IT, Cloud & DevOps Blog

How To Deploy a Rails App with Git Hooks on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Deploy a Rails App with Git Hooks on Ubuntu 14.04

In this tutorial, we will show you how to use Git hooks to automate the deployment of the production environment of your Rails application to a remote Ubuntu 14.04 server. Using Git hooks will allow you to deploy your application by simply pushing your changes to a production server. This particular setup uses a simple “post-receive” Git hook, in addition to Puma as the application server, Nginx as a reverse proxy to Puma, and PostgreSQL as the database.

Read more
Common Problems 121569

Debian 9 Filesystem Remounted Read-Only After Error

🟠 High   ⏱ 5–30 min  Last verified: 12 July 2019 Affected versions: Debian 9 📖 ~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
Common Problems 115120

RHEL 8 kdump Not Capturing vmcore After Kernel Panic

🟡 Medium   ⏱ 5–30 min  Last verified: 12 July 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 […]

Read more
How to Set Up LUKS Disk Encryption on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Set Up LUKS Disk Encryption on SLES 15

Introduction This tutorial covers How to Set Up LUKS Disk Encryption on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: […]

Read more
FreeBSD 12 — php56-psql — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php56-psql — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php5 — multiple vulnerabilities Related CVEs: CVE-2015-4643 CVE-2015-4644 Upstream summary: The PHP project reports: DOM and GD: Fixed bug #69719 (Incorrect handling of paths with NULs). FTP: Improved fix for […]

Read more
openSUSE Tumbleweed — openttd — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — openttd — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE security advisory Related CVEs: CVE-2010-4168 CVE-2012-0049 CVE-2013-6411 CVE-2012-3436 Upstream summary: Multiple use-after-free vulnerabilities in OpenTTD 1.0.x before 1.0.5 allow (1) remote attackers to cause a denial of service (invalid write and daemon crash) […]

Read more
How to Create and Manage LPARs on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Create and Manage LPARs on IBM AIX 7.1

Introduction IBM AIX 7.1 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 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to create and manage lpars on ibm aix 7.1 on […]

Read more
FreeBSD 12 — xscreensaver — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — xscreensaver — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 July 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: xscreensaver – lock bypass Related CVEs: CVE-2015-8025 Upstream summary: RedHat bugzilla reports: In dual screen configurations, unplugging one screen will cause xscreensaver to crash, leaving the screen unlocked. Table of […]

Read more
How to Monitor System Performance with topas on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Monitor System Performance with topas 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 monitor system performance with topas on ibm aix 7.2 […]

Read more
CHAT