION
>> #-----------------------------------------------------------
>> -------------------
>>
>> # - Connection Settings -
>>
>> listen_addresses = '*'                  # what IP address(es) to listen
>> on;
>>                                          # comma-separated list of
>> addresses;
>>                                          # defaults to 'localhost', '*' =
>> 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 = '/var/run/postgresql'           # (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 = true                              # (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 = 24MB                   # 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 = ''          # (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 = minimal                    # 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 = 3                # 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 = off             # allows archiving to be done
>>                                  # (change requires restart)
>> #archive_command = ''           # command to use to archive a logfile
>> segment
>> #archive_timeout = 0            # 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 = 0            # max number of walsender processes
>>                                  # (change requires restart)
>> #wal_sender_delay = 1s          # walsender cycle time, 1-10000
>> milliseconds
>> #wal_keep_segments = 0          # 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 = 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
>> #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
>>                                          # 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 = warning             # values in order of decreasing
>> detail:
>>                                          #   debug5
>>                                          #   debug4
>>                                          #   debug3
>>                                          #   debug2
>>                                          #   debug1
>>                                          #   info
>>                                          #   notice
>>                                          #   warning
>>                                          #   error
>>                                          #   log
>>                                          #   fatal
>>                                          #   panic
>>
>> #log_min_error_statement = error        # values in order of decreasing
>> detail:
>>                                          #   debug5
>>                                          #   debug4
>>                                          #   debug3
>>                                          #   debug2
>>                                          #   debug1
>>                                          #   info
>>                                          #   notice
>>                                          #   warning
>>                                          #   error
>>                                          #   log
>>                                          #   fatal
>>                                          #   panic (effectively off)
>>
>> #log_min_duration_statement = -1        # -1 is disabled, 0 logs all
>> statements
>>                                          # and their durations, > 0 logs
>> only
>>                                          # statements running at least
>> this
>> number
>>                                          # of milliseconds
>> # - What to Log -
>>
>> #debug_print_parse = off
>> #debug_print_rewritten = off
>> #debug_print_plan = off
>> #debug_pretty_print = on
>> #log_checkpoints = off
>> #log_connections = off
>> #log_disconnections = off
>> #log_duration = off
>> #log_error_verbosity = default          # terse, default, or verbose
>> messages
>> #log_hostname = off
>> log_line_prefix = '%t '                 # 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 = 1024       # (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_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_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'
>> # - 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 = ''           # list of custom variable class
>> names
>> include '/var/lib/pgsql/tmp/rep_mode.conf' # added by pgsql RA
>>
>>
>> ******** root at slave:/var/lib/postgresql/9.1/main# cat
>> /var/lib/pgsql/tmp/rep_mode.conf
>> synchronous_standby_names = ''
>>
>>
>>
>> ******** root at slave:/var/lib/postgresql/9.1/main# cat
>> /etc/corosync/corosync.conf
>> # Please read the openais.conf.5 manual page
>>
>> totem {
>>          version: 2
>>
>>          # How long before declaring a token lost (ms)
>>          token: 3000
>>
>>          # How many token retransmits before forming a new configuration
>>          token_retransmits_before_loss_const: 10
>>
>>          # How long to wait for join messages in the membership protocol
>> (ms)
>>          join: 60
>>
>>          # How long to wait for consensus to be achieved before starting a
>> new round of membership configuration (ms)
>>          consensus: 3600
>>
>>          # Turn off the virtual synchrony filter
>>          vsftype: none
>>
>>          # Number of messages that may be sent by one processor on receipt
>> of the token
>>          max_messages: 20
>>
>>          # Limit generated nodeids to 31-bits (positive signed integers)
>>          clear_node_high_bit: yes
>>
>>          # Disable encryption
>>          secauth: off
>>
>>          # How many threads to use for encryption/decryption
>>          threads: 0
>>
>>          # Optionally assign a fixed node id (integer)
>>          # nodeid: 1234
>>
>>          # This specifies the mode of redundant ring, which may be none,
>> active, or passive.
