I have a postgres 12.
I've set the password for user postgres as password and somehow after some time my application gets authentication failed for user "postgres".
Then I login with psql and change the password with ALTER USER ... command.
And then the cycle repeats itself.
I checked the table pg_user and there is null value on valuntil column.
I just ran into this same issue with the postgres user and a created user. After doing some testing I found out that by default postgres and my created user did not have a password expiry set and the password appeared as though it was changing and cause me to not be able to log into either account even after an hour since the previous password change.
Solution: After changing the expiry value to a future date the issues stopped.
I'm using PostgreSQL 13.3 with Ubuntu 20.
PostgreSQL doesn't randomly change your password.
Someone else is logging in and changing your password. Since your password is about the worst possible password, this would not be hard to do for anyone who can reach your box and can get past pg_hba.conf. Depending on your firewall and your pg_hba.conf, this could be anyone with internet access. Which is a lot of people.
Your quoted error message is incomplete. Did the message start with "password" which you stripped off? You can look in the server side log file to get more details on the failure than are sent to the unauthenticated client. For example:
FATAL: password authentication failed for user "postgres"
DETAIL: User "postgres" has no password assigned.
FATAL: password authentication failed for user "jjanes"
DETAIL: Password does not match for user "jjanes".
Related
I am new to this SQL stuff and I recently installed Postgres 14.3 on my windows machine as part of an online learning requirement. I created a database and a user to connect to the database in the following lines from the shell:
postgres=# create database staff;
postgres=# create user Naruto with encrypted password 'secret';
postgres=# grant all privileges on database staff to Naruto;
postgres=# \c staff Naruto;
password for user Naruto:
After inputting the password I get an error message like this
connection to server at "local host" (127.0.0.1), port 5432 failed: FATAL: password authentication failed for user "Naruto"
Previous connection kept
Whereas the video description from which I am taking tutorials didn't ask for a password prompt but it connected to the database straight up with the designated user.
I have tried numerous suggestions on stack overflow but still, no breakthrough in any way. I'd appreciate any hint because I haven't recorded any progress with my learning recently. Thanks!
The user you created is named "naruto", not "Naruto", because identifiers are case-folded when not inside double quotes. In the \c, however, it is not case folded because at that point is not an identifier, it is more like a command line argument.
Depending on the contents of pg_hba.conf, PostgreSQL might not tell you when you try to login as a nonexistent user. Instead it goes through the motions of authentication, even though authentication is doomed to fail. This is so that an attacker cannot determine which users exist by trying a bunch and looking at the error messages. The real reason for failure is published to the db server's log file, so if you had looked there you should have seen role "Naruto" does not exist.
If you want the user to have a capital letter, put double quotes around the name when you do the CREATE. Alternatively given that you already created the user without the cap, connect to it using the lower-case spelling. And either way, look in the servers log file when you run into problems.
I hope this might help someone in the future. All I had to do was fix the caps for the user I initially created as 'Naruto' and it got executed smoothly.
postgres=# create database staff;
postgres=# create user naruto with encrypted password 'secret';
postgres=# grant all privileges on database staff to naruto;
postgres=# \c staff naruto;
I'd like to learn how to use postgres, so I just installed it, set my password, and added the \bin and \lib directories to my system path. I then ran psql in the command line, typed the password that I just set when I was prompted, and now I receive this error:
psql: error: FATAL: password authentication failed for user "me"
I don't understand why that happened. Any ideas? I am using windows 10.
The windows installer asks you to specify the password for the super user named "postgres". But if you just type psql, you are trying to log in as the PostgreSQL which has the same name as your windows OS user. But that PostgreSQL user probably doesn't even exist, much less have the same password as you specified upon installation.
So the first time you log in, you have to tell it to log in as the initial superuser, with -U postgres. Once logged in, you can create a user named 'me' (create it with a password--possibly the same as the first password you assigned, although generally they would be different), and a database named 'me'. From them on, you could log in as this new user to this new database, just by typing psql and then giving the password when it asks.
In general, the initial user and the initial database are only used for maintenance operations. Other tasks should be done with the users and in the databases you set up after the first time you log in. This isn't "the law" of course, it is just "a good idea".
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 am using Oracle 11g client 32bit on all my servers and i have proceeded with all the dump imports the very same way I am doing here.
Firstly I create the user with default tablespace
Secondly I alter the user quota unlimited on tablespace
Thirdly I grant connect resource dba to the user.
Then I exit from Oracle and this is my import command
C:\Users\romit.poladiya>imp fajbdummy/fa#dmate file='E:\dump\fajblatest.dmp' full=Y;
I have always been doing this and I do not know why I have not been able to import this time. Please assist. Let me know if you require any more information
Thanking the team in advance,
Romit
ORA-01017: invalid username/password; logon denied
Cause: An invalid username or password was entered in an attempt to log on to Oracle. The username and password must be the same as was specified in a GRANT CONNECT statement. If the username and password are entered together, the format is: username/password.
Cure: Use the correct username & password. Check the system to make sure that the username exists, and set the password if necessary.
The following issue can be closed as I was able to do the tnsping but unfortunately my oracle went into an Idle Instance while I was connecting. Earlier it was not an issue and I have no idea whatever happened and the the oracle just went into Shutdown