I installed Postgres with this command
sudo apt-get install postgresql postgresql-client postgresql-contrib libpq-dev
Using psql --version on terminal I get psql (PostgreSQL) 9.3.4
then I installed pgadmin with
sudo apt-get install pgadmin3
Later I opened the UI and create the server with this information
but this error appear
how can I fix it?
Modify password for role postgres:
sudo -u postgres psql postgres
alter user postgres with password 'postgres';
Now connect to pgadmin using username postgres and password postgres
Now you can create roles & databases using pgAdmin
How to change PostgreSQL user password?
You haven't created a user db. If its just a fresh install, the default user is postgres and the password should be blank. After you access it, you can create the users you need.
It helps me:
1. Open the file pg_hba.conf
sudo nano /etc/postgresql/9.x/main/pg_hba.conf
and change this line:
Database administrative login by Unix domain socket
local all postgres md5
to
Database administrative login by Unix domain socket
local all postgres trust
Restart the server
sudo service postgresql restart
Login into psql and set password
psql -U postgres
ALTER USER postgres with password 'new password';
Again open the file pg_hba.conf and change this line:
Database administrative login by Unix domain socket
local all postgres trust
to
Database administrative login by Unix domain socket
local all postgres md5
Restart the server
sudo service postgresql restart
It works.
Helpful links
1: PostgreSQL (from ubuntu.com)
Create a user first. You must do this as user postgres. Because the postgres system account has no password assigned, you can either set a password first, or you go like this:
sudo /bin/bash
# you should be root now
su postgres
# you are postgres now
createuser --interactive
and the programm will prompt you.
First you should change the password using terminal.
(username is postgres)
postgres=# \password postgres
Then you will be prompted to enter the password and confirm it.
Now you will be able to connect using pgadmin with the new password.
if you open the psql console in a terminal window, by typing
$ psql
you're super user username will be shown before the =#, for example:
elisechant=#$
That will be the user name you should use for localhost.
I have installed PostgreSQL 8.4, Postgres client and Pgadmin 3. Authentication failed for user "postgres" for both console client and Pgadmin. I have typed user as "postgres" and password "postgres", because it worked before. But now authentication is failed. I did it before a couple of times without this problem. What should I do? And what happens?
psql -U postgres -h localhost -W
Password for user postgres:
psql: FATAL: password authentication failed for user "postgres"
FATAL: password authentication failed for user "postgres"
If I remember correctly the user postgres has no DB password set on Ubuntu by default. That means, that you can login to that account only by using the postgres OS user account.
Assuming, that you have root access on the box you can do:
sudo -u postgres psql
If that fails with a database "postgres" does not exists error, then you are most likely not on a Ubuntu or Debian server :-) In this case simply add template1 to the command:
sudo -u postgres psql template1
If any of those commands fail with an error psql: FATAL: password authentication failed for user "postgres" then check the file /etc/postgresql/8.4/main/pg_hba.conf: There must be a line like this as the first non-comment line:
local all postgres ident
For newer versions of PostgreSQL ident actually might be peer. That's OK also.
Inside the psql shell you can give the DB user postgres a password:
ALTER USER postgres PASSWORD 'newPassword';
You can leave the psql shell by typing CtrlD or with the command \q.
Now you should be able to give pgAdmin a valid password for the DB superuser and it will be happy too. :-)
The response of staff is correct, but if you want to further automate can do:
$ sudo -u postgres psql -c "ALTER USER postgres PASSWORD 'postgres';"
Done! You saved User = postgres and password = postgres.
If you do not have a password for the User postgres ubuntu do:
$ sudo passwd postgres
This was frustrating, most of the above answers are correct but they fail to mention you have to restart the database service before the changes in the pg_hba.conf file will take affect.
so if you make the changes as mentioned above:
local all postgres ident
then restart as root ( on centos its something like service service postgresql-9.2 restart )
now you should be able to access the db as the user postgres
$psql
psql (9.2.4)
Type "help" for help.
postgres=#
Hope this adds info for new postgres users
Edit the pg_hba.conf file, for Debian on /etc/postgresql/9.3/main/pg_hba.conf and for Red Hat/IBM derivates at /var/lib/pgsql/9.4/data/pg_hba.conf
Change all authentication methods to trust.
