Chapter 2. Configuring a GCP project Before you can install OpenShift Container Platform, you must configure a Google Cloud Platform (GCP) project to host it. 2.1. Creating a GCP project To install OpenShift Container Platform, you must create a project in your Google Cloud Platform (GCP) account to host the cluster. Procedure Create a project to host your OpenShift Container Platform cluster. See Creating and Managing Projects in the GCP documentation. Important Your GCP project must use the Premium Network Service Tier if you are using installer-provisioned infrastructure. The Standard Network Service Tier is not supported for clusters installed using the installation program. The installation program configures internal load balancing for the api-int.<cluster_name>.<base_domain> URL; the Premium Tier is required for internal load balancing. 2.2. Enabling API services in GCP Your Google Cloud Platform (GCP) project requires access to several API services to complete OpenShift Container Platform installation. Prerequisites You created a project to host your cluster. Procedure Enable the following required API services in the project that hosts your cluster. You may also enable optional API services which are not required for installation. See Enabling services in the GCP documentation. Table 2.1. Required API services API service Console service name Compute Engine API compute.googleapis.com Cloud Resource Manager API cloudresourcemanager.googleapis.com Google DNS API dns.googleapis.com IAM Service Account Credentials API iamcredentials.googleapis.com Identity and Access Management (IAM) API iam.googleapis.com Service Usage API serviceusage.googleapis.com Table 2.2. Optional API services API service Console service name Google Cloud APIs cloudapis.googleapis.com Service Management API servicemanagement.googleapis.com Google Cloud Storage JSON API storage-api.googleapis.com Cloud Storage storage-component.googleapis.com 2.3. Configuring DNS for GCP To install OpenShift Container Platform, the Google Cloud Platform (GCP) account you use must have a dedicated public hosted zone in the same project that you host the OpenShift Container Platform cluster. This zone must be authoritative for the domain. The DNS service provides cluster DNS resolution and name lookup for external connections to the cluster. Procedure Identify your domain, or subdomain, and registrar. You can transfer an existing domain and registrar or obtain a new one through GCP or another source. Note If you purchase a new domain, it can take time for the relevant DNS changes to propagate. For more information about purchasing domains through Google, see Google Domains . Create a public hosted zone for your domain or subdomain in your GCP project. See Creating public zones in the GCP documentation. Use an appropriate root domain, such as openshiftcorp.com , or subdomain, such as clusters.openshiftcorp.com . Extract the new authoritative name servers from the hosted zone records. See Look up your Cloud DNS name servers in the GCP documentation. You typically have four name servers. Update the registrar records for the name servers that your domain uses. For example, if you registered your domain to Google Domains, see the following topic in the Google Domains Help: How to switch to custom name servers . If you migrated your root domain to Google Cloud DNS, migrate your DNS records. See Migrating to Cloud DNS in the GCP documentation. If you use a subdomain, follow your company's procedures to add its delegation records to the parent domain. This process might include a request to your company's IT department or the division that controls the root domain and DNS services for your company. 2.4. GCP account limits The OpenShift Container Platform cluster uses a number of Google Cloud Platform (GCP) components, but the default Quotas do not affect your ability to install a default OpenShift Container Platform cluster. A default cluster, which contains three compute and three control plane machines, uses the following resources. Note that some resources are required only during the bootstrap process and are removed after the cluster deploys. Table 2.3. GCP resources used in a default cluster Service Component Location Total resources required Resources removed after bootstrap Service account IAM Global 6 1 Firewall rules Compute Global 11 1 Forwarding rules Compute Global 2 0 In-use global IP addresses Compute Global 4 1 Health checks Compute Global 3 0 Images Compute Global 1 0 Networks Compute Global 2 0 Static IP addresses Compute Region 4 1 Routers Compute Global 1 0 Routes Compute Global 2 0 Subnetworks Compute Global 2 0 Target pools Compute Global 3 0 CPUs Compute Region 28 4 Persistent disk SSD (GB) Compute Region 896 128 Note If any of the quotas are insufficient during installation, the installation program displays an error that states both which quota was exceeded and the region. Be sure to consider your actual cluster size, planned cluster growth, and any usage from other clusters that are associated with your account. The CPU, static IP addresses, and persistent disk SSD (storage) quotas are the ones that are most likely to be insufficient. If you plan to deploy your cluster in one of the following regions, you will exceed the maximum storage quota and are likely to exceed the CPU quota limit: asia-east2 asia-northeast2 asia-south1 australia-southeast1 europe-north1 europe-west2 europe-west3 europe-west6 northamerica-northeast1 southamerica-east1 us-west2 You can increase resource quotas from the GCP console , but you might need to file a support ticket. Be sure to plan your cluster size early so that you can allow time to resolve the support ticket before you install your OpenShift Container Platform cluster. 