Prometheus High Availability Guide

Prometheus system employs various methods to ensure high availability and fault tolerance, including the following aspects:

1. Multiple instance deployment: Prometheus supports deploying multiple instances to improve system availability. Each Prometheus instance can monitor different targets and utilize cluster storage to share monitoring data, achieving high availability.
2. Highly available storage: Prometheus supports integration with various storage backends including local, remote, and cloud storage. By utilizing a highly available storage backend, the persistence and availability of monitoring data can be ensured.
3. Fault tolerance and automatic recovery: Prometheus supports automatic discovery and configuration of monitoring targets. In case a monitoring target becomes unavailable, Prometheus can automatically switch to other available targets and restore the collection of monitoring data.
4. Alerts and notifications: Prometheus offers flexible alerting rules and notification mechanisms, which can trigger alerts when monitoring metrics reach predefined thresholds, and notify relevant individuals through email, SMS, etc., to promptly address issues.

Overall, the Prometheus system enhances system availability and fault tolerance through multiple instances deployment, high availability storage, fault transfer and automatic recovery, alerts and notifications, etc. Users can also customize configurations according to their own needs and scenarios to meet specific requirements for availability and fault tolerance.