Section – Prometheus

Airlock-specific metrics in Prometheus format

The following table lists Airlock-specific metrics that are exposed i.e. for monitoring licensed throughput and common gateway indicator values. Prometheus supports different metric types such as counter, gauge, histogram, and summary.

Read more about metrics types here https://prometheus.io/docs/concepts/metric_types/.

The scope of exposed Prometheus metrics also includes a set of standard low-level general-purpose system metrics.

A metric is published when there has been at least one sample point. The reason is that a sample is required before any output can be generated.

Note the following:
Statistically relevant statements always require a sufficient basis such as a certain number of requests, e.g. if http_requests_duration_seconds_count >1000.
Some metrics provide mapping names as metadata in the form of labels that can be used to assign metrics per mapping.

Read more here about labels here: https://prometheus.io/docs/concepts/data_model/#metric-names-and-labels
Read more about how to query metadata here: https://prometheus.io/docs/prometheus/latest/querying/api/#querying-metadata

Metric name	Metric type	Unit	Description
`http_requests_current`	Gauge	integer	The number of currently processed requests.
`http_requests_duration_seconds_sum`	Gauge	integer	The duration of request processing in seconds.
`http_requests_duration_seconds_count`	Counter	integer	The number of requests that are used for `http_requests_duration_seconds_sum`. This counter is also used as the base for the timing statistics for `http_requests_duration_seconds`.
`http_requests_duration_seconds`	Histogram	floating point	Timing statistics (percentiles) for request processing durations. The histogram is calculated in quantiles, as described here https://prometheus.io/docs/practices/histograms/#quantiles.
`http_requests_allowed_total`	Counter	integer	The number of allowed requests.
`http_requests_blocked_total`	Counter	integer	The number of blocked requests.
`http_requests_rejected_total`	Counter	integer	The number of rejected requests.
`http_sessions_current`	Gauge	integer	The number of currently active sessions.
`http_sessions_authenticated_current`	Gauge	integer	The number of currently active authenticated sessions.
`airlock_workload_ratio`	Gauge	floating point	Ratio indicating the workload of the pod/system. Values range 0 = no load 1 = maximum load The load values can be interpreted as percentage information between 0–100% load.
`airlock_throughput`	Gauge	integer	Throughput used for licensing. The value denotes the rate of processed calls in calls/s, averaged over one-minute time windows. Only valid calls (requests) forwarded to protected services are counted. Corresponds to the calculated throughput logged in message with log_id "WR-SG-TIME-200".
`airlock_throughput_licensed`	Gauge	integer	Licensed aggregate throughput. Must be larger than the sum of the `airlock_throughput` outputs of all gateways in the same environment.