Connexions distantes à Postgres

[shindara]

Bonjour,

J'essaye depuis un petit moment de connecté plusieurs machines à un serveur Postgres installé sur mon PC.
Voila le contexte : je développe un application Java sous Netbeans, j'ai installé sur mon PC le serveur Postgres et les bases de données correspondantes et j'arrive à faire ce que je veux sur ma machine. Je peux me connecter à postgres et effectuer mes requetes.
Le probleme vient quand j'essaye d'exécuter mon code sur une autre machine. J'ai remplacé localhost par mon adresse IP dans l'url suivante 'this.url = "jdbc:postgresql://localhost:5432/Cas_Cliniques_v2";',
et j'ai ensuite modifié le fichier pg_hba.conf en autorisant toutes les connexions extérieures avec la ligne suivante :
'host ALL ALL 0.0.0.0 0.0.0.0 md5'
je préfère prévenir que je ne connais pas du tout Postgres et que mes connaissances en réseaux sont très limitées.
Donc en ne faisant que ça j'obtient l'erreur suivante quand j'essaye d'exécuter mon appli java :
Probleme lors de l'execution de la requete : org.postgresql.util.PSQLException: Connexion refusée. Vérifiez que le nom de machine et le port sont corrects et que postmaster accepte les connexions TCP/IP.
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at CasCliniques.AgentCasCliniquesApprenant.Interface.Test.jButton1MouseClicked(Test.java:320)
at CasCliniques.AgentCasCliniquesApprenant.Interface.Test.access$000(Test.java:13)
at CasCliniques.AgentCasCliniquesApprenant.Interface.Test$1.mouseClicked(Test.java:238)


Donc j'ai cru comprendre qu'il fallait autoriser les connexions TCP/IP, mais je n'ai pas compris comment faire et je ne sais de toute facon même pas si mon problème vient de là.

Voilà, j'espère avoir été assez précis et si qqun pouvait m'aider (voire me sauver... :-) ce serait cool

merci
Thomas

[eclesia]

il te faut aussi la ligne :

listen_addresses = '*'

dans le fichier postgresql.conf

[KiLVaiDeN]

Salut,

As-tu ajouté l'option :

Code :

listen_addresses = '*'

*edit : grilled*

[shindara]

Oui oui la ligne listen_adresses='*' est bien présente.
De toute facon je crois qu'elle est comme ca par défaut dans le fichier postgresql.conf non ?
en tout cas ca marche toujours pas...
merci quand meme

[KiLVaiDeN]

Quelle version de postgres utilises-tu ?

Peux-tu poster le fichier de conf en entier pour qu'on voit si il y a un problème ?

[shindara]

j'utilise la version 8.2 et voici le fichier de conf


# run-time with the 'SET' SQL command.
#
# This file is read on server startup and when the server receives a
# SIGHUP. 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
# settings, which are marked below, require a server shutdown and restart
# to take effect.


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

# The default values of these variables are driven from the -D command line
# switch 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). You
# might also need to raise shared_buffers to support more connections.
#superuser_reserved_connections = 3 # (change requires restart)
#unix_socket_directory = '' # (change requires restart)
#unix_socket_group = '' # (change requires restart)
#unix_socket_permissions = 0777 # octal
# (change requires restart)
#bonjour_name = '' # defaults to the computer name
# (change requires restart)

# - Security & Authentication -

#authentication_timeout = 1min # 1s-600s
#ssl = off # (change requires restart)
#password_encryption = on
#db_user_namespace = off

# Kerberos
#krb_server_keyfile = '' # (change requires restart)
#krb_srvname = 'postgres' # (change requires restart)
#krb_server_hostname = '' # empty string matches any keytab entry
# (change requires restart)
#krb_caseins_users = off # (change requires restart)

# - 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 = 32MB # min 128kB or max_connections*16kB
# (change requires restart)
#temp_buffers = 8MB # min 800kB
#max_prepared_transactions = 5 # can be 0 or more
# (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).
#work_mem = 1MB # min 64kB
#maintenance_work_mem = 16MB # min 1MB
#max_stack_depth = 2MB # min 100kB

# - Free Space Map -

max_fsm_pages = 204800 # min max_fsm_relations*16, 6 bytes each
# (change requires restart)
#max_fsm_relations = 1000 # min 100, ~70 bytes each
# (change requires restart)

# - 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 = 0 # 0-1000 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 # 0-10000 credits

# - Background writer -

#bgwriter_delay = 200ms # 10-10000ms between rounds
#bgwriter_lru_percent = 1.0 # 0-100% of LRU buffers scanned/round
#bgwriter_lru_maxpages = 5 # 0-1000 buffers max written/round
#bgwriter_all_percent = 0.333 # 0-100% of all buffers scanned/round
#bgwriter_all_maxpages = 5 # 0-1000 buffers max written/round


