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installing and setting up a new db

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You will need sudo on that machine.

• install postgres:

sudo yum install postgresql sudo yum install postgresql-server

postgres tends to install its files under the username postgres. You should therefore create and use this user for the steps below. Specifically you need access to /var/run/postgresql/

• make a directory for posgres data:

mkdir -p /usr/local/pgsql/data

• Create a database cluster (file structure)

initdb -D /usr/local/pgsql/data

• Initialise the server (I think I only need to do the second of these things)

postmaster -D /usr/local/pgsql/data >logfile 2>&1 & postgres -D /usr/local/pgsql/data &

• create database:

createdb <db_name>

• To restart the server (after shutting down for example)

su - postgres pg_ctl start -D /usr/local/pgsql/data

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Configuring

The config files will be inside the database cluster directory you created above (so /usr/local/pgsql/data/ in the example).

There are two main config files, both in the above dir.

pg_hba.conf (the client authentication configuration file) postgresql.conf (all sorts of things)

You need to explicity allow for external hosts to connect to the database:

pg_hba.conf: # IPv4 local connections: host all all 192.171.161.1/24 trust

postgresql.conf listen_addresses = '*'

pg_ctl is a utility for monitoring and controlling a posgreSQL server Check server status: pg_ctl status -D /usr/local/pgsql/data pg_ctl: server is running (PID: 29763)