Azure Monitor Action Rules Schedule

Question

Hello,

I am looking into suppressing an alert the following way:

• Monday, Tuesday, Wednesday, Thursday, Friday it should be suppressed before 07:00 UTC and after 19:00 UTC.
• Saturday, Sunday it should be suppressed before 09:00 UTC and after 17:00 UTC.

The way I am trying to achieve this is via two separate action rules with the following schedule (Terraform snippet):

  suppression {
    recurrence_type = "Weekly"

    schedule {
      start_date_utc    = "2021-01-01T19:00:00Z"
      end_date_utc      = "2026-01-01T07:00:00Z"
      recurrence_weekly = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"]
    }
  }

  suppression {
    recurrence_type = "Weekly"

    schedule {
      start_date_utc    = "2021-01-01T17:00:00Z"
      end_date_utc      = "2026-01-01T09:00:00Z"
      recurrence_weekly = ["Saturday", "Sunday"]
    }
  }

As you'll notice the start time is 19:00 / 17:00 UTC and the end time is 07:00 / 09:00 UTC. I am doing this to avoid creating 4 rules, two for the start of day (e.g. 00:00 - 07:00 / 00:00 - 09:00 and 19:00 - 23:59 / 17:00 - 23:59) however I am not completely sure (and it's rather difficult to test) that this will work as expected.

The alternative with the 4 rules would look as follows:

  suppression {
    recurrence_type = "Weekly"

    schedule {
      start_date_utc    = "2021-01-01T00:00:00Z"
      end_date_utc      = "2026-01-01T07:00:00Z"
      recurrence_weekly = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"]
    }
  }

  suppression {
    recurrence_type = "Weekly"

    schedule {
      start_date_utc    = "2021-01-01T19:00:00Z"
      end_date_utc      = "2026-01-01T23:59:59Z"
      recurrence_weekly = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"]
    }
  }

  suppression {
    recurrence_type = "Weekly"

    schedule {
      start_date_utc    = "2021-01-01T00:00:00Z"
      end_date_utc      = "2026-01-01T09:00:00Z"
      recurrence_weekly = ["Saturday", "Sunday"]
    }
  }

  suppression {
    recurrence_type = "Weekly"

    schedule {
      start_date_utc    = "2021-01-01T17:00:00Z"
      end_date_utc      = "2026-01-01T23:59:59Z"
      recurrence_weekly = ["Saturday", "Sunday"]
    }
  }

Any help with this question is appreciated.

Thank you,
Cosmin

Answer 1

Hi @Cosmin Stirbu ,

AFAIK it should work as expected w.r.t this Azure Action Rules preview feature as the hyperlinked official documentation mentions that it suppresses notifications within a bounded duration. For reference, you may check below documentation screenshot as well.

However, as this feature is currently in preview state so I will check internally if there might be an issue for such longer duration schedule (i.e., 5 years in this case) and will update you at the earliest possible.

Also just FYI, as the testing is using Terraform Azure provider (azurerm_monitor_action_rule_suppression) so going forward if you face any issue or error in the Terraform level then I would recommend you to ask the question in Terraform Azure Provider Community Forum.

Documentation screenshot:

Portal screenshot: