A script-based alerting system that queries data sources, analyzes metrics, and sends notifications via multiple channels.
Balerter is a script-based alerting manager that allows developers to write custom Lua scripts to query data sources, analyze metrics, and trigger alerts through various notification channels. It solves the problem of rigid alerting systems by providing programmable flexibility for monitoring complex scenarios and integrating with diverse data backends.
DevOps engineers, SREs, and developers who need customizable alerting logic beyond standard threshold-based monitoring, especially those working with multiple data sources like Prometheus, ClickHouse, or databases.
Developers choose Balerter for its script-driven approach, which enables complex alerting logic, support for numerous data sources and notification channels, and built-in testing capabilities, offering more control than traditional alerting tools.
Script Based Alerting Manager
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Lua scripts enable complex alerting logic beyond simple thresholds, allowing custom data analysis and multi-source integration, as shown in the example script for ClickHouse queries.
Integrates with Prometheus, ClickHouse, PostgreSQL, MySQL, Loki, and HTTP APIs, providing versatility for pulling metrics from diverse backends, as listed in the datasources section.
Supports alerts via Slack, Telegram, Email, Discord, Webhook, Prometheus Alertmanager, Twilio Voice, Syslog, and Desktop Notify, offering extensive outreach options.
Allows writing Lua tests to mock datasource responses and verify alert behavior, ensuring script reliability before deployment, demonstrated in the test example.
The project is in active development with breaking changes possible before v1.0.0, as warned in the README, making it risky for production use.
Requires knowledge of Lua to write and maintain scripts, which can be a barrier for teams unfamiliar with the language or preferring declarative configurations.
Configuration involves managing YAML files for datasources and scripts, along with Lua coding, which can be cumbersome compared to simpler, GUI-based tools.