Как изменить пароль пользователя postgres linux - Исправление ошибок и поиск оптимальных решений проблем

How do I change the password for a PostgreSQL user?

asked Oct 4, 2012 at 5:45

To log in without a password:

sudo -u user_name psql db_name

To reset the password if you have forgotten:

ALTER USER user_name WITH PASSWORD 'new_password';

rmtheis

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answered Oct 4, 2012 at 5:55

solaimuruganvsolaimuruganv

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To change the PostgreSQL user’s password, follow these steps:

Then in the psql console, change the password and quit:

postgres=# password postgres
Enter new password: <new-password>
postgres=# q

Or using a query:

ALTER USER postgres PASSWORD '<new-password>';

Or in one line

sudo -u postgres psql -c "ALTER USER postgres PASSWORD '<new-password>';"

Note:

If that does not work, reconfigure authentication by editing /etc/postgresql/9.1/main/pg_hba.conf (the path will differ) and change:

local     all         all             peer # change this to md5

local     all         all             md5 # like this

Then restart the server:

sudo service postgresql restart

answered Oct 4, 2012 at 5:50

Clint BugsClint Bugs

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You can and should have the users’ password encrypted:

ALTER USER username WITH ENCRYPTED PASSWORD 'password';

answered Feb 21, 2015 at 8:58

yglodtyglodt

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

password

in the Postgres console.

Per ALTER USER documentation:

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.

Note: ALTER USER is an alias for ALTER ROLE

xlm

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answered Aug 30, 2017 at 16:55

Viktor NordlingViktor Nordling

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To change the password using the Linux command line, use:

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

answered May 25, 2015 at 23:14

Vajira LasanthaVajira Lasantha

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To the change password:

 sudo -u postgres psql

Then

password postgres

Now enter the new password and confirm.

Then q to exit.

answered Jun 29, 2019 at 19:09

Akitha_MJAkitha_MJ

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Go to your PostgreSQL configuration and edit file 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 the ‘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 the PostgreSQL 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.

answered Oct 9, 2014 at 14:03

Setting up a password for the postgres role

sudo -u postgres psql

You will get a prompt like the following:

postgres=#

Change password to PostgreSQL for user postgres

ALTER USER postgres WITH ENCRYPTED PASSWORD 'postgres';

You will get something as follows:

ALTER ROLE

To do this we need to edit the pg_hba.conf file.

(Feel free to replace nano with an editor of your choice.)

sudo nano /etc/postgresql/9.5/main/pg_hba.conf

Update in the pg_hba.conf file

Look for an uncommented line (a line that doesn’t start with #) that has the contents shown below. The spacing will be slightly different, but the words should be the same.

    local   postgres   postgres   peer

    local   postgres   postgres   md5

Now we need to restart PostgreSQL, so the changes take effect

sudo service postgresql restart

answered Oct 30, 2021 at 10:05

CHAVDA MEETCHAVDA MEET

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

sudo -u postgres psql -c "password"

answered Mar 3, 2018 at 4:05

lcnicolaulcnicolau

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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>;

answered Apr 21, 2016 at 20:53

Salvador DaliSalvador Dali

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If you are on Windows.

Open pg_hba.conf file and change from md5 to peer.

Open cmd and type psql postgres postgres.

Then type password to be prompted for a new password.

Refer to this Medium post for further information & granular steps.

answered Jun 13, 2020 at 19:27

Timothy MachariaTimothy Macharia

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The configuration that I’ve got on my server was customized a lot, and I managed to change the 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.

answered Jan 11, 2014 at 20:39

ruruskyiruruskyi

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For my case on Ubuntu 14.04 (Trusty Tahr), installed with PostgreSQL 10.3: I need to follow the following steps

su - postgres to switch the user to postgres
psql to enter the PostgreSQL shell
password and 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 PostgreSQL service by service postgresql restart
Now switch to the postgres user and enter the PostgreSQL shell again. It will prompt you for a password.

answered Mar 25, 2018 at 19:47

haxporhaxpor

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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';

answered Feb 12, 2018 at 11:52

Chris DareChris Dare

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TLDR:

On many systems, a user’s account often contains a period, or some sort of punctuation (user: john.smith, horise.johnson). In these cases, a modification will have to be made to the accepted answer above. The change requires the username to be double-quoted.

Example

ALTER USER "username.lastname" WITH PASSWORD 'password';

Rationale:

PostgreSQL is quite picky on when to use a ‘double quote’ and when to use a ‘single quote’. Typically, when providing a string, you would use a single quote.

answered Jun 1, 2020 at 18:28

FlyingVFlyingV

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This is similar to other answers in syntax, but it should be known that you can also pass the MD5 hash value of the password, so you are not transmitting a plain text password.

Here are a few scenarios of unintended consequences of altering a users password in plain text.

If you do not have SSL and are modifying remotely you are transmitting the plain text password across the network.
If you have your logging configuration set to log DDL statements log_statement = ddl or higher, then your plain text password will show up in your error logs.
If you are not protecting these logs, it’s a problem.
If you collect these logs/ETL them and display them where others have access, they could end up seeing this password, etc.
If you allow a user to manage their password, they are unknowingly revealing a password to an administrator or low-level employee tasked with reviewing logs.

With that said, here is how we can alter a user’s password by building an MD5 hash value of the password.

PostgreSQL, when hashing a password as MD5, salts the password with the user name and then prepends the text «md5» to the resulting hash.
Example: «md5″+md5(password + username)
In Bash:
```
echo -n "passwordStringUserName" | md5sum | awk '{print "md5"$1}'
```
Output:
```
md5d6a35858d61d85e4a82ab1fb044aba9d
```

In PowerShell:

[PSCredential] $Credential = Get-Credential

$StringBuilder = New-Object System.Text.StringBuilder

$null = $StringBuilder.Append('md5');

[System.Security.Cryptography.HashAlgorithm]::Create('md5').ComputeHash([System.Text.Encoding]::ASCII.GetBytes(((ConvertFrom-SecureStringToPlainText -SecureString $Credential.Password) + $Credential.UserName))) | ForEach-Object {
    $null = $StringBuilder.Append($_.ToString("x2"))
}

$StringBuilder.ToString();

