gcloud alpha metastore services migrations start - start the migration on a Dataproc Metastore service

gcloud alpha metastore services migrations start(SERVICE :--location=LOCATION)((--cdc-password=CDC_PASSWORD--cdc-username=CDC_USERNAME--reverse-proxy-subnet=REVERSE_PROXY_SUBNET--subnet-ip-range=SUBNET_IP_RANGE--vpc-network=VPC_NETWORK :--bucket=BUCKET--root-path=ROOT_PATH; default="/migration") (--connection-password=CONNECTION_PASSWORD--connection-username=CONNECTION_USERNAME--hive-database-name=HIVE_DATABASE_NAME--instance-connection-name=INSTANCE_CONNECTION_NAME--ip-address=IP_ADDRESS--nat-subnet=NAT_SUBNET--port=PORT--proxy-subnet=PROXY_SUBNET))[--async][GCLOUD_WIDE_FLAG …]

If run asynchronously with--async, exits after printing theoperation name that can be used to poll the status of the migration operationvia:

gcloudmetastoreoperationsdescribe

Service resource - The Dataproc Metastore service to start the migration on. Thearguments in this group can be used to specify the attributes of this resource.(NOTE) Some attributes are not given arguments in this group but can be set inother ways.

To set theproject attribute:

• provide the argumentservice on the command line with a fullyspecified name;
• provide the argument--project on the command line;
• set the propertycore/project.

This must be specified.

SERVICE

ID of the service or fully qualified identifier for the service.

To set theservice attribute:

• provide the argumentservice on the command line.

This positional argument must be specified if any of the other arguments in thisgroup are specified.

--location=LOCATION

The location of the Dataproc Metastore service.

If not specified, will usedefault metastore/location.To set thelocation attribute:

• provide the argumentservice on the command line with a fullyspecified name;
• provide the argument--location on the command line;
• set the propertymetastore/location.

Configuration information required by Dataproc Metastore to start the migration.This must be specified.

Configuration information specific to migrating from "Self-Managed HiveMetastore on Google Cloud Platform with Cloud SQL as the backend database" to aDataproc Metastore service.

Configuration information required to start the Change Data Capture (CDC)streams from customer's Cloud SQL database to backend database of DataprocMetastore.This must be specified.

--cdc-password=CDC_PASSWORD

The password for the user that Datastream service should use for the MySQLconnection.

This flag argument must be specified if any of the other arguments in this groupare specified.

--cdc-username=CDC_USERNAME

The username that the Datastream service should use for the MySQL connection.

This flag argument must be specified if any of the other arguments in this groupare specified.

--reverse-proxy-subnet=REVERSE_PROXY_SUBNET

The URL of the subnetwork resource to create the VM instance hosting the reverseproxy in. More context inhttps://cloud.google.com/datastream/docs/private-connectivity#reverse-csql-proxyThe subnetwork should reside in the network provided in the request thatDatastream will peer to and should be in the same region as Datastream, in thefollowing format."projects/{project_id}/regions/{region_id}/subnetworks/{subnetwork_id}""

This flag argument must be specified if any of the other arguments in this groupare specified.

--subnet-ip-range=SUBNET_IP_RANGE

A "/29" CIDR IP range for peering with datastream

This flag argument must be specified if any of the other arguments in this groupare specified.

--vpc-network=VPC_NETWORK

Fully qualified name of the Cloud SQL instance's VPC network or the shared VPCnetwork that Datastream will peer to, in the following format:"projects/{project_id}/locations/global/networks/{network_id}". More context inhttps://cloud.google.com/datastream/docs/network-connectivity-options#privateconnectivity

This flag argument must be specified if any of the other arguments in this groupare specified.

--bucket=BUCKET

The bucket to write the intermediate stream event data in. The bucket name mustbe without any prefix like "gs://". This field is optional. If not set, theArtifacts Cloud Storage bucket is used.

--root-path=ROOT_PATH; default="/migration"

The root path inside the Cloud Storage bucket. The stream event data will bewritten to this path. The default value is "/migration".

Configuration information required for Dataproc Metastore to establish customerdatabase connection before the cutover phase of migration.This must be specified.

--connection-password=CONNECTION_PASSWORD

The password for the user that Dataproc Metastore service should use to connectto the database.

This flag argument must be specified if any of the other arguments in this groupare specified.

--connection-username=CONNECTION_USERNAME

The username that Dataproc Metastore service should use to connect to thedatabase.

This flag argument must be specified if any of the other arguments in this groupare specified.

--hive-database-name=HIVE_DATABASE_NAME

The name of the hive metastore database.

This flag argument must be specified if any of the other arguments in this groupare specified.

--instance-connection-name=INSTANCE_CONNECTION_NAME

The Cloud SQL database connection name, in the format,"project_id:region:instance_name"

This flag argument must be specified if any of the other arguments in this groupare specified.

--ip-address=IP_ADDRESS

The private IP address of the Cloud SQL instance.

This flag argument must be specified if any of the other arguments in this groupare specified.

--nat-subnet=NAT_SUBNET

The relative resource name of the subnetwork to be used for Private ServiceConnect. Note that this cannot be a regular subnet and is used only for NAT.More context inhttps://cloud.google.com/vpc/docs/about-vpc-hosted-services#psc-subnets.This subnet is used to publish the SOCKS5 proxy service. The subnet size must beat least/29 and it should reside in a network through which theCloud SQL instance is accessible. The resource name should be in the format,"projects/{project_id}/regions/{region_id}/subnetworks/{subnetwork_id}"

This flag argument must be specified if any of the other arguments in this groupare specified.

--port=PORT

The network port of the database.

This flag argument must be specified if any of the other arguments in this groupare specified.

--proxy-subnet=PROXY_SUBNET

The relative resource name of the subnetwork to deploy the SOCKS5 proxy servicein. The subnetwork should reside in a network through which the Cloud SQLinstance is accessible. The resource name should be in the format,"projects/{project_id}/regions/{region_id}/subnetworks/{subnetwork_id}"

This flag argument must be specified if any of the other arguments in this groupare specified.

--async

Return immediately, without waiting for the operation in progress to complete.

Run$gcloud help for details.