DNS

How to Set Up NFS File Sharing on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Set Up NFS File Sharing on Oracle Linux 10

Introduction Setting up set up nfs file sharing on oracle linux 10 on a Oracle Linux 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up NFS File Sharing on Oracle Linux 10, with all the commands you need, the SELinux and firewalld […]

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Alpine Linux edge — pdns — multiple vulnerabilities (16 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — pdns — multiple vulnerabilities (16 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 5.0.4-r0 📖 ~4 min read  •  Source: Alpine secdb entry — pdns 5.0.4-r0 Related CVEs: CVE-2026-33257 CVE-2026-33260 CVE-2026-33611 CVE-2026-33610 CVE-2026-33609 CVE-2026-33608 CVE-2022-27227 CVE-2021-36754  +8 more Upstream summary: Alpine community repository for vedge ships pdns 5.0.4-r0 which […]

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Common Problems 113976

RHEL 10 nftables and firewalld Direct Rules Conflict

🟠 High   ⏱ 5–30 min  Last verified: 25 February 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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Common Problems 114488

Kernel Updated But Old Kernel Still Running

🟡 Medium   ⏱ 5–30 min  Last verified: 25 February 2026 📖 ~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 114090

RHEL 10 – tuned profile changes are ignored after kernel update – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 February 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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Alpine Linux 3.19 — unbound — multiple vulnerabilities (14 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — unbound — multiple vulnerabilities (14 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 1.9.5-r0 📖 ~4 min read  •  Source: Alpine secdb entry — unbound 1.9.5-r0 Related CVEs: CVE-2019-18934 CVE-2019-16866 CVE-2025-5994 CVE-2025-11411 CVE-2024-8508 CVE-2024-33655 CVE-2024-1931 CVE-2023-50387  +6 more Upstream summary: Alpine main repository for vv3.19 ships unbound 1.9.5-r0 which […]

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Oracle Linux 9 — bind — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — bind — vulnerability — patch and remediation guide (ELSA-2025-21110)

🟠 High   ⏱ 15–60 min  Last verified: 24 February 2026 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-21110 Related CVEs: CVE-2025-40778 CVE-2025-40780 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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Common Problems 114077

RHEL 10 – tuned profile not applied after reboot causing performance regression – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 February 2026 Affected versions: RHEL 10 📖 ~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 114030

RHEL 10 – NetworkManager connection drops caused by incorrect MTU on VLAN – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 22 February 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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Common Problems 113999

RHEL 10 – SSH public key login denied by SELinux context mismatch – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 21 February 2026 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

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