Change Linux Password for postgres user.
Restart Server.
Login with psql -h localhost -U postgres and use the just set Unix password.
If it works you should re-set the pg_hba.conf file to values with md5 or ident methods and restart.
For those who are using it first time and have no information regarding what the password is they can follow the below steps(assuming you are on ubuntu):
Open the file pg_hba.conf in /etc/postgresql/9.x/main
sudo vi pg_hba.conf
2.edit the below line
local all postgres peer
to
local all postgres trust
Restart the server
sudo service postgresql restart
Finally you can login without need of a password as shown in the figure
Ref here for more info
When you install postgresql no password is set for user postgres, you have to explicitly set it on Unix by using the command:
sudo passwd postgres
It will ask your sudo password and then promt you for new postgres user password.
Source
Try to not use the -W parameter and leave the password in blank. Sometimes the user is created with no-password.
If that doesn't work reset the password. There are several ways to do it, but this works on many systems:
$ su root
$ su postgres
$ psql -h localhost
> ALTER USER postgres with password 'YourNewPassword';
As a rule of thumb: YOU SHOULD NEVER EVER SET A PASSWORD FOR THE POSTGRES USER.
If you need a superuser access from pgAdmin, make another superuser. That way, if the credentials for that superuser is compromised, you can always ssh into the actual database host and manually delete the superuser using
sudo -u postgres -c "DROP ROLE superuser;"
Once you are in your postgres shell, Enter this command
postgres=# \password postgres
After entering this command you will be prompted to set your password , just set the password and then try.
If you are trying to login postgres shell as postgres user, then you can use following commands.
switch to postgres user
# su - postgres
login to psql
# psql
Hope that helps
Ancient thread, but I wasted half a day dealing with this in 2020, so this might help someone: Double-check your postgres port (on Ubuntu, it's in /etc/postgresql/9.5/main/postgresql.conf). The psql client defaults to using port 5432, BUT in my case, the server was running on port 5433. The solution was to specify the -p option in psql (e.g. psql --host=localhost --username=user -p 5433 mydatabase).
If you leave off the --host parameter, psql will connect via a socket, which worked in my case, but my Golang app (which uses TCP/IP) did not. Unfortunately, the error message was password authentication failed for user "user", which was misleading. The fix was to use a url connection string with the port (e.g. postgres://user:password#localhost:5433/mydatabase).
My setup was Ubuntu 18.04 on Digital Ocean, with postgres 9.5 installed via apt-get, so not sure why this happened. Hope this saves you some time.
I faced the same error on Windows 10. In my case, when I setup the Postgres, my username was postgres by default.
But when I ran the command psql, it as showing my the username as jitender which is my machine name, and I don't know why this username had been setup.
Anyway to solved it, I did the following steps:
Run the command psql --help
In the output, look for the Connection Option, here you will see your default user, in my case it as jitender.
You will also get the command to set the anoter username, which should be psql --username postgres. You set the username whatever you require, and that's all, problem got solved.
If you see error
FATAL: password authentication failed for user "postgres"
and you are sure that your password is correct, check that the password has any special characters, especially "%" or slashes.
In my case, it was "%" in the password string. After removing this symbol, everything works fine.
Here are some combinations which I tried to login:
# login via user foo
psql -Ufoo -h localhost
sudo -u postgres psql postgres
# user foo login to postgres db
psql -Ufoo -h localhost -d postgres
Time flies!
On version 12, I have to use "password" instead of "ident" here:
local all postgres password
Connect without using the -h option.
First of All password crate
ALTER USER postgres with encrypted password 'postgres';
then service restart:
sudo systemctl restart postgresql.service
End.
Follow these steps :
sudo -u postgres -i
psql
\password postgres
After that, enter your password twice.
Then use that password in the pgAdmin4.
I was also faced this issue while login the postgres. I was followed the below steps and able to login with postgres and pgadmin.
Step1: Open Postgres using terminal.
sudo su postgres
Step2: Open psql.
psql
Step3: Reset the password of user
ALTER USER user_name WITH PASSWORD 'new_password';
Step4: Give the permission on database to user.
GRANT ALL PRIVILEGES ON DATABASE my_database TO db_user;
I just wanted to add that you should also check if your password is expired.
