Networking

How to Install and Configure Tomcat 8 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure Tomcat 8 on Debian 9

Introduction Deploying install and configure tomcat 8 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 […]

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How To Set Up an NFS Mount on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up an NFS Mount on Ubuntu 16.04

NFS, or Network File System, is a distributed file system protocol that allows you to mount remote directories on your server. This allows you to leverage storage space in a different location and to write to the same space from multiple servers. NFS works well for directories…

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How to Set Up K3s Lightweight Kubernetes on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up K3s Lightweight Kubernetes on SLES 12

Introduction This tutorial covers How to Set Up K3s Lightweight Kubernetes on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Disable Swap swapoff -a sed -i ‘/ […]

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Common Problems 114957

Chrony Not Syncing Time with NTP Sources

🟡 Medium   ⏱ 5–30 min  Last verified: 24 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 Install Nomad on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Nomad on FreeBSD 12

Introduction How to Install Nomad 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 filtering, and […]

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How to Install MariaDB on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install MariaDB on FreeBSD 12

Introduction This guide explains how to Install MariaDB 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 fine-grained privilege separation. […]

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How to Install SQLite3 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install SQLite3 on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up install sqlite3 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 carefully and the resulting […]

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Common Problems 119053

Ubuntu 14.04 LTS Apache returns 500 Internal Server Error

🟡 Medium   ⏱ 5–30 min  Last verified: 23 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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Security Checkpoint — step-by-step Linux tutorial on Progressive Robot

Security Checkpoint

This checkpoint is intended to help you assess what you learned from our introductory articles to Security, where we introduced recommended security practices and commonly used security tools.

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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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