Create and manage instance configurations

This page describes how to list, create, update, delete, and show the details of a Spanner instance configuration. Some custom instance configuration functionalities are not available in the Google Cloud console UI. In those cases, use the Google Cloud CLI (gcloud) commands provided.

List instance configurations

You can list all the available Spanner instance configurations with the Google Cloud CLI and client libraries. To find a list of all Spanner instance configurations, see Regional and multi-region configurations.

gcloud

Run the gcloud spanner instance-configs list command:

gcloud spanner instance-configs list

C++

To learn how to install and use the client library for Spanner, see Spanner client libraries.

void ListInstanceConfigs(
    google::cloud::spanner_admin::InstanceAdminClient client,
    std::string const& project_id) {
  int count = 0;
  auto project = google::cloud::Project(project_id);
  for (auto& config : client.ListInstanceConfigs(project.FullName())) {
    if (!config) throw std::move(config).status();
    ++count;
    std::cout << "Instance config [" << count << "]:\n"
              << config->DebugString();
  }
  if (count == 0) {
    std::cout << "No instance configs found in project " << project_id << "\n";
  }
}

C#

To learn how to install and use the client library for Spanner, see Spanner client libraries.

using Google.Api.Gax.ResourceNames;
using Google.Cloud.Spanner.Admin.Instance.V1;
using System;
using System.Collections.Generic;
using System.Linq;

public class ListInstanceConfigsSample
{
    public IEnumerable<InstanceConfig> ListInstanceConfigs(string projectId)
    {
        var instanceAdminClient = InstanceAdminClient.Create();
        var projectName = ProjectName.FromProject(projectId);
        var instanceConfigs = instanceAdminClient.ListInstanceConfigs(projectName);

        // We print the first 5 elements for demonstration purposes.
        // You can print all configs in the sequence by removing the call to Take(5).
        // The sequence will lazily fetch elements in pages as needed.
        foreach (var instanceConfig in instanceConfigs.Take(5))
        {
            Console.WriteLine($"Available leader options for instance config {instanceConfig.InstanceConfigName.InstanceConfigId}:");
            foreach (var leader in instanceConfig.LeaderOptions)
            {
                Console.WriteLine(leader);
            }

            Console.WriteLine($"Available optional replica for instance config {instanceConfig.InstanceConfigName.InstanceConfigId}:");
            foreach (var optionalReplica in instanceConfig.OptionalReplicas)
            {
                Console.WriteLine($"Replica type - {optionalReplica.Type}, default leader location - {optionalReplica.DefaultLeaderLocation}, location - {optionalReplica.Location}");
            }
        }
        return instanceConfigs;
    }
}

Go

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import (
	"context"
	"fmt"
	"io"

	instance "cloud.google.com/go/spanner/admin/instance/apiv1"
	"cloud.google.com/go/spanner/admin/instance/apiv1/instancepb"
	"google.golang.org/api/iterator"
)

// istInstanceConfigs gets available leader options for all instances
func listInstanceConfigs(w io.Writer, projectName string) error {
	// projectName = `projects/<project>
	ctx := context.Background()
	instanceAdmin, err := instance.NewInstanceAdminClient(ctx)
	if err != nil {
		return err
	}
	defer instanceAdmin.Close()

	request := &instancepb.ListInstanceConfigsRequest{
		Parent: projectName,
	}
	for {
		iter := instanceAdmin.ListInstanceConfigs(ctx, request)
		for {
			ic, err := iter.Next()
			if err == iterator.Done {
				break
			}
			if err != nil {
				return err
			}
			fmt.Fprintf(w, "Available leader options for instance config %s: %v\n", ic.Name, ic.LeaderOptions)
		}
		pageToken := iter.PageInfo().Token
		if pageToken == "" {
			break
		} else {
			request.PageToken = pageToken
		}
	}

	return nil
}

Java

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.admin.instance.v1.InstanceAdminClient;
import com.google.spanner.admin.instance.v1.InstanceConfig;
import com.google.spanner.admin.instance.v1.ProjectName;

public class ListInstanceConfigsSample {

  static void listInstanceConfigs() {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project";
    listInstanceConfigs(projectId);
  }

  static void listInstanceConfigs(String projectId) {
    try (Spanner spanner =
        SpannerOptions.newBuilder()
            .setProjectId(projectId)
            .build()
            .getService();
        InstanceAdminClient instanceAdminClient = spanner.createInstanceAdminClient()) {
      final ProjectName projectName = ProjectName.of(projectId);
      for (InstanceConfig instanceConfig :
          instanceAdminClient.listInstanceConfigs(projectName).iterateAll()) {
        System.out.printf(
            "Available leader options for instance config %s: %s%n",
            instanceConfig.getName(),
            instanceConfig.getLeaderOptionsList()
        );
      }
    }
  }
}

Note: The old client library interface code samples for Java are archived in GitHub.

Node.js

To learn how to install and use the client library for Spanner, see Spanner client libraries.

/**
 * TODO(developer): Uncomment the following line before running the sample.
 */
// const projectId = 'my-project-id';

// Imports the Google Cloud client library
const {Spanner} = require('@google-cloud/spanner');

// Creates a client
const spanner = new Spanner({
  projectId: projectId,
});

const instanceAdminClient = spanner.getInstanceAdminClient();

async function listInstanceConfigs() {
  // Lists all available instance configurations in the project.
  // See https://cloud.google.com/spanner/docs/instance-configurations#configuration for a list of all available
  // configurations.
  const [instanceConfigs] = await instanceAdminClient.listInstanceConfigs({
    parent: instanceAdminClient.projectPath(projectId),
  });
  console.log(`Available instance configs for project ${projectId}:`);
  instanceConfigs.forEach(instanceConfig => {
    console.log(
      `Available leader options for instance config ${
        instanceConfig.name
      } ('${instanceConfig.displayName}'): 
         ${instanceConfig.leaderOptions.join()}`,
    );
  });
}
listInstanceConfigs();

Note: The old client library interface code samples for Node.js are archived in GitHub.

PHP

To learn how to install and use the client library for Spanner, see Spanner client libraries.

use Google\Cloud\Spanner\Admin\Instance\V1\Client\InstanceAdminClient;
use Google\Cloud\Spanner\Admin\Instance\V1\ListInstanceConfigsRequest;

/**
 * Lists the available instance configurations.
 * Example:
 * ```
 * list_instance_configs();
 * ```
 *
 * @param string $projectId The Google Cloud project ID.
 */
function list_instance_configs(string $projectId): void
{
    $instanceAdminClient = new InstanceAdminClient();
    $projectName = InstanceAdminClient::projectName($projectId);
    $request = new ListInstanceConfigsRequest();
    $request->setParent($projectName);
    $resp = $instanceAdminClient->listInstanceConfigs($request);
    foreach ($resp as $element) {
        printf(
            'Available leader options for instance config %s: %s' . PHP_EOL,
            $element->getDisplayName(),
            implode(',', iterator_to_array($element->getLeaderOptions()))
        );
    }
}

Note: The old client library interface code samples for PHP are archived in GitHub.

Python

To learn how to install and use the client library for Spanner, see Spanner client libraries.

def list_instance_config():
    """Lists the available instance configurations."""
    from google.cloud.spanner_admin_instance_v1.types import spanner_instance_admin

    spanner_client = spanner.Client()

    request = spanner_instance_admin.ListInstanceConfigsRequest(
        parent=spanner_client.project_name
    )
    for config in spanner_client.instance_admin_api.list_instance_configs(
        request=request
    ):
        print(
            "Available leader options for instance config {}: {}".format(
                config.name, config.leader_options
            )
        )

Note: The old client library interface code samples for Python are archived in GitHub.

Ruby

To learn how to install and use the client library for Spanner, see Spanner client libraries.

