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Here’s a detailed step-by-step guide to install Grafana on a Debian VPS and connect to Node Exporter via Prometheus. What is Grafana? Grafana is a powerful open-source analytics and visualization platform used to display time-series data from monitoring systems like Prometheus, InfluxDB, Elasticsearch, and many others. 📊 What Grafana Does Grafana lets you: Visualize data through dashboards with charts, graphs, and tables Correlate metrics from multiple sources in one interface Set up alerts to notify you when thresholds are breached Share dashboards with teams or embed them in external platforms ✅ Key Features Custom Dashboards: Drag-and-drop interface with support for variables, templating, and dynamic panels Multi-source support: Works with Prometheus, Graphite, Loki, MySQL, PostgreSQL, AWS CloudWatch, and more Alerting system: Integrated alerting via email, Slack, webhooks, etc. User management: Role-based access controls and authentication options Plugins and extensions: Expand functionality with community or custom plugins 🧰 Common Use Cases Infrastructure monitoring (servers, containers, networks) Application performance monitoring IoT data dashboards Business analytics (sales, web traffic, KPIs) Grafana is often used in combination with Prometheus + Node Exporter to form a complete observability stack. ✅ Prerequisites Debian 10, Debian 11, or Debian 12 VPS Prometheus already installed and scraping Node Exporter sudo/root access 📊 How to Install Grafana on Debian VPS and Connect to Node Exporter To install Grafana on a Debian VPS and connect to Node Exporter, follow the steps below: 🧱 Install Grafana on Debian Grafana provides an official APT repository. Add Grafana APT repo sudo apt update sudo apt install -y apt-transport-https software-properties-common wget -q -O - https://packages.grafana.com/gpg.key | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/grafana.gpg echo "deb https://packages.grafana.com/oss/deb stable main" | sudo tee /etc/apt/sources.list.d/grafana.list Install Grafana sudo apt update sudo apt install grafana -y 🚀 Start and Enable Grafana sudo systemctl daemon-reexec sudo systemctl daemon-reload sudo systemctl start grafana-server sudo systemctl enable grafana-server 🌐 Access the Grafana Web UI By default, Grafana runs on port 3000. Open in browser: http://:3000 Default login: Username: admin Password: admin You’ll be prompted to set a new password on first login. 📡 Add Prometheus as a Data Source Go to Gear icon (⚙️) → Data Sources Click “Add data source” Choose Prometheus Set URL to: http://localhost:9090 (Replace if Prometheus is remote) Click Save & Test 📈 Import Node Exporter Dashboard Grafana has community-built dashboards. Click “+” → Import Enter Dashboard ID: 1860 Click Load Select Prometheus as the data source Click Import This imports the Node Exporter Full dashboard. Conclusion You now know how to install Grafana on Debian VPS and connect to Node Exporter.

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