## OUTPUT
md5d6a35858d61d85e4a82ab1fb044aba9d

So finally our ALTER USER command will look like

ALTER USER UserName WITH PASSWORD 'md5d6a35858d61d85e4a82ab1fb044aba9d';

Relevant links (note I will only link to the latest versions of the documentation. For older, it changes some, but MD5 is still supported a ways back.)
create role
The password is always stored encrypted in the system catalogs. The ENCRYPTED keyword has no effect, but is accepted for backwards compatibility. The method of encryption is determined by the configuration parameter password_encryption. If the presented password string is already in MD5-encrypted or SCRAM-encrypted format, then it is stored as-is regardless of password_encryption (since the system cannot decrypt the specified encrypted password string, to encrypt it in a different format). This allows reloading of encrypted passwords during dump/restore.
Configuration setting for password_encryption
PostgreSQL password authentication documentation
Building PostgreSQL password MD5 hash value

answered Aug 20, 2019 at 19:52

jkdbajkdba

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And the fully automated way with Bash and expect (in this example we provision a new PostgreSQL administrator with the newly provisioned PostgreSQL password both on OS and PostgreSQL run-time level):

  # The $postgres_usr_pw and the other Bash variables MUST be defined
  # for reference the manual way of doing things automated with expect bellow
  #echo "copy-paste: $postgres_usr_pw"
  #sudo -u postgres psql -c "password"
  # The OS password could / should be different
  sudo -u root echo "postgres:$postgres_usr_pw" | sudo chpasswd

  expect <<- EOF_EXPECT
     set timeout -1
     spawn sudo -u postgres psql -c "\password"
     expect "Enter new password: "
     send -- "$postgres_usr_pwr"
     expect "Enter it again: "
     send -- "$postgres_usr_pwr"
     expect eof
EOF_EXPECT

  cd /tmp/
  # At this point the 'postgres' executable uses the new password
  sudo -u postgres PGPASSWORD=$postgres_usr_pw psql 
    --port $postgres_db_port --host $postgres_db_host -c "
  DO $$DECLARE r record;
     BEGIN
        IF NOT EXISTS (
           SELECT
           FROM   pg_catalog.pg_roles
           WHERE  rolname = '"$postgres_db_useradmin"') THEN
              CREATE ROLE "$postgres_db_useradmin" WITH SUPERUSER CREATEROLE
              CREATEDB REPLICATION BYPASSRLS
 PASSWORD '"$postgres_db_useradmin_pw"' LOGIN ;
        END IF;
     END$$;
  ALTER ROLE "$postgres_db_useradmin" WITH SUPERUSER CREATEROLE
  CREATEDB REPLICATION BYPASSRLS
PASSWORD  '"$postgres_db_useradmin_pw"' LOGIN ;
 "

answered Oct 20, 2019 at 8:35

Yordan GeorgievYordan Georgiev

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Change password to «postgres» for user «postgres»:

# ALTER USER postgres WITH ENCRYPTED PASSWORD '<NEW-PASSWORD>';

answered Oct 30, 2021 at 10:34

I was on Windows (Windows Server 2019; PostgreSQL 10), so local type connections (pg_hba.conf: local all all peer) are not supported.

The following should work on Windows and Unix systems alike:

backup pg_hba.conf to pg_hba.orig.conf e.g.
create pg_hba.conf with only this: host all all 127.0.0.1/32 trust
restart pg (service)
execute psql -U postgres -h 127.0.0.1
enter (in pgctl console) alter user postgres with password 'SomePass';
restore pg_hba.conf from 1. above

answered Mar 5, 2021 at 13:46

Andreas CovidiotAndreas Covidiot

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Check file pg_hba.conf.

In case the authentication method is ‘peer’, the client’s operating system user name/password must match the database user name and password. In that case, set the password for Linux user ‘postgres’ and the DB user ‘postgres’ to be the same.

See the documentation for details: 19.1. The pg_hba.conf File

answered Oct 2, 2020 at 17:30

In general, just use the pgAdmin UI for doing database-related activity.

If instead you are focusing more in automating database setup for your local development, CI, etc.

For example, you can use a simple combination like this.

(a) Create a dummy super user via Jenkins with a command similar to this:

docker exec -t postgres11-instance1 createuser --username=postgres --superuser experiment001

This will create a super user called experiment001 in you PostgreSQL database.

(b) Give this user some password by running a NON-Interactive SQL command.

docker exec -t postgres11-instance1 psql -U experiment001 -d postgres -c "ALTER USER experiment001 WITH PASSWORD 'experiment001' "

PostgreSQL is probably the best database out there for command line (non-interactive) tooling. Creating users, running SQL, making backup of database, etc.

In general, it is all quite basic with PostgreSQL, and it is overall quite trivial to integrate this into your development setup scripts or into automated CI configuration.

answered Nov 1, 2019 at 17:41

99Sono99Sono

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Using pgAdmin 4:

Menu Object → Change password…

answered Sep 8, 2022 at 12:59

Most of the answers were mostly correct, but you need to look out for minor things. The problem I had was that I didn’t ever set the password of «postgres», so I couldn’t log into an SQL command line that allowed me to change passwords. These are the steps that I used successfully (note that most or all commands need sudo or root user):

Edit the pg_hba.conf file in the data directory of the DB cluster you’re trying to connect to.
- The folder of the data directory can be found by inspecting the systemd command line, easily obtained with systemctl status postgresql@VERSION-DB_CLUSTER. Replace VERSION with your psql version and DB_CLUSTER with the name of your database cluster. This may be main if it was automatically created, so, e.g., postgresql@13-main. Alternatively, my Bash shell provided auto-complete after entering postgresql@, so you could try that or look for the PostgreSQL services in the list of all services (systemctl -a). Once you have the status output, look for the second command line after CGroup, which should be rather long, and start with /usr/lib/postgresql/13/bin/postgres or similar (depending on version, distro, and installation method). You are looking for the directory after -D, for example /var/lib/postgresql/13/main.
Add the following line: host all all 127.0.0.1/32 trust. This allows for all users on all databases to connect to the database via IPv4 on the local machine unconditionally, without asking for a password.