# project_id  = "Your Google Cloud project ID"

require "google/cloud/spanner"
require "google/cloud/spanner/admin/instance"

instance_admin_client = Google::Cloud::Spanner::Admin::Instance.instance_admin

project_path = instance_admin_client.project_path project: project_id
configs = instance_admin_client.list_instance_configs parent: project_path

configs.each do |c|
  puts "Available leader options for instance config #{c.name} : #{c.leader_options}"
end

Show instance configuration details

You can show the details of any instance configuration with the Google Cloud CLI and client libraries. When you create a new custom instance configuration, you can add any location listed under optionalReplicas as an optional replica. If you don't see your desired read-only replica location, you can request a new optional read-only replica region.

For more information, see Create a custom instance configuration.

gcloud

Run the gcloud spanner instance-configs describe command:

gcloud spanner instance-configs describe INSTANCE-CONFIG

Provide the following value:

INSTANCE-CONFIG

The instance configuration, which defines the geographic location of the instance and affects how data is replicated. For example, eur6 or regional-us-central1.

To show the details of the eur6 base configuration, run:

gcloud spanner instance-configs describe eur6

Here's an example output for the eur6 base configuration:

  configType: GOOGLE_MANAGED
  displayName: Europe (Netherlands, Frankfurt)
  freeInstanceAvailability: UNSUPPORTED
  leaderOptions:
  - europe-west3
  - europe-west4
  name: projects/cloud-spanner-demo/instanceConfigs/eur6
  optionalReplicas:
  - displayName: South Carolina
    labels:
      cloud.googleapis.com/country: US
      cloud.googleapis.com/location: us-east1
      cloud.googleapis.com/region: us-east1
    location: us-east1
    type: READ_ONLY
  - displayName: South Carolina
    labels:
      cloud.googleapis.com/country: US
      cloud.googleapis.com/location: us-east1
      cloud.googleapis.com/region: us-east1
    location: us-east1
    type: READ_ONLY
  replicas:
  - defaultLeaderLocation: true
    location: europe-west4
    type: READ_WRITE
  - location: europe-west4
    type: READ_WRITE
  - location: europe-west3
    type: READ_WRITE
  - location: europe-west3
    type: READ_WRITE
  - location: europe-west6
    type: WITNESS

Additional usage notes:

• baseConfig (for custom configurations only) points to the base instance configuration. Refer to available regional configurations and available multi-region configurations for lists of base instance configurations that can be used to create a custom instance configuration.
• configType indicates whether this instance configuration is a base instance configuration or a custom instance configuration.
• etag (for custom configurations only) is a base64-encoded string representation of the configuration. It is used for optimistic concurrency control.

C++

To learn how to install and use the client library for Spanner, see Spanner client libraries.

void GetInstanceConfig(google::cloud::spanner_admin::InstanceAdminClient client,
                       std::string const& project_id,
                       std::string const& config_id) {
  auto project = google::cloud::Project(project_id);
  auto config = client.GetInstanceConfig(project.FullName() +
                                         "/instanceConfigs/" + config_id);
  if (!config) throw std::move(config).status();
  std::cout << "The instanceConfig " << config->name()
            << " exists and its metadata is:\n"
            << config->DebugString();
}

C#

To learn how to install and use the client library for Spanner, see Spanner client libraries.

using Google.Cloud.Spanner.Admin.Instance.V1;
using System;
using System.Threading.Tasks;

public class GetInstanceConfigAsyncSample
{
    public async Task<InstanceConfig> GetInstanceConfigAsync(string projectId, string instanceConfigId)
    {
        var instanceAdminClient = await InstanceAdminClient.CreateAsync();
        var instanceConfigName = InstanceConfigName.FromProjectInstanceConfig(projectId, instanceConfigId);
        var instanceConfig = await instanceAdminClient.GetInstanceConfigAsync(instanceConfigName);

        Console.WriteLine($"Available leader options for instance config {instanceConfigName.InstanceConfigId}:");
        foreach (var leader in instanceConfig.LeaderOptions)
        {
            Console.WriteLine(leader);
        }
        return instanceConfig;
    }
}

Go

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import (
	"context"
	"fmt"
	"io"

	instance "cloud.google.com/go/spanner/admin/instance/apiv1"
	"cloud.google.com/go/spanner/admin/instance/apiv1/instancepb"
)

// getInstanceConfig gets available leader options
func getInstanceConfig(w io.Writer, instanceConfigName string) error {
	// defaultLeader = `nam3`
	ctx := context.Background()
	instanceAdmin, err := instance.NewInstanceAdminClient(ctx)
	if err != nil {
		return err
	}
	defer instanceAdmin.Close()

	ic, err := instanceAdmin.GetInstanceConfig(ctx, &instancepb.GetInstanceConfigRequest{
		Name: instanceConfigName,
	})

	if err != nil {
		return fmt.Errorf("could not get instance config %s: %w", instanceConfigName, err)
	}

	fmt.Fprintf(w, "Available leader options for instance config %s: %v", instanceConfigName, ic.LeaderOptions)

	return nil
}

Java

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.admin.instance.v1.InstanceAdminClient;
import com.google.spanner.admin.instance.v1.InstanceConfig;
import com.google.spanner.admin.instance.v1.InstanceConfigName;

public class GetInstanceConfigSample {

  static void getInstanceConfig() {
    // TODO(developer): Replace these variables before running the sample.
    final String projectId = "my-project";
    final String instanceConfigId = "nam6";
    getInstanceConfig(projectId, instanceConfigId);
  }

  static void getInstanceConfig(String projectId, String instanceConfigId) {
    try (Spanner spanner =
        SpannerOptions.newBuilder()
            .setProjectId(projectId)
            .build()
            .getService();
        InstanceAdminClient instanceAdminClient = spanner.createInstanceAdminClient()) {
      final InstanceConfigName instanceConfigName = InstanceConfigName.of(projectId,
          instanceConfigId);

      final InstanceConfig instanceConfig =
          instanceAdminClient.getInstanceConfig(instanceConfigName.toString());

      System.out.printf(
          "Available leader options for instance config %s: %s%n",
          instanceConfig.getName(),
          instanceConfig.getLeaderOptionsList()
      );
    }
  }
}

Note: The old client library interface code samples for Java are archived in GitHub.

Node.js

To learn how to install and use the client library for Spanner, see Spanner client libraries.

/**
 * TODO(developer): Uncomment the following line before running the sample.
 */
// const projectId = 'my-project-id';

// Imports the Google Cloud client library
const {Spanner} = require('@google-cloud/spanner');

// Creates a client
const spanner = new Spanner({
  projectId: projectId,
});

const instanceAdminClient = spanner.getInstanceAdminClient();

async function getInstanceConfig() {
  // Get the instance config for the multi-region North America 6 (NAM6).
  // See https://cloud.google.com/spanner/docs/instance-configurations#configuration for a list of all available
  // configurations.
  const [instanceConfig] = await instanceAdminClient.getInstanceConfig({
    name: instanceAdminClient.instanceConfigPath(projectId, 'nam6'),
  });
  console.log(
    `Available leader options for instance config ${instanceConfig.name} ('${
      instanceConfig.displayName
    }'): 
         ${instanceConfig.leaderOptions.join()}`,
  );
}
getInstanceConfig();

Note: The old client library interface code samples for Node.js are archived in GitHub.

PHP

To learn how to install and use the client library for Spanner, see Spanner client libraries.

use Google\Cloud\Spanner\Admin\Instance\V1\Client\InstanceAdminClient;
use Google\Cloud\Spanner\Admin\Instance\V1\GetInstanceConfigRequest;

/**
 * Gets the leader options for the instance configuration.
 *
 * @param string $projectId The Google Cloud Project ID.
 * @param string $instanceConfig The name of the instance configuration.
 */
function get_instance_config(string $projectId, string $instanceConfig): void
{
    $instanceAdminClient = new InstanceAdminClient();
    $instanceConfigName = InstanceAdminClient::instanceConfigName($projectId, $instanceConfig);

    $request = (new GetInstanceConfigRequest())
        ->setName($instanceConfigName);
    $configInfo = $instanceAdminClient->getInstanceConfig($request);

    printf('Available leader options for instance config %s: %s' . PHP_EOL,
        $instanceConfig,
        implode(',', array_keys(iterator_to_array($configInfo->getLeaderOptions())))
    );
}

Note: The old client library interface code samples for PHP are archived in GitHub.

