Monitoring & Diagnostics

Enable the diagnostics server in your config:

server:
  diagnostics: 0.0.0.0:9090

Endpoints

Endpoint	Description
`GET /health`	Liveness probe (uptime, version)
`GET /ready`	Readiness probe (200 once initialized)
`GET /api/pipelines`	Detailed JSON with per-stage metrics
`GET /api/stats`	Flattened JSON for polling/benchmarks
`GET /api/config`	View active YAML configuration
`GET /api/logs`	View recent log lines from stderr
`GET /api/history`	Time-series data for dashboard charts
`GET /api/traces`	Detailed latency spans for recent batches
`GET /`	HTML dashboard

Metric	Description
`logfwd_input_lines_total`	Lines read per input
`logfwd_transform_lines_in`	Lines entering SQL transform
`logfwd_transform_lines_out`	Lines after filtering
`logfwd_stage_seconds_total`	Time per stage (scan, transform, output)
`logfwd_flush_reason_total`	Flush triggers (size vs timeout)

server:
  metrics_endpoint: http://otel-collector:4318
  metrics_interval_secs: 60