Postgresql password authentication failed for user postgres

Question

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

User · Answer

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

User · Answer

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

User · Answer

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  gt  ALTER USER postgres with password  YourNewPassword

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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

User · Answer

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  lt username gt  sudo  The change will take effect the next time the user logs in  i  Now go to sudo vim  etc postgresql  lt your postgres version gt  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

User · Answer

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

User · Answer

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

User · Answer

Time flies  On version 12  I have to use  quot password quot  instead of  quot ident quot  here  local   all             postgres                                password  Connect without using the -h option

User · Answer

Edit the pg hba conf file  e g  with sudo emacs  etc postgresql 9 3 main pg hba conf  Change all authentication methods to trust  Change Unix Password for  postgres  user  Restart Server  Login with psql -h localhost -U postgres and use the just set Unix password  If it works you can re-set the pg hba conf file to the default values

User · Answer

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

User · Answer

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

User · Answer

I just wanted to add that you should also check if your password is expired   See Postgres password authentication fails for details

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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

User · Answer

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   -

User · Answer

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  quot user quot   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

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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

[postgresql] Postgresql: password authentication failed for user "postgres"

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