Python

To learn how to install and use the client library for Spanner, see Spanner client libraries.

def get_instance_config(instance_config):
    """Gets the leader options for the instance configuration."""
    spanner_client = spanner.Client()
    config_name = "{}/instanceConfigs/{}".format(
        spanner_client.project_name, instance_config
    )
    config = spanner_client.instance_admin_api.get_instance_config(name=config_name)
    print(
        "Available leader options for instance config {}: {}".format(
            instance_config, config.leader_options
        )
    )

Note: The old client library interface code samples for Python are archived in GitHub.

Ruby

To learn how to install and use the client library for Spanner, see Spanner client libraries.

# project_id  = "Your Google Cloud project ID"
# instance_config_id = "Spanner instance config ID"

require "google/cloud/spanner"
require "google/cloud/spanner/admin/instance"

instance_admin_client = Google::Cloud::Spanner::Admin::Instance.instance_admin

instance_config_path = instance_admin_client.instance_config_path \
  project: project_id, instance_config: instance_config_id
config = instance_admin_client.get_instance_config name: instance_config_path

puts "Available leader options for instance config #{config.name} : #{config.leader_options}"

Create a custom instance configuration

You can create a custom regional or multi-region instance configuration and add optional read-only replicas to scale reads and support low latency stale reads. Refer to available regional configurations and available multi-region configurations for lists of base instance configurations that can be used to create a custom instance configuration. You can't create a custom dual-region instance configuration. For more information about Spanner replication and replica types, see Replication.

To create a custom instance configuration, you must have the spanner.instanceConfigs.create permission. By default, roles that have the spanner.instances.create permission will also have the spanner.instanceConfigs.create permission.

Console

You can't create a custom instance configuration using the Google Cloud console. To create an instance with read-only replicas, use the gcloud CLI or client libraries.

gcloud

Use the gcloud spanner instance-configs create command:

gcloud spanner instance-configs create CUSTOM-INSTANCE-CONFIG-ID  \
 --display-name=DISPLAY-NAME \
 --base-config=BASE-CONFIG \
 --labels=KEY=VALUE,[...] \
 --replicas=location=LOCATION,type=TYPE[:...]

You can use the --clone-config flag as a convenient way to clone another base or custom instance configuration while also declaring the location and type of a specific custom replica.

  gcloud spanner instance-configs create CUSTOM-INSTANCE-CONFIG-ID  \
  --display-name=DISPLAY-NAME \
  --clone-config=INSTANCE-CONFIG \
  --labels=KEY=VALUE,[...] \
  --add-replicas=location=LOCATION,type=TYPE[:...] \
  --skip-replicas=location=LOCATION,type=TYPE[:...]

Provide the following values:

CUSTOM-INSTANCE-CONFIG-ID

A permanent identifier that is unique within your Google Cloud project. You can't change the instance configuration ID later. The custom- prefix is required to avoid name conflicts with base instance configurations.

DISPLAY-NAME

The name to display for the custom instance configuration in the Google Cloud console.

If you choose to use the flags `--base-config` and `--replicas`, provide the following values:

BASE-CONFIG

The region name of the base instance configuration on which your custom instance configuration is based. For example, eur6 or regional-us-central1.

LOCATION

The region name of the serving resources (replicas), for example, us-east1. To find out what location names are accepted, run gcloud spanner instance-configs describe INSTANCE-CONFIG and refer to the replicas and optionalReplicas lists.

TYPE

The type of replica. To find out what corresponding locations and replica types are accepted, run gcloud spanner instance-configs describe INSTANCE-CONFIG and refer to the replicas and optionalReplicas lists. The types are one of the following:

• READ_ONLY
• READ_WRITE
• WITNESS

Items in the list are separated by ":".

Unless the --[clone-config] flag is used, all replica LOCATION and TYPE must be specified when creating a custom instance configuration, including the ones predefined in the base configuration. For more information, see the gcloud instance-configs describe help-text.

If you choose to use the flags --clone-config and --add-replicas (only use --skip-replicas if there are replicas you want to skip from being cloned), provide the following values:

• --clone-config=INSTANCE-CONFIG

  Use this flag as a convenient way to clone another base or custom instance configuration while also declaring the location and type of a specific custom replica. Then use --add-replicas=location=LOCATION,type=TYPE to specify where you want to add your optional replica.

  For example, to create a custom instance configuration with two read-only replicas in us-east1 while copying all the other replica locations from the eur6 base instance configuration, run:

  gcloud spanner instance-configs create custom-eur6 --clone-config=eur6 \
  --add-replicas=location=us-east1,type=READ_ONLY:location=us-east1,type=READ_ONLY
  

• --skip-replicas=location=LOCATION,type=TYPE

  Use this flag to skip any replica from being cloned.

  For example, to create a custom instance configuration with one read-only replica in us-east4 while copying all the other replica locations from the nam3 base instance configuration except the read-only replica in us-central1, run:

  gcloud spanner instance-configs create custom-nam3 --clone-config=nam3 \
    --add-replicas=location=us-east4,type=READ_ONLY \
    --skip-replicas=location=us-central1,type=READ_ONLY
  

The following flags and values are optional:

• --labels=KEY=VALUE,[...]

  KEY and VALUE: A list of key and value pairs to add to your custom instance configuration.

  Keys must start with a lowercase character and contain only hyphens (-), underscores (_), lowercase characters, and numbers. Values must contain only hyphens (-), underscores (_), lowercase characters, and numbers.

• --validate-only

  Use this flag to validate that the request will succeed before executing it.

For example, to create a custom instance configuration with the eur6 base configuration with one additional read-only replica in us-east1, run:

gcloud spanner instance-configs create custom-eur6 \
  --display-name="Custom eur6" --clone-config=eur6 \
  --add-replicas=location=us-east1,type=READ_ONLY \

You can also create a custom instance configuration without the --clone-config flag:

gcloud spanner instance-configs create custom-eur6 \
  --display-name="Custom eur6" --base-config=eur6 \
  --replicas=location=europe-west4,type=READ_WRITE:location=europe-west3,type=READ_WRITE:location=europe-west4,type=READ_WRITE:location=europe-west3,type=READ_WRITE:location=europe-west6,type=WITNESS:location=us-east1,type=READ_ONLY

You should see the following output:

Creating instance-config...done.

C++

To learn how to install and use the client library for Spanner, see Spanner client libraries.

void CreateInstanceConfig(
    google::cloud::spanner_admin::InstanceAdminClient client,
    std::string const& project_id, std::string const& user_config_id,
    std::string const& base_config_id) {
  auto project = google::cloud::Project(project_id);
  auto base_config = client.GetInstanceConfig(
      project.FullName() + "/instanceConfigs/" + base_config_id);
  if (!base_config) throw std::move(base_config).status();
  if (base_config->optional_replicas().empty()) {
    throw std::runtime_error("No optional replicas in base config");
  }
  google::spanner::admin::instance::v1::CreateInstanceConfigRequest request;
  request.set_parent(project.FullName());
  request.set_instance_config_id(user_config_id);
  auto* request_config = request.mutable_instance_config();
  request_config->set_name(project.FullName() + "/instanceConfigs/" +
                           user_config_id);
  request_config->set_display_name("My instance config");
  // The user-managed instance config must contain all the replicas
  // of the base config plus at least one of the optional replicas.
  *request_config->mutable_replicas() = base_config->replicas();
  for (auto const& replica : base_config->optional_replicas()) {
    *request_config->add_replicas() = replica;
  }
  request_config->set_base_config(base_config->name());
  *request_config->mutable_leader_options() = base_config->leader_options();
  request.set_validate_only(false);
  auto user_config = client.CreateInstanceConfig(request).get();
  if (!user_config) throw std::move(user_config).status();
  std::cout << "Created instance config [" << user_config_id << "]:\n"
            << user_config->DebugString();
}

