Implement common use cases

This page describes how to implement common use cases using the Cloud Quotas API. This API lets you programmatically adjust quotas and automate quota adjustments in your Google Cloud projects, folders, or organization.

To learn more, see the Cloud Quotas API overview and reference.

Limitations

Cloud Quotas has the following limitations:

Quota increase adjustments must be made at the project-level and are subject to Google Cloud approval.
You can request quota decrease adjustments for project-, folder-, and organization-level quotas.
The Cloud Quotas API only supports project-level operations. Folder-level and organization-level operations are not supported.

Track usage and request an increase when usage is over 80%

This example tracks quota usage with Cloud Monitoring and then requests an increase when the usage is over 80%.

Call the QuotaInfo resource for your service to determine the current quotaValue. The service in this example is compute.googleapis.com:
```
GET projects/PROJECT_NUMBER/locations/global/services/compute.googleapis.com/quotaInfos
```
Replace PROJECT_NUMBER with the project number for your project.

To find the CPUs per project and the applicable locations, look through the QuotaInfo response for the CPUS-per-project-region quota ID. The quotaValue is 20.

"quotaInfos": [
    ...
     {
        "name": "projects/PROJECT_NUMBER/locations/global/services/compute.googleapis.com/quotaInfos/CPUS-per-project-region",
        "quotaId": "CPUS-per-project-region",
        "metric": "compute.googleapis.com/cpus",
        "containerType": "PROJECT",
        "dimensions": [
            "region"
        ],
        "dimensionsInfo": [
            {
                "dimensions": [],
                "details": {
                    "quotaValue": 20,
                    "resetValue": 20
                },
                "applicableLocations": [
                    "us-central1",
                    "us-central2",
                    "us-west1",
                    "us-east1"
                ]
            }
        ]
    },
    ...
]

Call the Cloud Monitoring API to find the quota usage. In the following example, the region us-central1 has been specified. Supported quota metrics are listed under serviceruntime.

{
"name": "projects/PROJECT_NUMBER"
    "filter": "metric.type=\"serviceruntime.googleapis.com/quota/allocation/usage\" AND
    metric.labels.quota_metric=\"compute.googleapis.com/cpus\" AND resource.type=\"consumer_quota\" AND
    resource.label.location=\"us-central1\" ",
    "interval": {
    "startTime": "2023-11-10T18:18:18.0000Z",
    "endTime": "2023-11-17T18:18:18.0000Z"
    },
    "aggregation": {
    "alignmentPeriod": "604800s", // 7 days
    "perSeriesAligner": "ALIGN_MAX",
    "crossSeriesReducer": "REDUCE_MAX"
    }
}

To determine your usage, handle the response from the Cloud Monitoring API. Compare the value from Cloud Monitoring to the quotaValue in earlier steps to determine the usage.

In the following example response the usage value in Cloud Monitoring is 19 in the us-central1 region. The quotaValue for all regions is 20. The usage is greater than 80% of the quota, and a quota preference update can be initiated.

time_series {
 metric {
  labels {
   key: "quota_metric"
   value: "compute.googleapis.com/cpus"
  }
     type: "serviceruntime.googleapis.com/quota/allocation/usage"
  }
  resource {
    type: "consumer_quota"
    labels {
      key: "project_id"
      value: "PROJECT_ID"
    }
    labels {
      key: "location"
      value: "us-central1"
    }
  }
  metric_kind: GAUGE
  value_type: INT64
  points {
    interval {
      start_time {
        seconds: "2023-11-10T18:18:18.0000Z"
      }
      end_time {
        seconds: "2023-11-17T18:18:18.0000Z"
      }
    }
    value {
      int64_value: 19
    }
  }
}

To avoid duplicated quota preferences, call ListQuotaPreferences first to check if there are any pending requests. The reconciling=true flag calls pending requests.
```
GET projects/PROJECT_NUMBER/locations/global/quotaPreferences?filter=service=%22compute.googleapis.com%22%20AND%20quotaId=%22CPUS-per-project-region%22%20AND%20reconciling=true
```
Replace PROJECT_NUMBER with the project number for your project.
Call UpdateQuotaPreference to increase the quota value for region us-central1. In the following example, a new preferred value of 100 has been specified.

