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    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" 
 : 
 integer 
 , 
 "processingUnits" 
 : 
 integer 
 , 
 "replicaComputeCapacity" 
 : 
 [ 
 { 
 object (  ReplicaComputeCapacity 
 
) 
 } 
 ] 
 , 
 "autoscalingConfig" 
 : 
 { 
 object (  AutoscalingConfig 
 
) 
 } 
 , 
 "state" 
 : 
 enum (  State 
 
) 
 , 
 "labels" 
 : 
 { 
 string 
 : 
 string 
 , 
 ... 
 } 
 , 
 "instanceType" 
 : 
 enum (  InstanceType 
 
) 
 , 
 "endpointUris" 
 : 
 [ 
 string 
 ] 
 , 
 "createTime" 
 : 
 string 
 , 
 "updateTime" 
 : 
 string 
 , 
 "freeInstanceMetadata" 
 : 
 { 
 object (  FreeInstanceMetadata 
 
) 
 } 
 , 
 "edition" 
 : 
 enum (  Edition 
 
) 
 , 
 "defaultBackupScheduleType" 
 : 
 enum (  DefaultBackupScheduleType 
 
) 
 }
    Fields
    name

    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.

    config

    string

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

    displayName

    string

    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.

    nodeCount

    integer

    The number of nodes allocated to this instance. At most, one of either nodeCount or processingUnits should be present in the message.

    Users can set the nodeCount field to specify the target number of nodes allocated to the instance.

    If autoscaling is enabled, nodeCount is treated as an OUTPUT_ONLY field and reflects the current number of nodes allocated to the instance.

    This might be zero in API responses for instances that are not yet in the READY state.

    If the instance has varying node count across replicas (achieved by setting asymmetricAutoscalingOptions in the autoscaling configuration), the nodeCount set here is the maximum node count across all replicas.

    For more information, see Compute capacity, nodes, and processing units .

    processingUnits

    integer

    The number of processing units allocated to this instance. At most, one of either processingUnits or nodeCount should be present in the message.

    Users can set the processingUnits field to specify the target number of processing units allocated to the instance.

    If autoscaling is enabled, processingUnits is treated as an OUTPUT_ONLY field and reflects the current number of processing units allocated to the instance.

    This might be zero in API responses for instances that are not yet in the READY state.

    If the instance has varying processing units per replica (achieved by setting asymmetricAutoscalingOptions in the autoscaling configuration), the processingUnits set here is the maximum processing units across all replicas.

    For more information, see Compute capacity, nodes and processing units .

    replicaComputeCapacity[]

    object ( ReplicaComputeCapacity )

    Output only. Lists the compute capacity per ReplicaSelection. A replica selection identifies a set of replicas with common properties. Replicas identified by a ReplicaSelection are scaled with the same compute capacity.

    autoscalingConfig

    object ( AutoscalingConfig )

    Optional. The autoscaling configuration. Autoscaling is enabled if this field is set. When autoscaling is enabled, nodeCount and processingUnits are treated as OUTPUT_ONLY fields and reflect the current compute capacity allocated to the instance.

    state

    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 .

    labels

    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_-]{0,62} .
    • Label values must be between 0 and 63 characters long and must conform to the regular expression [a-z0-9_-]{0,63} .
    • No more than 64 labels can be associated with a given resource.

    See https://goo.gl/xmQnxf 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.

    instanceType

    enum ( InstanceType )

    The InstanceType of the current instance.

    endpointUris[]

    string

    Deprecated. This field is not populated.

    createTime

    string ( Timestamp format)

    Output only. The time at which the instance was created.

    Uses RFC 3339, where generated output will always be Z-normalized and uses 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .

    updateTime

    string ( Timestamp format)

    Output only. The time at which the instance was most recently updated.

    Uses RFC 3339, where generated output will always be Z-normalized and uses 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .

    freeInstanceMetadata

    object ( FreeInstanceMetadata )

    Free instance metadata. Only populated for free instances.

    edition

    enum ( Edition )

    Optional. The Edition of the current instance.

    defaultBackupScheduleType

    enum ( DefaultBackupScheduleType )

    Optional. Controls the default backup schedule behavior for new databases within the instance. By default, a backup schedule is created automatically when a new database is created in a new instance.

    Note that the AUTOMATIC value isn't permitted for free instances, as backups and backup schedules aren't supported for free instances.

    In the instances.get or instances.list response, if the value of defaultBackupScheduleType isn't set, or set to NONE , Spanner doesn't create a default backup schedule for new databases in the instance.

    ReplicaComputeCapacity

    ReplicaComputeCapacity describes the amount of server resources that are allocated to each replica identified by the replica selection.

