Kernel Drivers

How to Configure Windows Server 2022 Backup and Recovery — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Windows Server 2022 Backup and Recovery

Understanding Windows Update on Server 2022 Keeping Windows Server 2022 up to date is one of the most fundamental security and stability responsibilities of any system administrator. Microsoft releases cumulative updates for Windows Server 2022 on the second Tuesday of each month (Patch Tuesday), with additional out-of-band security updates released as needed for critical vulnerabilities. […]

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Common Problems 121613

Debian 9: kubelet not starting due to cgroup driver mismatch

🟠 High   ⏱ 5–30 min  Last verified: 19 January 2023 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 116962

Ubuntu 22.04 black screen after NVIDIA driver update

🟡 Medium   ⏱ 5–30 min  Last verified: 19 January 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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Amazon Linux 2 — kernel-livepatch-5.10.126-117.518 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-5.10.126-117.518 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2022-090 Related CVEs: CVE-2022-34918 Upstream summary: A heap buffer overflow flaw was found in the Linux kernel's Netfilter subsystem in the way a user provides incorrect input of the NFT_DATA_VERDICT […]

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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-2022-9829)

🟠 High   ⏱ 15–60 min  Last verified: 18 January 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9829 Related CVEs: CVE-2022-21546 CVE-2022-1280 CVE-2021-3669 CVE-2022-2586 CVE-2022-21385 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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How to Configure SNMP Monitoring on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure SNMP Monitoring on RHEL 9

SNMP (Simple Network Management Protocol) is the universal language of network device monitoring, supported by routers, switches, UPS units, printers, and hundreds of other appliances. On RHEL 9 you can both expose your Linux server as an SNMP agent and query remote devices from the command line. This tutorial covers installing net-snmp, writing a secure […]

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How to Deploy a Node.js Application with PM2 on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Deploy a Node.js Application with PM2 on RHEL 9

PM2 is a production-grade process manager for Node.js applications. Running a Node.js app directly with node server.js has a critical limitation: if the process crashes, it stays down until someone manually restarts it. PM2 solves this and much more — it automatically restarts crashed processes, starts applications on system boot, enables zero-downtime reloads for application […]

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Amazon Linux 2 — kernel-livepatch-4.14.314-238.539 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.314-238.539 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2023-134 Related CVEs: CVE-2023-3090 CVE-2023-28466 Upstream summary: A heap out-of-bounds write vulnerability in the Linux Kernel ipvlan network driver can be exploited to achieve local privilege escalation. The out-of-bounds write […]

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Common Problems 117013

Ubuntu 22.04 LTS – ext4 filesystem remounts read-only under I/O errors – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 15 January 2023 Affected versions: Ubuntu 22.04 LTS 📖 ~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 DirectAccess on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up DirectAccess on Windows Server 2022

Why PowerShell Logging Matters for Security PowerShell is the most powerful scripting environment on Windows Server 2022, and that power makes it a favourite tool for both administrators and attackers. Malware, ransomware loaders, and post-exploitation frameworks such as Empire, Cobalt Strike, and Metasploit all leverage PowerShell heavily. Without logging, PowerShell activity is largely invisible — […]

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