The field allow_missing is set to true. This tells the system to create a QuotaPreference resource where none exists with the provided name.
```
PATCH projects/PROJECT_NUMBER/locations/global/quotaPreferences/compute_googleapis_com-cpus-us-central1?allowMissing=true {
  "service": "compute.googleapis.com",
  "quotaId": "CPUS-per-project-region",
  "quotaConfig": { "preferredValue": 100 },
  "dimensions": { "region": "us-central1" }
}
```
To adjust the dimensions of your quota preference, you can do the following:
- If you want the quota preference to apply to all regions, remove the region information.
- If your quota is defined per zone, replace the region information with zone information.

Call GetQuotaPreference to check the status of the quota preference change:

GET projects/PROJECT_NUMBER/locations/global/quotaPreferences/compute_googleapis_com-cpus-us-central1

Replace PROJECT_NUMBER with the project number for your project. While Google Cloud evaluates the requested quota value, the reconciling status is set to true.

"name": "projects/PROJECT_NUMBER/locations/global/quotaPreferences/compute_googleapis_com-cpus-us-central1",
"service": "compute.googleapis.com",
"quotaId": "CPUS-per-project-region",
"quotaConfig": {
    "preferredValue": 100,
    "grantedValue": 50,
    "traceId": "123acd-345df23",
    "requestOrigin": "ORIGIN_UNSPECIFIED"
},
"dimensions": { "region": "us-central1" },
"reconciling": true,
"createTime": "2023-01-15T01:30:15.01Z",
"updateTime": "2023-01-16T02:35:16.01Z"

After the quota preference has been processed, the reconciling field is set to false. The grantedValue is the same as the preferredValue. The preferred quota is fully granted.

When Google Cloud denies or partially approves a customer request, the granted quota value can still be less than the preferred value.

Decrease a quota

The following example decreases the number of TPUs to 10 in each region.

Get the quota ID and the current quota value with a ListQuotaInfos call:
```
GET projects/PROJECT_NUMBER/locations/global/services/compute.googleapis.com/quotaInfos
```
Replace PROJECT_NUMBER with the project number for your project.

Look through the response fields to find a QuotaInfo entry for V2-TPUS-per-project-region.

"quotaInfos": [
    ...
     {
        "name": "projects/PROJECT_NUMBER/locations/global/services/compute.googleapis.com/quotaInfos/V2-TPUS-per-project-region",
        "quotaId": "V2-TPUS-per-project-region",
        "metric": "compute.googleapis.com/Tpus",
        "containerType": "PROJECT",
        "dimensions": [
            "region"
        ],
        "dimensionsInfo": [
            {
                "dimensions": [],
                "details": {
                    "quotaValue": 20,
                    "resetValue": 20
                },
                "applicableLocations": [
                    "us-central1",
                    "us-central2",
                    "us-west1",
                    "us-east1"
                ]
            }
        ]
    },
    ...
]

In this response the quota ID is V2-TPUS-per-project-region, and the current quotaValue is 20.

Reduce TPU quota in each region to 10 with a CreateQuotaPreferenceRequest. Set the preferredValue to 10.

POST projects/PROJECT_NUMBER/locations/global/quotaPreferences?quotaPreferenceId=compute_googleapis_com-Tpu-all-regions {
    "quotaConfig": {
        "preferredValue": 10
    },
    "dimensions": [],
    "service": "compute.googleapis.com",
    "quotaId": "V2-TPUS-per-project-region",
    "contactEmail": EMAIL
}

Confirm the new quota value with a GetQuotaInfo call that defines the quota ID as V2-TPUS-per-project-region.

