Kernel Drivers

How to Set Up Loki and Promtail on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up Loki and Promtail on FreeBSD 13

Introduction How to Set Up Loki and Promtail 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 […]

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Common Problems 112984

Windows Server 2016 — Group nesting depth limit hit causing membership not to resolve — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 7 September 2021 Affected versions: Windows Server 2016 📖 ~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 Enable the Active Directory Recycle Bin on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Enable the Active Directory Recycle Bin on Windows Server 2012 R2

How to Enable the Active Directory Recycle Bin on Windows Server 2012 R2 The Active Directory Recycle Bin is a feature that allows administrators to restore accidentally deleted AD objects — including users, groups, computers, and OUs — without requiring a authoritative restore from backup or restarting in DSRM mode. Introduced in Windows Server 2008 […]

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Common Problems 118546

Ubuntu 16.04 LTS – OOM killer terminates critical services

🔴 Critical   ⏱ 5–30 min  Last verified: 6 September 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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How to Configure HashiCorp Vault on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure HashiCorp Vault on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure hashicorp vault on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and the […]

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Common Problems 112517

Windows Server 2019 – SMB Direct RDMA driver mismatch causes connection fallback – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 4 September 2021 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 125023

Oracle Linux 8 – Common Problem 006 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 3 September 2021 Affected versions: Oracle Linux 8 📖 ~3 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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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-2021-9057)

🟠 High   ⏱ 15–60 min  Last verified: 3 September 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9057 Related CVEs: CVE-2021-26932 CVE-2021-26930 CVE-2021-26931 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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Debian 10 — xen — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — xen — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 3 September 2021 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-17349 CVE-2020-11739 CVE-2020-25595 CVE-2020-27670 CVE-2020-29479 CVE-2021-0089 CVE-2021-26933 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 Use Podman on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Use Podman on FreeBSD 13

Introduction How to Use Podman 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, and […]

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