Networking

How to Set Up a LAMP Stack on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up a LAMP Stack on Oracle Linux 8

Introduction How to Set Up a LAMP Stack on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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Настройка брандмауэра с UFW в Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

Настройка брандмауэра с UFW в Ubuntu 18.04

Предыдущая версия настоящего обучающего модуля составлена Хейзел Вирдо UFW (Uncomplicated Firewall или «простой брандмауэр») представляет собой интерфейс iptables, предназначенный для упрощения процесса настройки…

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How to Install Zabbix on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Zabbix on RHEL 7

How to Install Zabbix on RHEL 7 Zabbix is a mature, enterprise-grade open-source monitoring platform that supports agent-based and agentless monitoring of servers, network devices, applications, and cloud resources. It combines metrics collection, event correlation, alerting, and visualisation in a single self-hosted solution — making it a compelling choice for organisations that need full control […]

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How to Set Up TimescaleDB on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up TimescaleDB on Oracle Linux 8

Introduction Setting up set up timescaledb on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up TimescaleDB on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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How to Set Up SSH Key-Based Authentication on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up SSH Key-Based Authentication on RHEL 7

How to Set Up SSH Key-Based Authentication on RHEL 7 SSH key-based authentication replaces password logins with a cryptographic key pair: a private key that stays on your local machine and a public key that you install on the remote server. When you connect, the server challenges your SSH client to prove it holds the […]

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How to Install PHP on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install PHP on RHEL 8

PHP is the most widely used server-side scripting language on the web, powering platforms like WordPress, Drupal, and countless custom applications. Red Hat Enterprise Linux 8 delivers PHP through its AppStream module system, which lets you install and switch between multiple PHP versions without conflicting packages. This tutorial walks through installing PHP on RHEL 8 […]

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Common Problems 118519

Ubuntu 16.04 LTS MySQL Refuses Connections After Crash Recovery

🟠 High   ⏱ 5–30 min  Last verified: 21 April 2021 Affected versions: 16.04 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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How to Configure Oracle Linux 8 for Container Workloads — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Oracle Linux 8 for Container Workloads

Introduction This tutorial demonstrates how to Configure Oracle Linux 8 for Container Workloads on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the default […]

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How to Configure Active Directory Trust Relationships on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Active Directory Trust Relationships on Windows Server 2019

Introduction to Active Directory Trust Relationships Active Directory trust relationships allow users in one domain or forest to access resources in another domain or forest. Trusts are directional—a trust between Domain A and Domain B means users in Domain A can authenticate to Domain B (or vice versa, depending on direction). Windows Server 2019 supports […]

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How to Enable Credential Guard on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Enable Credential Guard on Windows Server 2012 R2

How to Harden Credential Protection on Windows Server 2012 R2 Protecting credentials from theft is one of the most critical security objectives for any Windows Server environment. Credential Guard, which uses virtualization-based security to isolate credential material from the OS kernel, is a Windows Server 2016 and later feature and is not available on Windows […]

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