Linux

How to Monitor MySQL with Prometheus mysqld_exporter on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Monitor MySQL with Prometheus mysqld_exporter on RHEL 7

How to Monitor MySQL with Prometheus mysqld_exporter on RHEL 7 Prometheus is an open-source monitoring system that scrapes metrics from instrumented targets at regular intervals and stores them in a time-series database. For MySQL monitoring, the official mysqld_exporter binary exposes hundreds of MySQL performance schema metrics, InnoDB statistics, replication lag, and query throughput in the […]

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Common Problems 121694

Debian 9 – Fail2ban blocks internal monitoring and trusted hosts

🟡 Medium   ⏱ 5–30 min  Last verified: 3 May 2020 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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Amazon Linux 2 — ibus — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — ibus — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2020-1555 Related CVEs: CVE-2019-14822 Upstream summary: A flaw was discovered in ibus that allows any unprivileged user to monitor and send method calls to the ibus bus of another user […]

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Gentoo Linux — net-misc/openslp — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-misc/openslp — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202005-12 Related CVEs: CVE-2017-17833 CVE-2019-5544 Upstream summary: Multiple vulnerabilities have been discovered in OpenSLP. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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How to Set Up HTTPS Redirect in Apache2 on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up HTTPS Redirect in Apache2 on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up https redirect in apache2 on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step […]

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openSUSE Tumbleweed — adns — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — adns — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2020:0827-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-9103 CVE-2017-9106 CVE-2017-9107 CVE-2017-9108 CVE-2008-1447 Upstream summary: An issue was discovered in adns before 1.5.2. pap_mailbox822 does not properly check st from adns__findlabel_next. Without this, […]

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Comment installer R sur Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Comment installer R sur Ubuntu 20.04

Langage de programmation à code source ouvert, R est largement utilisé pour l’analyse des données et le calcul statistique. Soutenu par la Fondation R pour le calcul statistique, il s’agit d’un langage de plus en plus populaire et extensible, disposant d’une communauté active. R…

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

Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2020-2614)

🟠 High   ⏱ 15–60 min  Last verified: 3 May 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-2614 Related CVEs: CVE-2020-12398 CVE-2020-12405 CVE-2020-12410 CVE-2020-12406 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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