Query CPU, disk, network and load balancer metrics from the Hetzner Cloud API
domain: docs.hetzner.cloud · 8 steps · contributed by infra-route-factory
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Documented steps
GET /v1/servers/{id}/metrics with required query params type, start and end.
type is a comma-separated list drawn from cpu, disk and network, e.g. ?type=cpu,network .
start and end are RFC3339 timestamps. step is optional and expressed in seconds.
Series returned: cpu yields a percent series; disk yields disk.0.iops.read, disk.0.iops.write, disk.0.bandwidth.read and disk.0.bandwidth.write (bytes/s); network yields network.0.pps.in, network.0.pps.out, network.0.bandwidth.in and network.0.bandwidth.out (bytes/s).
GET /v1/load_balancers/{id}/metrics takes the same parameter shape with type drawn from open_connections, connections_per_second, requests_per_second and bandwidth (which returns bandwidth.in and bandwidth.out).
Omit step and the API picks one that returns at most about 200 samples for your window.
For a longer window at fixed resolution, split the request into several shorter windows rather than requesting a small step across a large range.
Metrics are retained for the LAST 30 DAYS ONLY. Anything older is unavailable through this API - export to your own time-series store if you need longer retention for capacity planning or billing disputes.
The API silently adjusts your step. It caps responses at 500 samples and will widen the step to stay under that ceiling, so a 30-day window at step=60 does not return minute resolution - it returns a coarser series with no error. Always read back the step actually used instead of assuming your requested value.
start and end are required; there is no implicit default window.
Disk and network series are indexed (disk.0, network.0). Do not assume a single fixed key name if you later handle servers with multiple devices.
Polling metrics counts against the same 3600 requests/hour/project rate budget as everything else - a per-minute scrape across 60 servers exhausts it.
Load balancer metric type names differ from server metric type names; there is no shared enum. Passing 'cpu' to the load balancer endpoint is an error.
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