How To Set Up SSH Keys on CentOS 7
SSH-key-based authentication provides a more secure alternative to password-based authentication. In this tutorial we’ll learn how to set up SSH-key-based authentication on a CentOS 7 installation.
How To Monitor Hosts and Services with Icinga on Ubuntu 16.04
Icinga is an open-source monitoring system used to monitor the health of networked hosts and services. In this tutorial we will use Icinga to set up two different kinds of monitoring configurations, remote service checks and the Icinga agent-based “Top Down Command Endpoint” mode.
Getting Started With React
See why React is the most popular JavaScript library for building frontends, and use it to build sites and apps.
How to Set Up ArgoCD for GitOps on RHEL 8
ArgoCD implements the GitOps pattern for Kubernetes by continuously reconciling the live state of your cluster with manifests stored in a Git repository. Running on RHEL 8, you interact with ArgoCD through its CLI, its web UI, or both, while a controller inside the cluster watches for drift and can automatically correct it. This tutorial […]
CSS white-space Property
A reference for the CSS white-space property.
Ubuntu 20.04 LTS – DNS resolution fails with systemd-resolved stub issues – Fix & Prevention
🟠 High ⏱ 5–30 min Last verified: 17 November 2020 Affected versions: Ubuntu 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 […]
Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-1988)
🟠 High ⏱ 15–60 min Last verified: 17 November 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2022-1988 Related CVEs: CVE-2022-0286 CVE-2022-0322 CVE-2020-0404 CVE-2022-1011 CVE-2020-4788 CVE-2021-21781 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]
systemctl Cannot Start Due to Missing Environment File
🟡 Medium ⏱ 5–30 min Last verified: 17 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 […]
Ubuntu 20.04 — ppp — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 17 November 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4451-1 Related CVEs: CVE-2020-15704 Upstream summary: Thomas Chauchefoin working with Trend Micro´s Zero Day Initiative, discovered that ppp incorrectly handled module loading. A local attacker could use this issue to […]
auditd stops because /var/log/audit is full
🟡 Medium ⏱ 5–30 min Last verified: 17 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 […]
