FATAL: password authentication failed for user "ubuntu" - django

Question

I'm using djanog version 1.11 and postgresql 9.5###,
I'm facing below error. but my django databases settings different.
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME':'test_db',
'USERNAME':'rails',
'PASSWORD':'rails',
'HOST':'localhost',
'PORT':'5432',
}
}
I think django pass user as ubuntu user, it's system logged in user.
System check identified no issues (0 silenced).
Unhandled exception in thread started by <function wrapper at 0x7f39fbfe5488>
Traceback (most recent call last):
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/utils/autoreload.py", line 227, in wrapper
fn(*args, **kwargs)
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/core/management/commands/runserver.py", line 128, in inner_run
self.check_migrations()
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/core/management/base.py", line 422, in check_migrations
executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/migrations/executor.py", line 20, in __init__
self.loader = MigrationLoader(self.connection)
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/migrations/loader.py", line 52, in __init__
self.build_graph()
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/migrations/loader.py", line 209, in build_graph
self.applied_migrations = recorder.applied_migrations()
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/migrations/recorder.py", line 65, in applied_migrations
self.ensure_schema()
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/migrations/recorder.py", line 52, in ensure_schema
if self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor()):
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 254, in cursor
return self._cursor()
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 229, in _cursor
self.ensure_connection()
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
self.connect()
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/utils.py", line 94, in __exit__
six.reraise(dj_exc_type, dj_exc_value, traceback)
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 213, in ensure_connection
self.connect()
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/backends/base/base.py", line 189, in connect
self.connection = self.get_new_connection(conn_params)
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/django/db/backends/postgresql/base.py", line 176, in get_new_connection
connection = Database.connect(**conn_params)
File "/home/ubuntu/sooky_env/local/lib/python2.7/site-packages/psycopg2/__init__.py", line 130, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
django.db.utils.OperationalError: FATAL: password authentication failed for user "ubuntu"
FATAL: password authentication failed for user "ubuntu"

Answer 1

Your settings are wrong.
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': '<db_name>',
'HOST': '<db_host>',
'USER': '<postgres_user>',
'PORT': '5432',
'PASSWORD': '<postgres_user_password>',
},
}
it's "USER" not "USERNAME"