    JSON representation 
     { 
 "replicaSelection" 
 : 
 { 
 object (  ReplicaSelection 
 
) 
 } 
 , 
 // Union field compute_capacity 
can be only one of the following: 
 "nodeCount" 
 : 
 integer 
 , 
 "processingUnits" 
 : 
 integer 
 // End of list of possible types for union field compute_capacity 
. 
 }
    Fields
    replicaSelection

    object ( ReplicaSelection )

    Required. Identifies replicas by specified properties. All replicas in the selection have the same amount of compute capacity.

    Union field compute_capacity . Compute capacity allocated to each replica identified by the specified selection. The unit is selected based on the unit used to specify the instance size for non-autoscaling instances, or the unit used in autoscaling limit for autoscaling instances. compute_capacity can be only one of the following:
    nodeCount

    integer

    The number of nodes allocated to each replica.

    This may be zero in API responses for instances that are not yet in state READY .

    processingUnits

    integer

    The number of processing units allocated to each replica.

    This may be zero in API responses for instances that are not yet in state READY .

    ReplicaSelection

    ReplicaSelection identifies replicas with common properties.

    JSON representation 
     { 
 "location" 
 : 
 string 
 }
    Fields
    location

    string

    Required. Name of the location of the replicas (for example, "us-central1").

    AutoscalingConfig

    Autoscaling configuration for an instance.

    JSON representation 
     { 
 "autoscalingLimits" 
 : 
 { 
 object (  AutoscalingLimits 
 
) 
 } 
 , 
 "autoscalingTargets" 
 : 
 { 
 object (  AutoscalingTargets 
 
) 
 } 
 , 
 "asymmetricAutoscalingOptions" 
 : 
 [ 
 { 
 object (  AsymmetricAutoscalingOption 
 
) 
 } 
 ] 
 }
    Fields
    autoscalingLimits

    object ( AutoscalingLimits )

    Required. Autoscaling limits for an instance.
    autoscalingTargets

    object ( AutoscalingTargets )

    Required. The autoscaling targets for an instance.
    asymmetricAutoscalingOptions[]

    object ( AsymmetricAutoscalingOption )

    Optional. Optional asymmetric autoscaling options. Replicas matching the replica selection criteria will be autoscaled independently from other replicas. The autoscaler will scale the replicas based on the utilization of replicas identified by the replica selection. Replica selections should not overlap with each other.

    Other replicas (those do not match any replica selection) will be autoscaled together and will have the same compute capacity allocated to them.

    AutoscalingLimits

    The autoscaling limits for the instance. Users can define the minimum and maximum compute capacity allocated to the instance, and the autoscaler will only scale within that range. Users can either use nodes or processing units to specify the limits, but should use the same unit to set both the min_limit and maxLimit.

    JSON representation 
     { 
 // Union field min_limit 
can be only one of the following: 
 "minNodes" 
 : 
 integer 
 , 
 "minProcessingUnits" 
 : 
 integer 
 // End of list of possible types for union field min_limit 
. 
 // Union field max_limit 
can be only one of the following: 
 "maxNodes" 
 : 
 integer 
 , 
 "maxProcessingUnits" 
 : 
 integer 
 // End of list of possible types for union field max_limit 
. 
 }
    Fields
    Union field min_limit . The minimum compute capacity for the instance. min_limit can be only one of the following:
    minNodes

    integer

    Minimum number of nodes allocated to the instance. If set, this number should be greater than or equal to 1.

    minProcessingUnits

    integer

    Minimum number of processing units allocated to the instance. If set, this number should be multiples of 1000.

    Union field max_limit . The maximum compute capacity for the instance. The maximum compute capacity should be less than or equal to 10X the minimum compute capacity. max_limit can be only one of the following:
    maxNodes

    integer

    Maximum number of nodes allocated to the instance. If set, this number should be greater than or equal to minNodes.

    maxProcessingUnits

    integer

    Maximum number of processing units allocated to the instance. If set, this number should be multiples of 1000 and be greater than or equal to minProcessingUnits.

    AutoscalingTargets

    The autoscaling targets for an instance.

    JSON representation 
     { 
 "highPriorityCpuUtilizationPercent" 
 : 
 integer 
 , 
 "storageUtilizationPercent" 
 : 
 integer 
 }
    Fields
    highPriorityCpuUtilizationPercent

    integer

    Required. The target high priority cpu utilization percentage that the autoscaler should be trying to achieve for the instance. This number is on a scale from 0 (no utilization) to 100 (full utilization). The valid range is [10, 90] inclusive.
    storageUtilizationPercent

    integer

    Required. The target storage utilization percentage that the autoscaler should be trying to achieve for the instance. This number is on a scale from 0 (no utilization) to 100 (full utilization). The valid range is [10, 99] inclusive.

    AsymmetricAutoscalingOption

    AsymmetricAutoscalingOption specifies the scaling of replicas identified by the given selection.

