Oracle Cloud Infrastructure Documentation

Instance Pool Metrics

You can monitor the health, capacity, and performance of your Compute instance pools by using metrics, alarms, and notifications.

This topic describes the metrics emitted by the metric namespace oci_instancepools.

Resources: Compute instance pools.

Overview of Metrics: oci_instancepools

The instance pool metrics help you monitor the lifecycle state of instances in your instance pools.

Required IAM Policy

To monitor resources, you must be granted the required type of access in a policy  written by an administrator, whether you're using the Console or the REST API with an SDK, CLI, or other tool. The policy must give you access to both the monitoring services and the resources being monitored. If you try to perform an action and get a message that you don't have permission or are unauthorized, contact the administrator to find out what type of access you were granted and which compartment  you need to work in. For more information about user authorizations for monitoring, see IAM Policies.

Available Metrics: oci_instancepools

The metrics listed in the following table are automatically available for each instance pool that you create. You do not need to enable monitoring on the instances in the pool to get these metrics.

You also can use the Monitoring service to create custom queries. See Building Metric Queries.

Depending on the metric, the following dimensions  are available:

AvailabilityDomain
The availability domain  where the instance pool resides.
DisplayName
The friendly name of the instance pool.
FaultDomain
The fault domain  where the instance pool resides.
region
The region  where the instance pool resides.
resourceId
The OCID  of the instance pool.
Metric Metric Display Name Unit Description Dimensions
InstancePoolSize Instance Pool Size instances Number of instances in the pool.

DisplayName

region

resourceId

ProvisioningInstances Instances Provisioning instances Number of instances in the pool that are provisioning.

AvailabilityDomain

DisplayName

FaultDomain

region

resourceId

RunningInstances Instances Running instances Number of running instances in the pool.

AvailabilityDomain

DisplayName

FaultDomain

region

resourceId

TerminatedInstances Instances Terminated instances Number of instances in the pool that are terminating or terminated.

AvailabilityDomain

DisplayName

FaultDomain

region

resourceId

Using the Console

To view default metric charts for a single instance pool
  1. Open the navigation menu  and select Compute. Under Compute, select Instance Pools.
  2. Click the instance pool that you're interested in.
  3. Under Resources, click Metrics.

  4. In the Metric namespace list, select oci_instancepools.

    The Metrics page displays a default set of charts for the current instance pool.

For more information about monitoring metrics and using alarms, see Overview of Monitoring. For information about notifications for alarms, see Overview of Notifications.

To view default metric charts for all instance pools in a compartment
  1. Open the navigation menu  and select Observability & Management. Under Monitoring, select Service Metrics.
  2. Select a compartment.

  3. For Metric namespace, select oci_instancepools.

    The Service Metrics page dynamically updates the page to show charts for each metric that is emitted by the selected metric namespace.

For more information about monitoring metrics and using alarms, see Overview of Monitoring. For information about notifications for alarms, see Overview of Notifications.