Send Events from Edge Delta Monitors to Slack

Send events to Slack.

  3 minute read  

Overview

You can configure Edge Delta to send alerts to Slack. They can originate from either the edge within a pipeline configuration, or they can originate from a centralized monitor. See Threshold-Based Alerts with Edge Delta Monitors for an overview of pipeline thresholds vs threshold monitors. Also see Send Events from an Edge Delta Pipeline to Slack for configuring the edge.

Prepare Slack

You need to create a Slack app and configure it with an incoming webhook to receive notifications from Edge Delta.

  1. Navigate and log in to Your Apps on the Slack API website: https://api.slack.com/apps.
  2. Click Create New App.
  3. Select From scratch.
  4. Name the app and select your Slack workspace.
  5. Click Create App.
  6. Click Incoming Webhooks and select Activate Incoming Webhooks.
  7. Click Add New Webhook.
  8. Select a channel you want the app to post notifications to and click Allow.
  9. Copy the webhook URL

Send Events from Monitors

With the Slack app configured, you can trigger notifications from monitors.

To send a notification from a monitor to Slack, you need to first configure a Slack Integration.

  1. In Edge Delta, click Admin.
  2. Click Legacy Integrations.
  3. Click Available.
  4. Search for and select Slack.
  5. Enter a name for the integration.
  6. Enter the webhook URL you copied earlier as the endpoint.
  7. Leave the other fields blank and click Save.

Next you configure a monitor. In this example, a metric threshold monitor will be configured. It will monitor a metric generated in the node pipelines called error-logs-per-minute, which counts the number of error logs per minute, across all pipelines.

While configuring the Notifications section, you type @ and use autocomplete to select the Slack integration you created earlier.

In this instance, a number of notification values are specified along with the Slack destination:

{{#is_alert}}
The {{service.name}} service in the {{ed.tag}} cluster hit a threshold.
VALUES: 
* alert threshold:{{alert_threshold}}
* comparator: {{comparator}}
* ed.tag : {{ed.tag}}
* evaluated from : {{evaluated_from}} to: {{evaluated_to}}
* first triggered at:{{first_triggered_at}}
* org id: {{org_id}}
* service name: {{service.name}}
* top patterns: {{top_patterns}}
* triggered duration seconds: {{triggered_duration_sec}}
* value: {{value}}
* warn threshold: {{warn_threshold}}

@slack-legacy-slack-integration-basic
{{/is_alert}}

When the monitor generates an event, it sends an alert to Slack. The event itself can be seen in the Monitor Events page:

{
  "timestamp": 1749031618893,
  "event_domain": "Monitor Alerts",
  "event_type": "metric_threshold",
  "severity_text": "ALERT",
  "body": "Slack Legacy Integration for ed.tag:slacker,service.name:loggen",
  "resource": {
    "ed.monitor.id": "2y2B1q3XZrvz0rOZuLLxVaneU4T",
    "event.name": "Slack Legacy Integration",
    "service.name": "loggen"
  },
  "attributes": {
    "ed.monitor.evaluated.from": "2025-06-04T09:58:00.000Z",
    "ed.monitor.evaluated.to": "2025-06-04T10:03:00.000Z",
    "ed.monitor.evaluated.value": "55.60",
    "ed.monitor.group.id": "MhdBMl8aEW+QxHRoRtBZVWDLNTiD0sIyojWPRoOtV+o=",
    "ed.monitor.group.name": "ed.tag:slacker,service.name:loggen",
    "ed.monitor.notification.message": "**error-logs-per-minute** for **ed.tag:slacker,service.name:loggen** **>** **55** **avg** within the last **5m0s** evaluated from **2025-06-04T09:58:00.000Z** to **2025-06-04T10:03:00.000Z**.\n The monitor was last triggered at **2025-06-04T10:06:58.893Z**",
    "ed.monitor.observation.url": "https://app.edgedelta.com/metrics/explorer?query=sum:error-logs-per-minute{ed.tag:\"slacker\" AND service.name:\"loggen\"}&from=2025-06-04T09:43:00.000Z&to=2025-06-04T10:03:00.000Z",
    "ed.monitor.priority": "NOT DEFINED",
    "ed.monitor.query": "sum:error-logs-per-minute{*} by {service.name,ed.tag}.rollup(60)",
    "ed.monitor.screenshot.url": "https://p.edgedelta.com/d27fe6c2-5fc5-4ef8-8750-e1feaf94daa3/plots/2025-06-04/1cb4ed87-5607-483a-99af-69b7b8da7be5.png",
    "ed.monitor.type": "metric_threshold",
    "event.id": "2y2TNDdF0aKe5ijl8bfhoirPIKR"
  }
}

In Slack, the message appears along with the monitor values populated where possible: