# Repeat Notification Interval

> Control how often Last9 re-notifies you while an alert stays firing. Configure a custom interval, cap the number of repeats, or turn off repeat notifications entirely with notify-once.

Source: https://last9.io/docs/repeat-notification-interval/

Control how often Last9 re-notifies your channels while an alert stays firing. You can set a custom interval, cap the number of reminders, or turn off repeats entirely (**notify-once**) — at both the organization level and per alert group.

:::note
Recovery (resolved) notifications are always sent on state transition and are not affected by this setting.
:::

## Settings

There are three fields:

| Field                         | Description                                                                                                                                                          |
| ----------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Repeat while firing**       | Toggle. When **on**, Last9 keeps re-sending notifications while the alert stays firing. Turn **off** for notify-once behavior (one notification per firing episode). |
| **Repeat interval (seconds)** | How long to wait between repeat notifications. Default: `3600` (1 hour for threshold/anomaly alerts).                                                                |
| **Maximum repeats**           | How many times to repeat per firing episode. Use `-1` for unlimited. Set a positive integer to cap reminders.                                                        |

## Two Levels of Configuration

### Organization-wide defaults

Set defaults that apply to all alert groups unless overridden.

1. Navigate to **Alerting** → **Notification Settings**
2. Enable **Override defaults** to unlock the fields
3. Configure **Repeat while firing**, **Repeat interval**, and **Maximum repeats**
4. Click **Save**

![Notification Settings — organization level](../../../../../assets/content/docs/alerting/guides/repeat-notification-interval-org-settings.png)

### Per alert group

Override the org defaults for a specific alert group.

1. Navigate to **Alerting** → **Alert Groups** → select an alert group
2. Click the ⚙️ icon → **Settings** → **Notifications** → **Settings** tab
3. Enable **Override defaults** to unlock per-group values
4. Configure the fields and click **Save**

![Notification Settings — per alert group](../../../../../assets/content/docs/alerting/guides/repeat-notification-interval-group-settings.png)

:::tip
**Override defaults** must be toggled on before you can edit the fields. When toggled off, the group uses organization-wide values.
:::

## Common Configurations

**Notify-once** — one notification per firing episode, no reminders:

- Turn off **Repeat while firing**

**Custom interval, unlimited repeats** — re-notify every 30 minutes forever:

- Keep **Repeat while firing** on
- Set **Repeat interval** to `1800`
- Set **Maximum repeats** to `-1`

**Capped reminders** — re-notify every hour, stop after 3 reminders:

- Keep **Repeat while firing** on
- Set **Repeat interval** to `3600`
- Set **Maximum repeats** to `3`

## Via Terraform

Configure renotify settings on a `last9_entity` resource using the three optional fields. Omit all three to inherit the org default.

**Notify-once** — suppress all repeat notifications:

```hcl
resource "last9_entity" "api" {
  name         = "api-service"
  type         = "service"
  entity_class = "alert-manager"
  external_ref = "api-service-prod"

  renotify_enabled = false
}
```

**Custom interval with a cap**:

```hcl
resource "last9_entity" "api" {
  name         = "api-service"
  type         = "service"
  entity_class = "alert-manager"
  external_ref = "api-service-prod"

  renotify_enabled          = true
  renotify_interval_seconds = 1800  # every 30 minutes
  renotify_occurrences      = 3     # stop after 3 repeats
}
```

**Unlimited repeats** — re-notify forever at a custom interval:

```hcl
  renotify_enabled          = true
  renotify_interval_seconds = 3600
  renotify_occurrences      = -1
```

To reset a group back to org defaults, remove all three `renotify_*` fields and run `terraform apply`.

:::note
`renotify_interval_seconds` must be ≥ 1. `renotify_occurrences` must be `-1` (unlimited) or ≥ 1. Org-level defaults are set in the UI only and cannot be managed via Terraform.
:::

## Default Behavior

If you don't override, the system default applies: **Repeat while firing on, interval 3600 seconds, no cap.**

Existing alert groups are unaffected unless you explicitly change settings.

## Notes

- Settings apply to all notification channels (Slack, email, webhook, PagerDuty, OpsGenie, Flock, GoAlert)
- Per-group settings take precedence over org-wide defaults when **Override defaults** is on
- A new firing episode (resolved → fires again) resets the repeat counter
- **SLO alerts:** The repeat interval for SLO alerts is derived from the SLO window and is not configurable via this setting. The org/group settings apply to threshold and anomaly alert groups only.

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## Troubleshooting

Please get in touch with us on [Discord](https://discord.com/invite/Q3p2EEucx9) or [Email](mailto:support@last9.io) if you have any questions.