Database

How to Configure Nginx Server Blocks (Virtual Hosts) on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install OpenLiteSpeed Web Server on Ubuntu 26.04

OpenLiteSpeed (OLS) is a high-performance, event-driven open-source web server from LiteSpeed Technologies. It supports PHP via LiteSpeed SAPI (LSPHP) and includes a built-in WebAdmin GUI. It is significantly faster than Apache for PHP workloads and is a popular choice for WordPress hosting. This guide installs and configures OLS on Ubuntu 26.04 LTS. Tested and valid […]

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How to Set Up ProxySQL for MySQL Load Balancing on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up ProxySQL for MySQL Load Balancing on FreeBSD 15

Introduction FreeBSD 15 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up proxysql for mysql load balancing on FreeBSD 15 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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How to Install MongoDB on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install MongoDB on FreeBSD 15

Introduction Deploying install mongodb on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + ports approach so […]

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Common Problems 115918

Ubuntu 26.04 LTS – dpkg interrupted state blocks package installs – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 August 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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Common Problems 116116

Bluetooth Adapter Missing or Pairing Fails

🟡 Medium   ⏱ 5–30 min  Last verified: 1 August 2026 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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How to Configure PHP-FPM with Nginx on Ubuntu 26.04 — step-by-step Linux tutorial on Progressive Robot

How to Install PHP 8.4 on Ubuntu 26.04

PHP 8.4 is the latest stable release of PHP, bringing property hooks, new array functions, improved JIT performance, and deprecation of outdated features. This guide installs PHP 8.4 on Ubuntu 26.04 LTS using both the default Ubuntu repositories and the popular Ondrej Sury PPA. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]

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How to Set Up MongoDB Replica Set on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Set Up MongoDB Replica Set on FreeBSD 15

Introduction How to Set Up MongoDB Replica Set on FreeBSD 15 is a core administration task for any FreeBSD 15 server operator. FreeBSD 15 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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How to Install MariaDB on FreeBSD 15 — step-by-step FreeBSD 15 tutorial on Progressive Robot

How to Install MariaDB on FreeBSD 15

Introduction Deploying install mariadb on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + ports approach so […]

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How to Tune Linux Kernel Parameters with sysctl on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Tune Linux Kernel Parameters with sysctl on RHEL 9

The Linux kernel exposes hundreds of tunable parameters through the sysctl interface, allowing system administrators to optimize network throughput, memory management, and file descriptor limits without recompiling the kernel. On RHEL 9, these tunables persist across reboots when placed in drop-in configuration files under /etc/sysctl.d/. Proper kernel tuning can dramatically reduce latency and increase throughput […]

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How to Set Up MySQL with SSL on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Set Up MySQL with SSL on SLES 16

Introduction This tutorial covers How to Set Up MySQL with SSL on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: […]

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