FATAL: password authentication failed for user "postgres" (postgresql 11 with pgAdmin 4)
PostgresqlPgadmin 4Postgresql 11Postgresql Problem Overview
I recently installed Postgresql 11, during the installation, there's no step to put password and username for Postgres. Now in pgAdmin 4, I wanted to connect the database to server and it's asking me to input password, and I haven't put any in the first place. Any one knows what's going on. Thank you!
Postgresql Solutions
Solution 1 - Postgresql
The default authentication mode for PostgreSQL is set to ident.
You can access your pgpass.conf via pgAdmin -> Files -> open pgpass.conf
That will give you the path of pgpass.conf
at the bottom of the window (official documentation).
After knowing the location, you can open this file and edit it to your liking.
If that doesn't work, you can:
-
Find your
pg_hba.conf
, usually located underC:\Program Files\PostgreSQL\9.1\data\pg_hba.conf
-
If necessary, set the permissions on it so that you can modify it. Your user account might not be able to do so until you use the security tab in the properties dialog to give yourself that right by using an admin override.
-
Alternately, find
notepad
ornotepad++
in your start menu, right click, choose "Run as administrator", then useFile->Open
to openpg_hba.conf
that way. -
Edit it to set the "host" line for user "postgres" on host "127.0.0.1/32" to "trust". You can add the line if it isn't there; just insert
host all postgres 127.0.0.1/32 trust
before any other lines. (You can ignore comments, lines beginning with #). -
Restart the PostgreSQL service from the Services control panel (
start->run->services.msc
) -
Connect using
psql
or pgAdmin4 or whatever you prefer -
Run
ALTER USER postgres PASSWORD 'fooBarEatsBarFoodBareFoot'
-
Remove the line you added to pg_hba.conf or change it back
-
Restart PostgreSQL again to bring the changes to effect.
Here is an example of the pg_hba.conf
file (METHOD is already set to trust):
# TYPE DATABASE USER ADDRESS METHOD
# IPv4 local connections:
host all all 127.0.0.1/32 trust
# IPv6 local connections:
host all all ::1/128 trust
NOTE: Remember to change the METHOD back to md5
or other auth-methods listed here after changing your password (as stated above).
Solution 2 - Postgresql
For Windows variant - I too experienced this nasty bug because of pgAdmin for my Windows x64 install of version 9.2. It left my production paralyzed.
In folder C:\Program Files\PostgreSQL\9.2\data or C:\Program Files (x86)\PostgreSQL\9.x\data, you'll find the pg_hba.conf text file.
Find the following lines:
# TYPE DATABASE USER ADDRESS METHOD
# IPv4 local connections:
host all all 127.0.0.1/32 md5
# IPv6 local connections:
host all all ::1/128 md5
and change METHOD md5 to "trust" like this:
# TYPE DATABASE USER ADDRESS METHOD
# IPv4 local connections:
host all all 127.0.0.1/32 trust
# IPv6 local connections:
host all all ::1/128 trust
From Windows>Run type "services.msc" and enter find the right PostgreSQL instance and restart it.
Your DB security is now blown wide open! Heed the warning to return it back to md5 after changing the user password expiry time to say year 2099 for all the relevant users.
Solution 3 - Postgresql
Change the password of default use
ALTER USER postgres WITH PASSWORD 'new_password';
Solution 4 - Postgresql
Note: CREATE USER is the same as CREATE ROLE except that it implies LOGIN.
$ psql postgres
postgres=# create user postgres with superuser password 'postgres';
Solution 5 - Postgresql
After successfully changing the master password
If you get the same error even after following the master password reset steps Open your command prompt and execute
psql -U postgres
It will ask you for the password, enter the new password which you set now parallelly open SQL shell(psql) and try again with the new password
Solution 6 - Postgresql
try using psql -U postgres
if have put password while installing this is command where you have to use that. Thank you :)
Solution 7 - Postgresql
trust
Option 1: If you use Better change only postgres to trust
in the pg_hba.conf, then access your db with postgres super user and add other users and passwords with the power of the postgres super user, then change all other peer
to md5
.
The steps: In the pg_hba.conf, change
local postgres
totrust
- do not change
local all
totrust
, - instead change
local all
frompeer
tomd5
- which means that a right password is enough to login.