See Postgres password authentication fails for details.
In my case, Ubuntu 20.04 Postgresql 12 was using the wrong port.
I've checked /etc/postgresql/12/main/postgresql.conf and realized it was 5433 instead of 5432.
The answer is #diego
I want to add some explanations of how I fixed error and I hope it will help other folks:
ERROR: password authentication failed for user "postgres"
On Window
Make sure you download Postgres software, install it, create and confirm password
and make sure its not complicated with some symbols and characters.
Open window, click SQL Shell (PSQL) and access it and create database
Create connection string like
postgres://postgres:your_password#localhost:port/your_database
On WSL
Follow Microsoft documentation
After successful installation
// Open postgres
su postgres
// Type psql and hit enter
psql
// Create a user postgres if not exist or any other user you want
CREATE USER your_user_db WITH PASSWORD 'match_password_with_db_password';
// Give user password same as the one you set up for postgres db
ALTER USER your_user_db WITH PASSWORD 'match_password_with_db_password';
// Restart the server
sudo service postgresql restart
i had a similar problem.
Ubuntu was left me log in in console with any password for superuser.
Except when i connected with -h localhost in psql line command.
I Observed too that "localhost:8080/MyJSPSiteLogIn" - showed: Fatal: autentication error with user "user".
pg_hba.conf was ok.
I noted had two versions of postgres running in the same service.
Solved - uninstalling inutil version.
I had faced similar issue.
While accessing any database I was getting below prompt after updating password
"password authentication failed for user “postgres”" in PGAdmin
Solution:
Shut down postgres server
Re-run pgadmin
pgadmin will ask for password.
Please enter current password of mentioned user
Hope it will resolve your issue
This happens due to caching.
When you run, php artisan config:cache, it will cache the configuration files. Whenever things get change, you need to keep running it to update the cache files. But, it won't cache if you never run that command.
This is OK for production, since config don't change that often. But during staging or dev, you can just disable caching by clearing the cache and don't run the cache command
So, just run php artisan config:clear, and don't run the command previously to avoid caching.
Check original post
Password authentication failed error on running laravel migration
In my case, its Password was longer than 100 characters. Setting it to a smaller character password worked.
Actually I am wondering is there a reference somewhere to that.
Please remember if you have two versions of Postgres installed you need to Uninstall one of them, in my case on MacOS I had one version installed via .dmg and one via brew.
What worked for me was to uninstall the one installed via .dmg using the following steps
Go to /Library/PostgreSQL/13.
Open uninstall-postgres.app.
then try
psql postgres
it should work.
Answer given is almost correct just missing some pointers which i'll be taking care of in my solution
First make sure your user have a sudo access if not you can use the below command to add your user as sudo user :-
sudo adduser <username> sudo
The change will take effect the next time the user logs in.
i) Now go to sudo vim /etc/postgresql/<your_postgres_version>/main/pg_hba.conf file and look for line that says :
local all postgres md5 #peer
and comment that. Just below that line there must be a commented line that says:
local all postgres peer
or for older versions it'll be :-
local all postgres ident
Uncomment that line.
ii) Now restart the postgres by using any of these commands :-
sudo /etc/init.d/postgresql restart
OR
sudo service postgresql restart
iii) Now you can simply log into postgres using the following command :
sudo -u postgres psql
iv) once you're in you can create any operation you want to in my case i wanted to create a new database you can do the same using below command :
CREATE DATABASE airflow_replica;
In my case it was so simple! I was taken error in application JAVA Spring because I needed remember the Database Superuser, it is showed during the install process PostgreSQL, in my case the datasource would be postgres. So, I added correctly the name and it works!
Open pg_hba.conf in any text editor (you can find this file in your postgres instalation folder);
Change all the methods fields to trust (meaning you don't need a password for postgre);
Run in your console this comand:
"alter user postgres with password '[my password]';" | psql -U postgres
(meaning to alter some user password for [my password] for the user as parameter -U postgres)
Et voilà (don't forget to change back the method from trust for the one that should be best for you)
I hope this help someone someday.
I hope this will help you short of time.
You can change the password of postgres sql by using bellow command.
