web server

How to Configure Apache Virtual Hosts on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Apache Virtual Hosts on RHEL 7

How to Configure Apache Virtual Hosts on RHEL 7 Apache virtual hosts allow a single Apache HTTP Server instance to serve multiple websites on the same server, distinguishing between sites based on the incoming domain name (name-based virtual hosting) or IP address. This is the standard approach for hosting multiple websites on a shared server. […]

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

How to Install Ansible on RHEL 7

How to Install Ansible on RHEL 7 Ansible is an agentless automation platform that lets you manage servers, deploy applications, and orchestrate complex workflows using simple YAML-based playbooks. Unlike other configuration management tools, Ansible requires no daemon or database on managed nodes — it connects over SSH and executes tasks on demand. On Red Hat […]

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Common Problems 115138

Cockpit Web Console Unreachable on Port 9090 – RHEL 8 Post 169

🟡 Medium   ⏱ 5–30 min  Last verified: 2 October 2021 📖 ~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 Nginx FastCGI Caching on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Nginx FastCGI Caching on FreeBSD 13

Introduction How to Configure Nginx FastCGI Caching on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 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 packet […]

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How to Configure sudo and Sudoers on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure sudo and Sudoers on RHEL 7

How to Configure sudo and Sudoers on RHEL 7 On a Red Hat Enterprise Linux 7 system, it is a fundamental security best practice to avoid performing routine administrative tasks directly as the root user. The sudo utility allows designated regular users to execute specific commands — or all commands — with root-level privileges, while […]

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Common Problems 113519

Windows Server 2012 R2 – IIS Windows Authentication Negotiate failing after binding changes – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 26 September 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Set Up System Center Service Manager on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Set Up System Center Service Manager on Windows Server 2016

How to Set Up Windows Server 2016 Service Manager System Center Service Manager (SCSM) is the IT Service Management (ITSM) component of Microsoft’s System Center suite. It provides an integrated platform for incident management, problem management, change management, release management, and a self-service portal based on the IT Infrastructure Library (ITIL) framework. Service Manager on […]

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How to Use PowerShell Remoting for Automated Server Management on Windows Server 2012 R2 — Windows Server 2012 R2 tutorial on Progressive Robot

How to Use PowerShell Remoting for Automated Server Management on Windows Server 2012 R2

How to Use PowerShell Remoting for Automated Server Management on Windows Server 2012 R2 PowerShell Remoting enables you to execute commands and scripts on remote Windows servers over WinRM, the Windows implementation of the WS-Management protocol. This capability transforms PowerShell from a local automation tool into a distributed management platform, allowing a single administrator or […]

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Common Problems 115454

SELinux Denies httpd Outbound Network Connections

🟡 Medium   ⏱ 5–30 min  Last verified: 19 September 2021 📖 ~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 Secure Nginx with Let's Encrypt on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Secure Nginx with Let’s Encrypt on SLES 15

Introduction This tutorial covers How to Secure Nginx with Let’s Encrypt on SLES 15 on SLES 15. SLES 15 (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 15 system is up to date: […]

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