Data Source: oci_monitoring_alarm

This data source provides details about a specific Alarm resource in Oracle Cloud Infrastructure Monitoring service.

Gets the specified alarm. For more information, see Getting an Alarm. For important limits information, see Limits on Monitoring.

This call is subject to a Monitoring limit that applies to the total number of requests across all alarm operations. Monitoring might throttle this call to reject an otherwise valid request when the total rate of alarm operations exceeds 10 requests, or transactions, per second (TPS) for a given tenancy.

Example Usage

data "oci_monitoring_alarm" "test_alarm" {
	#Required
	alarm_id = oci_monitoring_alarm.test_alarm.id
}

Argument Reference

The following arguments are supported:

alarm_id - (Required) The OCID of an alarm.

Attributes Reference

The following attributes are exported:

alarm_summary - Customizable alarm summary (alarmSummary alarm message parameter). Optionally include dynamic variables. The alarm summary appears within the body of the alarm message and in responses to ListAlarmStatus GetAlarmHistory and RetrieveDimensionStates.
body - The human-readable content of the delivered alarm notification. Optionally include dynamic variables. Oracle recommends providing guidance to operators for resolving the alarm condition. Consider adding links to standard runbook practices. Avoid entering confidential information. Example: High CPU usage alert. Follow runbook instructions for resolution.
compartment_id - The OCID of the compartment containing the alarm.
defined_tags - Usage of predefined tag keys. These predefined keys are scoped to namespaces. Example: {"Operations.CostCenter": "42"}
destinations - A list of destinations for alarm notifications. Each destination is represented by the OCID of a related resource, such as a topic. Supported destination services: Notifications, Streaming. Limit: One destination per supported destination service.
display_name - A user-friendly name for the alarm. It does not have to be unique, and it’s changeable.

This value determines the title of each alarm notification.

Example: High CPU Utilization
evaluation_slack_duration - Customizable slack period to wait for metric ingestion before evaluating the alarm. Specify a string in ISO 8601 format (PT10M for ten minutes or PT1H for one hour). Minimum: PT3M. Maximum: PT2H. Default: PT3M. For more information about the slack period, see About the Internal Reset Period.
freeform_tags - Simple key-value pair that is applied without any predefined name, type or scope. Exists for cross-compatibility only. Example: {"Department": "Finance"}
id - The OCID of the alarm.
is_enabled - Whether the alarm is enabled. Example: true
is_notifications_per_metric_dimension_enabled - Whether the alarm sends a separate message for each metric stream. See Creating an Alarm That Splits Messages by Metric Stream. Example: true
message_format - The format to use for alarm notifications. The formats are:
- RAW - Raw JSON blob. Default value. When the destinations attribute specifies Streaming, all alarm notifications use this format.
- PRETTY_JSON: JSON with new lines and indents. Available when the destinations attribute specifies Notifications only.
- ONS_OPTIMIZED: Simplified, user-friendly layout. Available when the destinations attribute specifies Notifications only. Applies to Email subscription types only.
metric_compartment_id - The OCID of the compartment containing the metric being evaluated by the alarm.
metric_compartment_id_in_subtree - When true, the alarm evaluates metrics from all compartments and subcompartments. The parameter can only be set to true when metricCompartmentId is the tenancy OCID (the tenancy is the root compartment). A true value requires the user to have tenancy-level permissions. If this requirement is not met, then the call is rejected. When false, the alarm evaluates metrics from only the compartment specified in metricCompartmentId. Default is false. Example: true
namespace - The source service or application emitting the metric that is evaluated by the alarm. Example: oci_computeagent
notification_title - Customizable notification title (title alarm message parameter). Optionally include dynamic variables. The notification title appears as the subject line in a formatted email message and as the title in a Slack message.
notification_version - The version of the alarm notification to be delivered. Allowed value: 1.X The value must start with a number (up to four digits), followed by a period and an uppercase X.
overrides - A set of overrides that control evaluations of the alarm.

Each override can specify values for query, severity, body, and pending duration. When an alarm contains overrides, the Monitoring service evaluates each override in order, beginning with the first override in the array (index position 0), and then evaluates the alarm’s base values (ruleName value of BASE).
- body - The human-readable content of the delivered alarm notification. Optionally include dynamic variables. Oracle recommends providing guidance to operators for resolving the alarm condition. Consider adding links to standard runbook practices. Avoid entering confidential information. Example: High CPU usage alert. Follow runbook instructions for resolution.
- pending_duration - The period of time that the condition defined in the alarm must persist before the alarm state changes from “OK” to “FIRING”. For example, a value of 5 minutes means that the alarm must persist in breaching the condition for five minutes before the alarm updates its state to “FIRING”.
  
  The duration is specified as a string in ISO 8601 format (PT10M for ten minutes or PT1H for one hour). Minimum: PT1M. Maximum: PT1H. Default: PT1M.
  
  Under the default value of PT1M, the first evaluation that breaches the alarm updates the state to “FIRING”.
  
  The alarm updates its status to “OK” when the breaching condition has been clear for the most recent minute.
  