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

# - Settings -

#fsync = on # turns forced synchronization on or off
#wal_sync_method = fsync # the default is the first option
# supported by the operating system:
# open_datasync
# fdatasync
# fsync
# fsync_writethrough
# open_sync
#full_page_writes = on # recover from partial page writes
#wal_buffers = 64kB # min 32kB
# (change requires restart)
#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_warning = 30s # 0 is off

# - Archiving -

#archive_command = '' # command to use to archive a logfile segment
#archive_timeout = 0 # force a logfile segment switch after this
# many seconds; 0 is off


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

# - Planner Method Configuration -

#enable_bitmapscan = on
#enable_hashagg = on
#enable_hashjoin = on
#enable_indexscan = 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

# - Other Planner Options -

#default_statistics_target = 10 # range 1-1000
#constraint_exclusion = off
#from_collapse_limit = 8
#join_collapse_limit = 8 # 1 disables collapsing of explicit
# JOINs


#---------------------------------------------------------------------------
# ERROR REPORTING AND LOGGING
#---------------------------------------------------------------------------

# - Where to Log -

log_destination = 'stderr' # Valid values are combinations of
# stderr, syslog and eventlog,
# depending on platform.

# This is used when logging to stderr:
redirect_stderr = on # Enable capturing of stderr into log
# files
# (change requires restart)

# These are only used if redirect_stderr 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_truncate_on_rotation = off # If on, any existing log file of 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 to
# disable.
#log_rotation_size = 10MB # Automatic rotation of logfiles will
# happen after that much log
# output. 0 to disable.

# These are relevant when logging to syslog:
#syslog_facility = 'LOCAL0'
#syslog_ident = 'postgres'


# - 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 = notice # Values, in order of decreasing detail:
# debug5
# debug4
# debug3
# debug2
# debug1
# info
# notice
# warning
# error
# log
# fatal
# panic

#log_error_verbosity = default # terse, default, or verbose messages

#log_min_error_statement = error # Values in order of increasing severity:
# debug5
# debug4
# debug3
# debug2
# debug1
# info
# notice
# warning
# error
# fatal
# panic (effectively off)

#log_min_duration_statement = -1 # -1 is disabled, 0 logs all statements
# and their durations.

#silent_mode = off # DO NOT USE without syslog or
# redirect_stderr
# (change requires restart)

# - What to Log -

#debug_print_parse = off
#debug_print_rewritten = off
#debug_print_plan = off
#debug_pretty_print = off
#log_connections = off
#log_disconnections = off
#log_duration = off
log_line_prefix = '%t ' # Special values:
# %u = user name
# %d = database name
# %r = remote host and port
# %h = remote host
# %p = PID
# %t = timestamp (no milliseconds)
# %m = timestamp with milliseconds
# %i = command tag
# %c = session id
# %l = session line number
# %s = session start timestamp
# %x = transaction id
# %q = stop here in non-session
# processes
# %% = '%'
# e.g. '<%u%%%d> '
#log_statement = 'none' # none, ddl, mod, all
#log_hostname = off


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

# - Query/Index Statistics Collector -

#stats_command_string = on
#update_process_title = on

stats_start_collector = on # needed for block or row stats
# (change requires restart)
#stats_block_level = off
stats_row_level = on
#stats_reset_on_server_start = off # (change requires restart)


# - 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 stats_start_collector
# and stats_row_level to also be on
#autovacuum_naptime = 1min # time between autovacuum runs
#autovacuum_vacuum_threshold = 500 # min # of tuple updates before
# vacuum
#autovacuum_analyze_threshold = 250 # min # of tuple updates before
# analyze
#autovacuum_vacuum_scale_factor = 0.2 # fraction of rel size before
# vacuum
#autovacuum_analyze_scale_factor = 0.1 # fraction of rel size before
# analyze
#autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum
# (change requires restart)
#autovacuum_vacuum_cost_delay = -1 # default vacuum cost delay for
# autovacuum, -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
#check_function_bodies = on
#default_transaction_isolation = 'read committed'
#default_transaction_read_only = off
#statement_timeout = 0 # 0 is disabled
#vacuum_freeze_min_age = 100000000

# - Locale and Formatting -

datestyle = 'iso, dmy'
#timezone = unknown # actually, defaults to TZ
# environment setting
#timezone_abbreviations = 'Default' # select the set of available timezone
# abbreviations. Currently, there are
# Default
# Australia
# India
# However you can also create your own
# file in share/timezonesets/.
#extra_float_digits = 0 # min -15, max 2
#client_encoding = sql_ascii # actually, defaults to database
# encoding

# These settings are initialized by initdb -- they might be changed
lc_messages = 'French_France' # locale for system error message
# strings
lc_monetary = 'French_France' # locale for monetary formatting
lc_numeric = 'French_France' # locale for number formatting
lc_time = 'French_France' # locale for time formatting

# - Other Defaults -

#explain_pretty_print = on
#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.


