REST Resource: projects.locations.clusters.instances

Resource: Instance

An Instance is a computing unit that an end customer can connect to. It's the main unit of computing resources in AlloyDB.

JSON representation 
{
  "name": string,
  "displayName": string,
  "uid": string,
  "createTime": string,
  "updateTime": string,
  "deleteTime": string,
  "labels": {
    string: string,
    ...
  },
  "state": enum (State),
  "instanceType": enum (InstanceType),
  "machineConfig": {
    object (MachineConfig)
  },
  "availabilityType": enum (AvailabilityType),
  "gceZone": string,
  "databaseFlags": {
    string: string,
    ...
  },
  "writableNode": {
    object (Node)
  },
  "nodes": [
    {
      object (Node)
    }
  ],
  "queryInsightsConfig": {
    object (QueryInsightsInstanceConfig)
  },
  "observabilityConfig": {
    object (ObservabilityInstanceConfig)
  },
  "readPoolConfig": {
    object (ReadPoolConfig)
  },
  "ipAddress": string,
  "publicIpAddress": string,
  "reconciling": boolean,
  "etag": string,
  "annotations": {
    string: string,
    ...
  },
  "updatePolicy": {
    object (UpdatePolicy)
  },
  "clientConnectionConfig": {
    object (ClientConnectionConfig)
  },
  "satisfiesPzs": boolean,
  "pscInstanceConfig": {
    object (PscInstanceConfig)
  },
  "networkConfig": {
    object (InstanceNetworkConfig)
  },
  "geminiConfig": {
    object (GeminiInstanceConfig)
  },
  "outboundPublicIpAddresses": [
    string
  ],
  "connectionPoolConfig": {
    object (ConnectionPoolConfig)
  },
  "gcaConfig": {
    object (GCAInstanceConfig)
  }
}
Fields
name

string

Output only. The name of the instance resource with the format: * projects/{project}/locations/{region}/clusters/{clusterId}/instances/{instanceId} where the cluster and instance ID segments should satisfy the regex expression [a-z]([a-z0-9-]{0,61}[a-z0-9])?, e.g. 1-63 characters of lowercase letters, numbers, and dashes, starting with a letter, and ending with a letter or number. For more details see https://google.aip.dev/122. The prefix of the instance resource name is the name of the parent resource: * projects/{project}/locations/{region}/clusters/{clusterId}
displayName

string

User-settable and human-readable display name for the Instance.
uid

string

Output only. The system-generated UID of the resource. The UID is assigned when the resource is created, and it is retained until it is deleted.
createTime

string (Timestamp format)

Output only. Create time stamp

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. Update time stamp

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".
deleteTime

string (Timestamp format)

Output only. Delete time stamp

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".
labels

map (key: string, value: string)

Labels as key value pairs

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
state

enum (State)

Output only. The current serving state of the instance.
instanceType

enum (InstanceType)

Required. The type of the instance. Specified at creation time.
machineConfig

object (MachineConfig)

Configurations for the machines that host the underlying database engine.
availabilityType

enum (AvailabilityType)

Availability type of an Instance. If empty, defaults to REGIONAL for primary instances. For read pools, availabilityType is always UNSPECIFIED. Instances in the read pools are evenly distributed across available zones within the region (i.e. read pools with more than one node will have a node in at least two zones).
gceZone

string

The Compute Engine zone that the instance should serve from, per https://cloud.google.com/compute/docs/regions-zones This can ONLY be specified for ZONAL instances. If present for a REGIONAL instance, an error will be thrown. If this is absent for a ZONAL instance, instance is created in a random zone with available capacity.
databaseFlags

map (key: string, value: string)

Database flags. Set at the instance level. They are copied from the primary instance on secondary instance creation. Flags that have restrictions default to the value at primary instance on read instances during creation. Read instances can set new flags or override existing flags that are relevant for reads, for example, for enabling columnar cache on a read instance. Flags set on read instance might or might not be present on the primary instance.

