chris

How to Build Grafana Dashboards for FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Build Grafana Dashboards for FreeBSD 13

Introduction This guide explains how to Build Grafana Dashboards for FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege […]

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How To Set Up Replication in MySQL — step-by-step Databases tutorial on Progressive Robot

How To Set Up Replication in MySQL

MySQL replication is a process that allows you to easily maintain multiple copies of a MySQL data by having them copied automatically from a master to a slave database. This can helpful for many reasons including facilating a backup for the data,a way to analyze it without using the main database, or simply as a means to scale out.

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Oracle Linux 8 — Kernel Issues — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Kernel Issues (OL8-ISSUES-KERNEL)

🟠 High   ⏱ 5–30 min  Last verified: 18 September 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug OLRNT-ol8-issues-kernel 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 […]

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AlmaLinux 8 — libstoragemgmt — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libstoragemgmt — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2022:2035 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Configure GELI Disk Encryption on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure GELI Disk Encryption on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure geli disk encryption on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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Python for loop — step-by-step Python tutorial on Progressive Robot

Python for loop

Let’s explore the Python for loop in detail and learn to iterate over different sequences including lists, tuples, and more.

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IBM AIX 7.2 — CVE-2021-39087 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.2

IBM AIX 7.2 — CVE-2021-39087 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 18 September 2021 Affected versions: IBM AIX 7.2 📖 ~4 min read  •  Source: NVD CVE-2021-39087, IBM Support Bulletin CVE: CVE-2021-39087 NVD summary: IBM Sterling B2B Integrator Standard Edition 6.0.0.0 through 6.0.3.5, 6.1.0.0 through 6.1.0.4, and 6.1.1.0 through 6.1.1.1 could allow an authenticated user to obtain sensitive […]

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FreeBSD 13 — gtk-vnc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — gtk-vnc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 September 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: gtk-vnc — bounds checking vulnerabilities Related CVEs: CVE-2017-5884 CVE-2017-5885 Upstream summary: Daniel P. Berrange reports: CVE-2017-5884 – fix bounds checking for RRE, hextile and copyrect encodings CVE-2017-5885 – fix color […]

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AlmaLinux 8 — qt5-qtx11extras — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — qt5-qtx11extras — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:4172 Related CVEs: CVE-2021-3481 Upstream summary: Qt is a software toolkit for developing applications. The following packages have been upgraded to a later upstream version: adwaita-qt (1.2.1), python-qt5 (5.15.0), qgnomeplatform (0.7.1), qt5 […]

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