See this solution in detail at the second answer of 'Getting error: Peer authentication failed for user "postgres", when trying to get pgsql working with rails'.
md5
, no trust
needed (recommended)
Option 2: Use This way is even easier because you will need to change the pg_hba.conf only once:
- Change any local user from
peer
tomd5
, usually:
- Change
local postgres
frompeer
tomd5
- Change
local all
frompeer
tomd5
-
Add a postgres pw with the power of your Linux pw only:
sudo su postgres psql (or psql -p <port> if you have more than one PostgreSQL) \password \q
Solution 8 - Postgresql
I have tried all the above mentioned solutions, trust me northing worked! I have resolved the issue by using following commands
-
psql -U default
-
\password
Enter new password:
Enter it again:
my username is : default
This worked perfectly for me.
Solution 9 - Postgresql
For Linux user try this
//CHECK POSTGRES IS WORKING OR NOT
sudo systemctl status postgresql
//THIS WILL ACCEPT PORTS
sudo pg_isready
sudo su postgres
//NAVIGATE TO SQL TERMINAL / BASH
psql
//CREATE A NEW USER WITH PASSWORD
CREATE USER shayon WITH PASSWORD 'shayon';
Solution 10 - Postgresql
I solved this problem by changing peer to trust in the file "pg_hba.conf" at local postgres then I restarted the postgres service with the command:
sudo service postgresql restart
That's it.
Solution 11 - Postgresql
I know this is an old question, but I had the same problem, e.g. no dialog for setting password for Postgres during installation with Postgresql 11.
Instead of doing all the file manipulations suggested in the other answers, I deleted Postgresql 11 and installed Postgresql 12, where I was prompted for setting password during installation.
Solution 12 - Postgresql
I currently had a headhache solving this case. A friend helped me I decided to post my solution here.
- Open pg_hba.conf in any text editor (you can find this file in your postgres instalation folder > data);
- 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.
Solution 13 - Postgresql
Follow below stepsif you are using pgAdmin4 and facing error in updating password :
1] Open file "pg_hba.conf" and find "IPv4 local connections"
2] See the value under "Method" column, it must be set to "md5" becase you selected it while installing.
3] Make "md5" value blank and save the file. Restart pgAdmin4 application.
4] Now again set the value back to "md5" and input your password in pgAdmin application.
You should be successfully able to do it.
Solution 14 - Postgresql
- Loggin to PgAdmin4
Go to
- Object > Create > Login/Group Role
- Create the "username" that was named in the psql terminal
- Create password
- Give it all the rights
- Save
- try the password immediately in the psql terminal.
It worked for me.
Hope this works for you.
Solution 15 - Postgresql
You can use the "superuser" password for the first time.
After that you can use Object > Create > Login/Group Role to change the password for the "postgres" user.
Solution 16 - Postgresql
For those of you who got this error and NONE of these answers helped, I may not have StackOverflow fish for you, but I'll teach you how to fish!
You likely don't have the correct order of lines in the pg_hba.conf file. If you read this PostgreSQL documentation link below, it says this error can be thrown if "no matching entry is found". However, that is NOT always true! Documentation is written by humans and humans make mistakes.
https://www.postgresql.org/docs/current/client-authentication-problems.html
The truth is that a line further up might take precedence, is qualifying and is forcing you to use a password stored in PostgreSQL rather than delegated authentication or some other method. If you are not specifying a password stored in PostgreSQL, then you do not need the LOGIN role attribute. Put a line at the very top of this list with your specific user, authentication protocol, network details and other criteria. Also, many may think that most computers use IPv4. Try IPv6 and you'll be surprised. Once you know the very specific criteria of your issue and place a line at the top, then you have established the ONLY RELIABLE WAY to troubleshoot these pg_hba.conf issues without source code debugging!
Another helpful trick is to create a crapload of Server entries in pg_admin (SQL IDE for PostgreSQL) with all of your users and authentication protocols for testing. When you test different scenarios, you'll instantly know which ones fail.
Also, whenever you change this file, restart the PostgreSQL service, before testing the user.
You're welcome my friend. :)
Solution 17 - Postgresql
windown 11 - postgres 14
- open pgAdmin4 - click servers
- right-click on your windows user name rule, e.g: MyUserName.
- definition tab - enter password, click save.
- open/re-open terminal
- run:
psql "postgres:///"
if you get "MyName database doesn't exist" you're good to go
Solution 18 - Postgresql
This particular situation I'm about to mention probably doesn't come up very often, but I was getting this error as well. After looking into it, it was because I had a local postgres instance listening on port 5433, and I was trying to set up a Kubernetes tunnel to a remote PG instance mapped to local port 5433 as well. It turns out the command I was running was attempting to connect to the local instance rather than the remote instance. When I temporarily stopped the local instance, I was able to connect to the remote instance through the tunnel without changing the psql
command I was using.