This is a list of "key": "value" pairs. "key": The name of the flag. These flags are passed at instance setup time, so include both server options and system variables for Postgres. Flags are specified with underscores, not hyphens. "value": The value of the flag. Booleans are set to on for true and off for false. This field must be omitted if the flag doesn't take a value.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
writableNode

object (Node)

Output only. This is set for the read-write VM of the PRIMARY instance only.
nodes[]

object (Node)

Output only. List of available read-only VMs in this instance, including the standby for a PRIMARY instance.
queryInsightsConfig

object (QueryInsightsInstanceConfig)

Configuration for query insights.
observabilityConfig

object (ObservabilityInstanceConfig)

Configuration for observability.
readPoolConfig

object (ReadPoolConfig)

Read pool instance configuration. This is required if the value of instanceType is READ_POOL.
ipAddress

string

Output only. The IP address for the Instance. This is the connection endpoint for an end-user application.
publicIpAddress

string

Output only. The public IP addresses for the Instance. This is available ONLY when enablePublicIp is set. This is the connection endpoint for an end-user application.
reconciling

boolean

Output only. Reconciling (https://google.aip.dev/128#reconciliation). Set to true if the current state of Instance does not match the user's intended state, and the service is actively updating the resource to reconcile them. This can happen due to user-triggered updates or system actions like failover or maintenance.
etag

string

For Resource freshness validation (https://google.aip.dev/154)
annotations

map (key: string, value: string)

Annotations to allow client tools to store small amount of arbitrary data. This is distinct from labels. https://google.aip.dev/128

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
updatePolicy

object (UpdatePolicy)

Update policy that will be applied during instance update. This field is not persisted when you update the instance. To use a non-default update policy, you must specify explicitly specify the value in each update request.
clientConnectionConfig

object (ClientConnectionConfig)

Optional. Client connection specific configurations
satisfiesPzs

boolean

Output only. Reserved for future use.
pscInstanceConfig

object (PscInstanceConfig)

Optional. The configuration for Private Service Connect (PSC) for the instance.
networkConfig

object (InstanceNetworkConfig)

Optional. Instance-level network configuration.
geminiConfig
(deprecated)

object (GeminiInstanceConfig)

Optional. Deprecated and unused. This field will be removed in the near future.
outboundPublicIpAddresses[]

string

Output only. All outbound public IP addresses configured for the instance.
connectionPoolConfig

object (ConnectionPoolConfig)

Optional. The configuration for Managed Connection Pool (MCP).
gcaConfig

object (GCAInstanceConfig)

Output only. Configuration parameters related to Gemini Cloud Assist.

State

Instance State

Enums
STATE_UNSPECIFIED The state of the instance is unknown.
READY The instance is active and running.
STOPPED The instance is stopped. Instance name and IP resources are preserved.
CREATING The instance is being created.
DELETING The instance is being deleted.
MAINTENANCE The instance is down for maintenance.
FAILED The creation of the instance failed or a fatal error occurred during an operation on the instance. Note: Instances in this state would tried to be auto-repaired. And Customers should be able to restart, update or delete these instances.
BOOTSTRAPPING Index 7 is used in the producer apis for ROLLED_BACK state. Keeping that index unused in case that state also needs to exposed via consumer apis in future. The instance has been configured to sync data from some other source.
PROMOTING The instance is being promoted.

InstanceType

Type of an Instance

Enums
INSTANCE_TYPE_UNSPECIFIED The type of the instance is unknown.
PRIMARY PRIMARY instances support read and write operations.
READ_POOL READ POOL instances support read operations only. Each read pool instance consists of one or more homogeneous nodes. * Read pool of size 1 can only have zonal availability. * Read pools with node count of 2 or more can have regional availability (nodes are present in 2 or more zones in a region).
SECONDARY SECONDARY instances support read operations only. SECONDARY instance is a cross-region read replica

MachineConfig

MachineConfig describes the configuration of a machine.

JSON representation 
{
  "cpuCount": integer,
  "machineType": string
}
Fields
cpuCount

integer

The number of CPU's in the VM instance.
machineType

string

Machine type of the VM instance. E.g. "n2-highmem-4", "n2-highmem-8", "c4a-highmem-4-lssd". cpuCount must match the number of vCPUs in the machine type.

AvailabilityType

The Availability type of an instance. Potential values:

  • ZONAL: The instance serves data from only one zone. Outages in that zone affect instance availability.
  • REGIONAL: The instance can serve data from more than one zone in a region (it is highly available).
Enums
AVAILABILITY_TYPE_UNSPECIFIED This is an unknown Availability type.
ZONAL Zonal available instance.
REGIONAL Regional (or Highly) available instance.