>>          rrp_mode: none
>>
>>          interface {
>>                  # The following values need to be set based on your
>> environment
>>                  ringnumber: 0
>>                  bindnetaddr: 172.70.65.71
>>                  mcastaddr: 226.94.1.1
>>                  mcastport: 5405
>>          }
>> }
>>
>> amf {
>>          mode: disabled
>> }
>>
>> service {
>>          # Load the Pacemaker Cluster Resource Manager
>>          ver:       0
>>          name:      pacemaker
>> }
>>
>> aisexec {
>>          user:   root
>>          group:  root
>> }
>>
>> logging {
>>          fileline: off
>>          to_stderr: yes
>>          to_logfile: no
>>          to_syslog: yes
>>          syslog_facility: daemon
>>          debug: off
>>          timestamp: on
>>          logger_subsys {
>>                  subsys: AMF
>>                  debug: off
>>                  tags: enter|leave|trace1|trace2|trace3|trace4|trace6
>>          }
>> }
>>
>>
>>
>>
>>
>> *************** MASTER ******************************
>>
>> ********** root at master:/etc/postgresql/9.1/main# 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, 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 = '/var/lib/postgresql/9.1/main'         # use data in
>> another directory
>>                                          # (change requires restart)
>> hba_file = '/etc/postgresql/9.1/main/pg_hba.conf'       # host-based
>> authentication file
>>                                          # (change requires restart)
>> ident_file = '/etc/postgresql/9.1/main/pg_ident.conf'   # ident
>> configuration file
>>                                          # (change requires restart)
>>
>> # If external_pid_file is not explicitly set, no extra PID file is
>> written.
>> external_pid_file = '/var/run/postgresql/9.1-main.pid'          # write
>> an
>> extra PID file
>>                                          # (change requires restart)
>>
>>
>> #-----------------------------------------------------------
>> -------------------
>> # CONNECTIONS AND AUTHENTICATION
>> #-----------------------------------------------------------
>> -------------------
>>
>> # - Connection Settings -
>>
>> listen_addresses = '*'          # what IP address(es) to listen on;
>>                                          # comma-separated list of
>> addresses;
>>                                          # defaults to 'localhost', '*' =
>> 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 = '/var/run/postgresql'           # (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 = true                              # (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 = 24MB                   # 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 = ''          # (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 = 3                # 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 = 'rsync -a %p -e
>> root at slave:/var/lib/postgresql/9.1/main/pg_archive/%f'
>>                 # command to use to archive a logfile segment
>> archive_timeout = 10            # 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 = 32          # 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 = off                      # "on" allows queries during
>> recovery
>>                                          # (change requires restart)
>> #max_standby_archive_delay = 30s        # max delay before canceling
>> queries
>>                                          # when reading WAL from archive;
>>                                          # -1 allows indefinite delay
>> #max_standby_streaming_delay = 30s      # max delay before canceling
>> queries
>>                                          # when reading streaming WAL;
>>                                          # -1 allows indefinite delay
>> #wal_receiver_status_interval = 10s     # send replies at least this often
>>                                          # 0 disables
>> #hot_standby_feedback = off             # send info from standby to
>> prevent
>>                                          # query conflicts
>> #-----------------------------------------------------------
>> -------------------
>> # 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 = 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
>> #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
>>                                          # 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 = warning             # values in order of decreasing
>> detail:
>>                                          #   debug5
>>                                          #   debug4
>>                                          #   debug3
>>                                          #   debug2
>>                                          #   debug1
>>                                          #   info
>>                                          #   notice
>>                                          #   warning
>>                                          #   error
>>                                          #   log
>>                                          #   fatal
>>                                          #   panic
>>
>> #log_min_error_statement = error        # values in order of decreasing
>> detail:
>>                                          #   debug5
>>                                          #   debug4
>>                                          #   debug3
>>                                          #   debug2
>>                                          #   debug1
>>                                          #   info
>>                                          #   notice
>>                                          #   warning
>>                                          #   error
>>                                          #   log
>>                                          #   fatal
>>                                          #   panic (effectively off)
>>
>> #log_min_duration_statement = -1        # -1 is disabled, 0 logs all
>> statements
>>                                          # and their durations, > 0 logs
>> only
>>                                          # statements running at least
>> this
>> number
>>                                          # of milliseconds
>> # - What to Log -
>>
>> #debug_print_parse = off
>> #debug_print_rewritten = off
>> #debug_print_plan = off
>> #debug_pretty_print = on
>> #log_checkpoints = off
>> #log_connections = off
>> #log_disconnections = off
>> #log_duration = off
>> #log_error_verbosity = default          # terse, default, or verbose
>> messages
>> #log_hostname = off
>> log_line_prefix = '%t '                 # 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 = 1024       # (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;
>
>


-- 
------------------------------
Thomaz Luiz Santos
Linux User: #359356
http://thomaz.santos.googlepages.com/
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