DNS

How to Configure Windows Server Software-Defined Networking (SDN) on Windows Server 2022

• May 18, 2023
• Tutorials
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Introduction to Software-Defined Networking on Windows Server 2022 Software-Defined Networking (SDN) on Windows Server 2022 is a Microsoft implementation of a full-stack network virtualisation solution that decouples the network control plane from the data plane, allowing centralised programmatic management of the entire network fabric. Rather than configuring individual switches, routers, and firewalls device by device, […]

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How to Configure the Firewall on RHEL 8

• May 18, 2023
• Linux
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RHEL 8 ships with firewalld as its default firewall management layer, replacing the older iptables static ruleset approach with a dynamic, zone-based model. Zones define the level of trust assigned to network interfaces and traffic sources, and rules can be added or removed at runtime without flushing the entire ruleset. This guide covers the essential […]

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Oracle Linux 9 – Common Problem 006 – Diagnosis and Fix

• May 17, 2023
• Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 17 May 2023 Affected versions: Oracle Linux 9 📖 ~2 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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RHEL 7 yum Lock Held by PackageKit

• May 17, 2023
• Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 17 May 2023 Affected versions: RHEL 7 📖 ~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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Windows Server 2022 — Data Deduplication Optimization Jobs Stuck in Queued State — Fix & Prevention

• May 17, 2023
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🟡 Medium   ⏱ 5–30 min  Last verified: 17 May 2023 Affected versions: Windows Server 2022 📖 ~1 min read Table of contents Symptom & Impact Quick Checks Deep Diagnosis Primary Fix Verification Prevention & Hardening Symptom & Impact Dedup jobs remain queued for extended periods, reducing expected storage savings and increasing backup footprint. Volumes […]

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How to Set Up Active Directory Backup and Recovery on Windows Server 2022

• May 17, 2023
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Understanding Active Directory Sites and Services Active Directory Sites and Services is the component of AD DS responsible for managing the physical topology of your network — how domain controllers are grouped by network location, how replication traffic flows between them, and how clients are directed to the nearest domain controller for authentication. Proper site […]

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How to Set Up Zabbix on Oracle Linux 9

• May 16, 2023
• Oracle Linux
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Introduction Setting up set up zabbix on oracle linux 9 on a Oracle Linux 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up Zabbix on Oracle Linux 9, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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Systemd Service Fails At Boot But Works Manually

• May 16, 2023
• Tutorials
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🟡 Medium   ⏱ 5–30 min  Last verified: 16 May 2023 📖 ~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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Windows Server 2022 — Group Policy modelling results differ from live enforcement — Fix & Prevention

• May 16, 2023
• Tutorials
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🟡 Medium   ⏱ 5–30 min  Last verified: 16 May 2023 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 Set Up Windows Server 2022 Network Monitoring

• May 16, 2023
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Introduction to Terraform on Windows Server 2022 Terraform is an open-source Infrastructure as Code (IaC) tool developed by HashiCorp that allows you to define, provision, and manage cloud and on-premises infrastructure using a declarative configuration language called HCL (HashiCorp Configuration Language). Running Terraform on Windows Server 2022 is fully supported and is common in enterprise […]

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