CODEWITHSUNDEEP
pythondjangopostgresql
Douglas da Dias Silva
Douglas da Dias Silva

Reputation: 1230

postgresql: FATAL: password authentication failed for user "douglas"

I am trying to migrate a DB from sqlite to postgresql...so I typed:

sudo -u postgres psql
postgres=# ALTER USER postgres WITH PASSWORD 'newpassword';

and the output returns ALTER ROLE

but when I type python manage.py migrate I receive always the same error:

django.db.utils.OperationalError: FATAL: password authentication failed for user "douglas"

This is the database sections of my settings.py.

# Old, using mysqlite
"""
DATABASES = {
    #'default': {
    #    'ENGINE': 'django.db.backends.sqlite3',
    #    'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    #}
    'default': dj_database_url.config(default='postgres://localhost:5432/postgres_db_name'),
}
"""

# New, using postgres
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'douglas_db',
        'USER': 'douglas',
        'PASSWORD': 'vamointer',
        'HOST': '127.0.0.1',
        'PORT': '5432',
    }
}

Note: When I run the 'ALTER USER postgres WITH PASSWORD' I put in the same password defined in the settings.py.

Upvotes: 33

Views: 77609

Answers (12)

Luke Lyu
Luke Lyu

Reputation: 71

If you encounter the error "django.db.utils.OperationalError: connection to server at "localhost" (::1), port 5432 failed: FATAL: password authentication failed for user "postgres", it might be because you haven't set a password for the "postgres" user. To resolve this issue, follow these steps:

  1. In pgAdmin, right-click on the "postgres" user under "Login/Group Roles."
  2. Select "Properties."
  3. Go to the "Definition" tab.
  4. Set a new password and click "Save."

Upvotes: 0

user12228212
user12228212

Reputation: 31

You can try this:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'telusko',
        'USER': 'postgres', # not USERNAME, that will cause an error.
        'PASSWORD': '1234',
        'HOST':'localhost',
    }
}

Upvotes: 3

Abdurrahman Saleh
Abdurrahman Saleh

Reputation: 1

Wanna do my part as a fellow developer here who got this issue too

You might be following a sometimes dubious "by the book guide" to set up PGSQL with Django. Some of the guides do not require us to write down the HOST and PORT in the DATABASES section. Like this :

DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.postgresql',
    'NAME': 'urdb',
    'USER': 'your_username',
    'PASSWORD': '1234',
    'HOST':'localhost',
    'PORT':''
}}

I fixed this by :

  • Check my actual host and port, in my case, the default port is 5433
  • Put 5433 in the PORT
DATABASES = {
'default': {
    'ENGINE': 'django.db.backends.postgresql',
    'NAME': 'urdb',
    'USER': 'your_username',
    'PASSWORD': '1234',
    'HOST':'localhost',
    'PORT':'5433'
}}

Et voila! No more authentication issues!

Don't expect your environment nor codes to know everything! :)

Upvotes: 0

Farhang Amaji
Farhang Amaji

Reputation: 973

I had not exactly the same problem cause mine was with docker-compose, django but mainly with postgres in which in steps of building django project (note deletion of database wasnt an issue) I couldnt migrate my database so by deleting data\db folder I attempted to solve it. for more information on my problem Django Postgres docker-compose connection error mainly failed: FATAL: password authentication failed for user foobar ERROR: 2

Upvotes: -1

Maria Morejon
Maria Morejon

Reputation: 23

For me it was as simple as using capital letters in my db and user name.

It seems that postgres automatically ignores case:

postgres=# CREATE USER MyProjectUser WITH PASSWORD 'password';

is then stored as:

postgres=# \du+
                                          List of roles
 Role name |                         Attributes                         | Member of | Description
-----------+------------------------------------------------------------+-----------+-------------
 myprojectuser |                                                        | {}        |
 postgres  | Superuser, Create role, Create DB, Replication, Bypass RLS | {}        |

So in my database, this:

DATABASES = {
    'default': {
        .
        .
        'USER': 'MyProjectUser',
        'PASSWORD': 'password',}}

wasn't recognized & threw password auth failure error.

Upvotes: 2

Amit
Amit

Reputation: 71

Try this for creating the user for Postgres

postgres=# create user username with encrypted password 'password';

Add permissions

postgres=# grant all on database db_name to username;

other useful commands might help

sudo -u postgres psql

\du+ #list of user

\l+ # list of DB

Credits to this article

Note: the database name and the username are always in lowercase, even if you create them with capitals.

Upvotes: 0

Arosh
Arosh

Reputation: 1

Another reason why this happens is if you have a conflicting version of postgres running. I had one running in docker and another on my system.

systemctl stop postgresql to stop the system version and purge it if you'd rather use only the docker version.

Upvotes: 0

Roksolanka Fedkovych
Roksolanka Fedkovych

Reputation: 115

It's also possible that your PostgreSQL server is not running. Please run next command, to check if postgres is running:

sudo service postgresql status

If not please run it, using:

sudo service postgresql start

Also, you can have wrong port in your settings. To check where Postgres is running use:

sudo netstat -plunt |grep postgres

And after update PORT in DATABASE config in Django settings

Upvotes: 2

Sarmad Gulzar
Sarmad Gulzar

Reputation: 146

In my case, I had to change

'ENGINE': 'django.db.backends.postgresql_psycopg2',

to

'ENGINE': 'django.db.backends.postgresql',

Hope it helps someone!

Upvotes: 3

Shadow
Shadow

Reputation: 9427

The SQL you are running does not match the user you are attempting to use.

You will need to create the user if it does not exist: 

CREATE USER douglas WITH PASSWORD 'vamointer';

or if it does exist, change that user's password instead.

ALTER USER douglas WITH PASSWORD 'vamointer';

Once you have done that you should have more luck. You may need to assign permissions to that user as well.

Upvotes: 28

HAL 9000
HAL 9000

Reputation: 179

Special characters in postgresql are converted to different characters while execution. Make sure you do not have special characters (#,$,etc..) in your password.

If you do, change the postgresql password as follows:

sudo -u postgresql psql
postgresql=#ALTER USER yourusername WITH PASSWORD 
'set_new_password_without_special_character';

Make sure you do not forget the ; at the end of postgresql command. Then run python manage.py and it should work!

Upvotes: 11

Harlin
Harlin

Reputation: 1139

If you are bone-headed like me and have used 'USERNAME' instead of 'USER' in your Django database configs in settings.py, make sure you change it to 'USER' else you will see this same error. Hope this helps someone like me down the road.

Upvotes: 14

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