GET projects/PROJECT_NUMBER/locations/global/services/compute.googleapis.com/quotaInfos/V2-TPUS-per-project-region

Replace PROJECT_NUMBER with the project number for your project. The following is an example response, the value is 10 and it is applicable in all regions.

"name": "projects/PROJECT_NUMBER/locations/global/services/compute.googleapis.com/quotaInfos/V2-TPUS-per-project-region",
"quotaId": "V2-TPUS-per-project-region",
"metric": "compute.googleapis.com/v2_tpus",
"containerType": "PROJECT",
"dimensions": [
    "region"
],
"dimensionsInfo": [
    {
        "dimensions": [],
        "details": {
            "value": 10,
        },
        "applicableLocations": [
            "us-central1",
            "us-central2",
            "us-west1",
            "us-east1"
        ]
    }
]

Copy quota preferences to another project

The following example copies all quota preferences from one project to another.

Call ListQuotaPreferences on the source project with no filter:
```
GET projects/PROJECT_NUMBER1/locations/global/quotaPreferences
```
PROJECT_NUMBER1 is the project number for the source project. The response contains all quota preferences for the source project.

For each quota preference in the response, call UpdateQuotaPreference and define the following fields:

name - The updated name field is taken from the response, and the source project number (PROJECT_NUMBER1) is replaced with the destination project number (PROJECT_NUMBER2).
service, quotaId, preferredValue, dimensions - These fields can be taken directly from the response as is.

for (QuotaPreference srcPreference : listResponse.getQuotaPreferences()) {
    QuotaPreference.Builder targetPreference = QuotaPreference.newBuilder()
        .setName(srcPreference.getName().replace("PROJECT_NUMBER1", "PROJECT_NUMBER2"))
        .setService(srcPreference.getService())
        .setQuotaId(srcPreference.getQuotaId())
        .setQuotaConfig(
            QuotaConfig.newBuilder().setPreferredValue(srcPreference.getQuotaConfig().getPreferredValue()))
        .putAllDimensions(srcPreference.getDimensionsMap());
    UpdateQuotaPreferenceRequest updateRequest = UpdateQuotaPreferenceRequest.newBuilder()
        .setQuotaPreference(targetPreference)
        .setAllowMissing(true)
        .build();
    cloudQuotas.updateQuotaPreference(updateRequest);
}

Call ListQuotaPreferences to verify the status of the quota preferences for the destination project:
```
GET projects/PROJECT_NUMBER2/locations/global/quotaPreferences
```
Replace PROJECT_NUMBER2 with the project number for your destination project.

List pending quota requests

To list all pending quota preference requests for a project, call ListQuotaPreferences with the filter reconciling=true.

Get projects/PROJECT_NUMBER/locations/global/quotaPreferences?reconciling=true

Replace PROJECT_NUMBER with the project number for your project.

The response for this request returns the latest pending quota preference. Because Cloud Quotas API is a declarative API, the latest quota preference is what the system tries to fulfill.

An example response looks similar to the following:

  "quotaPreferences": [
    {
      "name": "projects/PROJECT_NUMBER/locations/global/quotaPreferences/compute_googleapis_com-cpus-us-central1",
      "service": "compute.googleapis.com",
      "quotaId": "CPUS-per-project-region",
      "quotaConfig": {
        "preferredValue": 100,
        "grantedValue": 30,
        "traceId": "123acd-345df23",
        "requestOrigin": "ORIGIN_UNSPECIFIED"
      },
      "dimensions": {
        "region": "us-central1"
      },
      "reconciling": true,
      "createTime": "2023-01-15T01:30:15.01Z",
      "updateTime": "2023-01-16T02:35:16.01Z"
    },
    {
      "name": "projects/PROJECT_NUMBER/locations/global/quotaPreferences/compute_googleapis_com-cpus-cross-regions",
      "service": "compute.googleapis.com",
      "quotaId": "CPUS-per-project-region",
      "quotaConfig": {
        "preferredValue": 10,
        "grantedValue": 5,
        "traceId": "456asd-678df43",
        "requestOrigin": "ORIGIN_UNSPECIFIED"
      },
      "reconciling": true,
      "createTime": "2023-01-15T01:35:15.01Z",
      "updateTime": "2023-01-15T01:35:15.01Z"
    }
  ]

Request group quota increases

To request increases for a group of quotas in a new project, store the preferred quotas for the new project in a CSV file with the following values: service name, quota ID, preferred quota value, dimensions.

