Many tasks are failing in ansible provision.yml

Postgres

My first time using Ansible and running ansible-playbook provision.yml -i stages/stage.yml fails on task Creates postgres database:

TASK [Creates postgres database] ***************************************************************************************************************************************
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: psycopg2.OperationalError: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: FATAL:  Peer authentication failed for user "postgres"
fatal: [stage1]: FAILED! => {"changed": false, "msg": "unable to connect to database: connection to server on socket \"/var/run/postgresql/.s.PGSQL.5432\" failed: FATAL:  Peer authentication failed for user \"postgres\"\n"}

Googled a bit and found that adding this to task, fixes it:

    - name: Creates postgres database
      become: true
      become_user: postgres

Then with the next task Creates postgres user same issue, adding that again fixed it 😉

Other

After postgres, other tasks were failing because their directories didn’t exist, such as /mnt/persist/uwsgi/conf.d/, /mnt/persist/nginx/conf.d/, /mnt/persist/nodejs/ and /mnt/persist/etc/

I don’t know if all of this is happening just with my server or not, just wanted to let you guys know… Did I forget to run something? Server is DigitalOcean’s droplet with an Ubuntu 20.04 (LTS) x64 on it.