Linux

How to Configure ZFS on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure ZFS on Debian 10

Introduction How to Configure ZFS on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. This tutorial […]

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Debian 10 — net-snmp — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — net-snmp — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 July 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-15861 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Como instalar e configurar o Ansible no Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

Como instalar e configurar o Ansible no Ubuntu 18.04

Sistemas de gerenciamento de configuração são projetados para facilitar o controle de um grande número de servidores aos administradores e equipes de operações. Isso permite que você controle sistemas diferentes de forma automática a partir de um local central. Embora existam…

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Common Problems 121034

Debian 10 – update-initramfs fails with missing modules or hooks

🟠 High   ⏱ 5–30 min  Last verified: 22 July 2020 Affected versions: Debian 10 📖 ~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 119070

Ubuntu 14.04 LTS Fail2ban Blocks Trusted Office CIDR

🟡 Medium   ⏱ 5–30 min  Last verified: 22 July 2020 Affected versions: 14.04 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 & […]

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Common Problems 117598

Ubuntu 20.04 LTS – filesystem remounted read-only after I/O errors

🔴 Critical   ⏱ 5–30 min  Last verified: 22 July 2020 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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How to Set Up Dovecot IMAP Server on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Dovecot IMAP Server on Debian 10

Introduction This guide explains how to Set Up Dovecot IMAP Server on Debian 10 on Debian 10 Buster. Debian Buster uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 10 install with […]

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