  Example: PT5M
- query - The Monitoring Query Language (MQL) expression to evaluate for the alarm. The Alarms feature of the Monitoring service interprets results for each returned time series as Boolean values, where zero represents false and a non-zero value represents true. A true value means that the trigger rule condition has been met. The query must specify a metric, statistic, interval, and trigger rule (threshold or absence). Supported values for interval depend on the specified time range. More interval values are supported for smaller time ranges. You can optionally specify dimensions and grouping functions. Also, you can customize the absence detection period. Supported grouping functions: grouping(), groupBy(). For information about writing MQL expressions, see Editing the MQL Expression for a Query. For details about MQL, see Monitoring Query Language (MQL) Reference. For available dimensions, review the metric definition for the supported service. See Supported Services.
  
  Example of threshold alarm:
  
  CpuUtilization[1m]{availabilityDomain=“cumS:PHX-AD-1”}.groupBy(availabilityDomain).percentile(0.9) > 85
  
  Example of absence alarm:
  
  CpuUtilization[1m]{availabilityDomain=“cumS:PHX-AD-1”}.absent()
  
  —– Example of absence alarm with custom absence detection period of 20 hours:
  
  —– CpuUtilization[1m]{availabilityDomain=“cumS:PHX-AD-1”}.absent(20h) —–
- rule_name - A user-friendly description for this alarm override. Must be unique across all ruleName values for the alarm.
- severity - The perceived severity of the alarm with regard to the affected system. Example: CRITICAL
pending_duration - The period of time that the condition defined in the alarm must persist before the alarm state changes from “OK” to “FIRING”. For example, a value of 5 minutes means that the alarm must persist in breaching the condition for five minutes before the alarm updates its state to “FIRING”.

The duration is specified as a string in ISO 8601 format (PT10M for ten minutes or PT1H for one hour). Minimum: PT1M. Maximum: PT1H. Default: PT1M.

Under the default value of PT1M, the first evaluation that breaches the alarm updates the state to “FIRING”.

The alarm updates its status to “OK” when the breaching condition has been clear for the most recent minute.

Example: PT5M
query - The Monitoring Query Language (MQL) expression to evaluate for the alarm. The Alarms feature of the Monitoring service interprets results for each returned time series as Boolean values, where zero represents false and a non-zero value represents true. A true value means that the trigger rule condition has been met. The query must specify a metric, statistic, interval, and trigger rule (threshold or absence). Supported values for interval depend on the specified time range. More interval values are supported for smaller time ranges. You can optionally specify dimensions and grouping functions. Also, you can customize the absence detection period. Supported grouping functions: grouping(), groupBy(). For information about writing MQL expressions, see Editing the MQL Expression for a Query. For details about MQL, see Monitoring Query Language (MQL) Reference. For available dimensions, review the metric definition for the supported service. See Supported Services.

Example of threshold alarm:

CpuUtilization[1m]{availabilityDomain=“cumS:PHX-AD-1”}.groupBy(availabilityDomain).percentile(0.9) > 85

Example of absence alarm:

CpuUtilization[1m]{availabilityDomain=“cumS:PHX-AD-1”}.absent()

—– Example of absence alarm with custom absence detection period of 20 hours:

—– CpuUtilization[1m]{availabilityDomain=“cumS:PHX-AD-1”}.absent(20h) —–
repeat_notification_duration - The frequency for re-submitting alarm notifications, if the alarm keeps firing without interruption. Format defined by ISO 8601. For example, PT4H indicates four hours. Minimum: PT1M. Maximum: P30D.

Default value: null (notifications are not re-submitted).

Example: PT2H
resolution - The time between calculated aggregation windows for the alarm. Supported value: 1m
resource_group - Resource group that you want to match. A null value returns only metric data that has no resource groups. The specified resource group must exist in the definition of the posted metric. Only one resource group can be applied per metric. A valid resourceGroup value starts with an alphabetical character and includes only alphanumeric characters, periods (.), underscores (_), hyphens (-), and dollar signs ($). Example: frontend-fleet
rule_name - Identifier of the alarm’s base values for alarm evaluation, for use when the alarm contains overrides. Default value is BASE. For information about alarm overrides, see AlarmOverride.
severity - The perceived type of response required when the alarm is in the “FIRING” state. Example: CRITICAL
state - The current lifecycle state of the alarm. Example: DELETED
suppression - The configuration details for suppressing an alarm.
- description - Human-readable reason for suppressing alarm notifications. It does not have to be unique, and it’s changeable. Avoid entering confidential information.
  
  Oracle recommends including tracking information for the event or associated work, such as a ticket number.
  
  Example: Planned outage due to change IT-1234.
- time_suppress_from - The start date and time for the suppression to take place, inclusive. Format defined by RFC3339. Example: 2023-02-01T01:02:29.600Z
- time_suppress_until - The end date and time for the suppression to take place, inclusive. Format defined by RFC3339. Example: 2023-02-01T02:02:29.600Z
time_created - The date and time the alarm was created. Format defined by RFC3339. Example: 2023-02-01T01:02:29.600Z
time_updated - The date and time the alarm was last updated. Format defined by RFC3339. Example: 2023-02-03T01:02:29.600Z