2.5. Creating a service account in GCP OpenShift Container Platform requires a Google Cloud Platform (GCP) service account that provides authentication and authorization to access data in the Google APIs. If you do not have an existing IAM service account that contains the required roles in your project, you must create one. Prerequisites You created a project to host your cluster. Procedure Create a service account in the project that you use to host your OpenShift Container Platform cluster. See Creating a service account in the GCP documentation. Grant the service account the appropriate permissions. You can either grant the individual permissions that follow or assign the Owner role to it. See Granting roles to a service account for specific resources . Note While making the service account an owner of the project is the easiest way to gain the required permissions, it means that service account has complete control over the project. You must determine if the risk that comes from offering that power is acceptable. You can create the service account key in JSON format, or attach the service account to a GCP virtual machine. See Creating service account keys and Creating and enabling service accounts for instances in the GCP documentation. You must have a service account key or a virtual machine with an attached service account to create the cluster. Note If you use a virtual machine with an attached service account to create your cluster, you must set credentialsMode: Manual in the install-config.yaml file before installation. 2.5.1. Required GCP roles When you attach the Owner role to the service account that you create, you grant that service account all permissions, including those that are required to install OpenShift Container Platform. If the security policies for your organization require a more restrictive set of permissions, you can create a service account with the following permissions. Important If you configure the Cloud Credential Operator to operate in passthrough mode, you must use roles rather than granular permissions. If you deploy your cluster into an existing virtual private cloud (VPC), the service account does not require certain networking permissions, which are noted in the following lists: Required roles for the installation program Compute Admin IAM Security Admin Service Account Admin Service Account Key Admin Service Account User Storage Admin Required roles for creating network resources during installation DNS Administrator Required roles for using passthrough credentials mode Compute Load Balancer Admin IAM Role Viewer The roles are applied to the service accounts that the control plane and compute machines use: Table 2.4. GCP service account permissions Account Roles Control Plane roles/compute.instanceAdmin roles/compute.networkAdmin roles/compute.securityAdmin roles/storage.admin roles/iam.serviceAccountUser Compute roles/compute.viewer roles/storage.admin 2.5.2. Required GCP permissions for installer-provisioned infrastructure When you attach the Owner role to the service account that you create, you grant that service account all permissions, including those that are required to install OpenShift Container Platform. If the security policies for your organization require a more restrictive set of permissions, you can create custom roles with the necessary permissions. The following permissions are required for the installer-provisioned infrastructure for creating and deleting the OpenShift Container Platform cluster. Important If you configure the Cloud Credential Operator to operate in passthrough mode, you must use roles rather than granular permissions. For more information, see "Required roles for using passthrough credentials mode" in the "Required GCP roles" section. Example 2.1. Required permissions for creating network resources compute.addresses.create compute.addresses.createInternal compute.addresses.delete compute.addresses.get compute.addresses.list compute.addresses.use compute.addresses.useInternal compute.firewalls.create compute.firewalls.delete compute.firewalls.get compute.firewalls.list compute.forwardingRules.create compute.forwardingRules.get compute.forwardingRules.list compute.forwardingRules.setLabels compute.networks.create compute.networks.get compute.networks.list compute.networks.updatePolicy compute.routers.create compute.routers.get compute.routers.list compute.routers.update compute.routes.list compute.subnetworks.create compute.subnetworks.get compute.subnetworks.list compute.subnetworks.use compute.subnetworks.useExternalIp Example 2.2. Required permissions for creating load balancer resources compute.regionBackendServices.create compute.regionBackendServices.get compute.regionBackendServices.list compute.regionBackendServices.update compute.regionBackendServices.use compute.targetPools.addInstance compute.targetPools.create compute.targetPools.get compute.targetPools.list compute.targetPools.removeInstance compute.targetPools.use Example 2.3. Required permissions for creating DNS resources dns.changes.create dns.changes.get dns.managedZones.create dns.managedZones.get dns.managedZones.list dns.networks.bindPrivateDNSZone dns.resourceRecordSets.create dns.resourceRecordSets.list Example 2.4. Required permissions for creating Service Account resources iam.serviceAccountKeys.create iam.serviceAccountKeys.delete iam.serviceAccountKeys.get iam.serviceAccountKeys.list iam.serviceAccounts.actAs iam.serviceAccounts.create iam.serviceAccounts.delete iam.serviceAccounts.get iam.serviceAccounts.list resourcemanager.projects.get resourcemanager.projects.getIamPolicy resourcemanager.projects.setIamPolicy Example 2.5. Required permissions for creating compute resources compute.disks.create compute.disks.get compute.disks.list compute.disks.setLabels compute.instanceGroups.create compute.instanceGroups.delete compute.instanceGroups.get compute.instanceGroups.list compute.instanceGroups.update compute.instanceGroups.use compute.instances.create compute.instances.delete