Create a Looker (Google Cloud core) Private Service Connect instance

This page describes the process for using the gcloud CLI to create a Looker (Google Cloud core) instance with Private Service Connect enabled.

Private Service Connect can be enabled for a Looker (Google Cloud core) instance that meets the following criteria:

  • The Looker (Google Cloud core) instance must be new. Private Service Connect can be enabled only at the time of instance creation.
  • The instance cannot have public IP enabled.
  • The instance edition must be Enterprise (core-enterprise-annual) or Embed (core-embed-annual).

Before you begin

  1. In the Google Cloud console, on the project selector page, select the project where you want to create the Private Service Connect instance.

    Go to project selector

  2. Enable the Looker API for your project in the Google Cloud console. When enabling the API, you may need to refresh the console page to confirm that the API has been enabled.

    Enable the API

  3. Set up an OAuth client and create authorization credentials. The OAuth client lets you authenticate and access the instance. You must set up OAuth to create a Looker (Google Cloud core) instance, even if you are using a different authentication method to authenticate users into your instance.
  4. If you want to use VPC Service Controls or customer-managed encryption keys (CMEK) with the Looker (Google Cloud core) instance that you are creating, additional setup is required prior to instance creation. Additional edition and network configuration may also be required during instance creation.

Required roles

To get the permissions that you need to create a Looker (Google Cloud core) instance, ask your administrator to grant you the Looker Admin (roles/looker.admin) IAM role on the project the instance will reside in. For more information about granting roles, see Manage access to projects, folders, and organizations.

You might also be able to get the required permissions through custom roles or other predefined roles.

You may also need additional IAM roles to set up VPC Service Controls or customer-managed encryption keys (CMEK). Visit the documentation pages for those features to learn more.

Create a Private Service Connect instance

console

  1. Navigate to the Looker (Google Cloud core) product page from your project in the Google Cloud console. If you have already created a Looker (Google Cloud core) instance within this project, the Instances page will open.

    Go to Looker (Google Cloud core)

  2. Click CREATE INSTANCE.
  3. In the Instance name section, provide a name for your Looker (Google Cloud core) instance. The instance name isn't associated with the URL of the Looker (Google Cloud core) instance once it is created. The instance name cannot be changed after instance creation.
  4. In the OAuth Application Credentials section, enter the OAuth client ID and OAuth secret that you created when you set up your OAuth client.

  5. In the Region section, select the appropriate option from the drop-down menu to host your Looker (Google Cloud core) instance. Select the region that matches the region in the subscription contract, which is where the quota for your project is allocated. Available regions are listed on the Looker (Google Cloud core) locations documentation page.

    You cannot change the region once the instance has been created.

  6. In the Edition section, choose an Enterprise or Embed edition option. The edition type affects some of the features that are available for the instance. Make sure that you choose the same edition type as listed in your annual contract and that you have quota allocated for that edition type.

    • Enterprise: Looker (Google Cloud core) platform with enhanced security features for addressing a wide variety of internal BI and analytics use cases
    • Embed: Looker (Google Cloud core) platform for deploying and maintaining reliable external analytics and custom applications at scale

    Editions cannot be changed after instance creation. If you want to change an edition, you can use import and export to move your Looker (Google Cloud core) instance data into a new instance that is configured with a different edition.

  7. In the Customize your instance section, click SHOW CONFIGURATION OPTIONS to display a group of additional settings that you can customize for the instance.

  8. In the Connections section, under Instance IP assignment, select only Private IP. The type of network connection that you select impacts the Looker features available to the instance.

  9. Under Private IP Type, select Private Service Connect (PSC).

  10. Under Allowed VPCs, click Add Item to add the VPCs that will be allowed northbound access into the Looker (Google Cloud core) instance. In the Project field, select the project in which the network was created. In the Network drop-down menu, select the network. Add additional VPCs by clicking Add Item as needed.

  11. In the Encryption section, you can select the type of encryption to use on your instance. The following encryption options are available:

  12. In the Maintenance Window section, you can optionally specify the day of the week and the hour in which Looker (Google Cloud core) schedules maintenance. Maintenance windows last for one hour. By default, the Preferred Window option in the Maintenance Window is set to Any window.

