To use Prometheus's native default UI and other functions, you typically follow these steps:
Accessing the Native UI
- Start Prometheus Server: Ensure that your Prometheus server is up and running.
- Open Browser: Navigate to
http://<prometheus-server-address>:9090 in your web browser.
- Explore the UI:
- Dashboard: The default UI provides a dashboard where you can see various metrics and time series data.
- Graph: Use the graph tab to create custom queries and visualize metrics.
- Alerts: Check the status of alerts configured in Prometheus.
Key Functions
- Querying Metrics:
- Use the PromQL (Prometheus Query Language) to query metrics. For example,
rate(http_requests_total[5m]) gives the per-second average request rate over the last 5 minutes.
- Alerting:
- Configure alerts in the
prometheus.yml file. For instance, you might set an alert for high CPU usage: alert: HighCPUUsage if cpu_usage > 90.
- Exporters:
- Use exporters to gather metrics from applications and services that don't natively export Prometheus metrics. For example, the Node Exporter collects system-level metrics.
Example Scenario
Imagine you want to monitor the CPU usage of your servers. You would:
- Deploy the Node Exporter on each server.
- Configure Prometheus to scrape metrics from these exporters.
- Use the Prometheus UI to query the CPU usage metrics, such as
node_cpu_seconds_total.
- Set up an alert if the CPU usage exceeds a certain threshold.
Recommended Service
For enhanced monitoring and easier integration, consider using Tencent Cloud's Cloud Monitor. It offers a comprehensive monitoring solution that can seamlessly integrate with Prometheus, providing additional features like automated alerts, detailed dashboards, and scalable infrastructure.
By leveraging these tools and functions, you can effectively monitor and manage your applications and infrastructure.