This is a temporary fix and don’t forget to remove this line again later on. Just to be sure, I commented out the host all all 127.0.0.1/32 md5 (md5 may be replaced by scram-sha-256), which is valid for the same login data, just requiring a password.
Restart the database service: systemctl restart postgresql@... Again, use the exact service you found earlier.
Check that the service started properly with systemctl status postgresql@....
Connect with psql, and very importantly, force psql to not ask for a password. In my experience, it will ask you for a password even though the server doesn’t care, and will still reject your login if your password was wrong. This can be accomplished with the -w flag.

The full command line looks something like this: sudo -u postgres psql -w -h 127.0.0.1 -p 5432. Here, postgres is your user and you may have changed that. 5432 is the port of the cluster-specific server and may be higher if you are running more than one cluster (I have 5434 for example).
Change the password with the password special command.
Remember to remove the password ignore workaround and restart the server to apply the configuration.

answered Apr 13, 2021 at 9:05

Источник

I either forgot or mistyped (during the installation) the password to the default user of PostgreSQL. I can’t seem to be able to run it, and I get the following error:

psql: FATAL:  password authentication failed for user "hisham"
hisham-agil: hisham$ psql

Is there a way to reset the password or how do I create a new user with superuser privileges?

I am new to PostgreSQL and just installed it for the first time. I am trying to use it with Ruby on Rails and I am running Mac OS X v10.7 (Lion).

asked Jun 1, 2012 at 7:14

Find the file pg_hba.conf. It may be located, for example, in /etc/postgresql-9.1/pg_hba.conf.

cd /etc/postgresql-9.1/
Back it up

cp pg_hba.conf pg_hba.conf-backup
Place the following line (as either the first uncommented line, or as the only one):

For all occurrence of below (local and host) , except replication
section if you don’t have any it has to be changed as follow ,no MD5
or Peer authentication should be present.

local all all trust
Restart your PostgreSQL server (e.g., on Linux:)

sudo /etc/init.d/postgresql restart

If the service (daemon) doesn’t start reporting in log file:

local connections are not supported by this build

you should change

local all all trust

to

host all all 127.0.0.1/32 trust
You can now connect as any user. Connect as the superuser postgres (note, the superuser name may be different in your installation. In some systems it is called pgsql, for example.)

psql -U postgres

or

psql -h 127.0.0.1 -U postgres

(note that with the first command you will not always be connected with local host)
Reset the password (‘replace my_user_name with postgres since you are resetting the postgres user)

ALTER USER my_user_name with password 'my_secure_password';
Restore the old pg_hba.conf file as it is very dangerous to keep around

cp pg_hba.conf-backup pg_hba.conf
Restart the server, in order to run with the safe pg_hba.conf file

sudo /etc/init.d/postgresql restart

Further reading about that pg_hba file: 19.1. The pg_hba.conf File (official documentation)

answered Jun 1, 2012 at 7:42

Arsen7Arsen7

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When connecting to PostgreSQL from the command line, don’t forget to add -h localhost as a command line parameter. If not, PostgreSQL will try to connect using PEER authentication mode.

The below shows a reset of the password, a failed login with PEER authentication and a successful login using a TCP connection.

# sudo -u postgres psql

could not change directory to "/root"
psql (9.1.11)
Type "help" for help.

postgres=# password
Enter new password:
Enter it again:
postgres=# q

Failing:

# psql -U postgres -W

Password for user postgres:
psql: FATAL:  Peer authentication failed for user "postgres"

Working with -h localhost:

# psql -U postgres -W  -h localhost

Password for user postgres:
psql (9.1.11)
SSL connection (cipher: DHE-RSA-AES256-SHA, bits: 256)
Type "help" for help.

postgres=#

answered Feb 2, 2014 at 10:21

SaeXSaeX

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The pg_hba.conf (C:Program FilesPostgreSQL9.3data) file has changed since these answers were given. What worked for me, in Windows, was to open the file and change the METHOD from md5 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

Then, using pgAdmin III, I logged in without using a password and changed user postgres‘s password by going to menu File → Change Password.

answered Sep 19, 2014 at 22:26

SaiyanGirlSaiyanGirl

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I was just having this problem on Windows 10 and the issue in my case was that I was just running psql and it was defaulting to trying to log in with my Windows username («Nathan»), but there was no PostgreSQL user with that name, and it wasn’t telling me that.

So the solution was to run psql -U postgres rather than just psql, and then the password I entered at installation worked.

answered Jun 26, 2019 at 21:29

Nathan WailesNathan Wailes

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Edit the file /etc/postgresql/<version>/main/pg_hba.conf and find the following line:
```
local  all  postgres  md5
```
Edit the line and change md5 at the end to trust and save the file
Reload the postgresql service
```
sudo service postgresql reload
```
This will load the configuration files. Now you can modify the postgres user by logging into the psql shell
```
psql -U postgres
```

Update the postgres user’s password

alter user postgres with password 'secure-passwd-here';

Edit the file /etc/postgresql/<version>/main/pg_hba.conf and change trust back to md5 and save the file
Reload the postgresql service
```
sudo service postgresql reload
```
Verify that the password change is working
```
psql -U postgres -W
```

answered Aug 17, 2017 at 2:55

Ray HunterRay Hunter

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For Windows (what has helped me):

This is the document I am referring to: How can I reset a PostgreSQL password?

Open your cmd and go to C:Program FilesPostgreSQL12data.
This is usually the right path. You might have it stored somewhere else. Note that, if you have a different PostgreSQL version, there will be a different number. That doesn’t matter.
Find a pg_hba.conf file and copy it to somewhere else (that way you will have an unmodified version of this file, so you will be able to look at it after we make some changes)
Open the pg_hba.conf file (not the backup, but the original)

Find the multiple lines that start with host near the bottom of the file:

host    all             all             127.0.0.1/32            md5

host    all             all             ::1/128                 md5

host    replication     all             127.0.0.1/32            md5

host    replication     all             ::1/128                 md5

Replace md5 with trust:

host    all             all             127.0.0.1/32            trust

host    all             all             ::1/128                 trust

host    replication     all             127.0.0.1/32            trust

host    replication     all             ::1/128                 trust

Close this file
Go to your search bar on windows and open Services app. Find postgres and restart it.

