How to reset your forgotten password in PostgreSQL

The moment you realize the problem

It's a good practice even for your local DB server to provide a password for each user. PostgreSQL's default user (who is also an admin) is postgres.

A standard method to get access to our DB is using psql command via terminal (I'm running Manjaro Linux). So, we type:

psql -U postgres

We enter our password and we get the message

Don't Panic!

First of all, we must find the "PostgreSQL Client Authentication Configuration File", which has the name pg_hba.conf. In Manjaro, it lives in path /var/lib/postgres/data/pg_hba.conf. Be careful that it is required to have root permissions.

sudo nano /var/lib/postgres/data/pg_hba.conf

We change the md5 authentication in "local" connection to trust

local   all             all                                     trust

and we restart our server

sudo systemctl restart postgresql

Now PostgreSQL doesn't ask a password and we are allowed to connent with user postgres

Next step is to reset the password

We exit psql, we turn back pg_hba.conf to it's previous state (md5 authentication) and we restart the server. We are able to connent using our new password for user postgres.

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Originally published at https://www.codingnotebook.eu/postgresql-reset-password/