C#

To learn how to install and use the client library for Spanner, see Spanner client libraries.

using System;
using System.Threading.Tasks;
using Google.Api.Gax.ResourceNames;
using Google.Cloud.Spanner.Admin.Instance.V1;

public class CreateInstanceConfigAsyncSample
{
    public async Task<InstanceConfig> CreateInstanceConfigAsync(string projectId, string baseInstanceConfigId, string customInstanceConfigId)
    {
        InstanceAdminClient instanceAdminClient = await InstanceAdminClient.CreateAsync();
        var instanceConfigName = new InstanceConfigName(projectId, baseInstanceConfigId);
        var instanceConfig = await instanceAdminClient.GetInstanceConfigAsync(instanceConfigName);

        var customInstanceConfigName = new InstanceConfigName(projectId, customInstanceConfigId);

        //Create a custom config.
        InstanceConfig userInstanceConfig = new InstanceConfig
        {
            DisplayName = "C# test custom instance config",
            ConfigType = InstanceConfig.Types.Type.UserManaged,
            BaseConfigAsInstanceConfigName = instanceConfigName,
            InstanceConfigName = customInstanceConfigName,
            //The replicas for the custom instance configuration must include all the replicas of the base
            //configuration, in addition to at least one from the list of optional replicas of the base
            //configuration.
            Replicas = { instanceConfig.Replicas },
            OptionalReplicas =
            {
                new ReplicaInfo
                {
                    Type = ReplicaInfo.Types.ReplicaType.ReadOnly,
                    Location = "us-east1",
                    DefaultLeaderLocation = false
                },
                //The replicas for the custom instance configuration must include all the replicas of the base
                //configuration, in addition to at least one from the list of optional replicas of the base
                //configuration.
                instanceConfig.OptionalReplicas
            }
        };

        var operationResult = await instanceAdminClient.CreateInstanceConfigAsync(new CreateInstanceConfigRequest
        {
            ParentAsProjectName = ProjectName.FromProject(projectId),
            InstanceConfig = userInstanceConfig,
            InstanceConfigId = customInstanceConfigId
        });

        var pollResult = await operationResult.PollUntilCompletedAsync();

        if (pollResult.IsFaulted)
        {
            throw pollResult.Exception;
        }

        Console.WriteLine($"Instance config created successfully");
        Console.WriteLine($"Available custom replication options for instance config {pollResult.Result.Name}\r\n{pollResult.Result.OptionalReplicas}");

        return pollResult.Result;
    }
}

Go

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import (
	"context"
	"fmt"
	"io"
	"time"

	instance "cloud.google.com/go/spanner/admin/instance/apiv1"
	"cloud.google.com/go/spanner/admin/instance/apiv1/instancepb"
)

// createInstanceConfig creates a custom spanner instance config
func createInstanceConfig(w io.Writer, projectID, userConfigID, baseConfigID string) error {
	// projectID := "my-project-id"
	// userConfigID := "custom-config", custom config names must start with the prefix “custom-”.
	// baseConfigID := "my-base-config"

	// Add timeout to context.
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
	defer cancel()

	adminClient, err := instance.NewInstanceAdminClient(ctx)
	if err != nil {
		return err
	}
	defer admiadminClient.ClosebaseConfig, err := adminClient.GetInstanceConfig(ctx, &instancepb.GetInstanceConfigRequest{
		Name: fmt.Sprintf("projects/%s/instanceConfigs/%s", projectID, baseConfigID),
	})
	if err != nil {
		return fmt.Errorf("createInstanceConfig.GetInstanceConfig: %w", err)
	}
	if baseConfig.OptionalReplicas == nil || len(baseConfig.OptionalReplicas) == 0 {
		return fmt.Errorf("CreateInstanceConfig expects base config with at least from the list of optional replicas")
	}
	op, err := adminClient.CreateInstanceConfig(ctx, &instancepb.CreateInstanceConfigRequest{
		Parent: fmt.Sprintf("projects/%s", projectID),
		// Custom config names must start with the prefix “custom-”.
		InstanceConfigId: userConfigID,
		InstanceConfig: &instancepb.InstanceConfig{
			Name:        fmt.Sprintf("projects/%s/instanceConfigs/%s", projectID, userConfigID),
			DisplayName: "custom-golang-samples",
			ConfigType:  instanceinstancepb.InstanceConfig_USER_MANAGEDThe replicas for the custom instance configuration must include all the replicas of the base
			// configuration, in addition to at least one from the list of optional replicas of the base
			// configuration.
			Replicas:   append(baseConfig.Replicas, baseConfig.OptionalReplicas...),
			BaseConfig: baseConfig.Name,
			Labels:     map[string]string{"go_cloud_spanner_samples": "true"},
		},
	})
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "Waiting for create operation on projects/%s/instanceConfigs/%s to complete...\n", projectID, userConfigID)
	// Wait for the instance configuration creation to finish.
	i, err := op.Wait(ctx)
	if err != nil {
		return fmt.Errorf("Waiting for instance config creation to finish failed: %w", err)
	}
	// The instance configuration may not be ready to serve yet.
	if i.State != instanceinstancepb.InstanceConfig_READY.Fprintf(w, "InstanceConfig state is not READY yet. Got state %v\n", i.State)
	}
	fmt.Fprintf(w, "Created instance configuration [%s]\n", userConfigID)
	return nil
}

Java

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.admin.instance.v1.InstanceAdminClient;
import com.google.spanner.admin.instance.v1.CreateInstanceConfigRequest;
import com.google.spanner.admin.instance.v1.InstanceConfig;
import com.google.spanner.admin.instance.v1.InstanceConfigName;
import com.google.spanner.admin.instance.v1.ProjectName;
import com.google.spanner.admin.instance.v1.ReplicaInfo;
import java.util.List;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import java.util.stream.Collectors;
import java.util.stream.Stream;

class CreateInstanceConfigSample {

  static void createInstanceConfig() {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project";
    String baseInstanceConfigId = "nam11";
    String instanceConfigId = "custom-instance-config4";

    createInstanceConfig(projectId, baseInstanceConfigId, instanceConfigId);
  }

  static void createInstanceConfig(
      String projectId, String baseInstanceConfigId, String instanceConfigId) {
    try (Spanner spanner =
        SpannerOptions.newBuilder()
            .setProjectId(projectId)
            .build()
            .getService();
        InstanceAdminClient instanceAdminClient = spanner.createInstanceAdminClient()) {
      final InstanceConfigName baseInstanceConfigName = InstanceConfigName.of(projectId,
          baseInstanceConfigId);
      final InstanceConfig baseConfig =
          instanceAdminClient.getInstanceConfig(baseInstanceConfigName.toString());
      final InstanceConfigName instanceConfigName = InstanceConfigName.of(projectId,
          instanceConfigId);
      /**
       * The replicas for the custom instance configuration must include all the replicas of the
       * base configuration, in addition to at least one from the list of optional replicas of the
       * base configuration.
       */
      final List<ReplicaInfo> replicas =
          Stream.concat(baseConfig.getReplicasList().stream(),
              baseConfig.getOptionalReplicasList().stream().limit(1)).collect(Collectors.toList());
      final InstanceConfig instanceConfig =
          InstanceConfig.newBuilder().setName(instanceConfigName.toString())
              .setBaseConfig(baseInstanceConfigName.toString())
              .setDisplayName("Instance Configuration").addAllReplicas(replicas).build();
      final CreateInstanceConfigRequest createInstanceConfigRequest =
          CreateInstanceConfigRequest.newBuilder().setParent(ProjectName.of(projectId).toString())
              .setInstanceConfigId(instanceConfigId).setInstanceConfig(instanceConfig).build();
      try {
        System.out.printf("Waiting for create operation for %s to complete...\n",
            instanceConfigName);
        InstanceConfig instanceConfigResult =
            instanceAdminClient.createInstanceConfigAsync(
                createInstanceConfigRequest).get(5, TimeUnit.MINUTES);
        System.out.printf("Created instance configuration %s\n", instanceConfigResult.getName());
      } catch (ExecutionException | TimeoutException e) {
        System.out.printf(
            "Error: Creating instance configuration %s failed with error message %s\n",
            instanceConfig.getName(), e.getMessage());
      } catch (InterruptedException e) {
        System.out.println(
            "Error: Waiting for createInstanceConfig operation to finish was interrupted");
      }
    }
  }
}

Note: The old client library interface code samples for Java are archived in GitHub.