Node

Details of a single node in the instance. Nodes in an AlloyDB instance are ephemeral, they can change during update, failover, autohealing and resize operations.

JSON representation 
{
  "zoneId": string,
  "id": string,
  "ip": string,
  "state": string
}
Fields
zoneId

string

Output only. The Compute Engine zone of the VM e.g. "us-central1-b".
id

string

Output only. The identifier of the VM e.g. "test-read-0601-407e52be-ms3l".
ip

string

Output only. The private IP address of the VM e.g. "10.57.0.34".
state

string

Output only. Determined by state of the compute VM and postgres-service health. Compute VM state can have values listed in https://cloud.google.com/compute/docs/instances/instance-life-cycle and postgres-service health can have values: HEALTHY and UNHEALTHY.

QueryInsightsInstanceConfig

QueryInsights Instance specific configuration.

JSON representation 
{
  "queryStringLength": integer,
  "recordApplicationTags": boolean,
  "recordClientAddress": boolean,
  "queryPlansPerMinute": integer
}
Fields
queryStringLength

integer (uint32 format)

Query string length. The default value is 1024. Any integer between 256 and 4500 is considered valid.
recordApplicationTags

boolean

Record application tags for an instance. This flag is turned "on" by default.
recordClientAddress

boolean

Record client address for an instance. Client address is PII information. This flag is turned "on" by default.
queryPlansPerMinute

integer (uint32 format)

Number of query execution plans captured by Insights per minute for all queries combined. The default value is 5. Any integer between 0 and 20 is considered valid.

ObservabilityInstanceConfig

Observability Instance specific configuration.

JSON representation 
{
  "enabled": boolean,
  "preserveComments": boolean,
  "trackWaitEvents": boolean,
  "trackWaitEventTypes": boolean,
  "maxQueryStringLength": integer,
  "recordApplicationTags": boolean,
  "queryPlansPerMinute": integer,
  "trackActiveQueries": boolean,
  "assistiveExperiencesEnabled": boolean
}
Fields
enabled

boolean

Observability feature status for an instance. This flag is turned "off" by default.
preserveComments

boolean

Preserve comments in query string for an instance. This flag is turned "off" by default.
trackWaitEvents

boolean

Track wait events during query execution for an instance. This flag is turned "on" by default but tracking is enabled only after observability enabled flag is also turned on.
trackWaitEventTypes

boolean

Output only. Track wait event types during query execution for an instance. This flag is turned "on" by default but tracking is enabled only after observability enabled flag is also turned on. This is read-only flag and only modifiable by internal API.
maxQueryStringLength

integer

Query string length. The default value is 10k.
recordApplicationTags

boolean

Record application tags for an instance. This flag is turned "off" by default.
queryPlansPerMinute

integer

Number of query execution plans captured by Insights per minute for all queries combined. The default value is 200. Any integer between 0 to 200 is considered valid.
trackActiveQueries

boolean

Track actively running queries on the instance. If not set, this flag is "off" by default.
assistiveExperiencesEnabled

boolean

Whether assistive experiences are enabled for this AlloyDB instance.

ReadPoolConfig

Configuration for a read pool instance.

JSON representation 
{
  "nodeCount": integer
}
Fields
nodeCount

integer

Read capacity, i.e. number of nodes in a read pool instance.

UpdatePolicy

Policy to be used while updating the instance.

JSON representation 
{
  "mode": enum (Mode)
}
Fields
mode

enum (Mode)

Mode for updating the instance.

Mode

Specifies the available modes of update.

Enums
MODE_UNSPECIFIED Mode is unknown.
DEFAULT Least disruptive way to apply the update.
FORCE_APPLY Performs a forced update when applicable. This will be fast but may incur a downtime.

ClientConnectionConfig

Client connection configuration

JSON representation 
{
  "requireConnectors": boolean,
  "sslConfig": {
    object (SslConfig)
  }
}
Fields
requireConnectors

boolean

Optional. Configuration to enforce connectors only (ex: AuthProxy) connections to the database.
sslConfig

object (SslConfig)

Optional. SSL configuration option for this instance.

PscInstanceConfig

PscInstanceConfig contains PSC related configuration at an instance level.

