REST Resource: projects.instances

Resource: Instance

An isolated set of Cloud Spanner resources on which databases can be hosted.

JSON representation
  "name": string,
  "config": string,
  "displayName": string,
  "nodeCount": number,
  "state": enum (State),
  "labels": {
    string: string,


Required. A unique identifier for the instance, which cannot be changed after the instance is created. Values are of the form projects/<project>/instances/[a-z][-a-z0-9]*[a-z0-9]. The final segment of the name must be between 2 and 64 characters in length.



Required. The name of the instance's configuration. Values are of the form projects/<project>/instanceConfigs/<configuration>. See also InstanceConfig and instanceConfigs.list.



Required. The descriptive name for this instance as it appears in UIs. Must be unique per project and between 4 and 30 characters in length.



Required. The number of nodes allocated to this instance. This may be zero in API responses for instances that are not yet in state READY.

See the documentation for more information about nodes.


enum (State)

Output only. The current instance state. For instances.create, the state must be either omitted or set to CREATING. For instances.patch, the state must be either omitted or set to READY.


map (key: string, value: string)

Cloud Labels are a flexible and lightweight mechanism for organizing cloud resources into groups that reflect a customer's organizational needs and deployment strategies. Cloud Labels can be used to filter collections of resources. They can be used to control how resource metrics are aggregated. And they can be used as arguments to policy management rules (e.g. route, firewall, load balancing, etc.).

  • Label keys must be between 1 and 63 characters long and must conform to the following regular expression: [a-z]([-a-z0-9]*[a-z0-9])?.
  • Label values must be between 0 and 63 characters long and must conform to the regular expression ([a-z]([-a-z0-9]*[a-z0-9])?)?.
  • No more than 64 labels can be associated with a given resource.

See for more information on and examples of labels.

If you plan to use labels in your own code, please note that additional characters may be allowed in the future. And so you are advised to use an internal label representation, such as JSON, which doesn't rely upon specific characters being disallowed. For example, representing labels as the string: name + "_" + value would prove problematic if we were to allow "_" in a future release.


Indicates the current state of the instance.

CREATING The instance is still being created. Resources may not be available yet, and operations such as database creation may not work.
READY The instance is fully created and ready to do work such as creating databases.



Creates an instance and begins preparing it to begin serving.


Deletes an instance.


Gets information about a particular instance.


Gets the access control policy for an instance resource.


Lists all instances in the given project.


Updates an instance, and begins allocating or releasing resources as requested.


Sets the access control policy on an instance resource.


Returns permissions that the caller has on the specified instance resource.
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