What is the Default Password for PostgreSQL?

When connecting to PostgreSQL on Linux for the first time many admins have questions, especially if those admins are from the MySQL world. By default, when PostgreSQL is installed, a postgres user is also added.

If you run the command:

cat /etc/passwd

… you’ll see the postgres user.

postgres:x:26:26:PostgreSQL Server:/var/lib/pgsql:/bin/bash


The first question many ask is, “What is the default password for the user postgres?” The answer is easy… there isn’t a default password. The default authentication mode for PostgreSQL is set to ident.

cat /var/lib/pgsql/9.3/data/pg_hba.conf

… you’ll see the authentication mode is ident.

# IPv4 local connections:
host    all              all                ident
# IPv6 local connections:
host    all              all             ::1/128                  ident

What is the ident authentication method? Well, it works by taking the OS username you’re operating as and comparing it with the allowed database username(s). There is optional username mapping.

This means that in order to connect to PostgreSQL you must be logged in as the correct OS user. In this case, we are logged into the server as root. When we try to connect to PostgreSQL:


… we get the following error:

psql: FATAL: role "root" does not exist

However, if we become the default PostgreSQL user, postgres:

su - postgres

… then attempt a connection to PostgreSQL:


… I get the correct, valid response!

psql (9.3.9)
Type "help" for help.


Is your Cloud VPS slowing down your PostgreSQL instance? Web’s Dedicated Servers is the solution. Web’s server outmatches the competition on performance and support. Check out how our Dedicated Servers can skyrocket your site’s performance.

Related posts

Researcher Discovers Serious Vulnerability in Paper Crypto Wallet Site

Viking Coin

Bitcoin Gets its Groove Back as Price Resistance Breaks

Viking Coin

40 Banks Trial Commercial Paper Trading in Latest R3 Blockchain Test

Viking Coin

‘Voldemort’ Strikes Again? A New Crypto White Paper Has His Name On It

Viking Coin

Bank Tech Provider Sinodata Calls for Blockchain Collaborations

Viking Coin

How to enable the gzip/deflate in nginx server on Linux or Unix system

Viking Coin

Pan-African Insurer Old Mutual Will Not Insure Mining Rigs

Viking Coin

Ex-JPMorgan Transactions Exec Joins Bitcoin Startup Circle As CFO

Viking Coin

Fidelity May Formally Launch Its Crypto Custody Service in March

Viking Coin