prometheus/alertmanager
Alertmanager
Alertmanager is a monitoring notification gateway and routing service that deduplicates, groups, and directs alerts to the correct receivers. It functions as a central manager for Prometheus alerts, using a hierarchical routing tree and label-based matchers to dispatch notifications to external services.
The system employs a peer-to-peer mesh network to coordinate multiple instances in a high availability cluster, ensuring continuous alert processing. It features a dedicated inhibition engine and grouping mechanisms to reduce notification noise by suppressing redundant alerts when related issues are already active.
Capability areas include incident notification management via webhooks and third-party integrations, temporal alert silencing, and active alert limiting to prevent receiver flooding. The service also provides system event recording and event log export for auditing notification deliveries.
Administrative tasks can be performed through a command-line interface for managing silences and routing configurations.
Features
- Alert Notification Systems - Provides a central hub for managing alert silences and dispatching notifications to various external integrations.
- Alert Routing - Directs monitoring alerts to specific people or services through a hierarchical tree based on labels.
- Alert Correlation - Groups related alerts and filters redundant notifications based on labels to reduce noise and fatigue.
- Notification Dispatchers - Sends alerts to external services like Slack, PagerDuty, and Jira via dedicated integrations.
- Alert Aggregators - Aggregates individual alerts into single notifications by matching common labels to reduce noise.
- Alert Suppression Systems - Temporarily mutes specific notifications to avoid distractions during scheduled maintenance.
- Inhibition Engines - Suppresses redundant notifications when related alerts are already active to reduce noise.
- Alerting and Incident Management - Sends critical system alerts to external platforms like Slack, PagerDuty, and Jira.
- Alert Managers - Implements an alert manager that routes and groups system alerts from Prometheus based on defined routing rules.
- Alert Management Systems - Suppresses redundant notifications when related alerts are already active.
- Notification Dispatchers - Decouples alert routing from delivery using dedicated plugins for services like Slack and PagerDuty.
- Notification Noise Reduction - Groups and inhibits redundant alerts to prevent notification fatigue during large outages.
- Silence Stores - Maintains temporary mute rules that suppress notifications for specific labels over a defined duration.
- Gossip Protocols - Implements a gossip-based mesh network to synchronize state and maintain high availability across instances.
- High Availability Clustering - Coordinates multiple service instances through peer-to-peer communication to ensure continuous processing.
- Webhook Integrations - Provides a generic webhook receiver to deliver notifications to third-party platforms for custom integrations.
- Notification Rate Limiting - Caps the number of active alerts per name to prevent receiver flooding during spikes.
- Alerting Systems - Handles alert routing and silencing for metric-based systems.
