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8 pages in this section.
What "cluster" actually means in PostgreSQL, why one initdb creates a single shared instance for every database on it, and the mental model that makes the rest of this section's installation pages make sense.
Install PostgreSQL 18 on Debian/Ubuntu, RHEL/Rocky/Alma, and other platforms. Learn to verify existing installations and use official packages.
Learn how initdb creates a PostgreSQL data directory (PGDATA), its layout, key configuration files, and practical usage examples.
Configure pg_hba.conf to control client connections to PostgreSQL databases. Learn to specify addresses, authentication methods, and user roles.
Manage PostgreSQL services on Linux using systemd commands. Learn to start, stop, reload, and check status, including pg_ctl equivalents.
Learn best practices for installing PostgreSQL clusters, covering platform, storage, and configuration to ensure stability and audit compliance.
A single-page roundup of every highlight bullet from the 7 pages in the Installation section, grouped by source page so you can scan all 40 takeaways without opening each article individually.