Category: Rocky Linux

Learn how to change a Rocky Linux hostname with hostnamectl, verify the persistent setting, and check name resolution and services afterward.

A practical Rocky Linux administration reference covering packages, services, networking, storage, security controls, logs, and frequently used maintenance commands.

Install PostgreSQL on Rocky Linux, initialize the database cluster, enable the service, create a database and user, and review network and authentication settings.

Install MariaDB on Rocky Linux, enable the database service, complete the initial security setup, create a database and account, and verify access.

Install a graphical desktop on Rocky Linux, select the graphical boot target, configure remote access, and review firewall and security considerations.

Use DNF and RPM to list, search, count, and inspect installed packages on Rocky Linux and identify which package owns a file.

Configure and verify a static IPv4 address on Rocky Linux with NetworkManager, including the gateway, DNS servers, connection profile, and safe remote-change checks.

Check and change SELinux enforcing, permissive, and disabled modes on Rocky Linux, understand temporary and persistent changes, and troubleshoot denials safely.

Use DNF on Rocky Linux to search, install, remove, update, and inspect packages and repositories while keeping package-management changes controlled.

Review how root SSH login is controlled on Rocky Linux, why direct root access is risky, and how to change and verify sshd settings without losing remote access.