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

I agree about all of the above solutions. I was running Postgres on a server, and the problem was that I was using a PORT number that was used by some other OLDER version of Postgres.

I only needed to change the port.

Answer 2

This (https://gist.github.com/olivierlacan/e1bf5c34bc9f82e06bc0) solved my problem! I first had to:

1. Delete Postgres.app from my Applications
2. Delete /usr/local/var/postgres directory
3. initdb /usr/local/var/postgres/

Then I was able to start/stop Postgres with these 2 commands:

Start:

pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

Stop:

pg_ctl -D /usr/local/var/postgres stop -s -m fast

Answer 3

I had the same error psql: FATAL: could not open relation mapping file "global/pg_filenode.map": No such file or directory.

Thanks for note #2 above: 'Kill the processes for 9.0.3'

I previously configured and compiled PostgreSQL. I then decided to reconfigure, gmake, gmake install with different file paths. The newly compiled program wasn't finding 'pg_filenode.map' in the expected filepath. Killing the running postgres process, emptying pgsql/data, and doing initdb again allowed creation of a new database.

Answer 4

That may be a permission issue, Please check the owner and group of configuration files in /var/lib/pgsql/9.3/data/

chown -R postgres:postgres /var/lib/pgsql/9.3/data/

solved the issue for me

Answer 5

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 <path_to_data_dir>

(Kudos to @LuizFernandodaSilva & @user4640867)

Answer 6

Encountered this problem using mdillon/postgis:9.6 Docker image. Simple sudo docker restart <container id> solved the problem.