Recommended Security Measures to Protect Your Servers
Learn essential server security measures to protect against breaches: access control, firewalls, patching, monitoring, and hardening best practices for Linux and cloud infrastructure.
How to Set Up OpenTelemetry Collector 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 set up opentelemetry collector 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 […]
How to Set Up ArgoCD on Kubernetes on FreeBSD 12
Introduction This guide explains how to Set Up ArgoCD on Kubernetes on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for […]
How to Set Up pgBouncer Connection Pooler on Debian 10
Introduction How to Set Up pgBouncer Connection Pooler on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]
How to Install and Configure Cassandra on Debian 10
Introduction This guide explains how to Install and Configure Cassandra 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 the […]
Ubuntu 14.04 LTS – significant time drift breaks auth and jobs – Fix & Prevention
🟡 Medium ⏱ 5–30 min Last verified: 13 April 2020 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 […]
How to Optimize AIX for High-Throughput Workloads on IBM AIX 7.2
Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to optimize aix for high-throughput workloads on ibm aix 7.2 […]
How to Install MongoDB on RHEL 7
How to Install MongoDB on RHEL 7 MongoDB is a document-oriented NoSQL database that stores data in flexible, JSON-like BSON documents rather than traditional rows and columns. Its schema-less design makes it an excellent choice for applications that need to handle varied or rapidly evolving data structures, such as content management systems, real-time analytics platforms, […]
How to Configure Docker Networking on RHEL 8
Docker networking determines how containers communicate with each other, with the host, and with external networks. RHEL 8 adds a layer of complexity because Docker writes its own iptables rules at startup, which can interact unexpectedly with firewalld — the default firewall manager on RHEL 8. Understanding Docker’s network drivers and how they map to […]
How to Enable HTTP/2 in Nginx on FreeBSD 12
Introduction Deploying enable http/2 in nginx on 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 […]
