DataDog vs Clustersight for ClickHouse Monitoring

Short answer: DataDog's ClickHouse integration captures basic host metrics and query counts but misses broken parts, mutation queues, replication lag, and 200+ hidden metrics in ClickHouse system tables. Clustersight covers all of them at a fraction of the cost.

What DataDog Misses

DataDog's ClickHouse integration uses a standard agent check that queries a limited set of metrics. It does not query system.parts for broken parts, monitor system.mutations for stuck mutations, surface replication lag with fix guidance, or provide copy-pasteable SQL fix commands with alerts.

Feature Comparison

| Feature | DataDog | Clustersight | |---|---|---| | Setup time | 1–2 hours | Under 8 minutes | | ClickHouse broken parts | Not monitored | Automatic | | Mutation queue | Not monitored | Automatic | | Fix commands with alerts | None | Included | | Health score | No | 0–100 score | | Pricing | $15–23/host/month | Free tier available | | ClickHouse-specific panels | Generic | 10 purpose-built |

The Cost Advantage

A 10-node ClickHouse cluster costs $150–230/month on DataDog — and still misses most ClickHouse-specific metrics. Clustersight's Pro plan at $299/month covers 5 full clusters with complete operational visibility.

Read more: How to Monitor ClickHouse in Production

External reference: DataDog ClickHouse integration docs