PostgreSQL, commonly known as Postgres, is a powerful open-source object-relational database management system (DBMS) renowned for its robustness and reliability. Its adherence to SQL standards<\/strong> and features such as ACID compliance<\/strong> make it a favorite among developers for complex data-driven applications.<\/p>\n In this guide, we will walk you through the essential steps required to successfully install PostgreSQL on an Ubuntu system. Whether you’re a beginner or experienced, these instructions will simplify the process of setting up your database server.<\/p>\n Before we dive into the installation steps, ensure you have:<\/p>\n To kick off the installation, first, update your server’s package index. This ensures that you have the latest updates and security patches:<\/p>\n Next, install PostgreSQL along with the additional utilities that enhance its functionality:<\/p>\n After installation, verify the version installed:<\/p>\n Start the PostgreSQL service to ensure it’s running:<\/p>\n PostgreSQL utilizes a role-based authentication<\/strong> system, which is somewhat akin to Unix-style users and groups. Upon installation, a default user named postgres<\/strong> is created, which allows you to access the database management system.<\/p>\n To interact with PostgreSQL, you can switch to the postgres user:<\/p>\n Then enter the PostgreSQL shell:<\/p>\n To exit, simply type:<\/p>\n Creating new roles and databases is straightforward. For example, to create a user named sammy<\/strong> with superuser privileges:<\/p>\n To create a new database for the user:<\/p>\n By default, PostgreSQL is configured to only accept connections from localhost. To enable remote connections securely, follow these steps:<\/p>\n 1. Edit the main configuration file:<\/p>\n 2. Find the listen_addresses<\/strong> line and change it:<\/p>\n 3. Update the pg_hba.conf<\/strong> file for host-based authentication:<\/p>\n Add a line for the user ‘sammy’ connecting from a specific IP:<\/p>\n To allow traffic on the default PostgreSQL port (5432), run:<\/p>\n Finally, restart PostgreSQL to apply all changes:<\/p>\n A reliable backup strategy is vital for any database. PostgreSQL offers two primary methods for backing up your data:<\/p>\n In this guide, we’ve explored the essential steps to install and configure PostgreSQL on Ubuntu. From setting up roles and databases to enabling secure remote access and establishing a backup strategy, you now have a robust foundation for managing your databases. As you move forward, consider diving deeper into database design and security best practices to optimize your PostgreSQL experience.<\/p>\n","protected":false},"excerpt":{"rendered":" Learn how to install PostgreSQL on Ubuntu with our step-by-step guide, ensuring secure configuration and effective database management.<\/p>\n","protected":false},"author":2,"featured_media":2289,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[29,103,108],"class_list":["post-2290","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cyber-security","tag-design","tag-local","tag-security"],"jetpack_featured_media_url":"http:\/\/www.izendestudioweb.com\/articles\/wp-content\/uploads\/2025\/12\/img-ckSW1KJ0bozhOHRdT4KlpNGq.png","_links":{"self":[{"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/posts\/2290","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/comments?post=2290"}],"version-history":[{"count":1,"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/posts\/2290\/revisions"}],"predecessor-version":[{"id":2336,"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/posts\/2290\/revisions\/2336"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/media\/2289"}],"wp:attachment":[{"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/media?parent=2290"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/categories?post=2290"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.izendestudioweb.com\/articles\/wp-json\/wp\/v2\/tags?post=2290"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Prerequisites<\/h2>\n
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Step 1: Updating the System<\/h3>\n
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sudo apt update<\/code><\/li>\n<\/ol>\nStep 2: Installing PostgreSQL<\/h3>\n
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sudo apt install postgresql postgresql-contrib<\/code><\/li>\n<\/ol>\n\n
psql --version<\/code><\/li>\n<\/ol>\n\n
sudo systemctl start postgresql.service<\/code><\/li>\n<\/ol>\nUsing PostgreSQL Roles and Databases<\/h2>\n
Accessing the PostgreSQL Command Line<\/h3>\n
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sudo -i -u postgres<\/code><\/li>\n<\/ol>\n\n
psql<\/code><\/li>\n<\/ol>\n\n
\\q<\/code><\/li>\n<\/ol>\nCreating New Roles and Databases<\/h3>\n
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sudo -u postgres createuser --interactive<\/code><\/li>\n<\/ol>\n\n
sudo -u postgres createdb sammy<\/code><\/li>\n<\/ol>\nEnabling Remote Access Securely<\/h2>\n
Configuring PostgreSQL<\/h3>\n
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sudo nano \/etc\/postgresql\/17\/main\/postgresql.conf<\/code><\/li>\n<\/ol>\n\n
listen_addresses = '*'<\/code><\/li>\n<\/ol>\n\n
sudo nano \/etc\/postgresql\/17\/main\/pg_hba.conf<\/code><\/li>\n<\/ol>\n\n
host all sammy 203.0.113.10\/32 scram-sha-256<\/code><\/li>\n<\/ol>\nFirewall Configuration<\/h3>\n
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sudo ufw allow 5432\/tcp<\/code><\/li>\n<\/ol>\n\n
sudo systemctl restart postgresql<\/code><\/li>\n<\/ol>\nBackup and Recovery Strategies<\/h2>\n
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pg_dump<\/code> utility to create a backup file containing SQL commands.<\/li>\npg_basebackup<\/code> along with Write-Ahead Logs (WAL) for Point-in-Time Recovery (PITR).<\/li>\n<\/ul>\nConclusion<\/h2>\n