Picture of services app
Write cd.. in cmd and then cd bin. Your path should be C:Program FilesPostgreSQL12bin
Enter: psql -U postgres -h localhost
Enter: ALTER USER postgres with password '<your new password>';Make sure that you include ; at the end
“ALTER ROLE” should be displayed as an indication that the previous line was executed successfully
Open original pg_hba.conf file and change back from trust to md5
Restart the server with Services app as before

answered Nov 15, 2020 at 22:14

Vito FarinaVito Farina

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Just a note: On Linux, you can simply run sudo su - postgres to become the postgres user and from there change what is required using psql.

answered Mar 12, 2018 at 12:58

DanielDaniel

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For a Windows user for the latest PostgreSQL version (greater than 10):

Go to your PostgreSQL installation location, and search for pg_hba.conf, you will find it in ..postgresdatapg_hba.conf.

Open that file with Notepad, and find this line:

# 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
#..

Change the method from *md5* 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
# ...

Now go to your SQL shell (PSQL) and leave everything blank,

Server [localhost]:
Database [postgres]:
Port [8000]:
Username [postgres]:

It will not ask for a password this time, and you will be logged in,

Now run this line:

  `ALTER USER yourusername WITH SUPERUSER`

Now you can leave the shell with q.

Again, go to the file pg_hba.conf and change METHOD from trust to md5 again, and save it.

Now log in with your new user and password, and you can check du for its attributes.

answered Feb 3, 2019 at 13:40

Bidhan MajhiBidhan Majhi

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For a Windows installation, a Windows user is created. And «psql» uses this user for connection to the port. If you change the PostgreSQL user’s password, it won’t change the Windows one.
The command line just below works only if you have access to the command line.

Instead, you could use the Windows GUI application «c:Windowssystem32lusrmgr.exe». This application manages users created by Windows. So you can now modify the password.

answered Mar 21, 2017 at 15:31

I did this to resolve the same problem:

Open the pg_hba.conf file with the gedit editor from the terminal:

sudo gedit /etc/postgresql/9.5/main/pg_hba.conf

It will ask for a password. Enter your admin login password.
This will open gedit with the file. Paste the following line:

host  all   all  127.0.0.1/32  trust
just below -

# Database administrative login by Unix domain socket

Save and close it.

Close the terminal, open it again and run this command:

psql -U postgres

You will now enter the psql console.

Now change the password by entering this:

ALTER USER [your preferred user name] with password '[desired password]';

If it says the user does not exist then instead of ALTER, use CREATE.

Lastly, remove that certain line you pasted in pg_hba and save it.

answered Nov 14, 2017 at 12:08

Taufiq RahmanTaufiq Rahman

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If you are running PostgreSQL on macOS, try these:

1. Edit the pg_hba.conf file

sudo vi /Library/PostgreSQL/9.2/data/pg_hba.conf
and Change the «md5» method for all users to «trust» near the bottom of the file

2. Find the name of the postgres service

ls /Library/LaunchDaemons
Look for postgresql

3. Restart the postgresql service

sudo launchctl stop com.edb.launchd.postgresql-9.2

sudo launchctl start com.edb.launchd.postgresql-9.2 (com.edb.launchd.postgresql-9.2 should be name postgresql service from step 3)

4. Start a psql session as postgres
psql -U postgres
(shouldn’t ask for password because of ‘trust’ setting)

5. Reset password in the psql session by typing:

    ALTER USER postgres with password 'secure-new-password';

6. Edit the pg_hba.conf file
Switch it back to ‘md5’

8. Restart services again

answered Mar 16, 2020 at 15:22

DavidDavid

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If you are on Windows you can just run

net user postgres postgres

And log in in PostgreSQL with postgres/postgres as the user/password.

answered Jun 7, 2016 at 16:36

Follow step 1 on the best answer.

Here is my addition if you use the Windows operating system. Follow only step 1, and then open pgAdmin or postgres on web and click on file on the top nav. Click on reset layout, and finally reload the application. Whatever password you put should work. I used 1234.

answered Jun 27, 2022 at 11:12

I didn’t manage to find the file pg_hba.conf in the folder C:Program FilesPostgreSQL14data, because there is not a folder data at all.

I solved the problem by creating a new user using pgAdmin and gave it super system administrator rights.

answered Nov 23, 2022 at 15:31

BarabasBarabas

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Add the below line to your pg_hba.conf file. Which will be present in the installation directory of PostgreSQL

hostnossl    all          all            0.0.0.0/0  trust

It will start working.

answered Feb 26, 2021 at 10:47

Источник

I either forgot or mistyped (during the installation) the password to the default user of PostgreSQL. I can’t seem to be able to run it, and I get the following error:

psql: FATAL:  password authentication failed for user "hisham"
hisham-agil: hisham$ psql

Is there a way to reset the password or how do I create a new user with superuser privileges?

I am new to PostgreSQL and just installed it for the first time. I am trying to use it with Ruby on Rails and I am running Mac OS X v10.7 (Lion).

asked Jun 1, 2012 at 7:14

Find the file pg_hba.conf. It may be located, for example, in /etc/postgresql-9.1/pg_hba.conf.

cd /etc/postgresql-9.1/
Back it up

cp pg_hba.conf pg_hba.conf-backup
Place the following line (as either the first uncommented line, or as the only one):

For all occurrence of below (local and host) , except replication
section if you don’t have any it has to be changed as follow ,no MD5
or Peer authentication should be present.

local all all trust
Restart your PostgreSQL server (e.g., on Linux:)

sudo /etc/init.d/postgresql restart

If the service (daemon) doesn’t start reporting in log file:

local connections are not supported by this build

you should change

local all all trust

to

host all all 127.0.0.1/32 trust
You can now connect as any user. Connect as the superuser postgres (note, the superuser name may be different in your installation. In some systems it is called pgsql, for example.)

psql -U postgres

or

psql -h 127.0.0.1 -U postgres

(note that with the first command you will not always be connected with local host)
Reset the password (‘replace my_user_name with postgres since you are resetting the postgres user)

ALTER USER my_user_name with password 'my_secure_password';
Restore the old pg_hba.conf file as it is very dangerous to keep around

cp pg_hba.conf-backup pg_hba.conf
Restart the server, in order to run with the safe pg_hba.conf file

sudo /etc/init.d/postgresql restart

Further reading about that pg_hba file: 19.1. The pg_hba.conf File (official documentation)

answered Jun 1, 2012 at 7:42

Arsen7Arsen7

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When connecting to PostgreSQL from the command line, don’t forget to add -h localhost as a command line parameter. If not, PostgreSQL will try to connect using PEER authentication mode.

