How to send alert message without any delay

[equestriansean]

• What Grafana version and what operating system are you using?
  Grafana 8.0.3 docker with ngalert feature enabled

• What are you trying to achieve?
  Try to receive slack notification faster without any delay.

• How are you trying to achieve it?

1. Enable ngalert feature
2. Create an alert rule
3. Add slack webhook as a contact point

• What happened?
  I noticed that when an alert fired, the alert message can not be sent to Slack channel immediately, it usually take few minutes. It looks like there are something like aggregation in new ngalert feature.

• What did you expect to happen?
  I wish alert message could not sent to slack channel immediately once an alert fired

• Can you copy/paste the configuration(s) that you are having problems with?

• Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.

• Did you follow any online instructions? If so, what is the URL?

[equestriansean]

answering myself, change group interval to 1s could reduce time delay

[mydansun]

Thank you!

I would explain this with more details.

Try to reduce these numbers up to your need!

[wally007]

Any idea how to make alert go off immediately it crosses threshold without waiting “for”

Basically i want to evaluate the alert every 1 minute and as soon as X is detected , i want to be alerted. I dont need any “cooling” or “pending” period.

[georgerobinson]

Set for to 0s.