Logging Monitoring

How to Configure GlusterFS Distributed Storage on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure GlusterFS Distributed Storage on RHEL 9

GlusterFS is a scalable, distributed file system that aggregates storage from multiple servers into a single, unified namespace accessible over the network. Unlike block-level solutions such as iSCSI or Ceph, GlusterFS operates at the file level and requires no metadata server, making it straightforward to deploy and maintain. On RHEL 9, GlusterFS is available through […]

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Alpine Linux edge — cifs-utils — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — cifs-utils — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 6.15-r0 📖 ~4 min read  •  Source: Alpine secdb entry — cifs-utils 6.15-r0 Related CVEs: CVE-2022-27239 CVE-2022-29869 CVE-2021-20208 CVE-2020-14342 Upstream summary: Alpine main repository for vedge ships cifs-utils 6.15-r0 which addresses CVE-2022-27239. Table of contents Symptom […]

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Common Problems 116950

Ubuntu 22.04 LTS DNS Resolution Intermittently Fails with systemd-resolved

🟡 Medium   ⏱ 5–30 min  Last verified: 4 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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How to Use xlC C/C++ Compiler on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use xlC C/C++ Compiler on IBM AIX 7.3

Introduction IBM AIX 7.3 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use xlc c/c++ compiler on IBM AIX 7.3 with […]

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Debian 11 — python-mistralclient — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — python-mistralclient — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-4472 Upstream summary: The mistral-dashboard plugin for openstack has a local file inclusion vulnerability through the 'Create Workbook' feature that may result in disclosure of arbitrary local files […]

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Debian 11 — samizdat — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — samizdat — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2009-0359 Upstream summary: Multiple cross-site scripting (XSS) vulnerabilities in Samizdat before 0.6.2 allow remote authenticated users to inject arbitrary web script or HTML via the (1) message title […]

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Debian 11 — lightdm-gtk-greeter — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — lightdm-gtk-greeter — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 January 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2014-0979 Upstream summary: The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local […]

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Ubuntu 14.04 — unzip — multiple vulnerabilities (17 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — unzip — multiple vulnerabilities (17 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 4 January 2023 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5673-1 Related CVEs: CVE-2021-4217 CVE-2022-0529 CVE-2022-0530 https://launchpad.net/bugs/1957077 CVE-2014-9913 CVE-2016-9844 CVE-2018-1000035 CVE-2018-18384  +9 more Upstream summary: It was discovered that unzip did not properly handle unicode strings under certain circumstances. If […]

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How to Set Up NTLM Security on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up NTLM Security on Windows Server 2019

Introduction to NTLM Security NTLM (NT LAN Manager) is a challenge-response authentication protocol used by Windows when Kerberos is not available—for example when accessing resources by IP address instead of hostname, in workgroup environments, or when connecting to legacy systems. While Kerberos is the preferred protocol, NTLM is still present in virtually all Windows environments […]

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Amazon Linux 2 — libsndfile — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — libsndfile — multiple vulnerabilities (5 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 ALAS2-2021-1713 Related CVEs: CVE-2021-3246 CVE-2022-33065 CVE-2021-4156 CVE-2018-13139 CVE-2018-19662 Upstream summary: A heap buffer overflow flaw was found in libsndfile. This flaw allows an attacker to execute arbitrary code via a […]

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