The below shows a reset of the password, a failed login with PEER authentication and a successful login using a TCP connection.

# sudo -u postgres psql

could not change directory to "/root"
psql (9.1.11)
Type "help" for help.

postgres=# password
Enter new password:
Enter it again:
postgres=# q

Failing:

# psql -U postgres -W

Password for user postgres:
psql: FATAL:  Peer authentication failed for user "postgres"

Working with -h localhost:

# psql -U postgres -W  -h localhost

Password for user postgres:
psql (9.1.11)
SSL connection (cipher: DHE-RSA-AES256-SHA, bits: 256)
Type "help" for help.

postgres=#

answered Feb 2, 2014 at 10:21

SaeXSaeX

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# 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

Then, using pgAdmin III, I logged in without using a password and changed user postgres‘s password by going to menu File → Change Password.

answered Sep 19, 2014 at 22:26

SaiyanGirlSaiyanGirl

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So the solution was to run psql -U postgres rather than just psql, and then the password I entered at installation worked.

answered Jun 26, 2019 at 21:29

Nathan WailesNathan Wailes

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Edit the file /etc/postgresql/<version>/main/pg_hba.conf and find the following line:
```
local  all  postgres  md5
```
Edit the line and change md5 at the end to trust and save the file
Reload the postgresql service
```
sudo service postgresql reload
```
This will load the configuration files. Now you can modify the postgres user by logging into the psql shell
```
psql -U postgres
```

Update the postgres user’s password

alter user postgres with password 'secure-passwd-here';

Edit the file /etc/postgresql/<version>/main/pg_hba.conf and change trust back to md5 and save the file
Reload the postgresql service
```
sudo service postgresql reload
```
Verify that the password change is working
```
psql -U postgres -W
```

answered Aug 17, 2017 at 2:55

Ray HunterRay Hunter

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For Windows (what has helped me):

This is the document I am referring to: How can I reset a PostgreSQL password?

Open your cmd and go to C:Program FilesPostgreSQL12data.
This is usually the right path. You might have it stored somewhere else. Note that, if you have a different PostgreSQL version, there will be a different number. That doesn’t matter.
Find a pg_hba.conf file and copy it to somewhere else (that way you will have an unmodified version of this file, so you will be able to look at it after we make some changes)
Open the pg_hba.conf file (not the backup, but the original)

Find the multiple lines that start with host near the bottom of the file:

host    all             all             127.0.0.1/32            md5

host    all             all             ::1/128                 md5

host    replication     all             127.0.0.1/32            md5

host    replication     all             ::1/128                 md5

Replace md5 with trust:

host    all             all             127.0.0.1/32            trust

host    all             all             ::1/128                 trust

host    replication     all             127.0.0.1/32            trust

host    replication     all             ::1/128                 trust

Close this file
Go to your search bar on windows and open Services app. Find postgres and restart it.

Picture of services app
Write cd.. in cmd and then cd bin. Your path should be C:Program FilesPostgreSQL12bin
Enter: psql -U postgres -h localhost
Enter: ALTER USER postgres with password '<your new password>';Make sure that you include ; at the end
“ALTER ROLE” should be displayed as an indication that the previous line was executed successfully
Open original pg_hba.conf file and change back from trust to md5
Restart the server with Services app as before

answered Nov 15, 2020 at 22:14

Vito FarinaVito Farina

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Just a note: On Linux, you can simply run sudo su - postgres to become the postgres user and from there change what is required using psql.

answered Mar 12, 2018 at 12:58

DanielDaniel

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For a Windows user for the latest PostgreSQL version (greater than 10):

Go to your PostgreSQL installation location, and search for pg_hba.conf, you will find it in ..postgresdatapg_hba.conf.

Open that file with Notepad, and find this line:

# 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
#..

Change the method from *md5* 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
# ...

Now go to your SQL shell (PSQL) and leave everything blank,

Server [localhost]:
Database [postgres]:
Port [8000]:
Username [postgres]:

It will not ask for a password this time, and you will be logged in,

Now run this line:

  `ALTER USER yourusername WITH SUPERUSER`

Now you can leave the shell with q.

Again, go to the file pg_hba.conf and change METHOD from trust to md5 again, and save it.

Now log in with your new user and password, and you can check du for its attributes.

answered Feb 3, 2019 at 13:40

Bidhan MajhiBidhan Majhi

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Instead, you could use the Windows GUI application «c:Windowssystem32lusrmgr.exe». This application manages users created by Windows. So you can now modify the password.

answered Mar 21, 2017 at 15:31

I did this to resolve the same problem:

Open the pg_hba.conf file with the gedit editor from the terminal:

sudo gedit /etc/postgresql/9.5/main/pg_hba.conf

It will ask for a password. Enter your admin login password.
This will open gedit with the file. Paste the following line:

host  all   all  127.0.0.1/32  trust
just below -

# Database administrative login by Unix domain socket

Save and close it.

Close the terminal, open it again and run this command:

psql -U postgres

You will now enter the psql console.

Now change the password by entering this:

ALTER USER [your preferred user name] with password '[desired password]';

If it says the user does not exist then instead of ALTER, use CREATE.

Lastly, remove that certain line you pasted in pg_hba and save it.

answered Nov 14, 2017 at 12:08

Taufiq RahmanTaufiq Rahman

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If you are running PostgreSQL on macOS, try these:

1. Edit the pg_hba.conf file

sudo vi /Library/PostgreSQL/9.2/data/pg_hba.conf
and Change the «md5» method for all users to «trust» near the bottom of the file

2. Find the name of the postgres service

ls /Library/LaunchDaemons
Look for postgresql

3. Restart the postgresql service

sudo launchctl stop com.edb.launchd.postgresql-9.2

sudo launchctl start com.edb.launchd.postgresql-9.2 (com.edb.launchd.postgresql-9.2 should be name postgresql service from step 3)

4. Start a psql session as postgres
psql -U postgres
(shouldn’t ask for password because of ‘trust’ setting)

5. Reset password in the psql session by typing:

    ALTER USER postgres with password 'secure-new-password';

6. Edit the pg_hba.conf file
Switch it back to ‘md5’

8. Restart services again

answered Mar 16, 2020 at 15:22

DavidDavid

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If you are on Windows you can just run

net user postgres postgres

And log in in PostgreSQL with postgres/postgres as the user/password.

answered Jun 7, 2016 at 16:36

Follow step 1 on the best answer.

answered Jun 27, 2022 at 11:12

I didn’t manage to find the file pg_hba.conf in the folder C:Program FilesPostgreSQL14data, because there is not a folder data at all.

