Debian 9

Common Problems 121489

Debian 9 NO_PUBKEY Signature Verification Failure

🟠 High   ⏱ 5–30 min  Last verified: 24 August 2020 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
Cómo configurar un firewall con UFW en Debian 9 — step-by-step Linux tutorial on Progressive Robot

Cómo configurar un firewall con UFW en Debian 9

UFW o Uncomplicated Firewall es una interfaz para iptables orientada a simplificar el proceso de configuración de un firewall. Aunque iptables es una herramienta sólida y flexible, puede resultar difícil para los principiantes aprender a usarlo para configurar…

Read more
How to Install Portainer on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Portainer on Debian 9

Introduction Deploying install portainer on debian 9 on a Debian 9 Stretch 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 Ensure Debian 9 Stretch […]

Read more
Common Problems 121558

DNS Resolution Intermittently Fails on Server

🟠 High   ⏱ 5–30 min  Last verified: 10 August 2020 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 121501

Debian 9 – initramfs BusyBox Drop on Boot – Root Filesystem Recovery

🔴 Critical   ⏱ 5–30 min  Last verified: 7 August 2020 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
How to Configure MySQL InnoDB Tuning on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure MySQL InnoDB Tuning on Debian 9

Introduction Deploying configure mysql innodb tuning on debian 9 on a Debian 9 Stretch 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 You will […]

Read more
Установка Node.js в Debian 9 — step-by-step Linux tutorial on Progressive Robot

Установка Node.js в Debian 9

Node.js — это платформа программирования JavaScript общего назначения, позволяющая пользователям быстро создавать сетевые приложения. Благодаря использованию JavaScript в клиентской и серверной части приложения Node.js делает процесс разработки более…

Read more
Common Problems 121649

Debian 9 Hostname Resolution Warning sudo unable to resolve host

🟢 Low   ⏱ 5–30 min  Last verified: 4 August 2020 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
How To Configure a Galera Cluster with MariaDB on Debian 9 Servers — step-by-step Linux tutorial on Progressive Robot

How To Configure a Galera Cluster with MariaDB on Debian 9 Servers

In this guide, you will configure an active-active MariaDB Galera cluster. For demonstration purposes, you will configure and test three Debian 9 Droplets that will act as nodes in the cluster. MariaDB is an open source relational database system that is fully compatible with the popular MySQL RDBMS system. Galera is a database clustering solution that enables you to set up multi-master clusters using synchronous replication.

Read more
CHAT