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Prometheus Federation: Aggregating Metrics from Multiple Clusters into a Single Global View

By admin July 14, 2026

Prometheus Federation lets you aggregate metrics from multiple clusters and regions into a single Global Prometheus, enabling infrastructure-wide queries and alerts without installing Thanos or Cortex. This guide covers practical configuration with recording rules and PromQL queries for multi-region environments.

Centos

Deploying Ansible on CentOS Stream 9: Automate Linux Server Management Without Installing Agents

By admin July 10, 2026

A guide to deploying Ansible on CentOS Stream 9 to automate configuration and manage multiple Linux servers simultaneously. Ansible works over SSH — no agent installation, no extra ports — suitable for both beginners and operations teams.

Ubuntu

Using cloud-init on Ubuntu Server: Automate System Configuration on First Boot

By admin July 1, 2026

cloud-init lets Ubuntu Server configure itself automatically on first boot via user-data YAML — no manual SSH required, no steps missed. This post compares cloud-init with bash scripts, breaks down the pros and cons, and walks through a practical deployment with a complete web server user-data example.