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Slack alert

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The Slack alert method allows sending a predefined notification through Slack to notify Nobl9 users whenever an incident is triggered.


To set up the Slack integration, you’ll need to provide an Incoming Webhook URL. This allows Slack to send an automated notification to a channel of your choice. Refer to steps 2 and 3 of Getting started with Incoming Webhooks | Slack documentation.


You can find instructions how to create an Incoming Webhook URL here.

If you need any further help, contact your Slack administrator.

Known limitations​

Currently, Nobl9 doesn't return the severity level when a Slack alert is triggered.

Configuring the Slack alert method​

You can configure your Slack alert method directly in the Nobl9 UI, or by applying a YAML file in sloctl.

Nobl9 UI​

To set up the alert method in the Nobl9 UI, follow these steps:

  1. Navigate to Integrations > Alert Methods.
  2. Click .
  3. Click the relevant Alert Method icon.

Then, in the Slack Configuration Wizard:

  1. Enter the URL.
    This is your Incoming Webhook URL. It must start with For more information, refer to the Authentication section.
  1. Select a Project.
    Specifying a project is helpful when multiple users are spread across multiple teams or projects. When the Project field is left blank, Nobl9 uses the default project.
  2. Enter a Display Name.
    You can enter a user-friendly name with spaces in this field.
  3. Enter a Name.
    The name is mandatory and can only contain lowercase, alphanumeric characters, and dashes (for example, my-alert-method-1). Nobl9 duplicates the display name here, transforming it into the supported format, but you can edit the result.
  4. Enter a Description.
    Here you can add details such as who is responsible for the integration (team/owner) and the purpose of creating it.
  5. Click Add Alert Method.

YAML configuration​

Here’s a general specification for adding a Slack alert method through YAML:

apiVersion: n9/v1alpha
kind: AlertMethod
name: # string
displayName: # string
description: # string
url: # string, must start with

Testing the Slack alert method in the UI​

You can test alert methods for all notification services supported by the Nobl9 platform through the UI.

To verify the correctness of your alert method configuration:

  1. Navigate to Integrations > Alert Methods.
  2. Click the required alert method.
    Its Details page opens.
  3. Click Test under the alert method name:
    • For the correct configuration, Nobl9 displays Test completed successfully! under the button
    • Otherwise, Nobl9 displays the Test failed message, specifying what is set incorrectly

Slack alert method | Terraform documentation