Node.js

To learn how to install and use the client library for Spanner, see Spanner client libraries.

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const instanceConfigId = 'custom-my-instance-config-id'
// const baseInstanceConfigId = 'my-base-instance-config-id';
// const projectId = 'my-project-id';

// Imports the Google Cloud client library
const {Spanner} = require('@google-cloud/spanner');

// Creates a client
const spanner = new Spanner({
  projectId: projectId,
});

const instanceAdminClient = spanner.getInstanceAdminClient();

// Creates a new instance config
async function createInstanceConfig() {
  const [baseInstanceConfig] = await instanceAdminClient.getInstanceConfig({
    name: instanceAdminClient.instanceConfigPath(
      projectId,
      baseInstanceConfigId,
    ),
  });
  try {
    console.log(
      `Creating instance config ${instanceAdminClient.instanceConfigPath(
        projectId,
        instanceConfigId,
      )}.`,
    );
    const [operation] = await instanceAdminClient.createInstanceConfig({
      instanceConfigId: instanceConfigId,
      parent: instanceAdminClient.projectPath(projectId),
      instanceConfig: {
        name: instanceAdminClient.instanceConfigPath(
          projectId,
          instanceConfigId,
        ),
        baseConfig: instanceAdminClient.instanceConfigPath(
          projectId,
          baseInstanceConfigId,
        ),
        displayName: instanceConfigId,
        replicas: baseInstanceConfig.replicas.concat(
          baseInstanceConfig.optionalReplicas[0],
        ),
      },
    });
    console.log(
      `Waiting for create operation for ${instanceConfigId} to complete...`,
    );
    await operation.promise();
    console.log(`Created instance config ${instanceConfigId}.`);
  } catch (err) {
    console.error(
      'ERROR: Creating instance config ',
      instanceConfigId,
      ' failed with error message ',
      err,
    );
  }
}
createInstanceConfig();

Note: The old client library interface code samples for Node.js are archived in GitHub.

PHP

To learn how to install and use the client library for Spanner, see Spanner client libraries.

use Google\Cloud\Spanner\Admin\Instance\V1\CreateInstanceConfigRequest;
use Google\Cloud\Spanner\Admin\Instance\V1\GetInstanceConfigRequest;
use Google\Cloud\Spanner\Admin\Instance\V1\InstanceConfig;
use Google\Cloud\Spanner\Admin\Instance\V1\Client\InstanceAdminClient;
use Google\Cloud\Spanner\Admin\Instance\V1\ReplicaInfo;

/**
 * Creates a customer managed instance configuration.
 * Example:
 * ```
 * create_instance_config($instanceConfigId);
 * ```
 *
 * @param string $projectId The Google Cloud Project ID.
 * @param string $instanceConfigId The customer managed instance configuration id. The id must start with 'custom-'.
 * @param string $baseConfigId Base configuration ID to be used for creation, e.g. nam11.
 */
function create_instance_config(string $projectId, string $instanceConfigId, string $baseConfigId): void
{
    $instanceAdminClient = new InstanceAdminClient();
    $projectName = InstanceAdminClient::projectName($projectId);
    $instanceConfigName = $instanceAdminClient->instanceConfigName(
        $projectId,
        $instanceConfigId
    );

    // Get a Google Managed instance configuration to use as the base for our custom instance configuration.
    $baseInstanceConfig = $instanceAdminClient->instanceConfigName(
        $projectId,
        $baseConfigId
    );

    $request = new GetInstanceConfigRequest(['name' => $baseInstanceConfig]);
    $baseInstanceConfigInfo = $instanceAdminClient->getInstanceConfig($request);

    $instanceConfig = (new InstanceConfig())
        ->setBaseConfig($baseInstanceConfig)
        ->setName($instanceConfigName)
        ->setDisplayName('My custom instance configuration')
        ->setLabels(['php-cloud-spanner-samples' => true])
        ->setReplicas(array_merge(
            iterator_to_array($baseInstanceConfigInfo->getReplicas()),
            [new ReplicaInfo([
            'location' => 'us-east1',
            'type' => ReplicaInfo\ReplicaType::READ_ONLY,
            'default_leader_location' => false
            ])]
        ));

    $request = new CreateInstanceConfigRequest([
        'parent' => $projectName,
        'instance_config' => $instanceConfig,
        'instance_config_id' => $instanceConfigId
    ]);
    $operation = $instanceAdminClient->createInstanceConfig($request);

    print('Waiting for operation to complete...' . PHP_EOL);
    $operation->pollUntilComplete();

    printf('Created instance configuration %s' . PHP_EOL, $instanceConfigId);
}

Note: The old client library interface code samples for PHP are archived in GitHub.

Python

To learn how to install and use the client library for Spanner, see Spanner client libraries.

def create_instance_config(user_config_name, base_config_id):
    """Creates the new user-managed instance configuration using base instance config."""

    # user_config_name = `custom-nam11`
    # base_config_id = `projects/<project>/instanceConfigs/nam11`
    spanner_client = spanner.Client()
    base_config = spanner_client.instance_admin_api.get_instance_config(
        name=base_config_id
    )

    # The replicas for the custom instance configuration must include all the replicas of the base
    # configuration, in addition to at least one from the list of optional replicas of the base
    # configuration.
    replicas = []
    for replica in base_config.replicas:
        replicas.append(replica)
    replicas.append(base_config.optional_replicas[0])
    operation = spanner_client.instance_admin_api.create_instance_config(
        parent=spanner_client.project_name,
        instance_config_id=user_config_name,
        instance_config=spanner_instance_admin.InstanceConfig(
            name="{}/instanceConfigs/{}".format(
                spanner_client.project_name, user_config_name
            ),
            display_name="custom-python-samples",
            config_type=spanner_instance_admin.InstanceConfig.Type.USER_MANAGED,
            replicas=replicas,
            base_config=base_config.name,
            labels={"python_cloud_spanner_samples": "true"},
        ),
    )
    print("Waiting for operation to complete...")
    operation.result(OPERATION_TIMEOUT_SECONDS)

    print("Created instance configuration {}".format(user_config_name))

Note: The old client library interface code samples for Python are archived in GitHub.

Ruby

To learn how to install and use the client library for Spanner, see Spanner client libraries.

require "google/cloud/spanner"
require "google/cloud/spanner/admin/instance"

def spanner_create_instance_config project_id:, user_config_name:, base_config_id:
  # project_id  = "Your Google Cloud project ID"
  # user_config_name = "Your custom instance configuration name, The name must start with 'custom-'"
  # base_config_id = "Base configuration ID to be used for creation, e.g projects/<project>/instanceConfigs/nam11"

  instance_admin_client = Google::Cloud::Spanner::Admin::Instance.instance_admin
  project_path = instance_admin_client.project_path project: project_id
  base_instance_config = instance_admin_client.get_instance_config name: base_config_id
  # The replicas for the custom instance configuration must include all the replicas of the base
  # configuration, in addition to at least one from the list of optional replicas of the base
  # configuration.
  custom_replicas = []
  base_instance_config.replicas.each do |replica|
    custom_replicas << replica
  end
  custom_replicas << base_instance_config.optional_replicas[0]
  custom_instance_config_id = instance_admin_client.instance_config_path \
    project: project_id, instance_config: user_config_name
  custom_instance_config = {
    name: custom_instance_config_id,
    display_name: "custom-ruby-samples",
    config_type: :USER_MANAGED,
    replicas: custom_replicas,
    base_config: base_config_id,
    labels: { ruby_cloud_spanner_samples: "true" }
  }
  request = {
    parent: project_path,
    # Custom config names must start with the prefix “custom-”.
    instance_config_id: user_config_name,
    instance_config: custom_instance_config
  }
  job = instance_admin_client.create_instance_config request

  puts "Waiting for create instance config operation to complete"

  job.wait_until_done!

  if job.error?
    puts job.error
  else
    puts "Created instance configuration #{user_config_name}"
  end
end

Create an instance in a custom instance configuration

You can create an instance in a custom instance configuration.

