Postgres is failing with 'could not open relation mapping file “global/pg_filenode.map” '

Question

I\'m having an issue with my install of postgres in my development environment and I need some help diagnosing it. I haven\'t yet had any luck in tracking down a solution.

Answer 1

My step-by-step solution in fedora:

• /bin/systemctl stop postgresql.service (Stop the service)
• rm -rf /var/lib/pgsql/data (Remove the "data" direcotry)
• postgresql-setup initdb (Recreate the "data" directory)
• /bin/systemctl start postgresql.service (Start the service)

It is also useful to check the permissions of the "data" directory:

chown -R postgres:postgres

(Kudos to @LuizFernandodaSilva & @user4640867)