Kernel Drivers

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2021-9451)

  • July 16, 2021
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 16 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9451 Related CVEs: CVE-2021-22543 CVE-2021-3609 CVE-2021-3653 CVE-2021-3573 CVE-2021-3656 CVE-2020-36311 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Configure BitLocker Drive Encryption on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure BitLocker Drive Encryption on Windows Server 2016

How to Set Up Windows Server 2016 BitLocker Drive Encryption BitLocker Drive Encryption is a built-in Windows Server 2016 feature that provides full-volume encryption to protect data at rest. When enabled, BitLocker encrypts the entire volume, preventing unauthorized access to data if drives are physically removed or a server is stolen. This guide covers enabling […]

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Common Problems 112623

Windows Server 2019 — NIC Teaming failover delay creates transient packet blackholes in bonded interfaces — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 14 July 2021 Affected versions: Windows Server 2019 📖 ~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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Common Problems 121661

Debian 9 – Docker overlay2 No Space Left on Device – Host Cleanup Playbook

  • July 13, 2021
  • Linux
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🟠 High   ⏱ 5–30 min  Last verified: 13 July 2021 Affected versions: Debian 9 📖 ~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 115638

Kernel Updated But Old Kernel Still Running – RHEL 7 Post 140

🟡 Medium   ⏱ 5–30 min  Last verified: 13 July 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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Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-7683)

  • July 10, 2021
  • Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 10 July 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7683 Related CVEs: CVE-2022-2078 CVE-2022-21499 CVE-2022-1852 CVE-2022-2938 CVE-2022-26373 CVE-2020-36558 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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Common Problems 117470

Ubuntu 20.04 LTS RAID Array Degraded

  • July 10, 2021
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 10 July 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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Common Problems 112624

Windows Server 2019 — dsregcmd shows hybrid Azure AD join failure on Windows clients — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 July 2021 Affected versions: Windows Server 2019 📖 ~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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How to Set Up IPv6 on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up IPv6 on FreeBSD 13

Introduction How to Set Up IPv6 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 filtering, […]

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