Linux

Cómo instalar Nginx en Debian 9 — step-by-step Linux tutorial on Progressive Robot

Cómo instalar Nginx en Debian 9

Nginx es uno de los servidores web más populares del mundo y aloja algunos de los sitios más grandes y de mayor tráfico de Internet. Es más fácil de utilizar que Apache en la mayoría de los casos y puede emplearse como servidor web o proxy inverso. En…

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Oracle Linux 8 — libpq — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libpq — vulnerability — patch and remediation guide (ELSA-2023-7016)

🟢 Low   ⏱ 5–15 min  Last verified: 1 April 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-7016 Related CVEs: CVE-2022-41862 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Set Up Grafana Alerting and Notification Channels on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Grafana Alerting and Notification Channels on RHEL 7

How to Set Up Grafana Alerting and Notification Channels on RHEL 7 Grafana’s alerting system transforms your monitoring dashboards from a passive display into an active early-warning network. When a metric crosses a threshold — CPU saturation, disk exhaustion, an elevated error rate — Grafana fires an alert and routes a notification to whichever channels […]

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Common Problems 124527

Oracle Linux 9 – Common Problem 007 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 31 March 2023 Affected versions: Oracle Linux 9 📖 ~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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openSUSE Tumbleweed — swtpm — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — swtpm — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2022:1101-1 (see also SUSE bugzilla) Related CVEs: CVE-2022-23645 CVE-2020-28407 Upstream summary: swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 […]

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Ubuntu 22.04 — busybox — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — busybox — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 31 March 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6961-1 Related CVEs: CVE-2022-48174 CVE-2023-42363 CVE-2023-42364 CVE-2023-42365 Upstream summary: It was discovered that BusyBox did not properly validate user input when performing certain arithmetic operations. If a user or automated […]

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How to Install k3s Lightweight Kubernetes on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install k3s Lightweight Kubernetes on RHEL 9

k3s is a lightweight, certified Kubernetes distribution designed for resource-constrained environments, edge computing, IoT devices, and development workstations. Created by Rancher (now SUSE), k3s packages the entire Kubernetes control plane into a single binary under 100 MB, removing cloud-provider integrations, storage drivers, and alpha features that are not needed in most deployments. k3s uses SQLite […]

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openSUSE Tumbleweed — rtl_433 — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — rtl_433 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory (see also SUSE bugzilla) Related CVEs: CVE-2022-27419 Upstream summary: rtl_433 21.12 was discovered to contain a stack overflow in the function acurite_00275rm_decode at /devices/acurite.c. This vulnerability allows attackers to cause a […]

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