  13. In the Deny Maintenance Period section, you can optionally specify a block of days on which Looker (Google Cloud core) doesn't schedule maintenance. Deny maintenance periods can be up to 60 days long. You must allow at least 14 days of maintenance availability between any 2 deny maintenance periods.

  14. Click Create.

gcloud

To create a Private Service Connect instance, run the gcloud looker instances create command with all the following flags:


gcloud looker instances create INSTANCE_NAME \
--no-public-ip-enabled \
--psc-enabled \
--oauth-client-id=OAUTH_CLIENT_ID \
--oauth-client-secret=OAUTH_CLIENT_SECRET \
--region=REGION \
--edition=EDITION \
--psc-allowed-vpcs=ALLOWED_VPC,ADDITIONAL_ALLOWED_VPCS \
--async

Replace the following:

  • INSTANCE_NAME: a name for your Looker (Google Cloud core) instance; it is not associated with the instance URL.
  • OAUTH_CLIENT_ID and OAUTH_CLIENT_SECRET: the OAuth client ID and OAuth secret that you created when you set up your OAuth client. After the instance has been created, enter the instance's URL in the Authorized redirect URIs section of the OAuth client.
  • REGION: the region in which your Looker (Google Cloud core) instance is hosted. Select the region that matches the region in the subscription contract. Available regions are listed on the Looker (Google Cloud core) locations documentation page.
  • EDITION: the edition for the instance. Its possible values are core-enterprise-annual, or core-embed-annual. Editions cannot be changed after instance creation. If you want to change an edition, you can use import and export to move your Looker (Google Cloud core) instance data into a new instance that is configured with a different edition.
  • ALLOWED_VPC: a VPC that will be allowed northbound (ingress) access into Looker (Google Cloud core). To access the instance from outside the VPC that the instance is located in, you must list at least one VPC. Specify a VPC using one of the following formats:
    • projects/{project}/global/networks/{network}
    • https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network}
  • ADDITIONAL_ALLOWED_VPCS: any additional VPCs to be allowed northbound access into Looker (Google Cloud core) can be added to the --psc-allowed-vpcs flag in a comma-separated list.

If you want, you can add more parameters to apply other instance settings: 

  [--maintenance-window-day=MAINTENANCE_WINDOW_DAY
          --maintenance-window-time=MAINTENANCE_WINDOW_TIME]
  [--deny-maintenance-period-end-date=DENY_MAINTENANCE_PERIOD_END_DATE
          --deny-maintenance-period-start-date=DENY_MAINTENANCE_PERIOD_START_DATE
          --deny-maintenance-period-time=DENY_MAINTENANCE_PERIOD_TIME]
  --kms-key=KMS_KEY_ID
  [--fips-enabled]
Replace the following:

  • MAINTENANCE_WINDOW_DAY: must be one of the following: friday, monday, saturday, sunday, thursday, tuesday, wednesday. See the Manage maintenance policies for Looker (Google Cloud core) documentation page for more information about maintenance window settings.
  • MAINTENANCE_WINDOW_TIME and DENY_MAINTENANCE_PERIOD_TIME: must be in UTC in 24-hour format (for example, 13:00, 17:45).
  • DENY_MAINTENANCE_PERIOD_START_DATE and DENY_MAINTENANCE_PERIOD_END_DATE: must be in the format YYYY-MM-DD.
  • KMS_KEY_ID: must be the key that is created when setting up customer-managed encryption keys (CMEK).

You may include the --fips-enabled flag to enable FIPS 140-2 level 1 compliance.

The process for creating a Private Service Connect instance differs from the process for creating a Looker (Google Cloud core) (private services access) instance in the following ways:

  • With Private Service Connect setup, the --consumer-network and --reserved-range flags are not necessary.
  • Private Service Connect instances require two additional flags: --no-public-ip-enabled and --psc-enabled.
  • The --psc-allowed-vpcs flag is a comma-separated list of VPCs. You can specify as many VPCs as you like in the list.

Check the status of the instance

It takes approximately 40-60 minutes for the instance to be created.

console

As the instance is being created, you can view its status on the Instances page within the console. You can also see your instance creation activity by clicking on the notifications icon in the Google Cloud console menu. On the Details page for the instance, its status will show Active once it's created.

gcloud

To check the status, use the gcloud looker instances describe command:

gcloud looker instances describe INSTANCE_NAME --region=REGION

Replace the following:

  • INSTANCE_NAME: the name of your Looker (Google Cloud core) instance.
  • REGION: the region in which your Looker (Google Cloud core) instance is hosted.

