How-ToToolsvia DigitalOcean Tutorials

How To Debug Go Code with Visual Studio Code

Learn how to debug Go code in Visual Studio Code using the Go extension, Delve, breakpoints, and launch.json.

Chris Ganga1mo ago

How-ToWeb Developmentvia DigitalOcean Tutorials

Apache Configuration Error AH00558: Could not reliably determine the server's fully qualified domain name

An Apache AH00558: Could not reliably determine the server's fully qualified domain name message is generated when Apache is not configured with a glo...

Jamon Camisso1mo ago

How-ToSystemsvia DigitalOcean Tutorials

How To Forward Ports through a Linux Gateway with Iptables

Learn how to forward ports through a Linux gateway using iptables. Configure DNAT, SNAT, and IP forwarding for secure NAT routing.

Anish Singh Walia1mo ago

How-ToDevOpsvia DigitalOcean Tutorials

How To Create and Use Templates in Ansible Playbooks

Create and use Jinja2 templates in Ansible playbooks for dynamic configs, variables, and loops to automate server configuration efficiently.

Erika Heidi1mo ago

How-ToWeb Developmentvia DigitalOcean Tutorials

How To Use Conditionals in Ansible Playbooks

Learn how to use conditionals in Ansible playbooks to control task execution dynamically with the when keyword, variables, facts, and logical expressi...

Erika Heidi1mo ago

How-ToSystemsvia DigitalOcean Tutorials

How To Install and Secure MariaDB on Ubuntu

Learn how to install and secure MariaDB on Ubuntu. Follow step-by-step instructions to configure, harden, and manage your database server.

Anish Singh Walia1mo ago

How-ToProgramming Languagesvia DigitalOcean Tutorials

How To Use Variables in Python 3

Learn how to use variables in Python 3: declaration, naming rules, data types, the type() function, scope, constants, and common mistakes.

Lisa Tagliaferri1mo ago

How-ToMachine Learningvia DigitalOcean Tutorials

GPT 5.3 Codex is the Next Level for Agentic Coding

In this tutorial, we examine the powerful, new OpenAI GPT-5.3-Codex model, discuss it's strengths, and show how you can access GPT-5.3-Codex today wit...

James Skelton1mo ago

How-ToSecurityvia DigitalOcean Tutorials

Iptables Essentials: Common Firewall Rules and Commands

Learn essential iptables firewall rules and commands for Linux, including common examples, safe defaults, and tips for persisting and managing rules.

Mitchell Anicas1mo ago

How-ToSystemsvia DigitalOcean Tutorials

Package Management Essentials: apt, yum, dnf, pkg

Learn how apt, yum, dnf, and pkg manage software on Linux and FreeBSD. Compare commands, workflows, and best practices. Start with the right tool for...

Brennen Bearnes1mo ago

How-ToSystemsvia DigitalOcean Tutorials

Create SSH Keys with OpenSSH on macOS, Linux, or Windows

Create SSH keys with OpenSSH on macOS, Linux, or WSL. Generate secure key pairs, set file permissions and set up passwordless SSH access.

Erin Glass1mo ago

How-ToToolsvia Martin Fowler

Fragments: February 25

I don’t tend to post links to videos here, as I can’t stand watching videos to learn about things . But some talks are worth a watch, and I do suggest...

Martin Fowler (martin@martinfowler.com)1mo ago

How-ToSecurityvia DigitalOcean Tutorials

How To Set Up WireGuard on Rocky Linux 8

Install and configure WireGuard on Rocky Linux 8. Set up a secure VPN server, configure firewall rules, manage peers, and troubleshoot connections.

Jamon Camisso1mo ago

How-ToToolsvia DigitalOcean Tutorials

How To Use the MongoDB Shell

Learn how to use the MongoDB Shell (mongosh) to connect, query data, manage collections, and run CRUD operations from the command line.

Mateusz Papiernik1mo ago

How-ToSystemsvia DigitalOcean Tutorials

Debugging on Droplets with perf, bpftrace, and System Tools

Learn how to debug Linux performance using perf, bpftrace, valgrind, and system tools on a DigitalOcean Droplet to find and fix bottlenecks.

Anish Singh Walia1mo ago

How-ToProgramming Languagesvia DigitalOcean Tutorials

How To Install Go on Ubuntu

Learn how to install Go (Golang) on Ubuntu. Explore binary installation, configuration, and verification. Includes troubleshooting tips.

Brennen Bearnes1mo ago

How-ToMachine Learningvia DigitalOcean Tutorials

AI Automation Guide Build Reliable AI Workflows

Build reliable AI workflows with this AI automation. Explore structured pipelines, best practices to create scalable and consistent AI systems.

Adrien Payong1mo ago

How-ToMachine Learningvia DigitalOcean Tutorials

How To Use Generics in Go

Learn generics in Go 1.18+ with type parameters and constraints. Build a card deck example and migrate from interface{} to reusable, type-safe code.

Kristin Davidson1mo ago

How-ToMachine Learningvia DigitalOcean Tutorials

Prompting with DSPy: A New Approach

Learn how to use DSPy for prompting large language models with a structured and reliable approach. This guide covers DSPy concepts, prompt optimizatio...

Shaoni Mukherjee1mo ago

How-ToDevOpsvia DigitalOcean Tutorials

Advanced Network Policies on DOKS with Cilium

Build Kubernetes NetworkPolicies and use Cilium with Hubble on DOKS to isolate services, enforce zero-trust networking, and visualize traffic with eBP...

Vinayak Baranwal1mo ago

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