ubuntu编译安装postgresql及主从配置

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操作系统版本        Ubuntu 14.04
数据库软件版本     postgresql-9.4.7.tar.gz
安装方式               编译安装
软件安装目录        /usr/local/pgsql
数据存放目录        /service/postgresql/data
日志存放目录        /service/postgresql/archive


1、安装依赖包
sudo apt-get update
sudo apt-get install -y libreadline6-dev
sudo apt-get install -y lib1g-dev
sudo apt-get install -y openssl
sudo apt-get install -y libssl-dev
sudo apt-get install -y libpam-dev
sudo apt-get install -y libxml2-dev
sudo apt-get install -y libxslt1-dev
sudo apt-get install -y tcl-dev
sudo apt-get install -y libperl-dev
sudo apt-get install -y python-dev


2、编译安装软件和第三方工具
cd /usr/local/src
sudo wget https://ftp.postgresql.org/pub/source/v9.4.7/postgresql-9.4.7.tar.gz
sudo tar xf  postgresql-9.4.7.tar.gz
cd  postgresql-9.4.7


./configure\
  --prefix=/usr/local/pgsql\
  --with-pgport=5432\
  --with-perl\
  --with-tcl\
  --with-python\
  --with-openssl\
  --with-pam\
  --without-ldap\
  --with-libxml\
  --with-libxslt\
  --with-blocksize=8\
  --enable-thread-safety


sudo make -j 4 && sudo make install


cd /usr/local/src/postgresql-9.4.7/contrib
sudo make -j 4
sudo make install


3、创建postgresql用户并设置密码 (密码需要记录)
sudo useradd postgres
sudo passwd  postgres 


4、创建目录并授权

sudo mkdir   -p  /home/postgres
sudo mkdir   -p  /service/postgresql/run/postgresql/9.4-main.pg_stat_tmp
sudo mkdir   -p  /service/postgresql/data
sudo mkdir   -p  /service/postgresql/archive
sudo chown  -R  postgres.postgres  /home/postgres
sudo chown  -R  postgres.postgres  /service/postgresql/run 
sudo chown  -R  postgres.postgres  /service/postgresql/data
sudo chown  -R  postgres.postgres  /service/postgresql/archive


5、初始化数据库
su postgres
cd /usr/local/pgsql/bin/
./initdb -D /service/postgresql/data/ -E UTF-8  --locale=en_US.UTF-8


6、设置环境变量
vim  ~/.bash_profile
PGLIB=/usr/local/pgsql/lib
PGDATA=/service/postgresql/data
PATH=$PATH:/usr/local/pgsql/bin:/usr/local/pgpool/bin
MANPATH=$MANPATH:/usr/local/pgsql/man
PGHOST=/service/postgresql/run/postgresql
export PGLIB PGDATA MANPATH PGHOST PATH


7、编辑配置文件
(1)修改主库的配置文件
vim /service/postgresql/data/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
#                TB = terabytes                     h   = hours
#                                                   d   = days



#------------------------------------------------------------------------------
# FILE LOCATIONS
#------------------------------------------------------------------------------


# The default values of these variables are driven from the -D command-line
# option or PGDATA environment variable, represented here as ConfigDir.


data_directory = ‘/service/postgresql/data‘  # use data in another directory
     # (change requires restart)
hba_file = ‘/service/postgresql/data/pg_hba.conf‘ # host-based authentication file
     # (change requires restart)
ident_file = ‘/service/postgresql/data/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 = ‘/service/postgresql/run/postgresql/9.4-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‘; use ‘*‘ for all
                     # (change requires restart)
port = 5432                 # (change requires restart)
max_connections = 1000       # (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_directories = ‘/tmp‘ # comma-separated list of directories
                     # (change requires restart)
unix_socket_directories = ‘/service/postgresql/run/postgresql‘
#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 = ‘HIGH:MEDIUM:+3DES:!aNULL‘ # allowed SSL ciphers
                     # (change requires restart)
#ssl_prefer_server_ciphers = on  # (change requires restart)
#ssl_ecdh_curve = ‘prime256v1‘  # (change requires restart)
#ssl_renegotiation_limit = 0  # amount of data between renegotiations
#ssl_cert_file = ‘server.crt‘  # (change requires restart)
#ssl_key_file = ‘server.key‘  # (change requires restart)
#ssl_ca_file = ‘‘           # (change requires restart)
#ssl_crl_file = ‘‘           # (change requires restart)
#password_encryption = on
#db_user_namespace = off