The instance is ready once it reaches the ACTIVE state.

Set up Private Service Connect for external services

For your Looker (Google Cloud core) instance to be able to connect to an external service, that external service must be published using Private Service Connect. Follow the instructions for publishing services by using Private Service Connect for any service that you want to publish.

Services can be published with automatic approval or with explicit approval. If you choose to publish with explicit approval, you must configure the service attachment as follows:

  • Set your service attachment allowlist to use projects (not networks).
  • Add the Looker tenant project ID to the allowlist.

You can find your Looker tenant project ID after your instance has been created by running the following command:

gcloud looker instances describe INSTANCE_NAME --region=REGION--format=json

Replace the following:

  • INSTANCE_NAME: the name of your Looker (Google Cloud core) instance.
  • REGION: the region in which your Looker (Google Cloud core) instance is hosted.

In the command output, the looker_service_attachment_uri field will contain your Looker tenant project ID. It will have the following format: projects/{Looker tenant project ID}/regions/…

Service attachment URI

When you later update your Looker (Google Cloud core) instance to connect to your service, you'll need the full service attachment URI for the external service. The URI will be specified as follows, using the project, region, and name that you used to create the service attachment:

projects/{project}/regions/{region}/serviceAttachments/{name}

Update a Looker (Google Cloud core) Private Service Connect instance

Once your Looker (Google Cloud core) Private Service Connect instance has been created, you can make the following changes:

Specify southbound connections

console

  1. On the Instances page, click the name of the instance for which you want to enable southbound (egress) connections.
  2. Click Edit.
  3. Expand the Connections section.
  4. To edit an existing service attachment, update the fully qualified domain name of the service in the Local FQDN field and the service attachment URI in the Target Service Attachment URI field.
  5. To add a new service attachment, click Add Item. Then, enter the fully qualified domain name of the service in the Local FQDN field and the service attachment URI in the Target Service Attachment URI field.
  6. Click Save.

gcloud

Use --psc-service-attachment flags to enable southbound (egress) connections to external services for which you have already set up Private Service Connect:

gcloud looker instances update INSTANCE_NAME \
--psc-service-attachment  domain=DOMAIN_1,attachment=SERVICE_ATTACHMENT_URI_1 \
--psc-service-attachment domain=DOMAIN_2,attachment=SERVICE_ATTACHMENT_URI_2 \
--region=REGION

Replace the following:

  • INSTANCE_NAME: the name of your Looker (Google Cloud core) instance.

  • DOMAIN_1 and DOMAIN_2: If you are connecting to a public service, use the service's domain name. If you are connecting to a private service, use your choice of a fully qualified domain name. The following restrictions apply to the domain name:

  • Each southbound connection supports a single domain.

  • The domain name must consist of at least three parts. For example, mydomain.github.com is acceptable, but github.com is not acceptable.

  • The last part of the name cannot be any the following:

    • googleapis.com
    • google.com
    • gcr.io
    • pkg.dev

    When you set up a connection to your service from within your Looker (Google Cloud core) instance, use this domain as the alias for your service.

  • SERVICE_ATTACHMENT_1 and SERVICE_ATTACHMENT_2: the full service attachment URI for the published service you are connecting to. Each service attachment URI can be accessed by a single domain.

  • REGION: the region in which your Looker (Google Cloud core) instance is hosted.

If you are connecting to a non-Google managed service in a region other than the region where your Looker (Google Cloud core) instance is located, enable global access on the producer load balancer.

