feat(monitoring): add Grafana dashboard for ClickHouse
- Add Prometheus datasource provisioning config
- Add Grafana dashboard provider configuration
- Add ClickHouse Overview dashboard (JSON)
- Update README.md with monitoring section and updated stack badge
- Update docs/OPERATIONS.md with monitoring runbook
Dashboard includes:
- System Health: CPU, Memory Resident, Memory Code
- Query Performance: queries/sec, active queries, failed queries
- MergeTree Storage: parts count, merge rate
Verified via Context7: ClickHouse Prometheus metrics use ClickHouseAsyncMetrics_*,
ClickHouseMetrics_*, ClickHouseProfileEvents_* prefixes in v25.1.
Access:
- Grafana: http://localhost:3000 (admin/admin)
- Prometheus: http://localhost:9090
ddadmin
fdeb48fdb2