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The Kong installation instructions for RedHat focus on Kong. These instructions add some additional steps to get PostgreSQL setup. These exact installation steps come from an EC2 instance of RedHat Enterprise Linux 7, but can be generally applied to most Linux releases as well.
As the ec2 default user run the following:
sudo yum install postgresql94 postgresql94-server
sudo /usr/pgsql-9.4/bin/postgresql94-setup initdb
sudo systemctl enable postgresql-9.4
sudo systemctl start postgresql-9.4
sudo -i -u postgres (this drops you into a new shell)
# psql
> CREATE USER kong; CREATE DATABASE kong OWNER kong; ALTER USER kong WITH password 'kong';
> \q
# exit
Change “ident” to “md5”
sudo vi /var/lib/pgsql/9.4/data/pg_hba.conf
The configuration line will look like this:
host all all 127.0.0.1/32 md5
Restart PostgreSQL
sudo systemctl restart postgresql-9.4.service
Continue with the “migrations up” step from the Kong install instructions.