70 lines
1.8 KiB
Markdown
70 lines
1.8 KiB
Markdown
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---
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title: Alert on failed tasks
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seotitle: Alert on failed tasks.
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description: >
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Create an alert when a task fails.
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menu:
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v2_0:
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parent: Monitor & alert
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weight: 201
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v2.0/tags: [tasks]
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---
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Use a task to receive alerts when a task fails.
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## Example alert task script
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```js
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import "strings"
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import "regexp"
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import "influxdata/influxdb/monitor"
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import "influxdata/influxdb/v1"
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option task = {name: "Failed Tasks Check", every: 1h, offset: 4m}
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task_data = from(bucket: "_tasks")
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|> range(start: -1h, stop: now())
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|> filter(fn: (r) =>
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(r["_measurement"] == "runs"))
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|> filter(fn: (r) =>
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(r["_field"] == "logs"))
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|> map(fn: (r) => ({ r with name: strings.split(v: regexp.findString(r: /option task = \{([^\}]+)/, v: r._value), t: "\\\\\\\"")[1] }))
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|> drop(columns: ["_value", "_start", "_stop"])
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|> group(columns: ["name", "taskID", "status", "_measurement"])
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|> map(fn: (r) =>
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({r with _value: if r.status == "failed" then 1 else 0}))
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|> last()
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check = {
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_check_id: "0000000deadbeef1",
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_check_name: "Failed Tasks Check",
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_type: "threshold",
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tags: {},
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}
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ok = (r) =>
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(r["logs"] == 0)
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crit = (r) =>
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(r["logs"] == 1)
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messageFn = (r) =>
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("The task: ${r.taskID} - ${r.name} has a status of ${r.status}")
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task_data
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|> v1["fieldsAsCols"]()
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|> monitor["check"](
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data: check,
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messageFn: messageFn,
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ok: ok,
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crit: crit,
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)
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```
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## Add your task
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Once your task is ready, see [Create a task](/influxdb/v2.0/process-data/manage-tasks/create-task) for information about adding it to InfluxDB.
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{{% note %}}
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This script does not send an email alert.
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For information on how to create notification emails, see
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[Create notification endpoints](/v2.0/monitor-alert/notification-endpoints/create)
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and [Create notification rules](/v2.0/monitor-alert/notification-rules/create).
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{{% /note %}}
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