Console

To create an instance in a custom instance configuration, use the gcloud CLI or client libraries.

gcloud

After you create the custom instance configuration, follow the instructions provided in Create an instance.

C++

After you create the custom instance configuration, follow the instructions provided in Create an instance.

C#

After you create the custom instance configuration, follow the instructions provided in Create an instance.

Go

After you create the custom instance configuration, follow the instructions provided in Create an instance.

Java

After you create the custom instance configuration, follow the instructions provided in Create an instance.

Node.js

After you create the custom instance configuration, follow the instructions provided in Create an instance.

PHP

After you create the custom instance configuration, follow the instructions provided in Create an instance.

Python

After you create the custom instance configuration, follow the instructions provided in Create an instance.

Ruby

After you create the custom instance configuration, follow the instructions provided in Create an instance.

Update a custom instance configuration

You can change the display name and labels of a custom instance configuration.

You cannot change or update the replicas of your custom instance configuration. However, you can create a new custom instance configuration with additional replicas, then move your instance to the new custom instance configuration with your chosen additional replicas. For example, if your instance is in regional-us-central1 and you want to add a read-only replica us-west1, then you need to create a new custom instance configuration with regional-us-central1 as the base configuration and add us-west1 as a read-only replica. Then move your instance to this new custom instance configuration.

gcloud

Use the gcloud spanner instance-configs update command:

gcloud spanner instance-configs update CUSTOM-INSTANCE-CONFIG-ID \
  --display-name=NEW-DISPLAY-NAME \
  --update-labels=KEY=VALUE,[...], \
  --etag=ETAG

Provide the following values:

CUSTOM-INSTANCE-CONFIG-ID

A permanent identifier of your custom instance configuration. It will start with custom-.

NEW-DISPLAY-NAME

The new name to display for the instance configuration in the Google Cloud console.

KEY and VALUE

A list of key and value pairs to update.

Keys must start with a lowercase character and contain only hyphens (-), underscores (_), lowercase characters, and numbers. Values must contain only hyphens (-), underscores (_), lowercase characters, and numbers.

The following flags and values are optional:

• --etag=ETAG: The ETAG argument can be used to select and skip simultaneous updates in a read-modify-write scenario.
• --validate-only: Use this flag to validate that the request will succeed before executing it.

For example:

gcloud spanner instance-configs update custom-eur6 \
  --display-name="Customer managed europe replicas"

C++

To learn how to install and use the client library for Spanner, see Spanner client libraries.

void UpdateInstanceConfig(
    google::cloud::spanner_admin::InstanceAdminClient client,
    std::string const& project_id, std::string const& config_id) {
  auto project = google::cloud::Project(project_id);
  auto config = client.GetInstanceConfig(project.FullName() +
                                         "/instanceConfigs/" + config_id);
  if (!config) throw std::move(config).status();
  google::spanner::admin::instance::v1::UpdateInstanceConfigRequest request;
  auto* request_config = request.mutable_instance_config();
  request_config->set_name(config->name());
  request_config->mutable_labels()->insert({"key", "value"});
  request.mutable_update_mask()->add_paths("labels");
  request_config->set_etag(config->etag());
  request.set_validate_only(false);
  auto updated_config = client.UpdateInstanceConfig(request).get();
  if (!updated_config) throw std::move(updated_config).status();
  std::cout << "Updated instance config [" << config_id << "]:\n"
            << updated_config->DebugString();
}

C#

To learn how to install and use the client library for Spanner, see Spanner client libraries.

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Google.Cloud.Spanner.Admin.Instance.V1;
using Google.LongRunning;
using Google.Protobuf.WellKnownTypes;

public class UpdateInstanceConfigAsyncSample
{
    public async Task<Operation<InstanceConfig, UpdateInstanceConfigMetadata>> UpdateInstanceConfigAsync(string projectId, string instanceConfigId)
    {
        InstanceAdminClient instanceAdminClient = await InstanceAdminClient.CreateAsync();
        var instanceConfigName = new InstanceConfigName(projectId, instanceConfigId);

        var instanceConfig = new InstanceConfig();
        instanceConfig.InstanceConfigName  = instanceConfigName;

        instanceConfig.DisplayName = "New display name";
        instanceConfig.Labels.Add(new Dictionary<string, string>
        {
            {"cloud_spanner_samples","true"},
            {"updated","true"},
        });

        var updateInstanceConfigOperation = await instanceAdminClient.UpdateInstanceConfigAsync(new UpdateInstanceConfigRequest
        {
            InstanceConfig = instanceConfig,
            UpdateMask = new FieldMask
            {
                Paths = { "display_name", "labels" }
            }
        });

        updateInstanceConfigOperation = await updateInstanceConfigOperation.PollUntilCompletedAsync(); 

        if (updateInstanceConfigOperation.IsFaulted)
        {
            throw updateInstanceConfigOperation.Exception;
        }

        Console.WriteLine("Update Instance Config operation completed successfully.");
        return updateInstanceConfigOperation;
    }
}

Go

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import (
	"context"
	"fmt"
	"io"
	"time"

	instance "cloud.google.com/go/spanner/admin/instance/apiv1"
	"cloud.google.com/go/spanner/admin/instance/apiv1/instancepb"
	"google.golang.org/genproto/protobuf/field_mask"
)

// updateInstanceConfig updates the custom spanner instance config
func updateInstanceConfig(w io.Writer, projectID, userConfigID string) error {
	// projectID := "my-project-id"
	// userConfigID := "custom-config", custom config names must start with the prefix “custom-”.

	// Add timeout to context.
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
	defer cancel()

	adminClient, err := instance.NewInstanceAdminClient(ctx)
	if err != nil {
		return err
	}
	defer admiadminClient.Closeconfig, err := adminClient.GetInstanceConfig(ctx, &instancepb.GetInstanceConfigRequest{
		Name: fmt.Sprintf("projects/%s/instanceConfigs/%s", projectID, userConfigID),
	})
	if err != nil {
		return fmt.Errorf("updateInstanceConfig.GetInstanceConfig: %w", err)
	}
	config.DisplayName = "updated custom instance config"
	config.Labels["updated"] = "true"
	op, err := adminClient.UpdateInstanceConfig(ctx, &instancepb.UpdateInstanceConfigRequest{
		InstanceConfig: config,
		UpdateMask: &field_mask.FieldMask{
			Paths: []string{"display_name", "labels"},
		},
		ValidateOnly: false,
	})
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "Waiting for update operation on %s to complete...\n", userConfigID)
	// Wait for the instance configuration creation to finish.
	i, err := op.Wait(ctx)
	if err != nil {
		return fmt.Errorf("Waiting for instance config creation to finish failed: %w", err)
	}
	// The instance configuration may not be ready to serve yet.
	if i.State != instinstancepb.InstanceConfig_READY	fmt.Fprintf(w, "InstanceConfig state is not READY yet. Got state %v\n", i.State)
	}
	fmt.Fprintf(w, "Updated instance configuration [%s]\n", config.Name)
	return nil
}

