![]() # close the communication with the PostgreSQLĮxcept (Exception, psycopg2. Print('Connecting to the PostgreSQL database.') Then, I try to connect to the database through python and the following method: def get_resources_sql(): Here I have the environment file with only this line: POSTGRES_HOST_AUTH_METHOD=trust Because this was all done in the background, it didn't occur to me that this was the problem as none of the usual errors popped up to inform that the port was being used, etc.I'm trying to implement configure the postgres database of this project on MacOS, so I installed postgres, docker and I tried to run docker-compose up -d on this docker file: version: "3" One thing that I didn't realise, is that on Mac, doing the above will not only install required libraries, but also start a database on :5432. I wanted to tidy up the roles in my postgreSQL database, when I stumbled upon one role I never consciously created. Now, on a Mac, you will need to do the same with brew: brew install postgresql Switch to PRTG to get rid of all PostgreSQL errors and gain a comprehensive hardware overview check bandwidth, traffic and more. This is because psycopg2 requires an operating system install of the postgres libraries: yum install postgresql-devel Usually running through docker, using python and connecting to a postgres database requires you to install psycopg2, via pip3 install psycopg2, but if you run this command you will get: Error: pg_config executable not found. This question recently passed 10,000 views, so I thought I should elaborate more on why this happened. ![]() See: PostgreSQL error: Fatal: role 'username' does not exist. So I remembered I installed it via, I ran $ pg-stopĪnd then I had no problem connecting to the Docker instance. Then you may want to create a DB role named 'edac' (without superuser privileges): CREATE ROLE edac Or, to just do that in one step with the shell command createuser: sudo -u postgres createuser edac. The problem was simple enough that my computer was already running an instance of Postgres that I was not aware was still running (not inside Docker) on :5432, checked with: $ lsof -n -i:5432 | grep LISTEN Resolution Create the user account on the PostgreSQL database. ![]() Why am I getting this error? The role exists, or at least it seems it to me. DataDirect ODBC PostgreSQL Wire Protocol driver PostgreSQLFATAL: role 'username' does not exist (File miscinit.c Line 505 Routine InitializeSessionUserId Defect Number Enhancement Number Cause The user does not have a PostgreSQL user account. I do the same with PSequal.app, says the same thing, $ psql: FATAL: role "ming" does not exist ![]() A role is an entity that can own database objects and have database privileges a role can be considered a 'user', a 'group', or both depending on how it is used.Refer to Chapter 20 and Chapter 19 for information about managing users and authentication. $ psql: FATAL: role "postgres" does not exist CREATE ROLE adds a new role to a PostgreSQL database cluster. You first need to login as the Postgres super user. ![]() My plan is to use this database on docker with Django, so first want to check I can connect, but I cant. 3 Answers Sorted by: 55 If you want to login to Postgres using the username root you need to first create such a user. Or change calls to psql as needed: psql -Uusername database. You need to create the user in postgres: create user deployer Alternatively, add an export in your profile, e.g.: export PGUSERpostgres. docker exec -it dockerdatabase1 psql -U georchestra psql (10.5 (Debian 10.5-1.pgdg90+1)) Type 'help' for help. pgrestore: archiver (db) could not execute query: ERROR. The files belonging to this database system will be owned by user 'postgres'., This user must also own the server process.,, The database cluster will be initialized with locale 'enUS.utf8'., The default database encoding has accordingly been set to 'UTF8'., The default text search configuration will be set to 'english'.,, Data page checksums are disabled.,, fixing permissions on existing. Postgres=# GRANT ALL PRIVILEGES ON DATABASE youtube TO ming deployerxxx: psql psql: FATAL: role 'deployer' does not exist. consequently, you will have to use the option '-U georchestra' to connect to the container. EsaJokinen, I tried many queries but simply I can wrote thissudo su - postgres CREATE ROLE TCOYUKSEL superuser ALTER ROLE TCOYUKSEL WITH LOGIN MiskinSensei. Postgres=# CREATE ROLE ming WITH LOGIN PASSWORD 'pass1234' 12 Answers Sorted by: 223 Simple script (question asked) Building on ahorsewithnoname 's answer and improved with Gregory's comment: DO do BEGIN IF EXISTS ( SELECT FROM pgcatalog.pgroles WHERE rolname 'myuser') THEN RAISE NOTICE 'Role 'myuser' already exists. I downloaded the docker container for postgres:, and did the following: $ docker run -name satgres -e POSTGRES_PASSWORD=mysecretpassword -d -p 5432:5432 postgres ![]()
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