Linux

Arch Linux — ruby-rdoc — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — ruby-rdoc — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-201910-4 Related CVEs: CVE-2015-9251 CVE-2012-6708 Upstream summary: Type: cross-site scripting. Status: Fixed. Affected: 6.1.1-1. Fixed in: 6.1.2-1. Group: AVG-1041. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
Deploying a Rails App on Ubuntu 14.04 with Capistrano, Nginx, and Puma — step-by-step Linux tutorial on Progressive Robot

Deploying a Rails App on Ubuntu 14.04 with Capistrano, Nginx, and Puma

In this tutorial we’ll install Ruby and Nginx on a the cloud provider Ubuntu Droplet and configure Puma and Capistrano in our web app. Nginx will be used to capture client requests and pass them over to the Puma web server running Rails. We’ll use Capistrano to automate common deployment tasks, so every time we have to deploy a new version of our Rails app to the server, we can do that with a few simple commands.

Read more
Arch Linux — zeromq — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — zeromq — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202009-16 Related CVEs: CVE-2020-15166 Upstream summary: Type: denial of service. Status: Fixed. Affected: 4.3.2-3. Fixed in: 4.3.3-1. Group: AVG-1219. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

Read more
How to Configure Docker Networking on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Docker Networking on RHEL 7

How to Configure Docker Networking on RHEL 7 Docker provides a powerful networking model that allows containers to communicate with each other, with the host, and with the outside world in a secure and configurable way. Out of the box, Docker creates a default bridge network and manages its own iptables rules to control traffic […]

Read more
How to Install and Configure ISC DHCP Server on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure ISC DHCP Server on Debian 9

Introduction Deploying install and configure isc dhcp server on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites […]

Read more
Alpine Linux edge — postgresql-common — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — postgresql-common — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 0 📖 ~4 min read  •  Source: Alpine secdb entry — postgresql-common 0 Related CVEs: CVE-2019-3466 Upstream summary: Alpine main repository for vedge ships postgresql-common 0 which addresses CVE-2019-3466. Table of contents Symptom & Impact Environment […]

Read more
Common Problems 120994

Debian 10 – dist-upgrade aborts with held broken packages

🟠 High   ⏱ 5–30 min  Last verified: 27 March 2020 Affected versions: Debian 10 📖 ~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 & […]

Read more
How to Set Up Open-iSCSI on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Open-iSCSI on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up open-iscsi 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 carefully and the […]

Read more
Amazon Linux 2 — ipmitool — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — ipmitool — 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 ALAS2-2020-1420 Related CVEs: CVE-2020-5208 Upstream summary: It's been found that multiple functions in ipmitool before 1.8.19 neglect proper checking of the data received from a remote LAN party, which may […]

Read more
CHAT