DevOps Archives - Page 3 of 63 - ITFROMZERO

How to Use Bitnami Sealed Secrets on Kubernetes: Secure GitOps Secrets Management

By IT From Zero October 24, 2026

A comprehensive guide to deploying Bitnami Sealed Secrets on Kubernetes. Leverage asymmetric encryption to store secrets directly in Git safely and adhere to GitOps.

Artificial Intelligence tutorial - IT technology blog

Installing and Using Portkey AI Gateway: Rate Limiting, Load Balancing, and Multi-LLM Observability

By IT From Zero October 23, 2026

How to self-host Portkey AI Gateway with Docker for load balancing, automated failovers across OpenAI, Claude, and Gemini, and slashing token costs.

Linux

How to Install and Configure nftables on Linux: A Complete iptables Replacement

By IT From Zero October 23, 2026

Learn how to configure nftables to replace iptables on Linux. Boost network performance with modern syntax, set up NAT, and prevent SSH brute-force attacks automatically.

Docker

How to Deploy Umami Analytics with Docker Compose and PostgreSQL: Self-Host a Lightweight GA4 Alternative

By IT From Zero October 23, 2026

A step-by-step guide to deploying Umami Analytics with Docker Compose and PostgreSQL. A lightweight 2KB, GDPR-compliant, real-time self-hosted GA4 alternative.

Development

How to Back Up SQLite to S3 with Litestream: Real-Time Production Backups

By IT From Zero October 23, 2026

Litestream's Continuous WAL Replication makes SQLite production-ready with real-time backups to S3 and second-accurate Point-in-Time Recovery.

Virtualization

Guide to Using Tart on macOS Apple Silicon: Create and Manage CLI Virtual Machines for CI/CD

By IT From Zero October 23, 2026

A guide to using Tart on Apple Silicon: create, clone, and automate macOS and Linux VMs via an OCI-compliant CLI, optimized for CI/CD runners and local testing.

Monitoring

Centralized Cloudflare Traffic and Security Monitoring with Cloudflare Exporter, Prometheus, and Grafana

By IT From Zero October 22, 2026

How to integrate Cloudflare Exporter with Prometheus and Grafana for centralized monitoring of traffic, cache hit ratios, and 502 errors. Includes production-ready Docker Compose, practical PromQL queries, and API rate-limiting tips.

Ubuntu

How to Create Systemd Services and Systemd Timers on Ubuntu: A Robust Crontab Alternative

By IT From Zero October 22, 2026

Eliminate silent cron job failures by migrating to Systemd Services and Timers on Ubuntu. A step-by-step guide covering self-healing daemon setups to rapid journalctl log debugging.

Linux

Configuring auditd on Linux: Monitor Sensitive Files, Log User Commands, and Trace Intrusions

By IT From Zero October 21, 2026

A hands-on guide to configuring auditd on Linux: monitoring passwd/sudoers files, logging user commands by auid, tuning buffers to prevent disk overflow, and analyzing logs with ausearch.

Fedora

How to Join Fedora Server to Microsoft Active Directory Using realmd and SSSD

By IT From Zero October 21, 2026

A step-by-step guide to integrating Fedora Server into Microsoft Active Directory using realmd and SSSD. Covers architecture comparisons, automatic home directories, sudo delegation for AD groups, and offline cache verification.