Slack & Dagster Cloud#

In the UI#

1. Create and configure an alert policy. Refer to the Managing alerts in Dagster Cloud guide for more info.

2. In the Notification Service section of the Create alert policy window, select the Slack option.

3. In the field that displays, enter the name of the Slack channel you added the @Dagster Cloud bot user to.

   Note: One channel is allowed per alert policy. To post alerts to multiple channels, first invite the @Dagster Cloud bot and then create a new alert policy that posts to that channel.

4. Click Save policy.

dagster-cloud CLI#

To define a Slack alert policy in code, use the following keys to configure the alert:

• notification_service.slack.slack_workspace_name - The name of the Slack workspace connected to Dagster Cloud
• notification_service.slack.slack_channel_name - The name of the Slack channel the @Dagster Cloud user is a member of

# alert_policies.yaml

alert_policies:
  - name: "slack-alert-policy"
    description: "An alert policy to send a Slack notification to sales on job failure or success."
    tags:
      - key: "team"
        value: "sales"
    event_types:
      - "JOB_SUCCESS"
      - "JOB_FAILURE"
    notification_service:
      slack:
        slack_workspace_name: "hooli"
        slack_channel_name: "sales-notifications"

Then, use the dagster-cloud CLI to set the alert policies for the deployment:

dagster-cloud deployment alert-policies sync -a /path/to/alert_policies.yaml

Refer to the Managing alerts using the dagster-cloud CLI guide for more information.