Installing EDB Postgres Advanced Server on RHEL 8 or OL 8 x86_64 v14

Prerequisites

Before you begin the installation process:

• Set up the EDB repository.

  Setting up the repository is a one-time task. If you have already set up your repository, you don't need to perform this step.

  To determine if your repository exists, enter this command:

  dnf repolist | grep enterprisedb

  If no output is generated, the repository isn't installed.

  To set up the EDB repository:

  1. Go to EDB repositories.

  2. Select the button that provides access to the EDB repository.

  3. Select the platform and software that you want to download.

  4. Follow the instructions for setting up the EDB repository.

• Install the EPEL repository:

  → WrapCopy

  sudo dnf -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm

• If you're also installing PostGIS, enable additional repositories to resolve dependencies:

  → WrapCopy

  ARCH=$( /bin/arch ) subscription-manager repos --enable "codeready-builder-for-rhel-8-${ARCH}-rpms"

  Note

  If you're using a public cloud RHEL image, subscription manager might not be enabled. Enabling it might incur unnecessary charges. Equivalent packages might be available under a different name, such as codeready-builder-for-rhel-8-rhui-rpms. To determine how to install codeready-builder, consult the documentation for the RHEL image you're using.

Install the package

sudo dnf -y install edb-as<xx>-server

Where <xx> is the version of the EDB Postgres Advanced Server you're installing. For example, if you're installing version 14, the package name is edb-as14-server.

To install an individual component:

sudo dnf -y install <package_name>

Where package_name can be any of the available packages from the available package list.

Installing the server package creates an operating system user named enterprisedb. The user is assigned a user ID (UID) and a group ID (GID). The user has no default password. Use the passwd command to assign a password for the user. The default shell for the user is bash, and the user's home directory is /var/lib/edb/as14.

Initial configuration

Getting started with your cluster involves logging in, ensuring the installation and initial configuration was successful, connecting to your cluster, and creating the user password.

First, you need to initialize and start the database cluster. The edb-as-14-setup script creates a cluster in Oracle-compatible mode with the edb sample database in the cluster. To create a cluster in Postgres mode, see Initializing the cluster in Postgres mode.

sudo PGSETUP_INITDB_OPTIONS="-E UTF-8" /usr/edb/as14/bin/edb-as-14-setup initdb

sudo systemctl start edb-as-14

To work in your cluster, log in as the enterprisedb user. Connect to the database server using the psql command-line client. Alternatively, you can use a client of your choice with the appropriate connection string.

sudo su - enterprisedb

psql edb

The server runs with the peer or ident permission by default. You can change the authentication method by modifying the pg_hba.conf file.

Before changing the authentication method, assign a password to the database superuser, enterprisedb. For more information on changing the authentication, see Modifying the pg_hba.conf file.

ALTER ROLE enterprisedb IDENTIFIED BY password;

Experiment

Now you're ready to create and connect to a database, create a table, insert data in a table, and view the data from the table.

First, use psql to create a database named hr to hold human resource information.

# running in psql
CREATE DATABASE hr;

CREATE DATABASE

Connect to the hr database inside psql:

\c hr

psql (14.0.0, server 14.0.0)
You are now connected to database "hr" as user "enterprisedb".

Create columns to hold department numbers, unique department names, and locations:

CREATE TABLE public.dept (deptno numeric(2) NOT NULL CONSTRAINT dept_pk
PRIMARY KEY, dname varchar(14) CONSTRAINT dept_dname_uq UNIQUE, loc
varchar(13));

CREATE TABLE

Insert values into the dept table:

INSERT INTO dept VALUES (10,'ACCOUNTING','NEW YORK');

INSERT 0 1

INSERT into dept VALUES (20,'RESEARCH','DALLAS');

INSERT 0 1

View the table data by selecting the values from the table:

SELECT * FROM dept;

deptno  |   dname    |   loc
--------+------------+----------
10      | ACCOUNTING | NEW YORK
20      | RESEARCH   | DALLAS
(2 rows)