Command
sudo -u postgres psql
And next you can update the password
Command
Alter user postgres password 'YOUR_NEW_PASSWORD';
I always have to give the command like sudo -u postgres psql in order to login into Postgres console. What do I have to in order to login into postgres like sudo psql or psql
The environment I am working on is Ubuntu Linux 12.04
Thanks in advance.
It's normal that after the installation, only the postgres user is able to do anything with the database server. The installer can't assume that we'd want to open access to anyone else.
To give yourself access as a casual user, assuming as an example that your login name is joe (your normal, non-priviledged user), you just need to create a corresponding user and database:
Inside psql as the postgres administrator (with sudo -u postgres psql), issue:
CREATE USER joe;
CREATE DATABASE joe OWNER joe;
After that, when issuing psql at the shell prompt, it will connect by default to your own database with your username. You no longer have to sudo to postgres until you need to issue other administrator commands.
Your psql is in /usr/bin/psql. You shouldn't need to use sudo unless your permissions are wrong, or unless your link is wrong. (In later versions of PostgreSQL, /usr/bin/psql is a symbolic link to the executable. I don't know whether that's true in 8.4. On my home computer, it links to /usr/share/postgresql-common/pg_wrapper.)
The full skeleton syntax for psql is
psql -U username -h hostname -p portnumber database_name
So, for example, when I connect to my scratch database (named "sandbox"), I do it like this.
$ psql -U postgres -h localhost -p 5432 sandbox
You would substitute
your database username (which must already exist, and which isn't necessarily the same as your network/computer username),
your hostname (but "localhost" is probably right for a local install of PostgreSQL),
the port PostgreSQL is listening on (but 5432 is probably right; it's the default), and
your database name.
Would
psql -U psql
work for you?
EDIT:
I though you would mind about sudo.
If your problem is rather typing -U <user>, you could also set the environment variable PGUSER. This could also be done in your shell's logon script, so that it will always be set.
The other enviroment variables of interest might be PGDATABASE, PGHOST, PGPORT.
I have a fresh ubuntu 10.10 install with all updates and postgresql 8.4
In order for postgresql to accept login+password connections i have configured it via:
sudo su postgres
psql
ALTER USER postgres WITH PASSWORD 'password';
CREATE DATABASE myapp;
\q
exit
sudo vi /etc/postgresql/8.4/main/pg_hba.conf
change "local all all indent" to "local all all trust"
But, surprisingly, this is not working! The command
psql -U postgres password
Evaluates with error:
psql: FATAL: Ident authentication failed for user "postgres"
Any hints how i can make the psql -U to work?
It is probably a good idea to leave the "postgres" user with ident authentication. By default I believe Ubuntu uses the "postgres" user to perform upgrades, backups, etc, and that requires that it is able to login without a specified password.
I recommend creating another user (probably with your own username) and giving it admin privileges as well. Then you can use that user with passwords on local connections.
Here is what the relevant parts of my pg_hba.conf look like:
# allow postgres user to use "ident" authentication on Unix sockets
# (as per recent comments, omit "sameuser" if on postgres 8.4 or later)
local all postgres ident sameuser
# allow all other users to use "md5" authentication on Unix sockets
local all all md5
# for users connected via local IPv4 or IPv6 connections, always require md5
host all all 127.0.0.1/32 md5
host all all ::1/128 md5
Also note that psql -U postgres password will not do what you want. The password should never be specified on the commandline. That will try to login as user "postgres" to a database named "password".
You should use psql -U postgres myapp instead. Postgres will automatically prompt you for a password, if it is configured properly to require one.
In case we want the password be filled-in automatically, place it in $HOME/.pgpass file
I think your pg_ident.conf file is misconfigured. Also, have you tried
psql -U postgres -W
Another thing that can cause this is expired credentials. I don't think this happened in version 8, but in version 9 when you create a new role in pgadmin, it is created in an expired state and you need to change or clear the role's expiration date before you will be able to login with it.
You may find it helpful to create the database's user and schema in PostgreSQL:
Log into PostgreSQL from the postgres user
$ sudo -u postgres psql postgres
Once in, create the user and database
CREATE ROLE myuser LOGIN PASSWORD 'mypass';
CREATE DATABASE mydatabase WITH OWNER = myuser;
Log into PostgreSQL from the new user account
$ psql -h localhost -d mydatabase -U myuser -p <port>