# Monitoring ECSs

Monitoring is key for ensuring ECS performance, reliability, and availability. Using monitored data, you can determine ECS resource utilization. The public cloud provides Cloud Eye to help you obtain the running statuses of your ECSs. You can use Cloud Eye to automatically monitor ECSs in real time and manage alarms and notifications to keep track of ECS performance metrics.

This section covers the following content:

- Viewing basic ECS metrics
- Customizing ECS alarm rules
- Viewing ECS running statuses for routine monitoring

Parent topic: Monitoring