I solved the problem by creating a new user using pgAdmin and gave it super system administrator rights.

answered Nov 23, 2022 at 15:31

BarabasBarabas

8528 silver badges17 bronze badges

Add the below line to your pg_hba.conf file. Which will be present in the installation directory of PostgreSQL

hostnossl    all          all            0.0.0.0/0  trust

It will start working.

answered Feb 26, 2021 at 10:47

Источник

На чтение 5 мин Просмотров 10.6к. Опубликовано 17.12.2021

Это необходимо для защиты ваших данных и информации от любых вторжений, которые могут быть выполнены с помощью паролей для ваших пользователей. Пароли используются для защиты ваших данных от любых неудач в будущем, чтобы ни один другой пользователь, кроме вас, не мог войти в систему. Они необходимы, когда вы вошли в систему или вошли в определенную систему для целей аутентификации.

В PostgreSQL, когда вы однажды установили программу установки, она попросит вас установить пароль для базы данных по умолчанию, то есть «postgres». Вы также можете позже создать собственного пользователя в PostgreSQL и установить для него пароль. Но что, если возникает необходимость изменить пароль для управления базой данных или административных функций, и в вашей голове возникает вопрос, как и откуда вы можете изменить пароль? Не о чем беспокоиться, потому что эта статья будет специально посвящена ответу на ваш вопрос с помощью простых и различных способов изменения паролей пользователей в PostgreSQL. Это руководство поможет вам изменить пароли пользователей и четко определить каждый шаг для вашего лучшего понимания.

Различные режимы изменения пароля пользователя:

Вы можете изменить пароли пользователей двумя разными способами в PostgreSQL. В обоих методах вы можете создать и установить пароль, а также изменить его. Вот эти два метода:

Используя pgAdmin.
Используя psql.

Содержание

Шаги по изменению пароля с помощью pgAdmin
Изменить пароль через psql
Измените пароль с помощью операторов ALTER ROLE
Измените пароль с помощью мета-команды
Вывод

Шаги по изменению пароля с помощью pgAdmin

Когда вы открываете PostgreSQL, перед вами отображается примерно следующее:

С левой стороны можно увидеть меню навигации, в котором определены «Логин / Групповые роли». При нажатии на нее появляется выпадающий список.

В этом списке хранятся все имена пользователей, которые существуют в базе данных, вместе с их определенными и привилегированными ролями.

Давайте сначала создадим имя пользователя и установим пароль для этого имени пользователя, а затем мы изменим пароль. Чтобы создать имя пользователя, нажмите «Логин / Роли группы» и нажмите «Создать» логин или групповую роль. Здесь мы создадим роль входа в базу данных с желаемыми ролями.

После нажатия на «Логин / Групповые роли» появится следующее:

В поле имени вы можете указать любое имя, какое захотите. Затем нажмите «Определения» и введите пароль для своего имени пользователя.

В «Привилегиях» определите свои роли пользователей и в конце сохраните данные для входа в систему.

Теперь вы создали пользователя и можете просто изменить пароль, щелкнув свое имя пользователя, а затем «Свойства» на боковой панели навигации следующим образом:

В окне «Свойства» откроется тот же экран, на котором вы создали имя пользователя для входа в систему. Здесь в «Паролях» вы можете ввести свой новый пароль и сохранить его в конце.

В поле «Пароли» повторно введите новый пароль, и ваш пароль будет изменен на имя пользователя «saeed_raza».

Изменить пароль через psql

В оболочке SQL (psql) вы также можете изменить пароль двумя способами:

Использование операторов ALTER ROLE.
Использование мета-команд.

Измените пароль с помощью операторов ALTER ROLE

Операторы ALTER ROLE используются для изменения паролей пользователя в PostgreSQL. Вот основной синтаксис для использования операторов ALTER Role в вашей базе данных:

В приведенном выше заявлении укажите имя пользователя вместо «имени пользователя», пароль которого вы хотите изменить. Затем введите новый пароль вместо new_password, чтобы изменить пароль. Предложение VALID UNTIL не является обязательным; он используется для ввода периода времени, в течение которого вы хотите, чтобы пароль действовал после указанной даты или времени, когда истечет срок действия пароля.

Ниже приведена иллюстрация изменения пароля пользователя «saeed_raza» на новый пароль «data».

ALTER ROLE saeed_raza WITH PASSWORD ‘data’;

Команда ALTER ROLE после оператора SQL обеспечивает изменение пароля в базе данных.

Давайте посмотрим еще один пример изменения пароля, который будет действовать в течение определенного периода, который мы назначим:

ALTER ROLE saeed_raza WITH PASSWORD ‘defined’

VALID UNTIL ‘March 30, 2022’ ;

Я изменил пароль с «данные» на «определенный» для имени пользователя «saeed_raza» и упомянул дату, когда пароль для этого имени пользователя станет действительным, а именно «30 марта 2022 года». Срок действия пароля истечет до этой даты, но если вы не добавите в оператор предложение VALID UNTIL, пароль будет действителен в течение всего времени жизни.

Чтобы убедиться, что пароль действителен до этой даты, выполните следующую команду для проверки:

Эта команда отобразит все списки ролей, которые присутствуют в базах данных, с их атрибутами и именем пользователя. Приведенная выше команда покажет следующие результаты:

В приведенных выше выходных данных вы можете ясно видеть, что в имени роли «saeed_raza» пароль действителен до 30 марта 2022 года.

Измените пароль с помощью мета-команды

В приведенном выше методе для изменения пароля с помощью операторов ALTER ROLE мы увидели, что пароль виден системе, и она также передаст этот пароль на сервер, который также может быть сохранен в истории операторов psql. Вы можете изменить пароль, сохранив его в надежном и безопасном месте в журнале сервера и его истории с помощью этого метода.

