chris

Amazon Linux 2 — librepo — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — librepo — vulnerability — 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 ALAS2-2020-1568 Related CVEs: CVE-2020-14352 Upstream summary: A flaw was found in librepo. A directory traversal vulnerability was found where it failed to sanitize paths in remote repository metadata. An attacker […]

Read more
How to Take ZFS Snapshots on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Take ZFS Snapshots on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up take zfs snapshots on freebsd 12 on FreeBSD 12 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 distribution. […]

Read more
Scaling Ruby on Rails: Setting Up A Dedicated MySQL Server (part 2) — step-by-step Databases tutorial on Progressive Robot

Scaling Ruby on Rails: Setting Up A Dedicated MySQL Server (part 2)

In this second part of our Scaling-Rails the cloud provider article series, we are going to see how to create a droplet to host the database layer, for application servers to connect-to and work-with. Our aim here is to minimize the chances of letting a Single Point of Failure (SPoF) emerge as a possible culprit of downtime (or loss), by distinctively delegating one single task per server.

Read more
How To Install Apache Kafka on Debian 10 — step-by-step Linux tutorial on Progressive Robot

How To Install Apache Kafka on Debian 10

Apache Kafka is a popular distributed message broker designed to efficiently handle large volumes of real-time data. In this tutorial, you will install and configure Apache Kafka 2.1.1 securely on a Debian 10 server, then test your setup by producing and consuming a Hello World message. You will then optionally install KafkaT to monitor Kafka and set up a Kafka multi-node cluster.

Read more
Oracle Linux 8 — libvncserver — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — libvncserver — vulnerability — patch and remediation guide (ELSA-2020-3385)

🟠 High   ⏱ 15–60 min  Last verified: 13 August 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-3385 Related CVEs: CVE-2017-18922 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Debian 10 — golang-1.11 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — golang-1.11 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 August 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-9512 CVE-2019-16276 CVE-2019-17596 CVE-2020-7919 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

Read more
How to Install PHP 7.4 with PHP-FPM on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install PHP 7.4 with PHP-FPM on Debian 10

Introduction How to Install PHP 7.4 with PHP-FPM on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

Read more
CHAT