Networking

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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How to Configure Apache2 MPM Worker on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Apache2 MPM Worker on Debian 9

Introduction Deploying configure apache2 mpm worker 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 […]

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Common Problems 115002

RHEL 8 sudo Commands Pause for DNS Lookup Delays

🟡 Medium   ⏱ 5–30 min  Last verified: 22 August 2019 Affected versions: 8.4 8.5 8.6 8.7 8.8 8.9 8.10 📖 ~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 […]

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How to Perform a System State Backup on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Perform a System State Backup on Windows Server 2016

How to Set Up System State Backup and Bare Metal Recovery on Windows Server 2016 Protecting a Windows Server 2016 installation requires more than simply backing up user data. The operating system itself, including the registry, the Active Directory database, boot files, and the COM+ class registration database, must be captured in what is known […]

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How to Configure pf Firewall Rules on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure pf Firewall Rules on FreeBSD 12

Introduction How to Configure pf Firewall Rules 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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How to Set Up Hyper-V Discrete Device Assignment on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Hyper-V Discrete Device Assignment on Windows Server 2019

How to Set Up Hyper-V Discrete Device Assignment on Windows Server 2019 Hyper-V Discrete Device Assignment (DDA) allows a physical PCIe device — typically a GPU, NVMe SSD, or specialised accelerator card — to be directly assigned to a virtual machine, bypassing the Hyper-V virtualisation layer entirely. The VM gains native, low-latency access to the […]

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Common Problems 119090

Ubuntu 14.04 LTS CIFS Mount Fails at Boot with Credential Timing

🟡 Medium   ⏱ 5–30 min  Last verified: 19 August 2019 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 118587

Ubuntu 16.04 LTS severe swap thrashing and performance collapse

🟡 Medium   ⏱ 5–30 min  Last verified: 19 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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