Include all connections that should be enabled

Each time you run an update command with --psc-service-attachment flags, you must include every connection that you want to be enabled, including connections that were already enabled previously. For example, suppose you have previously connected an instance called my-instance to the www.cloud.com domain as follows:

gcloud looker instances update my-instance --psc-service-attachment \
domain=www.cloud.com,attachment=projects/123/regions/us-central1/serviceAttachment/cloud

Running the following command to add a new www.me.com connection would delete the www.cloud.com connection:

gcloud looker instances update my-instance --psc-service-attachment \
domain=www.me.com,attachment=projects/123/regions/us-central1/serviceAttachment/my-sa

To prevent deletion of the www.cloud.comconnection when you add the new www.me.com connection, include a separate psc-service-attachment flag for both the existing connection and the new connection within the update command as follows:

gcloud looker instances update my-instance --psc-service-attachment \
domain=www.cloud.com,attachment=projects/123/regions/us-central1/serviceAttachment/cloud \
--psc-service-attachment domain=www.me.com,attachment=projects/123/regions/us-central1/serviceAttachment/my-sa

Check southbound connection status

You can check the status of your southbound (egress) connections by again running the gcloud looker instances describe --format=json command. Each service attachment should be populated with a connection_status field.

Delete all southbound connections

To delete all southbound (egress) connections, run the following command:

gcloud looker instances update MY_INSTANCE --clear-psc-service-attachments \
--region=REGION

Replace the following:

  • INSTANCE_NAME: the name of your Looker (Google Cloud core) instance.
  • REGION: the region in which your Looker (Google Cloud core) instance is hosted.

Update allowed VPCs

console

  1. On the Instances page, click the name of the instance for which you want to update the VPCs that are allowed northbound access into the instance.
  2. Click Edit.
  3. Expand the Connections section.
  4. To add a new VPC, click Add Item. Then, select the project in which the VPC in the Project field, and select the network from the Network drop-down menu.
  5. To delete a VPC, click the Delete item trash icon that appears when you hold the pointer over the network.
  6. Click Save.

gcloud

Use the --psc-allowed-vpcs flag to update the list of VPCs that have authorized northbound access into the instance.

When you update the allowed VPCs, you must specify the entire list that you want to be in effect after your update. For example, suppose VPC ALLOWED_VPC_1 is already allowed, and you want to add VPC ALLOWED_VPC_2. To add VPC ALLOWED_VPC_1 while making sure that VPC ALLOWED_VPC_2 continues to be allowed, add the --psc-allowed-vpcs flag as follows:

gcloud looker instances update INSTANCE_NAME \
--psc-allowed-vpcs=ALLOWED_VPC_1,ALLOWED_VPC_2 --region=REGION

Replace the following:

  • INSTANCE_NAME: the name of your Looker (Google Cloud core) instance.
  • ALLOWED_VPC_1 and ALLOWED_VPC_2: the VPCs that will be allowed ingress into Looker (Google Cloud core). Specify each allowed VPC using one of the following formats:
    • projects/{project}/global/networks/{network}
    • https://www.googleapis.com/compute/v1/projects/{project}/global/networks/{network}
  • REGION: the region in which your Looker (Google Cloud core) instance is hosted.

Delete all allowed VPCs

To delete all allowed VPCs, run the following command:

gcloud looker instances update MY_INSTANCE --clear-psc-allowed-vpcs \
--region=REGION

Replace the following:

  • INSTANCE_NAME: the name of your Looker (Google Cloud core) instance.
  • REGION: the region in which your Looker (Google Cloud core) instance is hosted.

Northbound access to your instance

After the Looker (Google Cloud core) (Private Service Connect) instance is created, you can set up northbound access to allow your users to access the instance.

To access your instance from another VPC network, first follow the instructions for creating a Private Service Connect endpoint. Make sure that the network is allowed northbound access to your Looker (Google Cloud core) instance and follow these guidelines when creating the endpoint:

  • Set the Target service field (for the Google Cloud console) or the SERVICE_ATTACHMENT variable (if following Google Cloud CLI or API instructions) to the Looker service attachment URI, which you can find by checking the Details tab on the instance configuration page of the console or by running the following command:

    gcloud looker instances describe INSTANCE_NAME --region=REGION--format=json

    Replace the following:

    • INSTANCE_NAME: the name of your Looker (Google Cloud core) instance.
    • REGION: the region in which your Looker (Google Cloud core) instance is hosted.

  • You can use any subnet that is hosted in the same region as the Looker (Google Cloud core) instance.

  • Don't enable global access.

To access your instance from a hybrid networking environment, you can follow the instructions on the Northbound access to a Looker (Google Cloud core) instance using Private Service Connect documentation page to set up a custom domain and access the instance.

What's next