I can't connect on postgresql.
when i go on pgadmin>server>postgresql, it asked me "please enter the password for the user 'postgres' to connect the server?
I have windows 10 and postgresql 14.
But I don't have this password.
What can I do?
The following worked for me.
Change METHOD of all rows in your pg_hba.conf file from scram-sha-256 to trust (C:\Program Files\PostgreSQL\14\data\pg_hba.conf). This will disable password for your DB.
Click on any database in postgresql to use Query Tool.
In Query Tool type ALTER USER postgres WITH PASSWORD 'User_password';
postgres is default username, execute it.
This way you can set up a password for your DB, after that go back to the first step and change it back from trust to scram-sha-256.
Related
So I forgot the password of the postgres user on my PostgreSQL server. I then changed all the md5 settings in the pg_hba.conf file to trust, restarted the server and then changed the password of the postgres user using ALTER USER postgres.... Now I changed the trust settings back to md5, restarted the server again, but when I now want to perform psql -U postgres it immediately returns an error:
psql: FATAL: password authentication failed for user "postgres"
password retrieved from file "/root/.pgpass"
without asking me to enter any password. The .pgpass file has the following line in it:
*:*:*:postgres:SOME_HASH
EDIT:
Somehow this only appears when logging in as root to my server... With my other user it works just fine...
The immediate solution is to remove the .pgpass file that contains the wrong password. If you didn't create that file yourself, odds are that pgAdmin did that for you when you told it to save the password.
If you specify '-W', then psql will prompt you for a password and ignore the .pgpass file. But why not fix .pgpass, or if you aren't using it, then remove it?
I'm using PostgreSQL for the first time and I am not familiar with it. When I start pgadmin and enter master password and when I want to connect to postresql and again enter same password following error pops up:
could not connect to server: could not initiate GSSAPI security context: The operation or option is not available
could not initiate GSSAPI security context: Credential for asked mech-type mech not found in the credential handle
FATAL: password authentication failed for user "postgres"
Whats the problem here?
I just had the same issue and below is how I solved it. Because you don't have a default password for the user 'postgres', you will need to set one first, like this :
Connect to the terminal as the user 'postgres' with the current admin credential (thanks sudo)
sudo -u postgres -i
Connect to the database 'postgres'
psql postgres
(optional) If the psql command is not found, you can the PostgreSQL bin path to your $PATH like this :
export PATH=$PATH:THE_PATH_TO_POSTGRESQL_BIN_FOLDER
# Example : export PATH=$PATH:/Library/PostgreSQL/12/bin
Change the password of the user 'postgres'
--- Do not forget to my_password with the desired password
ALTER USER postgres PASSWORD 'my_password';
In the pgAdmin windows, try to connect with this new password, it should work.
It is ridiculous but my solution after many trial was very very simple.
Problem seems that password is not match or connection problem. So, first make sure your password is definitely correct. You might think you enter exact same but it might be not. I tried to wrote a password to somewhere else that i can see it is correct.Then, i copied that and paste it to setup where you put your new password. Ofcourse you have to remove postgre completely for this to try.
When setup is completed, if you tried and didn't work again, then delete Postgre server and create new one. Just enter server name, connection address and password and save. if this one also not work successfully,maybe you should check if the chosen port number is alive or not for postgre server.
Sorry for that answer is not visual and some english mistakes. I just wanted to wrote really fast. Good luck :)
I tried to create server it it says:
Unable to connect to server:
FATAL: password authentication failed for user "postgres"
https://prnt.sc/ric1vl
What operating system are you using? maybe you need to change the password of the postgres user. In my case I use Debian GNU Linux, to change the password of the postgres user, I do it in the following way:
root#alpha:~$ passwd postgres
and then I enter a new password for the user.
Could you also verify that the postgres user has permission to connect to the server? To do this, you can check the pg_hba.config file in the PostgreSQL. installation directory.
root#alpha:~$ nano /etc/postgresql/11/main/pg_hba.conf
By default PostgreSQL, only allows connections from local addresses (localhost)
Make sure to have your local postgres server running
Hit pgadmin tool connect to server and to create database
Right-click on the server button to your left, select create then server, insert name of the server, make sure it is as descriptive as possible, that way you can find your way back to if you remember
Move to connection tab; host name is the server where the SQL database is running, most likely you will be starting with your machine as database(db), insert localhost or 127.0.0.1.
leave default port as it is '5432'
maintenance db leave as 'postgres'
username leave as default 'postgres'
password : same as you registered with during installation
To your left, you should see the database under 'server', you should see the postgres default created underlink databases.
Right click on the databases button and select create, then database, insert your descriptive database name, click save.
Click on your new database, roll down, highlight Schema, go to Tools, select Query Tool...
You can go ahead to create or import tables as you deem fit.
EMPHASIS SHOULD BE ON THE PASSWORD, IT MUST BE SAME AS USED DURING INSTALLATION
Starting pgAdmin III on kubuntu with stored password asks for password every time connecting to database giving error "Error connecting to the server: fe_sendauth: no password supplied". It ignores checkbox in store password field.
I found reason for this in Postgresql mailing lists. Problem is when file /home/user/.pgpass has permisions more than u=rw 0600 pgAdmin ignores the file. Changing permisions for file resolves problem.
I am trying to set my local postgresql so it does not have a password. I understand that this has to be done in the pg_hba.conf file and to acceess that file I have to be a postgres user. But to be a postgres user, I have to login with su postgres and enter the password that I don't have.
Any solution to this (I am on OSX)?
You're confusing several different concepts about the security model.
There is a postgres operating system user, which the PostgreSQL server runs as in order to isolate its data files and to limit damage in case of a security breach or application bug. PostgreSQL won't run as root for security. This user doesn't generally have a password, but you can change to it via the root account using sudo - you can sudo to this user with something like sudo -i -u postgres.
There is also a postgres database user, the default database superuser. This user doesn't generally have a password by default, but pg_hba.conf allows the postgres operating system user to connect as the postgres PostgreSQL user using peer authentication.
If you want you can change the configuration so that you use a password for the postgres database user, so you can psql -U postgres from any system user account:
ALTER USER postgres WITH ENCRYPTED PASSWORD 'blahblah';
Edit pg_hba.conf ("hba" is "host-based authentication") to use md5 authentication for local and host connections.
Re-start or re-load PostgreSQL
Similarly, if you want to allow any system user to connect as any database user without a password, you must modify pg_hba.conf and set trust as the authentication mode for local and host connection types. Please only use trust authentication for testing.
To learn more, see the client authentication chapter in the PostgreSQL documentation.