JSON representation 
{
  "serviceAttachmentLink": string,
  "allowedConsumerProjects": [
    string
  ],
  "pscDnsName": string,
  "pscInterfaceConfigs": [
    {
      object (PscInterfaceConfig)
    }
  ],
  "pscAutoConnections": [
    {
      object (PscAutoConnectionConfig)
    }
  ]
}
Fields
allowedConsumerProjects[]

string

Optional. List of consumer projects that are allowed to create PSC endpoints to service-attachments to this instance.
pscDnsName

string

Output only. The DNS name of the instance for PSC connectivity. Name convention: ...alloydb-psc.goog
pscInterfaceConfigs[]

object (PscInterfaceConfig)

Optional. Configurations for setting up PSC interfaces attached to the instance which are used for outbound connectivity. Only primary instances can have PSC interface attached. Currently we only support 0 or 1 PSC interface.
pscAutoConnections[]

object (PscAutoConnectionConfig)

Optional. Configurations for setting up PSC service automation.

PscInterfaceConfig

Configuration for setting up a PSC interface to enable outbound connectivity.

JSON representation 
{
  "networkAttachmentResource": string
}
Fields
networkAttachmentResource

string

The network attachment resource created in the consumer network to which the PSC interface will be linked. This is of the format: "projects/${CONSUMER_PROJECT}/regions/${REGION}/networkAttachments/${NETWORK_ATTACHMENT_NAME}". The network attachment must be in the same region as the instance.

PscAutoConnectionConfig

Configuration for setting up PSC service automation. Consumer projects in the configs will be allowlisted automatically for the instance.

JSON representation 
{
  "consumerProject": string,
  "consumerNetwork": string,
  "ipAddress": string,
  "status": string,
  "consumerNetworkStatus": string
}
Fields
consumerProject

string

The consumer project to which the PSC service automation endpoint will be created.
consumerNetwork

string

The consumer network for the PSC service automation, example: "projects/vpc-host-project/global/networks/default". The consumer network might be hosted a different project than the consumer project.
ipAddress

string

Output only. The IP address of the PSC service automation endpoint.
status

string

Output only. The status of the PSC service automation connection. Possible values: "STATE_UNSPECIFIED" - An invalid state as the default case. "ACTIVE" - The connection has been created successfully. "FAILED" - The connection is not functional since some resources on the connection fail to be created. "CREATING" - The connection is being created. "DELETING" - The connection is being deleted. "CREATE_REPAIRING" - The connection is being repaired to complete creation. "DELETE_REPAIRING" - The connection is being repaired to complete deletion.
consumerNetworkStatus

string

Output only. The status of the service connection policy. Possible values: "STATE_UNSPECIFIED" - Default state, when Connection Map is created initially. "VALID" - Set when policy and map configuration is valid, and their matching can lead to allowing creation of PSC Connections subject to other constraints like connections limit. "CONNECTION_POLICY_MISSING" - No Service Connection Policy found for this network and Service Class "POLICY_LIMIT_REACHED" - Service Connection Policy limit reached for this network and Service Class "CONSUMER_INSTANCE_PROJECT_NOT_ALLOWLISTED" - The consumer instance project is not in AllowedGoogleProducersResourceHierarchyLevels of the matching ServiceConnectionPolicy.

InstanceNetworkConfig

Metadata related to instance-level network configuration.

JSON representation 
{
  "authorizedExternalNetworks": [
    {
      object (AuthorizedNetwork)
    }
  ],
  "enablePublicIp": boolean,
  "enableOutboundPublicIp": boolean,
  "network": string
}
Fields
authorizedExternalNetworks[]

object (AuthorizedNetwork)

Optional. A list of external network authorized to access this instance.
enablePublicIp

boolean

Optional. Enabling public ip for the instance.
enableOutboundPublicIp

boolean

Optional. Enabling an outbound public IP address to support a database server sending requests out into the internet.
network

string

Output only. The resource link for the VPC network in which instance resources are created and from which they are accessible via Private IP. This will be the same value as the parent cluster's network. It is specified in the form: // projects/{projectNumber}/global/networks/{network_id}.

AuthorizedNetwork

AuthorizedNetwork contains metadata for an authorized network.