Во-первых, при запуске psql вы должны ввести имя пользователя, пароль которого вы хотите изменить:

Я ввел имя пользователя saeed_raza, потому что хочу изменить пароль этого пользователя в PostgreSQL. Теперь следуйте этому простому синтаксису, который также изменит пароль пользователя или пароль по умолчанию PostgreSQL, просто используя метакоманду:

postgres=# password

Enter new password:

Enter it again:

Теперь пароль для пользователя saeed_raza изменен с помощью этой простой метакоманды.

Вывод

В этом руководстве мы узнали, как можно изменить пароль пользователя с помощью pgAdmin и psql, а также с различными способами psql. Все методы, которые мы использовали в этой статье, были эффективными и простыми, которые вы можете реализовать в своей системе, чтобы окончательно ответить на ваши вопросы о том, как изменить пароли пользователей в PostgreSQL.

Источник

Обновлено: 17.09.2021
Опубликовано: 20.07.2016

Что такое PostgreSQL простыми словами.

Создание пользователя
Использование групп
Редактирование пользователя
Удаление пользователя или группы
Особые права
Для резервного копирования
Графический интерфейс

Часть нижеописанных операций нужно выполнять в командной оболочке PostgreSQL. Она может быть запущена от пользователя postgres — чтобы войти в систему от данного пользователя, вводим:

su — postgres

* если система выдаст ошибку, связанную с нехваткой прав, сначала повышаем привилегии командой sudo su или su.

Теперь запускаем командную оболочку PostgreSQL:

$ psql -Upostgres template1

* в данном примере, вход выполняется от учетной записи postgres к шаблонной базе template1.

Для просмотра всех пользователей СУБД:

=# select * from pg_user;

Создание нового пользователя

Для того, чтобы была возможность подключения к СУБД PostgreSQL от нового пользователя, необходимо создать данного пользователя, назначить ему права, выполнить настройку файла pg_hba.conf.

1. Создание пользователя

а) Добавление новой роли (пользователя) из оболочки SQL:

=# CREATE USER dmosk WITH PASSWORD ‘myPassword’;

* в примере создана роль dmosk с паролем myPassword.

б) Добавление новой роли (пользователя) из командной строки Linux:

createuser -P dmosk

2. Назначение прав на использование базы данных

Даем права на базу командой:

=# GRANT ALL PRIVILEGES ON DATABASE «database1» to dmosk;

Теперь подключаемся к базе, к которой хотим дать доступ:

=# c database1

* в примере подсоединимся к базе с названием database1.

а) Так мы добавим все права на использование всех таблиц в базе database1 учетной записи dmosk:

database1=# GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO «dmosk»;

* в большинстве случаев, используется схема по умолчанию public. Но администратор может создать новую схему. Это нужно учитывать при назначении прав.

б) Также можно дать доступ к базе для определенных таблиц:

database1=# GRANT ALL PRIVILEGES ON TABLE table1 IN SCHEMA public TO «dmosk»;

* в данном примере мы даем права на таблицу table1.

Выходим из SQL-оболочки:

database1=# q

3. Настройка файла pg_hba.conf

Для возможности подключиться к СУБД от созданного пользователя, необходимо проверить настройки прав в конфигурационном файле pg_hba.conf.

Для начала смотрим путь расположения данных для PostgreSQL:

=# SHOW config_file;

В ответ мы получим, что-то на подобие:

——————————————
/var/lib/pgsql/9.6/data/postgresql.conf
(1 row)

* в данном примере /var/lib/pgsql/9.6/data/ — путь расположения конфигурационных файлов.

Открываем pg_hba.conf:

vi /var/lib/pgsql/9.6/data/pg_hba.conf

Добавляем права на подключение нашему созданному пользователю:

…
# IPv4 local connections:
host all dmosk 127.0.0.1/32 md5
…

* в данном примере мы разрешили подключаться пользователю dmosk ко всем базам на сервере (all) от узла 127.0.0.1 (localhost) с требованием пароля (md5).
* необходимо, чтобы данная строка была выше строки, которая прописана по умолчанию
host all all 127.0.0.1/32 ident.

После перезапускаем службу:

systemctl restart postgresql-9.6

* в данном примере установлен postgresql версии 9.6, для разных версий на разных операционных системах команды для перезапуска сервиса могут быть разные.

4. Проверка

Для теста пробуем подключиться к Postgre с помощью созданного пользователя:

psql -Udmosk template1 -h127.0.0.1

Настройка прав доступа к базе с помощью групп

Сначала создадим групповую роль:

=# CREATE ROLE «myRole» NOSUPERUSER INHERIT NOCREATEDB NOCREATEROLE NOREPLICATION;

* данной командой создана группа myRole с минимальными правами.

Теперь добавим ранее созданного пользователя dmosk в эту группу:

=# GRANT «myRole» TO dmosk;

Подключимся к базе данных, для которой хотим настроить права

=# c database1

и предоставим все права для группы myRole всем таблицам базы database1

database1=# GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO GROUP «myRole»;

Редактирование пользователя

1. Смена пароля

Рассмотрим несколько примеров смены пароля пользователя.

Одной командой:

=# ALTER USER postgres PASSWORD ‘password’

* в данном примере мы зададим пароль password для пользователя postgres.

С запросов ввода пароля:

=# password postgres

* после ввода данной команды система потребует дважды ввести пароль для пользователя (в нашем примере, postgres).

Из командной строки Linux:

sudo -u postgres psql -U postgres -d postgres -c «ALTER USER postgres PASSWORD ‘password'»

* по сути, мы выполняем также запрос в оболочке sql.

Удаление пользователей и групп

Удаление пользователя выполняется следующей командой:

=# DROP USER dmosk;

Забрать права:

database1=# REVOKE ALL PRIVILEGES ON ALL TABLES IN SCHEMA public FROM «dmosk»;

* обратите внимание, данный запрос отличается от предоставления прав двумя моментами: 1) вместо GRANT пишем REVOKE; 2) вместо TO «dmosk» пишем FROM «dmosk»;

Назначение особых прав пользователям PostgreSQL

Помимо ALL PRIVILEGES можно выдавать права на особые операции, например:

=# GRANT SELECT, UPDATE, INSERT ON ALL TABLES IN SCHEMA public TO «dmosk»;

* команда позволит выдать права на получение данных, их обновление и добавление. Другие операции, например, удаление будут запрещены для пользователя dmosk.