#---------------------------------------------------------------------------
# VERSION/PLATFORM COMPATIBILITY
#---------------------------------------------------------------------------

# - Previous Postgres Versions -

#add_missing_from = off
#array_nulls = on
#backslash_quote = safe_encoding # on, off, or safe_encoding
#default_with_oids = off
#escape_string_warning = on
#standard_conforming_strings = off
#regex_flavor = advanced # advanced, extended, or basic
#sql_inheritance = on

# - Other Platforms & Clients -

#transform_null_equals = off


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

#custom_variable_classes = '' # list of custom variable class names

[shindara]

est-ce que j'ai besoin d'installer quelque chose de postgres sur les postes clients ??

[eclesia]

dans ta ligne 'host ALL ALL 0.0.0.0 0.0.0.0 md5'

je me demande s'il faut pas des 255 ou * tout simplement.

je ne sais plus

[KiLVaiDeN]

Salut, voici ce qu'ils disent dans la doc, peut-être un problème de majuscules minuscules ? Essaies avec ça :

Code :

host    ALL         ALL         0.0.0.0/0             md5

Il faut redémarrer postgres après un tel changement.

[shindara]

Ca marche toujours pas...
Je pense que la ligne que tu propose correspond à peu près à ce que j'avais déjà.
Par contre, partout où j'ai cherché, on parle d'autoriser les connexions TCP/IP avec un champ '-i' à mettre je sais pas où. Peut être qu'il faut tout simplement lancer Postgres en ligne de commande. Peut être que ça te dit quelque chose
En tous les cas, là je suis perdu et j'ai pas avancé de la matinée.

[eclesia]

un pare-feu peut etre? un routeur?

[KiLVaiDeN]

T'aurais pas une autre ligne qui viendrait contredire celle là ?

[shindara]

Alors concernant le pare feu, j'ai que le pare feu de Windows qui tourne, je sais pas si ca peut bloquer la connexion. Et je passe par hub pour la connexion Internet.
Et sinon pour la ligne venant contredire l'autre, je vois pas mais encore une fois je suis vraiment pas un expert de postgres

[KiLVaiDeN]

Le pare feu windows ?

Serieusement, son intêret est limité, que ce soit en terme de protection, qu'en terme de confort d'utilisation : pour moi c'est un jouet

Desactive le pour voir, si ça se trouve miraculeusement ça va marcher.

Sinon le hub ne devrait pas poser de problème, il devrait bien router vers la bonne ip, il ne filtre rien ( t'es sûr que c'est un hub et pas un routeur ? )

A+

[JLGARIOUD]

modiife la ligne dans pg_hba.conf

host ALL ALL 0.0.0.0/0 trust

pour avoir un acces distant

[bustaf]

Bonjour
il faut mettre dans le fichier hba_conf
(IPV4)
host all all 127.0.0.1/32 trust
host all all 192.168.1.??/32 trust (adresse de votre machine serveur)
host all all 192.168.1.??/32 trust (adresses des machines qui se connectent)
idem pour les (adresses des autres machines qui connectent)

(Attention de metrre le (cidr) sur /32 ou 255.255.255.255) cela represente
chaque adresse unique) d'une classe C

(IPV6)
host all all :/128 trust

2]
Il faut modifier dans le fichier postgresql.conf
listen_adressses = "127.0.0.1,192.168.??.??, etc....."
(192.168.??.?? est l'adresse de votre serveur ...

Si client O/S Microsoft ?
Il faut ajouter le port 5432 avec l'opion firwall dans l'écran de configuration
de l'interface reseaux Microsoft (??? imperatif avec server 2008 ou longhorn Vista ou autres je ne sais pas (si pgadmin
non installé) je pense qu'il doit faire cette configuration dans l'installation))

Pour tester le fontionnement
sur un client
psql -h 192.168.1.??? -d (nom de la base)
192.168.1.??? est l'adresse de votre serveur ...
\d pour lister les tables et verifier que vous etes sur la base du serveur

Pour passer sous (JAVA) sur le service 80 il faut changer le localhost par l'adresse du serveur
dans votre code
(demandez un complement d'info si votre reseau est en DHCP ???? et que vous ne savez pas faire un adressage IP standard lié avec
un routage PPPD en forward ou proxy pour partager la connexion web).
Bonne chance.