For each row in the CSV file, read the contents into the fields serviceName, quotaId, preferredValue, and dimensionMap.

CreateQuotaPreferenceRequest request =
  CreateQuotaPreferenceRequest.newBuilder()
     .setParent("projects/PROJECT_NUMBER/locations/global")
     .setQuotaPreferenceId(buildYourOwnQuotaPreferenceId(serviceName, quotaId, dimensionMap))
     .setQuotaPreference(
        QuotaPreference.newBuilder()
            .setService(serviceName)
            .setQuotaId(quotaId)
            .setQuotaConfig(QuotaConfig.newBuilder().setPreferredValue(preferredValue))
            .putAllDimensions(dimensionMap))
  .build();
cloudQuotas.createQuotaPreference(request);

Replace PROJECT_NUMBER with the project number for your project.

Because the target project is new, it is safe to call the CreateQuotaPreference method as you read and assign the fields. Alternatively, you can call the UpdateQuotaPreference method with allow_missing set to true.

The method buildYourOwnQuotaPreferenceId builds a quota preference ID from service name, quota ID, and a map of dimensions according to your naming scheme. Alternatively, you can choose not to set quota preference ID. A quota preference ID is generated for you.

Request adjustments on quotas that have no usage

For quotas that don't already have quota usage and that have service-specific dimensions such as vm_family, it is possible that those quotas might not be visible in the Google Cloud console. You may need to use the Cloud Quotas API instead.

For example, you might clone a project and know ahead of time that you need to increase the value for compute.googleapis.com/gpus_per_gpu_family. This value only appears in the Google Cloud console for GPU families that you have already used. To use the Cloud Quotas API to request an increase to NVIDIA_H100 GPUs in us-central1, you could send a request like the following:

POST projects/PROJECT_NUMBER/locations/global/quotaPreferences?quotaPreferenceId=compute_googleapis_com-gpus-us-central1-NVIDIA_H100 {
    "service": "compute.googleapis.com",
    "quotaId": "GPUS-PER-GPU-FAMILY-per-project-region",
    "quotaConfig": { "preferredValue": 100 },
    "dimensions": { "region": "us-central1", "gpu_family": "NVIDIA_H100" },
    "justification": "JUSTIFICATION",
    "contactEmail": "EMAIL"
}

Replace the following:

PROJECT_NUMBER: The unique identifier for your project.
JUSTIFICATION: The reason for this request.
EMAIL: An email address that can be used as a contact, in case Google Cloud needs more information to make a decision before additional quota can be granted.

For more information, see also the descriptions of Dimension precedence and Combining dimensions.

Get quota info for a service specific dimension

GPU family is a service specific dimension. The following example request uses the GPUS-PER-GPU-FAMILY-per-project-region quota ID to get the QuotaInfo resource.

GET projects/PROJECT_NUMBER/locations/global/services/compute.googleapis.com/quotaInfos/GPUS-PER-GPU-FAMILY-per-project-region

Replace PROJECT_NUMBER with the project number for your project.

