通過 apache 進行 Postgres 身份驗證的問題

我在 RHEL 5.4 上，並且我已經使用 PostgreSQL 作為數據庫設置了一個Django項目（我以前使用過 MySQL，但想嘗試一些新的東西:)）。當我執行 Django 測試伺服器時，一切正常，我還可以通過命令行連接密碼驗證：

psql -U myuser -h 127.0.0.1

但是當我嘗試通過 Apache 訪問我的項目時，我在 apache 的錯誤日誌中得到一個 500 錯誤程式碼和這個 python 回溯：

mod_wsgi (pid=7026): Exception occurred processing WSGI script '/var/www/myproject/myproject/hook.wsgi'.
Traceback (most recent call last):
 File "/var/www/myproject/myproject/src/django/django/core/handlers/wsgi.py", line 245, in __call__
   response = middleware_method(request, response)
 File "/var/www/myproject/myproject/src/django/django/contrib/sessions/middleware.py", line 36, in process_response
   request.session.save()
 File "/var/www/myproject/myproject/src/django/django/contrib/sessions/backends/db.py", line 55, in save
   obj = Session(
 File "/var/www/myproject/myproject/src/django/django/contrib/sessions/backends/base.py", line 152, in _get_session_key
   self._session_key = self._get_new_session_key()
 File "/var/www/myproject/myproject/src/django/django/contrib/sessions/backends/base.py", line 144, in _get_new_session_key
   if not self.exists(session_key):
 File "/var/www/myproject/myproject/src/django/django/contrib/sessions/backends/db.py", line 29, in exists
   Session.objects.get(session_key=session_key)
 File "/var/www/myproject/myproject/src/django/django/db/models/manager.py", line 132, in get
   return self.get_query_set().get(*args, **kwargs)
 File "/var/www/myproject/myproject/src/django/django/db/models/query.py", line 336, in get
   num = len(clone)
 File "/var/www/myproject/myproject/src/django/django/db/models/query.py", line 81, in __len__
   self._result_cache = list(self.iterator())
 File "/var/www/myproject/myproject/src/django/django/db/models/query.py", line 269, in iterator
   for row in compiler.results_iter():
 File "/var/www/myproject/myproject/src/django/django/db/models/sql/compiler.py", line 672, in results_iter
   for rows in self.execute_sql(MULTI):
 File "/var/www/myproject/myproject/src/django/django/db/models/sql/compiler.py", line 726, in execute_sql
   cursor = self.connection.cursor()
 File "/var/www/myproject/myproject/src/django/django/db/backends/__init__.py", line 75, in cursor
   cursor = self._cursor()
 File "/var/www/myproject/myproject/src/django/django/db/backends/postgresql_psycopg2/base.py", line 136, in _cursor
   self.connection = Database.connect(**conn_params)
OperationalError: could not connect to server: Permission denied
\tIs the server running on host "127.0.0.1" and accepting
\tTCP/IP connections on port 5432?

我查了conn_params字典，它包含正確的使用者名和密碼。我的pg_hba.conf樣子是這樣的（我在 Ubuntu 9.04 伺服器上的配置完全相同，一切正常）：

local   all         postgres                          ident
local   all         all                               md5
host    all         all         127.0.0.1/32          md5
host    all         all         ::1/128               md5

我究竟做錯了什麼？

常見的錯誤之一是以純文字形式指定密碼，而根據您的pg_hba.conf配置，它應該作為 md5 提供。

使用 md5 更新配置文件中的密碼，然後重試。您可以為此使用任何 MD5 生成器，例如這個。

引用自：https://serverfault.com/questions/179187