chris

How To Deploy a Go Web Application Using Nginx on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Deploy a Go Web Application Using Nginx on Ubuntu 18.04

In this tutorial, you will build a “Hello World” web application in Go and deploy it on an Ubuntu 18.04 server using Nginx as a reverse proxy. Go is a general-purpose programming language that is gradually becoming one of the most popular web back-end programming languages. Nginx is one of the most used web servers in the world due to its lightweight resource usage and its reliability under load.

Read more
Alpine Linux edge — hylafaxplus — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — hylafaxplus — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 7.0.2-r2 📖 ~4 min read  •  Source: Alpine secdb entry — hylafaxplus 7.0.2-r2 Related CVEs: CVE-2020-15396 CVE-2020-15397 Upstream summary: Alpine community repository for vedge ships hylafaxplus 7.0.2-r2 which addresses CVE-2020-15396. Table of contents Symptom & Impact […]

Read more
Ubuntu 18.04 — ruby-gon — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — ruby-gon — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 21 November 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4560-1 Related CVEs: CVE-2020-25739 Upstream summary: It was discovered that Gon gem did not properly escape certain input. An attacker could use this vulnerability to execute a cross-site scripting (XSS) […]

Read more
Oracle Linux 8 — squid:4 security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — squid:4 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4743)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 November 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4743 Related CVEs: CVE-2019-18676 CVE-2019-18679 CVE-2019-12526 CVE-2019-12854 CVE-2019-12523 CVE-2019-18677 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
Common Problems 119029

Ubuntu 14.04 LTS – apt update returns 404 from archive mirrors

🟠 High   ⏱ 5–30 min  Last verified: 21 November 2020 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 […]

Read more
Common Problems 118978

Ubuntu 14.04 LTS SSH Public Key Login Suddenly Fails

🟡 Medium   ⏱ 5–30 min  Last verified: 21 November 2020 📖 ~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 […]

Read more
Common Problems 117631

Ubuntu 20.04 LTS Recurring ext4 Journal Errors on Reboot

🟠 High   ⏱ 5–30 min  Last verified: 21 November 2020 Affected versions: 20.04 LTS 📖 ~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 iSCSI Initiator on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up iSCSI Initiator on Oracle Linux 8

Introduction Setting up set up iscsi initiator on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up iSCSI Initiator on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to […]

Read more
How to Configure RACF Integration on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure RACF Integration on IBM AIX 7.2

Introduction IBM AIX 7.2 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure racf integration on ibm aix 7.2 on IBM […]

Read more
CHAT