PostgreSQL and MongoDB Software Collections: Three easy steps to get started

July 28, 2016
Tomáš Repík
Related topics:
Linux
Related products:
Red Hat Enterprise Linux

In the first part of my series on Software Collections (SCL), I gave general information and listed the three steps needed to get started with SCL for a number of languages. This post covers the steps for PostgreSQL and MongoDB.

Enable the SCL repository

The first step is to enable the SCL software repository if you haven't already done so. As the root user run:

# subscription-manager repos --enable rhel-server-rhscl-7-rpms

Now onto installing the database software.

PostgreSQL

PostgreSQL is a powerful open source, object-relational, ACID compliant, database system. PostgreSQL runs on all major operating systems. Its key features are reliability, data integrity, and correctness. Recently PostgreSQL 9.5 was released as part of Red Hat Software Collections (RHSCL) 2.2. A number of earlier releases (9.2 and 9.4) are also available from RHSCL.

To install the PostgreSQL 9.5 collection, run the following command as the root user:

# yum install rh-postgresql95

Now set up PostgreSQL and create the initial database. First use scl enable to add PostgreSQL to the root user's environment, then run setup.

# scl enable rh-postgresql95 bash
# postgresql-setup --initdb

Now start the PostgreSQL server and enable it to start up when your system boots:

# systemctl start rh-postgresql95-postgresql
# systemctl enable rh-postgresql95-postgresql

To run psql as the postgres user, you need to use su as well as scl enable in order to set up that user's environment.

# su - postgres -c 'scl enable rh-postgresql95 -- psql'

PostgreSQL software collections as a docker formatted container image

Last but not least, you can try PostgreSQL 9.5 in a docker container. On Red Hat Enterprise Linux 7, you can get the image with the following commands:

$ docker pull registry.access.redhat.com/rhscl/postgresql-95-rhel7

More information

To see what packages were installed  as part of the rh-postgresql95 collection, and what others are available:

# yum list rh-postgresql95\*

Note: The rh-postgresql95 collection includes the PostgreSQL server components and related client tools that match the specific server version. When building and installing client applications, it is recommended to use the postgresql-libs package available as part of the base Red Hat Enterprise Linux system.

# yum install postgresql-libs

For more information see:

MongoDB

MongoDB is a cross-platform, open-source, document database designed for ease of development and scaling. Recently MongoDB 3.2 was released as part of Red Hat Software Collections (RHSCL) 2.2. A number of earlier releases (2.4, 2.6, and 3.0) are also available from RHSCL.

To install the MongoDB 3.2 collection, run the following command as the root user:

# yum install rh-mongodb32 rh-mongodb32-mongodb

Now start the mongod server and enable it to start up when your system boots. First you will need to use scl enable to add MongoDB to the root user's environment:

# scl enable rh-mongodb32 bash
# systemctl start rh-mongodb32-mongod
# systemctl enable rh-mongodb32-mongod

To start using MongoDB, use scl enable to add it to your environment and run a bash shell:

$ scl enable rh-mongodb32 bash

You can now run the mongo client:

$ mongo

MongoDB 3.2 software collections as a docker formatted container image

Last but not least, you can try MongoDB 3.2 in a docker container. On Red Hat Enterprise Linux 7, you can get the image with the following commands:

$ docker pull registry.access.redhat.com/rhscl/mongodb-32-rhel7

More information

The collection rh-mongodb32 delivers version 3.2 of the MongoDB server, related client tools, and mongo-java-driver to connect to MongoDB server in Java. To see what packages were installed as part of the rh-mongodb32 collection, and what others are available:

# yum list rh-mongodb32\*

For more information see:

Links to other parts:

Introduction part 1

Last updated: November 1, 2023