Networking

How to Set Up a Kubernetes Dashboard on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up a Kubernetes Dashboard on RHEL 7

How to Set Up a Kubernetes Dashboard on RHEL 7 The Kubernetes Dashboard is a web-based UI that provides a graphical interface for managing cluster resources, viewing workload status, inspecting pod logs, executing commands inside containers, and monitoring resource utilisation. While kubectl provides full cluster control from the command line, the Dashboard is invaluable for […]

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Common Problems 116920

Ubuntu 22.04 LTS UFW Enabled But Ports Still Unreachable

🟡 Medium   ⏱ 5–30 min  Last verified: 15 December 2022 📖 ~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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Common Problems 111656

Windows Server 2022 – Cloud witness authentication fails after storage key rotation – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 December 2022 Affected versions: Windows Server 2022 📖 ~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 Azure Site Recovery for Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Azure Site Recovery for Windows Server 2022

Azure Site Recovery Overview Azure Site Recovery (ASR) is Microsoft’s disaster recovery as a service (DRaaS) solution that replicates on-premises workloads — including physical Windows Server 2022 machines, Hyper-V VMs, and VMware VMs — to Microsoft Azure. In the event of a site failure, ASR enables failover to Azure within minutes, keeping your applications available […]

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HTTP/1.1 vs HTTP/2: What's the Difference? — step-by-step DevOps tutorial on Progressive Robot

HTTP/1.1 vs HTTP/2: What’s the Difference?

After reading this article, you will understand the main differences between HTTP/1.1 and HTTP/2, concentrating on the technical changes that have been adopted in HTTP/2. From the release of HTTP/1.1 in 1997 until recently, there have been few revisions to the protocol. But in 2015, a reimagined version called HTTP/2 came into use, which offered several methods to decrease latency, especially when dealing with mobile platforms and server-intensive graphics and videos.

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How to Install Perl on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Perl on FreeBSD 12

Introduction How to Install Perl on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 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 filtering, and […]

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How to Install Symfony 7 on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install Symfony 7 on RHEL 9

Symfony is a mature, enterprise-grade PHP framework built on reusable, decoupled components. Unlike Laravel’s all-in-one approach, Symfony emphasises architectural flexibility — many of its components (HttpFoundation, Console, Validator, Security, DependencyInjection) are used independently by other frameworks including Laravel itself. Symfony’s Dependency Injection Container, event dispatcher, and strict coding standards make it the preferred framework for […]

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How to Configure Windows Server for SAML/SSO Integration on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Windows Server for SAML/SSO Integration on Windows Server 2022

Understanding SAML 2.0 and Federated Identity Security Assertion Markup Language 2.0 (SAML 2.0) is an open XML-based standard for exchanging authentication and authorization data between an Identity Provider (IdP) and a Service Provider (SP). It is the dominant protocol for enterprise Single Sign-On (SSO) integration with web applications such as Salesforce, ServiceNow, AWS, and hundreds […]

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Common Problems 115477

Network Service Conflict Between NetworkManager and Legacy Scripts

🟡 Medium   ⏱ 5–30 min  Last verified: 13 December 2022 📖 ~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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Common Problems 115422

DNS resolution intermittently fails

🟡 Medium   ⏱ 5–30 min  Last verified: 13 December 2022 📖 ~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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