DNS

How to Configure PHP-FPM with Nginx on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure PHP-FPM with Nginx on FreeBSD 12

Introduction How to Configure PHP-FPM with Nginx 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 Podman Compose on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Podman Compose on RHEL 7

How to Configure Podman Compose on RHEL 7 Podman Compose is a Python script that implements the Docker Compose file specification against the Podman container engine. It allows you to use your existing docker-compose.yml files with Podman, either with the rootless model for increased security or as root on systems where Docker is not installed. […]

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How to Install Elasticsearch on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Elasticsearch on RHEL 7

How to Install Elasticsearch on RHEL 7 Elasticsearch is a distributed, RESTful search and analytics engine built on Apache Lucene. It is widely used for full-text search, log aggregation, and real-time data analysis. This guide walks you through installing and configuring Elasticsearch on Red Hat Enterprise Linux 7, including repository setup, basic cluster configuration, JVM […]

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How to Configure Network Load Balancing on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Network Load Balancing on Windows Server 2016

How to Configure Windows Server 2016 Network Load Balancing Network Load Balancing (NLB) in Windows Server 2016 distributes incoming network traffic across multiple servers in a cluster, improving availability and scalability for TCP/IP-based services such as web servers, Terminal Services, and VPNs. Unlike Failover Clustering which targets stateful applications, NLB is ideal for stateless services […]

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How to Configure Log Rotation with logrotate on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Log Rotation with logrotate on RHEL 8

Log files grow indefinitely unless something rotates and prunes them, which will eventually fill a disk and crash your services. On RHEL 8, logrotate is installed by default and handles rotation for most system logs out of the box via a systemd timer. For application logs your team manages, you need to write a custom […]

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Common Problems 121588

Fail2ban Blocking Trusted Internal Addresses

🟡 Medium   ⏱ 5–30 min  Last verified: 11 November 2019 Affected versions: Debian 9 📖 ~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 118924

Ubuntu 14.04 LTS Boot Drops to initramfs Prompt

🟡 Medium   ⏱ 5–30 min  Last verified: 11 November 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 Consul for Service Discovery on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Consul for Service Discovery on FreeBSD 12

Introduction How to Configure Consul for Service Discovery 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 Scan for Vulnerabilities with OpenVAS on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Scan for Vulnerabilities with OpenVAS on RHEL 7

How to Scan for Vulnerabilities with OpenVAS on RHEL 7 OpenVAS (Open Vulnerability Assessment System), now part of the Greenbone Vulnerability Management (GVM) framework, is one of the most capable open-source vulnerability scanners available. It maintains a continuously updated feed of over 50,000 Network Vulnerability Tests (NVTs) and can detect misconfigurations, outdated software, missing patches, […]

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How to Configure Fabric Deployment Tool on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Fabric Deployment Tool on Debian 9

Introduction This guide explains how to Configure Fabric Deployment 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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