chris

How To Monitor Nagios Alerts with Alerta on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Monitor Nagios Alerts with Alerta on Ubuntu 16.04

Alerta is a web application used to consolidate and de-duplicate alerts from multiple monitoring systems and visualize them on a single screen. Alerta can integrate with many well-known monitoring tools like Nagios, Zabbix, Sensu, InfluxData Kapacitor, and…

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Gentoo Linux — media-sound/schismtracker — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — media-sound/schismtracker — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202107-12 Related CVEs: CVE-2019-14465 CVE-2019-14523 Upstream summary: Multiple vulnerabilities have been discovered in Schism Tracker. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & […]

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How to Install pip and Manage Python Packages on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install pip and Manage Python Packages on Debian 9

Introduction This guide explains how to Install pip and Manage Python Packages on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install […]

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How To Install and Configure GoCD on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure GoCD on Ubuntu 16.04

GoCD is a powerful continuous integration and delivery platform designed to automate testing and release processes. With many advanced features like the ability to compare builds, visualize complex workflows, and automate build version tracking, GoCD…

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Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide (ELSA-2019-1268)

🟠 High   ⏱ 15–60 min  Last verified: 24 September 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1268 Related CVEs: CVE-2019-10132 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 Add and Delete Users on a CentOS 7 Server — step-by-step Linux tutorial on Progressive Robot

How To Add and Delete Users on a CentOS 7 Server

When you first start using a fresh Linux server, adding and removing users is one of the most basic tasks that you should know how to do. In this guide, we will cover how to create user accounts, assign `sudo` privileges, and delete users on a CentOS 7 server.

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Common Problems 119084

Ubuntu 14.04 LTS High iowait Slows Entire System

🟡 Medium   ⏱ 5–30 min  Last verified: 23 September 2019 📖 ~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 & Cross-Refs References & Further […]

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