Logging Monitoring

How to Build Grafana Dashboards for Linux Server Metrics on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Build Grafana Dashboards for Linux Server Metrics on RHEL 9

Grafana’s dashboard builder lets you turn raw Prometheus metrics into intuitive visualizations — stat panels for at-a-glance health, time series for trends, and bar gauges for comparisons. With Prometheus and Node Exporter already collecting Linux host metrics, you have everything needed to build a production-grade server dashboard. This tutorial walks through creating panels for CPU, […]

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Common Problems 117057

Ubuntu 22.04 sudo Fails in Non-Interactive Jobs with askpass Errors

🟡 Medium   ⏱ 5–30 min  Last verified: 22 November 2022 📖 ~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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Debian 11 — mailman3 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mailman3 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2021-34337 Upstream summary: An issue was discovered in Mailman Core before 3.3.5. An attacker with access to the REST API could use timing attacks to determine the value […]

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Common Problems 111758

Windows Server 2022 — Windows Admin Center gateway service crashes on startup — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 22 November 2022 Affected versions: Windows Server 2022 📖 ~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 Configure Bootlist on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure Bootlist 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 configure bootlist on IBM AIX 7.3 with practical examples […]

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Debian 11 — virglrenderer — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — virglrenderer — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 22 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2016-10163 CVE-2016-10214 CVE-2017-5580 CVE-2017-5937 CVE-2017-5956 CVE-2017-5957 CVE-2017-5993 CVE-2017-5994  +12 more Upstream summary: Memory leak in the vrend_renderer_context_create_internal function in vrend_decode.c in virglrenderer before 0.6.0 allows local guest OS […]

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Debian 11 — node-ssri — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — node-ssri — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-7651 CVE-2021-27290 Upstream summary: index.js in the ssri module before 5.2.2 for Node.js is prone to a regular expression denial of service vulnerability in strict mode functionality via […]

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Gentoo Linux — app-crypt/heimdal — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-crypt/heimdal — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202310-06 Related CVEs: CVE-2019-14870 CVE-2021-44758 CVE-2022-3437 CVE-2022-3671 CVE-2022-41916 CVE-2022-42898 CVE-2022-44640 CVE-2022-44758  +1 more Upstream summary: Multiple vulnerabilities have been discovered in Heimdal, the worst of which could lead to remote code execution […]

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

Debian 11 — ibutils — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 22 November 2022 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2013-2561 Upstream summary: OpenFabrics ibutils 1.5.7 allows local users to overwrite arbitrary files via a symlink attack on (1) ibdiagnet.db, (2) ibdiagnet.fdbs, (3) ibdiagnet_ibis.log, (4) ibdiagnet.log, (5) ibdiagnet.lst, […]

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SLES 15 — hwloc-data — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — hwloc-data — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 22 November 2022 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2022-47022 Upstream summary: An issue was discovered in open-mpi hwloc 2.1.0 allows attackers to cause a denial of service or other unspecified impacts via glibc-cpuset in topology-linux.c. Table of […]

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