# GSSAPI using Kerberos
#krb_server_keyfile = ‘‘
#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)
#huge_pages = try           # on, off, or try
                     # (change requires restart)
#temp_buffers = 8MB           # min 800kB
#max_prepared_transactions = 0  # zero disables the feature
                     # (change requires restart)
max_prepared_transactions = 1500     
# 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 = 4MB            # min 64kB
maintenance_work_mem = 512MB  # min 1MB
#autovacuum_work_mem = -1      # min 1MB, or -1 to use maintenance_work_mem
#max_stack_depth = 2MB       # min 100kB
#dynamic_shared_memory_type = posix # the default is the first option
     # supported by the operating system:
     #   posix
     #   sysv
     #   windows
     #   mmap
     # use none to disable dynamic shared memory


# - Disk -
  
#temp_file_limit = -1       # limits per-session temp file space
                     # in kB, or -1 for no limit


# - Kernel Resource Usage -


#max_files_per_process = 1000  # min 25
                     # (change requires restart)
#shared_preload_libraries = ‘‘  # (change requires restart)
shared_preload_libraries = ‘pg_stat_statements‘  # (change requires restart)
pg_stat_statements.max = 10000
pg_stat_statements.track = all
# - Cost-Based Vacuum Delay -


#vacuum_cost_delay = 0        # 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
#max_worker_processes = 8



#------------------------------------------------------------------------------
# WRITE AHEAD LOG
#------------------------------------------------------------------------------


# - Settings -


wal_level = hot_standby       # minimal, archive, hot_standby, or logical
                     # (change requires restart)
#fsync = on                # turns forced synchronization on or off
#synchronous_commit = on      # synchronization level;
                     # off, local, remote_write, or on
#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_log_hints = off        # also do full page writes of non-critical updates
                     # (change requires restart)
#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 = ‘cp -i %p /service/postgresql/archive/%f </dev/null‘  # command to use to archive a logfile segment
    # placeholders: %p = path of file to archive
    #               %f = file name only
    # e.g. ‘test ! -f /mnt/server/archivedir/%f && cp %p /mnt/server/archivedir/%f‘
archive_timeout = 86400          # force a logfile segment switch after this
                        # number of seconds; 0 disables



#------------------------------------------------------------------------------
# REPLICATION
#------------------------------------------------------------------------------


# - Sending Server(s) -


# Set these on the master and on any standby that will send replication data.


max_wal_senders = 15          # max number of walsender processes
                        # (change requires restart)
wal_keep_segments = 100          # in logfile segments, 16MB each; 0 disables
#wal_sender_timeout = 60s         # in milliseconds; 0 disables


#max_replication_slots = 0         # max number of replication slots
                        # (change requires restart)


# - Master Server -


# These settings are ignored on a standby server.


#synchronous_standby_names = ‘‘     # standby servers that provide sync rep
    # comma-separated list of application_name
    # from standby(s); ‘*‘ = all
#vacuum_defer_cleanup_age = 0     # number of xacts by which cleanup is delayed


# - Standby Servers -


# These settings are ignored on a master server.


#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
#wal_receiver_timeout = 60s      # time that receiver waits for
     # communication from master
     # in milliseconds; 0 disables



#------------------------------------------------------------------------------
# QUERY TUNING
#------------------------------------------------------------------------------


# - Planner Method Configuration -


#enable_bitmapscan = on
#enable_hashagg = on
#enable_hashjoin = on
#enable_indexscan = on
#enable_indexonlyscan = on
#enable_material = on
#enable_mergejoin = on
#enable_nestloop = on
#enable_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 = 4GB


# - Genetic Query Optimizer -


#geqo = on
#geqo_threshold = 12
#geqo_effort = 5           # range 1-10
#geqo_pool_size = 0           # selects default based on effort
#geqo_generations = 0       # selects default based on effort
#geqo_selection_bias = 2.0      # range 1.5-2.0
#geqo_seed = 0.0           # range 0.0-1.0


# - Other Planner Options -


#default_statistics_target = 100 # range 1-10000
#constraint_exclusion = partition # on, off, or partition
#cursor_tuple_fraction = 0.1  # range 0.0-1.0
#from_collapse_limit = 8
#join_collapse_limit = 8      # 1 disables collapsing of explicit
                     # JOIN clauses



#------------------------------------------------------------------------------
# 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 = 100MB      # 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‘


# This is only relevant when logging to eventlog (win32):
#event_source = ‘PostgreSQL‘


# - 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 = 2000 # -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 [%p-%l] %q%[email protected]%d ‘   # 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 = ‘PRC‘