    JSON representation 
     { 
 "replicaSelection" 
 : 
 { 
 object (  ReplicaSelection 
 
) 
 } 
 , 
 "overrides" 
 : 
 { 
 object (  AutoscalingConfigOverrides 
 
) 
 } 
 }
    Fields
    replicaSelection

    object ( ReplicaSelection )

    Required. Selects the replicas to which this AsymmetricAutoscalingOption applies. Only read-only replicas are supported.
    overrides

    object ( AutoscalingConfigOverrides )

    Optional. Overrides applied to the top-level autoscaling configuration for the selected replicas.

    AutoscalingConfigOverrides

    Overrides the top-level autoscaling configuration for the replicas identified by replicaSelection . All fields in this message are optional. Any unspecified fields will use the corresponding values from the top-level autoscaling configuration.

    JSON representation 
     { 
 "autoscalingLimits" 
 : 
 { 
 object (  AutoscalingLimits 
 
) 
 } 
 , 
 "autoscalingTargetHighPriorityCpuUtilizationPercent" 
 : 
 integer 
 }
    Fields
    autoscalingLimits

    object ( AutoscalingLimits )

    Optional. If specified, overrides the min/max limit in the top-level autoscaling configuration for the selected replicas.
    autoscalingTargetHighPriorityCpuUtilizationPercent

    integer

    Optional. If specified, overrides the autoscaling target highPriorityCpuUtilizationPercent in the top-level autoscaling configuration for the selected replicas.

    State

    Indicates the current state of the instance.

    Enums
    STATE_UNSPECIFIED Not specified.
    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.

    InstanceType

    The type of this instance. The type can be used to distinguish product variants, that can affect aspects like: usage restrictions, quotas and billing. Currently this is used to distinguish FREE_INSTANCE vs PROVISIONED instances.

    Enums
    INSTANCE_TYPE_UNSPECIFIED Not specified.
    PROVISIONED Provisioned instances have dedicated resources, standard usage limits and support.
    FREE_INSTANCE Free instances provide no guarantee for dedicated resources, [nodeCount, processingUnits] should be 0. They come with stricter usage limits and limited support.

    FreeInstanceMetadata

    Free instance specific metadata that is kept even after an instance has been upgraded for tracking purposes.

    JSON representation 
     { 
 "expireTime" 
 : 
 string 
 , 
 "upgradeTime" 
 : 
 string 
 , 
 "expireBehavior" 
 : 
 enum (  ExpireBehavior 
 
) 
 }
    Fields
    expireTime

    string ( Timestamp format)

    Output only. Timestamp after which the instance will either be upgraded or scheduled for deletion after a grace period. ExpireBehavior is used to choose between upgrading or scheduling the free instance for deletion. This timestamp is set during the creation of a free instance.

    Uses RFC 3339, where generated output will always be Z-normalized and uses 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .
    upgradeTime

    string ( Timestamp format)

    Output only. If present, the timestamp at which the free instance was upgraded to a provisioned instance.

    Uses RFC 3339, where generated output will always be Z-normalized and uses 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z" , "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30" .
    expireBehavior

    enum ( ExpireBehavior )

    Specifies the expiration behavior of a free instance. The default of ExpireBehavior is REMOVE_AFTER_GRACE_PERIOD . This can be modified during or after creation, and before expiration.

    ExpireBehavior

    Allows users to change behavior when a free instance expires.

    Enums
    EXPIRE_BEHAVIOR_UNSPECIFIED Not specified.
    FREE_TO_PROVISIONED When the free instance expires, upgrade the instance to a provisioned instance.
    REMOVE_AFTER_GRACE_PERIOD When the free instance expires, disable the instance, and delete it after the grace period passes if it has not been upgraded.

    Edition

    The edition selected for this instance. Different editions provide different capabilities at different price points.

    Enums
    EDITION_UNSPECIFIED Edition not specified.
    STANDARD Standard edition.
    ENTERPRISE Enterprise edition.
    ENTERPRISE_PLUS Enterprise Plus edition.

    DefaultBackupScheduleType

    Indicates the default backup schedule behavior for new databases within the instance.

    Enums
    DEFAULT_BACKUP_SCHEDULE_TYPE_UNSPECIFIED Not specified.
    NONE A default backup schedule isn't created automatically when a new database is created in the instance.
    AUTOMATIC A default backup schedule is created automatically when a new database is created in the instance. The default backup schedule creates a full backup every 24 hours. These full backups are retained for 7 days. You can edit or delete the default backup schedule once it's created.

    Methods

    create

    		Creates an instance and begins preparing it to begin serving.

    delete

    		Deletes an instance.

    get

    		Gets information about a particular instance.

    getIamPolicy

    		Gets the access control policy for an instance resource.

    list

    		Lists all instances in the given project.

    move

    		Moves an instance to the target instance configuration.

    patch

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

    setIamPolicy

    		Sets the access control policy on an instance resource.

    testIamPermissions

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