Backup Recovery

How to Configure Hyper-V Replica on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Hyper-V Replica on Windows Server 2016

How to Set Up Windows Server 2016 Hyper-V Replica Hyper-V Replica is a built-in disaster recovery feature in Windows Server 2016 that asynchronously replicates virtual machines from a primary Hyper-V host to a replica host. When the primary site goes offline due to hardware failure, natural disaster, or any unplanned outage, you can fail over […]

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Common Problems 119006

Ubuntu 14.04 LTS – DHCP lease not renewing causes network loss – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 August 2019 Affected versions: Ubuntu 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 117902

NO_PUBKEY Error for Third-Party apt Repository

🟡 Medium   ⏱ 5–30 min  Last verified: 24 August 2019 📖 ~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 Gradle Build Tool on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Gradle Build Tool on Debian 9

Introduction This guide explains how to Install Gradle Build Tool on Debian 9 on Debian 9 Stretch. Debian Stretch 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 9 install with the […]

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Common Problems 115463

RHEL 7 – SELinux AVC Denial Prevents Daemon from Binding Port

🟡 Medium   ⏱ 5–30 min  Last verified: 24 August 2019 📖 ~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 112532

Windows Server 2019 – RDP NLA fails with CredSSP encryption oracle error – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 August 2019 Affected versions: Windows Server 2019 📖 ~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 Monitor Nginx Access Logs with GoAccess on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Monitor Nginx Access Logs with GoAccess on RHEL 8

GoAccess is an open-source, real-time web log analyzer that generates interactive HTML reports and live terminal dashboards directly from Nginx access logs. It requires no database, no JavaScript framework, and no persistent service — a single command can parse millions of log entries in seconds. On RHEL 8 the package is available from the EPEL […]

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Common Problems 118974

Ubuntu 14.04 LTS sudo Stops Working Due to Broken Permissions

🟡 Medium   ⏱ 5–30 min  Last verified: 23 August 2019 📖 ~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 Back Up PostgreSQL with pg_dump on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Back Up PostgreSQL with pg_dump on FreeBSD 12

Introduction How to Back Up PostgreSQL with pg_dump 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 […]

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How to Enable Automatic Security Updates on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Enable Automatic Security Updates on FreeBSD 12

Introduction How to Enable Automatic Security Updates 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 […]

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