#------------------------------------------------------------------------------
# RUNTIME STATISTICS
#------------------------------------------------------------------------------


# - Query/Index Statistics Collector -


#track_activities = on
#track_counts = on
#track_io_timing = off
#track_functions = none       # none, pl, all
#track_activity_query_size = 1024 # (change requires restart)
#update_process_title = on
#stats_temp_directory = ‘pg_stat_tmp‘
stats_temp_directory = ‘/var/run/postgresql/9.4-main.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_multixact_freeze_max_age = 400000000 # maximum multixact 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
#lock_timeout = 0           # in milliseconds, 0 is disabled
#vacuum_freeze_min_age = 50000000
#vacuum_freeze_table_age = 150000000
#vacuum_multixact_freeze_min_age = 5000000
#vacuum_multixact_freeze_table_age = 150000000
#bytea_output = ‘hex‘       # hex, escape
#xmlbinary = ‘base64‘
#xmloption = ‘content‘
#gin_fuzzy_search_limit = 0


# - Locale and Formatting -


#datestyle = ‘iso, mdy‘
#intervalstyle = ‘postgres‘
#timezone = ‘GMT‘
#timezone_abbreviations = ‘Default‘     # Select the set of available time zone
     # abbreviations.  Currently, there are
     #   Default
     #   Australia (historical usage)
     #   India
     # You can create your own file in
     # share/timezonesets/.
#extra_float_digits = 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 = ‘C‘               # locale for system error message
                         # strings
#lc_monetary = ‘C‘               # locale for monetary formatting
#lc_numeric = ‘C‘               # locale for number formatting
#lc_time = ‘C‘                # locale for time formatting


# default configuration for text search
#default_text_search_config = ‘pg_catalog.simple‘


# - Other Defaults -


#dynamic_library_path = ‘$libdir‘
#local_preload_libraries = ‘‘
#session_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?



#------------------------------------------------------------------------------
# CONFIG FILE INCLUDES
#------------------------------------------------------------------------------


# These options allow settings to be loaded from files other than the
# default postgresql.conf.


#include_dir = ‘conf.d‘       # include files ending in ‘.conf‘ from
                     # directory ‘conf.d‘
#include_if_exists = ‘exists.conf‘ # include file only if it exists
#include = ‘special.conf‘      # include file



#------------------------------------------------------------------------------
# CUSTOMIZED OPTIONS
#------------------------------------------------------------------------------


# Add settings for extensions here




vim  /service/postgresql/data/pg_hba.conf


# 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
host    all             all             实际IP地址                       md5
host    all             all             实际IP地址                       md5
# IPv6 local connections:
host    all             all             ::1/128                             trust
# Allow replication connections from localhost, by a user with the
# replication privilege.
#local   replication     postgres                                    trust
#host    replication     postgres        127.0.0.1/32        trust
#host    replication     postgres        ::1/128                 trust
host     replication      repl            实际IP地址                trust
host     replication      repl            实际IP地址                trust


8、启动数据库
pg_ctl start


9、创建同步用户和数据库并授权
psql
CREATE USER repl WITH PASSWORD ‘root1234‘;
CREATE DATABASE db_repl;
GRANT ALL PRIVILEGES ON DATABASE db_repl to repl;



10、安装SLAVE数据库软件
注:不要初始化数据库,其它同样操作


11、配置ssh互信
主:
ssh-keygen
ssh-copy-id -i [email protected]从库IP地址
从:
ssh-keygen
ssh-copy-id -i [email protected]主库IP地址


12、备份主数据库
在主库上操作
psql -c "SELECT pg_start_backup(‘label‘, true)"
scp -r  /service/postgresql/data/*  [email protected]从库IP地址:/service/postgresql/data/
psql -c "SELECT pg_stop_backup()"


13、编辑备库配置文件
vim /service/postgresql/data/postgresql.conf
改:#hot_standby = on 
为: hot_standby = on 


vim  /service/postgresql/data/recovery.conf
recovery_target_timeline = ‘latest‘
standby_mode = ‘on‘
primary_conninfo = ‘host=实际主库IP地址 port=5432 user=repl password=root1234‘
trigger_file = ‘/service/postgresql/data/pg_root/postgresql.trigger.1921‘


14、启动备库
su postgres
pg_ctl  start


15、检查同步
在主库上操作以下步骤
psql
select * from pg_stat_replication;


本文出自 “zllcto” 博客,谢绝转载!

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