Backup Recovery

Common Problems 118452

Ubuntu 16.04 SSH Login Fails After sshd_config Change

🟡 Medium   ⏱ 5–30 min  Last verified: 28 February 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 […]

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How to Configure XFS File System on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure XFS File System on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up configure xfs file system on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully and […]

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How to Set Up PostgreSQL Streaming Replication on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Set Up PostgreSQL Streaming Replication on RHEL 8

PostgreSQL streaming replication continuously ships Write-Ahead Log (WAL) records from a primary server to one or more standby replicas in near real time. The standby can serve as a warm failover target or, in hot-standby mode, accept read-only queries to offload reporting traffic from the primary. This tutorial configures a two-node streaming replication setup on […]

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Common Problems 121040

Debian 10 – sshd Fails to Start After Config Change – Fast Validation Workflow

🔴 Critical   ⏱ 5–30 min  Last verified: 27 February 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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How to Configure Samba on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Samba on FreeBSD 12

Introduction How to Configure Samba on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, and […]

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Common Problems 118933

Ubuntu 14.04 LTS drops to initramfs BusyBox on boot

🟡 Medium   ⏱ 5–30 min  Last verified: 27 February 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 […]

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How to Install VictoriaMetrics on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install VictoriaMetrics on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install victoriametrics on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This […]

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How to Configure Database Backups with Automysqlbackup on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Database Backups with Automysqlbackup on Debian 10

Introduction This guide explains how to Configure Database Backups with Automysqlbackup 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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Common Problems 115482

Root filesystem reaches 100 percent usage

🟡 Medium   ⏱ 5–30 min  Last verified: 26 February 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 […]

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Common Problems 112583

Windows Server 2019 — Uneven traffic distribution across NLB nodes due to NIC offload inconsistency — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 26 February 2020 Affected versions: Windows Server 2019 📖 ~2 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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