Java

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.admin.instance.v1.InstanceAdminClient;
import com.google.common.collect.ImmutableList;
import com.google.protobuf.FieldMask;
import com.google.spanner.admin.instance.v1.InstanceConfig;
import com.google.spanner.admin.instance.v1.InstanceConfigName;
import com.google.spanner.admin.instance.v1.UpdateInstanceConfigRequest;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

class UpdateInstanceConfigSample {

  static void updateInstanceConfig() {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project";
    String instanceConfigId = "custom-instance-config";
    updateInstanceConfig(projectId, instanceConfigId);
  }

  static void updateInstanceConfig(String projectId, String instanceConfigId) {
    try (Spanner spanner =
        SpannerOptions.newBuilder()
            .setProjectId(projectId)
            .build()
            .getService();
        InstanceAdminClient instanceAdminClient = spanner.createInstanceAdminClient()) {
      final InstanceConfigName instanceConfigName =
          InstanceConfigName.of(projectId, instanceConfigId);
      final InstanceConfig instanceConfig =
          InstanceConfig.newBuilder()
              .setName(instanceConfigName.toString())
              .setDisplayName("updated custom instance config")
              .putLabels("updated", "true").build();
      /**
       * The field mask must always be specified; this prevents any future
       * fields in [InstanceConfig][google.spanner.admin.instance.v1.InstanceConfig]
       * from being erased accidentally by clients that do not know about them.
       */
      final UpdateInstanceConfigRequest updateInstanceConfigRequest =
          UpdateInstanceConfigRequest.newBuilder()
              .setInstanceConfig(instanceConfig)
              .setUpdateMask(
                  FieldMask.newBuilder().addAllPaths(ImmutableList.of("display_name", "labels"))
                      .build()).build();
      try {
        System.out.printf("Waiting for update operation on %s to complete...\n",
            instanceConfigName);
        InstanceConfig instanceConfigResult =
            instanceAdminClient.updateInstanceConfigAsync(
                updateInstanceConfigRequest).get(5, TimeUnit.MINUTES);
        System.out.printf(
            "Updated instance configuration %s with new display name %s\n",
            instanceConfigResult.getName(), instanceConfig.getDisplayName());
      } catch (ExecutionException | TimeoutException e) {
        System.out.printf(
            "Error: Updating instance config %s failed with error message %s\n",
            instanceConfig.getName(), e.getMessage());
        e.printStackTrace();
      } catch (InterruptedException e) {
        System.out.println(
            "Error: Waiting for updateInstanceConfig operation to finish was interrupted");
      }
    }
  }
}

Note: The old client library interface code samples for Java are archived in GitHub.

Node.js

To learn how to install and use the client library for Spanner, see Spanner client libraries.

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const instanceConfigId = 'custom-my-instance-config-id';
// const projectId = 'my-project-id';

// Imports the Google Cloud client library
const {Spanner, protos} = require('@google-cloud/spanner');

// Creates a client
const spanner = new Spanner({
  projectId: projectId,
});

const instanceAdminClient = spanner.getInstanceAdminClient();

async function updateInstanceConfig() {
  // Updates an instance config
  try {
    console.log(
      `Updating instance config ${instanceAdminClient.instanceConfigPath(
        projectId,
        instanceConfigId,
      )}.`,
    );
    const [operation] = await instanceAdminClient.updateInstanceConfig({
      instanceConfig: {
        name: instanceAdminClient.instanceConfigPath(
          projectId,
          instanceConfigId,
        ),
        displayName: 'updated custom instance config',
        labels: {
          updated: 'true',
          created: Math.round(Date.now() / 1000).toString(), // current time
        },
      },
      // Field mask specifying fields that should get updated in InstanceConfig
      // Only display_name and labels can be updated
      updateMask: (protos.google.protobuf.FieldMask = {
        paths: ['display_name', 'labels'],
      }),
    });
    console.log(
      `Waiting for update operation for ${instanceConfigId} to complete...`,
    );
    await operation.promise();
    console.log(`Updated instance config ${instanceConfigId}.`);
  } catch (err) {
    console.error(
      'ERROR: Updating instance config ',
      instanceConfigId,
      ' failed with error message ',
      err,
    );
  }
}
updateInstanceConfig();

Note: The old client library interface code samples for Node.js are archived in GitHub.

PHP

To learn how to install and use the client library for Spanner, see Spanner client libraries.

use Google\Cloud\Spanner\Admin\Instance\V1\Client\InstanceAdminClient;
use Google\Cloud\Spanner\Admin\Instance\V1\InstanceConfig;
use Google\Cloud\Spanner\Admin\Instance\V1\UpdateInstanceConfigRequest;
use Google\Protobuf\FieldMask;

/**
 * Updates a customer managed instance configuration.
 * Example:
 * ```
 * update_instance_config($instanceConfigId);
 * ```
 *
 * @param string $projectId The Google Cloud project ID.
 * @param string $instanceConfigId The customer managed instance configuration id. The id must start with 'custom-'.
 */
function update_instance_config(string $projectId, string $instanceConfigId): void
{
    $instanceAdminClient = new InstanceAdminClient();

    $instanceConfigPath = $instanceAdminClient->instanceConfigName($projectId, $instanceConfigId);
    $displayName = 'New display name';

    $instanceConfig = new InstanceConfig();
    $instanceConfig->setName($instanceConfigPath);
    $instanceConfig->setDisplayName($displayName);
    $instanceConfig->setLabels(['cloud_spanner_samples' => true, 'updated' => true]);

    $fieldMask = new FieldMask();
    $fieldMask->setPaths(['display_name', 'labels']);

    $updateInstanceConfigRequest = (new UpdateInstanceConfigRequest())
        ->setInstanceConfig($instanceConfig)
        ->setUpdateMask($fieldMask);

    $operation = $instanceAdminClient->updateInstanceConfig($updateInstanceConfigRequest);

    print('Waiting for operation to complete...' . PHP_EOL);
    $operation->pollUntilComplete();

    printf('Updated instance configuration %s' . PHP_EOL, $instanceConfigId);
}

Note: The old client library interface code samples for PHP are archived in GitHub.

Python

To learn how to install and use the client library for Spanner, see Spanner client libraries.

def update_instance_config(user_config_name):
    """Updates the user-managed instance configuration."""

    # user_config_name = `custom-nam11`
    spanner_client = spanner.Client()
    config = spanner_client.instance_admin_api.get_instance_config(
        name="{}/instanceConfigs/{}".format(
            spanner_client.project_name, user_config_name
        )
    )
    config.display_name = "updated custom instance config"
    config.labels["updated"] = "true"
    operation = spanner_client.instance_admin_api.update_instance_config(
        instance_config=config,
        update_mask=field_mask_pb2.FieldMask(paths=["display_name", "labels"]),
    )
    print("Waiting for operation to complete...")
    operation.result(OPERATION_TIMEOUT_SECONDS)
    print("Updated instance configuration {}".format(user_config_name))

Note: The old client library interface code samples for Python are archived in GitHub.

Ruby

To learn how to install and use the client library for Spanner, see Spanner client libraries.

require "google/cloud/spanner"
require "google/cloud/spanner/admin/instance"

def spanner_update_instance_config user_config_id:
  # user_config_id = "The customer managed instance configuration ID, e.g projects/<project>/instanceConfigs/custom-nam11"

  instance_admin_client = Google::Cloud::Spanner::Admin::Instance.instance_admin
  config = instance_admin_client.get_instance_config name: user_config_id
  config.display_name = "updated custom instance config"
  config.labels["updated"] = "true"
  request = {
    instance_config: config,
    update_mask: { paths: ["display_name", "labels"] },
    validate_only: false
  }
  job = instance_admin_client.update_instance_config request

  puts "Waiting for update instance config operation to complete"

  job.wait_until_done!

  if job.error?
    puts job.error
  else
    puts "Updated instance configuration #{config.name}"
  end
end

Delete a custom instance configuration

Note: Deleting an instance configuration permanently removes the instance configuration. You can't delete a custom instance configuration which is used by an instance. To delete an instance, see Delete an instance.

