docs-v2/content/flux/v0/stdlib/influxdata/influxdb/monitor/from.md

title	description	menu	weight
monitor.from() function	`monitor.from()` retrieves check statuses stored in the `statuses` measurement in the `_monitoring` bucket.	flux_v0_ref name parent identifier monitor.from influxdata/influxdb/monitor influxdata/influxdb/monitor/from	301

monitor.from() retrieves check statuses stored in the statuses measurement in the _monitoring bucket.

Function type signature

(
    start: A,
    ?fn: (
        r: {
            B with
            _value: C,
            _time: time,
            _stop: time,
            _start: time,
            _measurement: string,
            _field: string,
        },
    ) => bool,
    ?stop: D,
) => stream[E] where E: Record

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

start

({{< req >}}) Earliest time to include in results.

Use a relative duration, absolute time, or integer (Unix timestamp in seconds). For example, -1h, 2019-08-28T22:00:00Z, or 1567029600. Durations are relative to now().

stop

Latest time to include in results. Default is now().

Use a relative duration, absolute time, or integer (Unix timestamp in seconds). For example, -1h, 2019-08-28T22:00:00Z, or 1567029600. Durations are relative to now()

fn

Predicate function that evaluates true or false.

Records or rows (r) that evaluate to true are included in output tables. Records that evaluate to null or false are not included in output tables.

Examples

View critical check statuses from the last hour

import "influxdata/influxdb/monitor"

monitor.from(start: -1h, fn: (r) => r._level == "crit")