How to change PostgreSQL user password?

Question

How do I change the password for PostgreSQL user?

Answer 1

For password less login:

sudo -u user_name psql db_name

To reset the password if you have forgotten:

ALTER USER user_name WITH PASSWORD 'new_password';

Answer 2

Then type:

$ sudo -u postgres psql

Then:

\password postgres

Then to quit psql:

\q

If that does not work, reconfigure authentication.

Edit /etc/postgresql/9.1/main/pg_hba.conf (path will differ) and change:

    local   all             all                                     peer

to:

    local   all             all                                     md5

Then restart the server:

$ sudo service postgresql restart

Answer 3

You can and should have the users's password encrypted:

ALTER USER username WITH ENCRYPTED PASSWORD 'password';

Answer 4

I believe the best way to change the password is simply to use:

\password

in the Postgres console.

Source:

Caution must be exercised when specifying an unencrypted password with this command. The password will be transmitted to the server in cleartext, and it might also be logged in the client's command history or the server log. psql contains a command \password that can be used to change a role's password without exposing the cleartext password.

from https://www.postgresql.org/docs/9.0/static/sql-alterrole.html.

Answer 5

To change password using Linux command line, use:

sudo -u <user_name> psql -c "ALTER USER <user_name> PASSWORD '<new_password>';"

Answer 6

Go to your Postgresql Config and Edit pg_hba.conf

sudo vim /etc/postgresql/9.3/main/pg_hba.conf

Then 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                                peer

then Restart the PostgreSQL service via SUDO command then

psql -U postgres

You will be now entered and will See the Postgresql terminal

then enter

\password

and enter the NEW Password for Postgres default user, After Successfully changing the Password again go to the pg_hba.conf and revert the change to "md5"

now you will be logged in as

psql -U postgres

with your new Password.

Let me know if you all find any issue in it.

Answer 7

This was the first result on google, when I was looking how to rename a user, so:

ALTER USER <username> WITH PASSWORD '<new_password>';  -- change password
ALTER USER <old_username> RENAME TO <new_username>;    -- rename user

A couple of other commands helpful for user management:

CREATE USER <username> PASSWORD '<password>' IN GROUP <group>;
DROP USER <username>;

Move user to another group

ALTER GROUP <old_group> DROP USER <username>;
ALTER GROUP <new_group> ADD USER <username>;

Answer 8

Configuration that I've got on my server was customized a lot and I managed to change password only after I set trust authentication in the pg_hba.conf file:

local   all   all   trust

Don't forget to change this back to password or md5

Answer 9

To request a new password for the postgres user (without showing it in the command):

sudo -u postgres psql -c "\password"

Answer 10

For my case on Ubuntu 14.04 installed with postgres 10.3. I need to follow the following steps

• su - postgres to switch user to postgres
• psql to enter postgres shell
• \password then enter your password
• \q to quit the shell session

• Then you switch back to root by executing exit and configure your pg_hba.conf (mine is at /etc/postgresql/10/main/pg_hba.conf) by making sure you have the following line

  local all postgres md5

• Restart your postgres service by service postgresql restart
• Now switch to postgres user and enter postgres shell again. It will prompt you with password.

Answer 11

To Change Password

 sudo -u postgres psql

then

\password postgres

now enter New Password and Confirm

then \q to exit

Answer 12

use this:

\password

enter the new password you want for that user and then confirm it. If you don't remember the password and you want to change it, you can log in as postgres and then use this:

ALTER USER 'the username' WITH PASSWORD 'the new password';