To delete a custom instance configuration, first delete any instance in the instance configuration.

gcloud

Use the gcloud spanner instance-configs delete command, replacing CUSTOM-INSTANCE-CONFIG-ID with the custom instance configuration ID:

gcloud spanner instance-configs delete CUSTOM-INSTANCE-CONFIG-ID

C++

To learn how to install and use the client library for Spanner, see Spanner client libraries.

void DeleteInstanceConfig(
    google::cloud::spanner_admin::InstanceAdminClient client,
    std::string const& project_id, std::string const& config_id) {
  auto project = google::cloud::Project(project_id);
  auto config_name = project.FullName() + "/instanceConfigs/" + config_id;
  auto status = client.DeleteInstanceConfig(config_name);
  if (!status.ok()) throw std::move(status);
  std::cout << "Instance config " << config_name << " successfully deleted\n";
}

C#

To learn how to install and use the client library for Spanner, see Spanner client libraries.

using System;
using System.Threading.Tasks;
using Google.Cloud.Spanner.Admin.Instance.V1;
using Grpc.Core;

public class DeleteInstanceConfigAsyncSample
{

    public async Task DeleteInstanceConfigAsync(string projectId, string instanceConfigId)
    {
        InstanceAdminClient instanceAdminClient = await InstanceAdminClient.CreateAsync();
        var instanceConfigName = new InstanceConfigName(projectId, instanceConfigId);

        try
        {
            await instanceAdminClient.DeleteInstanceConfigAsync(new DeleteInstanceConfigRequest
            {
                InstanceConfigName = instanceConfigName
            });
        }
        catch (RpcException ex) when (ex.Status.StatusCode == StatusCode.NotFound)
        {
            Console.WriteLine("The specified instance config does not exist. It cannot be deleted.");
            return;
        }

        Console.WriteLine("Delete Instance Config operation is completed");
    }
}

Go

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import (
	"context"
	"fmt"
	"io"

	instance "cloud.google.com/go/spanner/admin/instance/apiv1"
	"cloud.google.com/go/spanner/admin/instance/apiv1/instancepb"
)

// deleteInstanceConfig deletes the custom spanner instance config
func deleteInstanceConfig(w io.Writer, projectID, userConfigID string) error {
	// projectID := "my-project-id"
	// userConfigID := "custom-config", custom config names must start with the prefix “custom-”.

	ctx := context.Background()
	adminClient, err := instance.NewInstanceAdminClient(ctx)
	if err != nil {
		return err
	}
	defer admiadminClient.Closeerr = adminClient.DeleteInstanceConfig(ctx, &instancepb.DeleteInstanceConfigRequest{
		Name: fmt.Sprintf("projects/%s/instanceConfigs/%s", projectID, userConfigID),
	})
	if err != nil {
		return err
	}
	fmt.Fprintf(w, "Deleted instance configuration [%s]\n", userConfigID)
	return nil
}

Java

To learn how to install and use the client library for Spanner, see Spanner client libraries.

import com.google.cloud.spanner.Spanner;
import com.google.cloud.spanner.SpannerException;
import com.google.cloud.spanner.SpannerOptions;
import com.google.cloud.spanner.admin.instance.v1.InstanceAdminClient;
import com.google.spanner.admin.instance.v1.DeleteInstanceConfigRequest;
import com.google.spanner.admin.instance.v1.InstanceConfigName;

class DeleteInstanceConfigSample {

  static void deleteInstanceConfig() {
    // TODO(developer): Replace these variables before running the sample.
    String projectId = "my-project";
    String instanceConfigId = "custom-user-config";
    deleteInstanceConfig(projectId, instanceConfigId);
  }

  static void deleteInstanceConfig(String projectId, String instanceConfigId) {
    try (Spanner spanner =
        SpannerOptions.newBuilder()
            .setProjectId(projectId)
            .build()
            .getService();
        InstanceAdminClient instanceAdminClient = spanner.createInstanceAdminClient()) {
      final InstanceConfigName instanceConfigName = InstanceConfigName.of(projectId,
          instanceConfigId);
      final DeleteInstanceConfigRequest request =
          DeleteInstanceConfigRequest.newBuilder().setName(instanceConfigName.toString()).build();

      try {
        System.out.printf("Deleting %s...\n", instanceConfigName);
        instanceAdminClient.deleteInstanceConfig(request);
        System.out.printf("Deleted instance configuration %s\n", instanceConfigName);
      } catch (SpannerException e) {
        System.out.printf(
            "Error: Deleting instance configuration %s failed with error message: %s\n",
            instanceConfigName, e.getMessage());
      }
    }
  }
}

Note: The old client library interface code samples for Java are archived in GitHub.

Node.js

To learn how to install and use the client library for Spanner, see Spanner client libraries.

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const instanceConfigId = 'custom-my-instance-config-id';
// const projectId = 'my-project-id';

// Imports the Google Cloud client library
const {Spanner} = require('@google-cloud/spanner');

// Creates a client
const spanner = new Spanner({
  projectId: projectId,
});

const instanceAdminClient = spanner.getInstanceAdminClient();

async function deleteInstanceConfig() {
  // Deletes an instance config.

  try {
    // Delete the instance config.
    console.log(`Deleting ${instanceConfigId}...\n`);
    await instanceAdminClient.deleteInstanceConfig({
      name: instanceAdminClient.instanceConfigPath(
        projectId,
        instanceConfigId,
      ),
    });
    console.log(`Deleted instance config ${instanceConfigId}.\n`);
  } catch (err) {
    console.error(
      'ERROR: Deleting instance config ',
      instanceConfigId,
      ' failed with error message ',
      err,
    );
  }
}
deleteInstanceConfig();

Note: The old client library interface code samples for Node.js are archived in GitHub.

PHP

To learn how to install and use the client library for Spanner, see Spanner client libraries.

use Google\Cloud\Spanner\Admin\Instance\V1\Client\InstanceAdminClient;
use Google\Cloud\Spanner\Admin\Instance\V1\DeleteInstanceConfigRequest;

/**
 * Deletes a customer managed instance configuration.
 * Example:
 * ```
 * delete_instance_config($instanceConfigId);
 * ```
 *
 * @param string $projectId The Google Cloud Project ID.
 * @param string $instanceConfigId The customer managed instance configuration id. The id must start with 'custom-'.
 */
function delete_instance_config(string $projectId, string $instanceConfigId)
{
    $instanceAdminClient = new InstanceAdminClient();
    $instanceConfigName = $instanceAdminClient->instanceConfigName(
        $projectId,
        $instanceConfigId
    );

    $request = new DeleteInstanceConfigRequest();
    $request->setName($instanceConfigName);

    $instanceAdminClient->deleteInstanceConfig($request);
    printf('Deleted instance configuration %s' . PHP_EOL, $instanceConfigId);
}

Note: The old client library interface code samples for PHP are archived in GitHub.

Python

To learn how to install and use the client library for Spanner, see Spanner client libraries.

def delete_instance_config(user_config_id):
    """Deleted the user-managed instance configuration."""
    spanner_client = spanner.Client()
    spanner_client.instance_admin_api.delete_instance_config(name=user_config_id)
    print("Instance config {} successfully deleted".format(user_config_id))

Note: The old client library interface code samples for Python are archived in GitHub.

Ruby

To learn how to install and use the client library for Spanner, see Spanner client libraries.

require "google/cloud/spanner"
require "google/cloud/spanner/admin/instance"

def spanner_delete_instance_config user_config_id:
  # user_config_id = "The customer managed instance configuration ID, e.g projects/<project>/instanceConfigs/custom-nam11"

  instance_admin_client = Google::Cloud::Spanner::Admin::Instance.instance_admin
  instance_admin_client.delete_instance_config name: user_config_id
  puts "Deleted instance configuration #{user_config_id}"
end

What's next

• Learn how to insert, update, and delete data with Data Manipulation Language (DML) or the gcloud CLI.
• Grant IAM roles for the instance and its databases.
• Understand how to design a Spanner schema.
• Spanner Quotas and limits.