Назначение прав для определенной таблицы:

database1=# GRANT ALL PRIVILEGES ON table_users TO «dmosk»;

* в данном примере мы предоставим все права на таблицу table_users в базе данных database1;

Учетная запись для резервного копирования

Для выполнения резервного копирования лучше всего подключаться к базе с минимальными привилегиями.

Сначала создаем роль, которую будем использовать для выполнения резервного копирования:

=# CREATE USER bkpuser WITH PASSWORD ‘bkppasswd’;

* мы создадим учетную запись bkpuser с паролем bkppasswd.

Предоставляем права на подключения к базе

=# GRANT CONNECT ON DATABASE database TO bkpuser;

* в данном примере к базе database.

Подключаемся к базе (в нашем примере database):

=# c database

Даем права на все последовательности в схеме:

=# GRANT SELECT ON ALL SEQUENCES IN SCHEMA public TO bkpuser;

* мы дали права для схемы public. Это схема является схемой по умолчанию, но в вашем случае она может быть другой. В таком случае, подставляем свое значение.

Графический интерфейс

Иногда проще воспользоваться программой для выставления прав и работы с PostgreSQL. Могу посоветовать приложение pgAdmin. Оно позволит в оконном режиме не только создать и удалить пользователей, но и полноценно работать с СУБД.

Источник

In this Postgresql tutorial, we are going to learn about “Postgresql set user password”, which means changing the password of an existing user in the Postgres database on different environments like Windows, Ubuntu, etc.

We are going to cover the following topics.

How to set user password in PostgreSQL in windows OS
Set user password in PostgreSQL in ubuntu
Change user password using pgadmin in PostgreSQL

In Postgresql, We can change the password of the user using the below syntax.

Syntax:

ALTER USER user_name WITH PASSWORD 'new_password';

Here ALTER USER is a command that changes the attributes of a PostgreSQL user account, user_name is the name of the user whose password is to be altered and new_password is the password that you want to set for the user.

We can change password of a Postgresql user account using the command line in windows.

The following are the instructions to change the password of the user.

Open CMD on your computer using CTRL+R and type cmd in the box, then hit Enter from your keyboard.

Enter into psql command prompt as postgres user using below command.

If it asks for a password, then enter the password of the user and remember the password.

psql -U postgres

Now change the password of the current user postgres.

ALTER USER postgres WITH PASSWORD '23456';

Now remember this new password and forget the password that we have remembered before for a user named postgres.

Exit from the psql prompt.

q -- To exit from psql prompt in Postgresql databast

PostgreSQL set user password windows

We have successfully change the password of a user named Postgres.

Now log in again with the new password of user Postgres.

psql -U postgres

if it asks for a password, enter the new password that we have set recently.

Postgresql set user password windows

Read: How to create a table in PostgreSQL

Postgresql set user password ubuntu

In Ubuntu, we can change the password of the Postgresql user account using the terminal.

Open the terminal using CTRL+ALT+T from your keyboard and log into the Postgres prompt using the below command.

sudo su - postgres

Enter into psql prompt.

psql

Now change the password of the user named postgres.

ALTER USER postgres WITH PASSWORD '23456';

Exit from psql prompt and logout from Postgres prompt.

exit -- To exit from psql and postgres prompt

Postgresql set user password ubuntu

From the above output, we see the output “ALTER ROLE”, which means the password changed successfully.

Now again log in with the new password and if it asks for a password, then enter the new password.

sudo -i -u postgres

You will successfully be logged in.

Read: PostgreSQL installation on Linux

Postgresql change user password pgadmin

In Postgresql, we can also change the user password from the pgAdmin application.

The following are the instructions to change passwords in the Postgresql database.

Open pdAdmin, go to Browser section and expand icon > in front of Server then expand the icon > in front of Login/Group Roles.

Postgresql change user password pgadmin

Now select postgres user from Login/Group Roles, right-click on that and click on option Properties.

Postgresql change user password pgadmin

After clicking on Properties, a Login Role-postgres dialog appears, click on the Definition tab and enter the password then click on the Save button at the bottom right corner.

Postgresql change user password pgadmin

After clicking on Save, we have successfully changed the password of a user named postgres. Now, close the pgAdmin application, and log in again with the new password.

You may also like some of our latest articles on PostgreSQL.

PostgreSQL WHERE IN
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Postgresql create user with password
PostgreSQL DATE Format
PostgreSQL ADD COLUMN
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Postgresql create database

So in this tutorial, we have learned about “Postgresql set user password” and changed the password of existing users. We have covered the following topics.

How to set user password windows in PostgreSQL
Set user password ubuntu in PostgreSQL
How to change user password pgadmin in PostgreSQL

Bijay

I am Bijay having more than 15 years of experience in the Software Industry. During this time, I have worked on MariaDB and used it in a lot of projects. Most of our readers are from the United States, Canada, United Kingdom, Australia, New Zealand, etc.

Want to learn MariaDB? Check out all the articles and tutorials that I wrote on MariaDB. Also, I am a Microsoft MVP.

Источник

Note:

Setting up a password for the postgres role

Change password to PostgreSQL for user postgres

To do this we need to edit the pg_hba.conf file.

Update in the pg_hba.conf file

Now we need to restart PostgreSQL, so the changes take effect

Example

For Windows (what has helped me):

For Windows (what has helped me):

Шаги по изменению пароля с помощью pgAdmin

Изменить пароль через psql

Измените пароль с помощью операторов ALTER ROLE

Измените пароль с помощью мета-команды

Вывод

Создание нового пользователя

1. Создание пользователя

2. Назначение прав на использование базы данных

3. Настройка файла pg_hba.conf

4. Проверка

Настройка прав доступа к базе с помощью групп

Редактирование пользователя

1. Смена пароля

Удаление пользователей и групп

Назначение особых прав пользователям PostgreSQL

Учетная запись для резервного копирования

Графический интерфейс

Postgresql set user password ubuntu

Postgresql change user password pgadmin

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