Troubleshooting

How to Configure Group Policy on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Group Policy on Windows Server 2016

How to Configure Windows Server 2016 Group Policy Group Policy is a powerful feature of Active Directory that enables centralized management and configuration of operating systems, applications, and user settings across an Active Directory environment. In Windows Server 2016, Group Policy is administered through the Group Policy Management Console (GPMC) and uses Group Policy Objects […]

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Oracle Linux 8 — kernel — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — security and stability fixes — required update (ELSA-2020-5473)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 November 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-5473 Related CVEs: CVE-2020-16166 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Common Problems 115451

Legacy service Command Fails for SysV Script on RHEL 7

🟡 Medium   ⏱ 5–30 min  Last verified: 28 November 2020 📖 ~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 112577

Windows Server 2019 — Netlogon service breaks secure channel with PDC emulator — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 November 2020 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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Common Problems 112468

Windows Server 2019 — Post-Update Boot Loop Triggered by Incompatible Storage Driver — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 November 2020 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 Implement Just-In-Time (JIT) Administration on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Implement Just-In-Time (JIT) Administration on Windows Server 2016

Introduction Just-In-Time (JIT) Administration on Windows Server 2016 is a Privileged Access Management (PAM) model that grants elevated privileges only when needed and only for the minimum time required to complete a task. Using the PAM feature in Active Directory (introduced in Windows Server 2016), administrators request time-limited group membership that expires automatically after a […]

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How to Install HAProxy on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install HAProxy on Oracle Linux 8

Introduction Setting up install haproxy 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 Install HAProxy on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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How to Configure Drone CI on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Drone CI on Debian 9

Introduction This guide explains how to Configure Drone CI on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard […]

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SLES 15 — go1.13 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — go1.13 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 28 November 2020 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2020-7919 CVE-2020-15586 CVE-2020-14039 CVE-2020-16845 Upstream summary: Go before 1.12.16 and 1.13.x before 1.13.7 (and the crypto/cryptobyte package before 0.0.0-20200124225646-8b5121be2f68 for Go) allows attacks on clients […]

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How to Configure DHCP Policies on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure DHCP Policies on Windows Server 2019

Introduction to DHCP Policies on Windows Server 2019 DHCP Policies allow the Windows Server 2019 DHCP server to assign different configuration options — including IP address ranges, lease durations, default gateways, DNS servers, and custom options — to clients based on attributes of the DHCP request itself. Without policies, all clients in a scope receive […]

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