compute.instances.get compute.instances.list compute.instances.setLabels compute.instances.setMetadata compute.instances.setServiceAccount compute.instances.setTags compute.instances.use compute.machineTypes.get compute.machineTypes.list Example 2.6. Required for creating storage resources storage.buckets.create storage.buckets.delete storage.buckets.get storage.buckets.list storage.objects.create storage.objects.delete storage.objects.get storage.objects.list Example 2.7. Required permissions for creating health check resources compute.healthChecks.create compute.healthChecks.get compute.healthChecks.list compute.healthChecks.useReadOnly compute.httpHealthChecks.create compute.httpHealthChecks.get compute.httpHealthChecks.list compute.httpHealthChecks.useReadOnly Example 2.8. Required permissions to get GCP zone and region related information compute.globalOperations.get compute.regionOperations.get compute.regions.list compute.zoneOperations.get compute.zones.get compute.zones.list Example 2.9. Required permissions for checking services and quotas monitoring.timeSeries.list serviceusage.quotas.get serviceusage.services.list Example 2.10. Required IAM permissions for installation iam.roles.get Example 2.11. Optional Images permissions for installation compute.images.list Example 2.12. Optional permission for running gather bootstrap compute.instances.getSerialPortOutput Example 2.13. Required permissions for deleting network resources compute.addresses.delete compute.addresses.deleteInternal compute.addresses.list compute.firewalls.delete compute.firewalls.list compute.forwardingRules.delete compute.forwardingRules.list compute.networks.delete compute.networks.list compute.networks.updatePolicy compute.routers.delete compute.routers.list compute.routes.list compute.subnetworks.delete compute.subnetworks.list Example 2.14. Required permissions for deleting load balancer resources compute.regionBackendServices.delete compute.regionBackendServices.list compute.targetPools.delete compute.targetPools.list Example 2.15. Required permissions for deleting DNS resources dns.changes.create dns.managedZones.delete dns.managedZones.get dns.managedZones.list dns.resourceRecordSets.delete dns.resourceRecordSets.list Example 2.16. Required permissions for deleting Service Account resources iam.serviceAccounts.delete iam.serviceAccounts.get iam.serviceAccounts.list resourcemanager.projects.getIamPolicy resourcemanager.projects.setIamPolicy Example 2.17. Required permissions for deleting compute resources compute.disks.delete compute.disks.list compute.instanceGroups.delete compute.instanceGroups.list compute.instances.delete compute.instances.list compute.instances.stop compute.machineTypes.list Example 2.18. Required for deleting storage resources storage.buckets.delete storage.buckets.getIamPolicy storage.buckets.list storage.objects.delete storage.objects.list Example 2.19. Required permissions for deleting health check resources compute.healthChecks.delete compute.healthChecks.list compute.httpHealthChecks.delete compute.httpHealthChecks.list Example 2.20. Required Images permissions for deletion compute.images.list 2.5.3. Required GCP permissions for shared VPC installations When you are installing a cluster to a shared VPC , you must configure the service account for both the host project and the service project. If you are not installing to a shared VPC, you can skip this section. You must apply the minimum roles required for a standard installation as listed above, to the service project. Important You can use granular permissions for a Cloud Credential Operator that operates in either manual or mint credentials mode. You cannot use granular permissions in passthrough credentials mode. Ensure that the host project applies one of the following configurations to the service account: Example 2.21. Required permissions for creating firewalls in the host project projects/<host-project>/roles/dns.networks.bindPrivateDNSZone roles/compute.networkAdmin roles/compute.securityAdmin Example 2.22. Required minimal permissions projects/<host-project>/roles/dns.networks.bindPrivateDNSZone roles/compute.networkUser 2.6. Supported GCP regions You can deploy an OpenShift Container Platform cluster to the following Google Cloud Platform (GCP) regions: asia-east1 (Changhua County, Taiwan) asia-east2 (Hong Kong) asia-northeast1 (Tokyo, Japan) asia-northeast2 (Osaka, Japan) asia-northeast3 (Seoul, South Korea) asia-south1 (Mumbai, India) asia-south2 (Delhi, India) asia-southeast1 (Jurong West, Singapore) asia-southeast2 (Jakarta, Indonesia) australia-southeast1 (Sydney, Australia) australia-southeast2 (Melbourne, Australia) europe-central2 (Warsaw, Poland) europe-north1 (Hamina, Finland) europe-southwest1 (Madrid, Spain) europe-west1 (St. Ghislain, Belgium) europe-west2 (London, England, UK) europe-west3 (Frankfurt, Germany) europe-west4 (Eemshaven, Netherlands) europe-west6 (Zurich, Switzerland) europe-west8 (Milan, Italy) europe-west9 (Paris, France) europe-west12 (Turin, Italy) me-central1 (Doha, Qatar, Middle East) me-west1 (Tel Aviv, Israel) northamerica-northeast1 (Montreal, Quebec, Canada) northamerica-northeast2 (Toronto, Ontario, Canada) southamerica-east1 (Sao Paulo, Brazil) southamerica-west1 (Santiago, Chile) us-central1 (Council Bluffs, Iowa, USA) us-east1 (Moncks Corner, South Carolina, USA) us-east4 (Ashburn, Northern Virginia, USA) us-east5 (Columbus, Ohio) us-south1 (Dallas, Texas) us-west1 (The Dalles, Oregon, USA) us-west2 (Los Angeles, California, USA) us-west3 (Salt Lake City, Utah, USA) us-west4 (Las Vegas, Nevada, USA) Note To determine which machine type instances are available by region and zone, see the Google documentation . 2.7. steps Install an OpenShift Container Platform cluster on GCP. You can install a customized cluster or quickly install a cluster with default options.

Commands: