On 02/22/2015 11:02 PM, VENKTESH GUTTEDAR wrote:
Hello,i have Postgresql 9.3.5 installed and django 1.7 and till now it was working fine. But now i am getting the following error while starting the server to run my app : Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0xb2da8074> Traceback (most recent call last): File "/usr/local/lib/python3.4/dist-packages/django/db/backends/__init__.py", line 133, in ensure_connection self.connect() File "/usr/local/lib/python3.4/dist-packages/django/db/backends/__init__.py", line 122, in connect self.connection = self.get_new_connection(conn_params) File "/usr/local/lib/python3.4/dist-packages/django/db/backends/postgresql_psycopg2/base.py", line 134, in get_new_connection return Database.connect(**conn_params) File "/usr/local/lib/python3.4/dist-packages/psycopg2/__init__.py", line 164, in connect conn = _connect(dsn, connection_factory=connection_factory, async=async) psycopg2.OperationalError: could not translate host name "localhost" to address: Name or service not known The above exception was the direct cause of the following exception: Traceback (most recent call last): File "/usr/local/lib/python3.4/dist-packages/django/utils/autoreload.py", line 222, in wrapper fn(*args, **kwargs) File "/usr/local/lib/python3.4/dist-packages/django/core/management/commands/runserver.py", line 107, in inner_run self.check_migrations() File "/usr/local/lib/python3.4/dist-packages/django/core/management/commands/runserver.py", line 159, in check_migrations executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS]) File "/usr/local/lib/python3.4/dist-packages/django/db/migrations/executor.py", line 17, in __init__ self.loader = MigrationLoader(self.connection) File "/usr/local/lib/python3.4/dist-packages/django/db/migrations/loader.py", line 48, in __init__ self.build_graph() File "/usr/local/lib/python3.4/dist-packages/django/db/migrations/loader.py", line 183, in build_graph self.applied_migrations = recorder.applied_migrations() File "/usr/local/lib/python3.4/dist-packages/django/db/migrations/recorder.py", line 59, in applied_migrations self.ensure_schema() File "/usr/local/lib/python3.4/dist-packages/django/db/migrations/recorder.py", line 49, in ensure_schema if self.Migration._meta.db_table in self.connection.introspection.get_table_list(self.connection.cursor()): File "/usr/local/lib/python3.4/dist-packages/django/db/backends/__init__.py", line 165, in cursor cursor = self.make_debug_cursor(self._cursor()) File "/usr/local/lib/python3.4/dist-packages/django/db/backends/__init__.py", line 138, in _cursor self.ensure_connection() File "/usr/local/lib/python3.4/dist-packages/django/db/backends/__init__.py", line 133, in ensure_connection self.connect() File "/usr/local/lib/python3.4/dist-packages/django/db/utils.py", line 94, in __exit__ six.reraise(dj_exc_type, dj_exc_value, traceback) File "/usr/local/lib/python3.4/dist-packages/django/utils/six.py", line 658, in reraise raise value.with_traceback(tb) File "/usr/local/lib/python3.4/dist-packages/django/db/backends/__init__.py", line 133, in ensure_connection self.connect() File "/usr/local/lib/python3.4/dist-packages/django/db/backends/__init__.py", line 122, in connect self.connection = self.get_new_connection(conn_params) File "/usr/local/lib/python3.4/dist-packages/django/db/backends/postgresql_psycopg2/base.py", line 134, in get_new_connection return Database.connect(**conn_params) File "/usr/local/lib/python3.4/dist-packages/psycopg2/__init__.py", line 164, in connect conn = _connect(dsn, connection_factory=connection_factory, async=async) django.db.utils.OperationalError: could not translate host name "localhost" to address: Name or service not known can anyone tell me what is the reason for this error.?
Should have added, this is a generic connection error, below Django and even psycopg2 for that matter. To solve I would work up the ladder:
1) Try a psql connection. My guess is it will fail. 2) If it does not, try a straight psycopg2 connection. 3) If step 2 does not fail, then try the Django app.
-- Regards : Venktesh Guttedar.
-- Adrian Klaver adrian.kla...@aklaver.com -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
