Proxy

Common Problems 112555

Windows Server 2019 — OneGet package install fails due to missing or duplicate package provider — Fix & Prevention

🟢 Low   ⏱ 5–30 min  Last verified: 13 August 2019 Affected versions: Windows Server 2019 📖 ~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 Deploy a Ruby on Rails Application on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Deploy a Ruby on Rails Application on RHEL 8

Ruby on Rails is a full-stack web framework that prioritises convention over configuration, making it possible to stand up a production-ready application in minutes. Deploying Rails on RHEL 8 involves generating the application, running database migrations, serving it through the built-in Puma application server, and placing Nginx in front as a reverse proxy. This tutorial […]

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How to Configure Nginx as a Reverse Proxy on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure nginx as a reverse proxy on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from […]

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Common Problems 118075

Ubuntu 18.04 LTS – Python pip install fails due to outdated certificates

🟡 Medium   ⏱ 5–30 min  Last verified: 30 July 2019 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

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Common Problems 112404

Windows Server 2019 — Chocolatey package install fails due to TLS 1.2 handshake error — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 30 July 2019 Affected versions: Windows Server 2019 📖 ~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 Set Up Windows Server 2019 with Grafana — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Windows Server 2019 with Grafana

How to Set Up Windows Server 2019 with Grafana Grafana is an open-source analytics and visualization platform that, when combined with a time-series data source, provides powerful dashboards for Windows Server 2019 monitoring. The typical architecture uses Windows Exporter (formerly wmi_exporter) to expose Prometheus-compatible metrics from Windows Server 2019, a Prometheus server to scrape and […]

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How to Install and Configure Caddy Web Server on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install and Configure Caddy Web Server on RHEL 8

Caddy is a modern, open-source web server written in Go that automatically provisions and renews TLS certificates via Let’s Encrypt. Unlike Apache or Nginx, Caddy requires almost no manual TLS configuration, making it an excellent choice for developers who want HTTPS out of the box. On RHEL 8, Caddy is not available in the default […]

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How to Configure Remote Desktop Gateway on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Remote Desktop Gateway on Windows Server 2012 R2

How to Configure Remote Desktop Gateway on Windows Server 2012 R2 RD Gateway enables Remote Desktop connections from the internet to internal RDS servers or individual Windows computers without requiring a VPN. It wraps RDP traffic in HTTPS (SSL/TLS on port 443), allowing connections through corporate firewalls and NAT devices that typically block port 3389. […]

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How to Set Up a Highly Available Web Stack with Keepalived on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up a Highly Available Web Stack with Keepalived on RHEL 8

A highly available web stack ensures that your application remains accessible even when one of your servers fails. Keepalived implements the Virtual Router Redundancy Protocol (VRRP) on Linux, allowing a floating Virtual IP (VIP) address to migrate automatically between a master and one or more backup servers within seconds of a failure. When combined with […]

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Common Problems 118057

Ubuntu 18.04 Nginx Fails to Start Due to Port 80 Conflict

🟡 Medium   ⏱ 5–30 min  Last verified: 22 July 2019 📖 ~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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