Boot Startup

How to Write Ansible Playbooks for FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Write Ansible Playbooks for FreeBSD 12

Introduction Deploying write ansible playbooks for freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base […]

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Common Problems 115060

Multipath device map missing on startup

🟡 Medium   ⏱ 5–30 min  Last verified: 22 June 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 Configure BGP Routing with BIRD on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure BGP Routing with BIRD on RHEL 7

How to Configure BGP Routing with BIRD on RHEL 7 Border Gateway Protocol (BGP) is the routing protocol that underpins the modern internet, enabling routers in different autonomous systems to exchange network reachability information. While large-scale BGP deployments typically run on dedicated hardware, Linux systems running RHEL 7 can participate in BGP routing using software […]

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Common Problems 115052

RHEL 8 System Falls Into Emergency Mode Due to fstab Mistake

🔴 Critical   ⏱ 5–30 min  Last verified: 22 June 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 Install Node.js on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Node.js on RHEL 7

How to Install Node.js on RHEL 7 Node.js is a server-side JavaScript runtime built on Chrome’s V8 engine. It is widely used for building REST APIs, real-time applications, microservices, and command-line tooling. Red Hat Enterprise Linux 7 does not ship a recent version of Node.js in its default repositories, so several installation methods are available […]

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How to Set a Hostname and FQDN on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set a Hostname and FQDN on RHEL 7

How to Set a Hostname and FQDN on RHEL 7 A properly configured hostname is one of the most fundamental aspects of Linux system administration. On Red Hat Enterprise Linux 7, the hostname identifies your machine on the network and appears in log files, shell prompts, and monitoring tools. Getting it right — including the […]

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How to Configure Large Page Support on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Large Page Support on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure large page support on ibm aix 7.1 on […]

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Common Problems 118107

Ubuntu 18.04 LTS – failed fstab mount entry blocks startup target – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 June 2019 Affected versions: Ubuntu 18.04 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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How to Use instfix to Check Installed Fixes on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use instfix to Check Installed Fixes on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use instfix to check installed fixes on ibm aix […]

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How to Install and Configure BIND9 DNS Server on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure BIND9 DNS Server on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install and configure bind9 dns server on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step […]

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