JSON representation 
{
  "cidrRange": string
}
Fields
cidrRange

string

CIDR range for one authorzied network of the instance.

GeminiInstanceConfig

Deprecated and unused. This field will be removed in the near future.

JSON representation 
{
  "entitled": boolean
}
Fields
entitled
(deprecated)

boolean

Output only. Deprecated and unused. This field will be removed in the near future.

ConnectionPoolConfig

Configuration for Managed Connection Pool (MCP).

JSON representation 
{
  "enabled": boolean,
  "enable": boolean,
  "flags": {
    string: string,
    ...
  },
  "defaultPoolSize": string,
  "minPoolSize": string,
  "poolMode": enum (PoolMode),
  "ignoreStartupParameters": [
    string
  ],
  "maxClientConn": string,
  "maxPreparedStatements": string,
  "queryWaitTimeout": string,
  "serverIdleTimeout": string,
  "statsUsers": [
    string
  ]
}
Fields
enabled

boolean

Optional. Whether to enable Managed Connection Pool (MCP).
enable

boolean

Optional. Deprecated; Prefer 'enabled' as this will be removed soon.
flags

map (key: string, value: string)

Optional. Connection Pool flags, as a list of "key": "value" pairs.

An object containing a list of "key": value pairs. Example: { "name": "wrench", "mass": "1.3kg", "count": "3" }.
defaultPoolSize

string

Optional. Deprecated. Use 'flags' instead. The default pool size. Defaults to 20.
minPoolSize

string

Optional. Deprecated. Use 'flags' instead. The minimum pool size. Defaults to 0.
poolMode

enum (PoolMode)

Optional. Deprecated. Use 'flags' instead. The pool mode. Defaults to POOL_MODE_TRANSACTION.
ignoreStartupParameters[]

string

Optional. Deprecated. Use 'flags' instead. The list of startup parameters to ignore. Defaults to ["extra_float_digits"]
maxClientConn

string

Optional. Deprecated. Use 'flags' instead. The maximum number of client connections allowed.
maxPreparedStatements

string

Optional. Deprecated. Use 'flags' instead. The maximum number of prepared statements allowed. MCP makes sure that any statement prepared by a client, up to this limit, is available on the backing server connection in transaction and statement pooling mode. Even if the statement was originally prepared on another server connection. Defaults to 0.
queryWaitTimeout

string

Optional. Deprecated. Use 'flags' instead. The maximum number of seconds queries are allowed to spend waiting for execution. If the query is not assigned to a server during that time, the client is disconnected. 0 disables.
serverIdleTimeout

string

Optional. Deprecated. Use 'flags' instead. The maximum number of seconds a server is allowed to be idle before it is disconnected. 0 disables.
statsUsers[]

string

Optional. Deprecated. Use 'flags' instead. The list of users that are allowed to connect to the MCP stats console. The users must exist in the database.

PoolMode

The pool mode. Defaults to POOL_MODE_TRANSACTION.

Enums
POOL_MODE_UNSPECIFIED The pool mode is not specified. Defaults to POOL_MODE_TRANSACTION.
POOL_MODE_SESSION Server is released back to pool after a client disconnects.
POOL_MODE_TRANSACTION Server is released back to pool after a transaction finishes.

GCAInstanceConfig

Instance level configuration parameters related to the Gemini Cloud Assist product.

JSON representation 
{
  "gcaEntitlement": enum (GCAEntitlementType)
}
Fields
gcaEntitlement

enum (GCAEntitlementType)

Output only. Represents the GCA entitlement state of the instance.

GCAEntitlementType

Enum representing the type of GCA entitlement assigned to a resource.

Enums
GCA_ENTITLEMENT_TYPE_UNSPECIFIED No GCA entitlement is assigned.
GCA_STANDARD The resource is entitled to the GCA Standard Tier.

Methods

create

 Creates a new Instance in a given project and location.

createsecondary

 Creates a new SECONDARY Instance in a given project and location.

delete

 Deletes a single Instance.

failover

 Forces a Failover for a highly available instance.

get

 Gets details of a single Instance.

getConnectionInfo

 Get instance metadata used for a connection.

injectFault

 Injects fault in an instance.

list

 Lists Instances in a given project and location.

patch

 Updates the parameters of a single Instance.

restart

 Restart an Instance in a cluster.