Cluster health

ClickHouse cluster health monitoring, at a glance

One board of color-coded health checks — replication lag, failed queries, disk, memory, stuck mutations — with alerts to Slack or Discord when something turns red, and again when it recovers.

chmonitor cluster health summary board
What you get

Built for this, not bolted on

Every health signal in one board

Green, warn or critical indicators for replication lag, readonly replicas, delayed inserts, failed queries, memory, disk, parts-per-partition and stuck mutations.

Alerts to Slack or Discord

Configure one webhook URL and chmonitor posts a message when a check crosses your threshold — and again when it recovers, so you know an incident actually cleared.

A ready audit prompt for your agent

Turn any failing check into a structured prompt — the metric, raw data, relevant system tables and common causes — to paste into an AI agent for a tailored diagnosis.

Start monitoring — advisor and alerts built in

Open the hosted dashboard and connect a cluster, or self-host with Docker, Kubernetes, or from source. Self-hosting is always free.