How does the alert management in the Prometheus system work?

The workflow for alarm management in the Prometheus system is as follows:

1. Configuration rules: Users can define a series of rules to monitor metric data, triggering alerts when these rule conditions are met. These rules are typically defined using the PromQL language.
2. Triggering an alert: Once the rule conditions are met, Prometheus will generate an alert and send it to the Alertmanager component.
3. Aggregation and deduplication: Alertmanager aggregates and removes duplicate alerts to prevent sending duplicate notifications.
4. Notify receivers: The Alertmanager will send alerts to the appropriate receivers based on preconfigured notification policies, such as sending emails, sending text messages, or calling a webhook.
5. Setting up a silence period: Alertmanager allows you to set a period during which alerts will not be triggered.

Using the above process, the Prometheus system can perform real-time analysis on monitoring data and handle alerts, helping users to quickly identify and resolve issues in the system.