Linux

Common Problems 115515

RHEL 7 Network Scripts Conflict With NetworkManager

🟡 Medium   ⏱ 5–30 min  Last verified: 27 June 2020 Affected versions: RHEL 7 📖 ~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 & […]

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Common Problems 115416

RHEL 7 firewalld Blocking Internal Application Port

🟠 High   ⏱ 5–30 min  Last verified: 27 June 2020 Affected versions: RHEL 7 📖 ~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 & […]

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How to Configure auditd System Auditing on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure auditd System Auditing on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure auditd system auditing on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and […]

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How to Configure Apache2 Virtual Hosts on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Apache2 Virtual Hosts on Debian 10

Introduction Deploying configure apache2 virtual hosts on debian 10 on a Debian 10 Buster 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 Before you […]

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How To Install WordPress on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Install WordPress on CentOS 7

WordPress is a free and open source website and blogging tool that uses PHP and MySQL, and is a great choice for getting a website up and running quickly and easily. In this guide, we will demonstrate how to get a WordPress instance set up with an Apache web server on CentOS 7.

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Ubuntu 18.04 — db5.3 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — db5.3 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 June 2020 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4004-1 Related CVEs: CVE-2019-8457 Upstream summary: It was discovered that Berkeley DB incorrectly handled certain inputs. An attacker could possibly use this issue to read sensitive information. Table of contents […]

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How To Install Ruby on Rails with RVM on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Ruby on Rails with RVM on Ubuntu 18.04

This tutorial will take you through the Ruby and Rails installation process and set up via RVM. The command-line tool RVM will let you manage and work with multiple Ruby environments and allow you to switch between them. The project repository is located in a git repository.

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