This is an example response. For each unique gpu_family key, the quotaValue and applicableLocations is different:

"name": "projects/PROJECT_NUMBER/locations/global/services/compute.googleapis.com/quotaInfos/GpusPerProjectPerRegion",
"quotatName": "CPUS-per-project-region",
"metric": "compute.googleapis.com/gpus_per_gpu_family",
"isPrecise": true,
"quotaDisplayName": "GPUs per GPU family",
"metricDisplayName": "GPUs",
"dimensions": [
    "region",
    "gpu_family"
],
"dimensionsInfo": [
    {
        "dimensions": {
            "region": "us-central1",
            "gpu_family": "NVIDIA_H200"
        },
        "details": {
            "quotaValue": 30,
            "resetValue": 30,
        },
        "applicableLocations": [
            "us-central1"
        ]
    },
    {
        "dimensions": {
            "region": "us-central1"
            }
        "details": {
            "quotaValue": 100,
            "resetValue": 100,
        },
        "applicableLocations": [
            "us-central1"
        ]
    },
    {
        "dimensions": {
            "gpu_familly": "NVIDIA_H100"
            }
        "details": {
            "quotaValue": 10,
        },
        "applicableLocations": [
            "us-central2",
            "us-west1",
            "us-east1"
        ]
    }
      {
        "dimensions": [],
        "details": {
            "quotaValue": 50,
            "resetValue": 50,
        },
        "applicableLocations": [
            "us-central1",
            "us-central2",
            "us-west1",
            "us-east1"
        ]
    }
]

Create a quota preference for a service specific dimension

The following example demonstrates how to create a quota for a given region and GPU family with a preferred value of 100. The target location is specified in the map of dimensions with the key region, and the target GPU family with the key gpu_family.

The following CreateQuotaPreference example specifies a GPU family of NVIDIA_H100 and a region of us-central1.

POST projects/PROJECT_NUMBER/locations/global/quotaPreferences?quotaPreferenceId=compute_googleapis_com-gpus-us-central1-NVIDIA_H100 {
    "service": "compute.googleapis.com",
    "quotaId": "GPUS-PER-GPU-FAMILY-per-project-region",
    "quotaConfig": {
        "preferredValue": 100
    },
    "dimensions": {"region": "us-central1", "gpu_family": "NVIDIA_H100"},
    "contactEmail": EMAIL"
}

Replace the following:

PROJECT_NUMBER: The unique identifier for your project.
EMAIL: An email address that can be used as a contact, in case Google Cloud needs more information to make a decision before additional quota can be granted.

Update a quota preference for a service specific dimension

The following sample code gets the current value for the dimension {"region" : "us-central1"; gpu_family:"NVIDIA_H100"}, and then sets the preferred value to double that.

// Get the current quota value for the target dimensions
Map<String, String> targetDimensions = Maps.createHashMap("region", "us-central1", "gpu_family", "NVIDIA_H100");
long currentQuotaValue = 0;
QuotaInfo quotaInfo = cloudQuotas.GetQuotaInfo(
    "projects/PROJECT_NUMBER/locations/global/services/" + serviceName + "quotaInfos/" + quotaId;
for (dimensionsInfo : quotaInfo.getDimensionsInfoList()) {
    If (targetDimensions.entrySet().containsAll(dimensionsInfo.getDimensionsMap().entrySet()) {
       currentQuotaValue = dimensionsInfo.getDetails().getValue();
       break;
    })
}

// Set the preferred quota value to double the current value for the target dimensions
QuotaPreference.Builder targetPreference = QuotaPreference.newBuilder()
        .setName(buildYourOwnQuotaPreferenceId(serviceName, quotaId, targetDimensions))
        .setService(serviceName)
        .setQuotaId(quotaId)
        .setQuotaConfig(QuotaConfig.newBuilder().setPreferredValue(currentQuotaValue * 2))
        .putAllDimensions(targetDimensions));
UpdateQuotaPreferenceRequest updateRequest = UpdateQuotaPreferenceRequest.newBuilder()
        .setQuotaPreference(targetPreference)
        .setAllowMissing(true)
        .build();
 cloudQuotas.updateQuotaPreference(updateRequest);

Replace PROJECT_NUMBER with the unique identifier for your project.

What's next

About the Cloud Quotas API
Cloud Quotas API reference
Understand quotas