In OpenShift Container Platform version 4.2, you can install a cluster on Google Cloud Platform (GCP) by using infrastructure that you provide.

The steps for performing a user-provided infrastructure install are outlined here. Several Deployment Manager templates are provided to assist in completing these steps or to help model your own. You are also free to create the required resources through other methods; the templates are just an example.

Configuring your GCP project

Before you can install OpenShift Container Platform, you must configure a Google Cloud Platform (GCP) project to host it.

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

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. See Enabling services in the GCP documentation.

    Table 1. Required API services
    API service Console service name

    Cloud Deployment Manager V2 API

    deploymentmanager.googleapis.com

    Compute Engine API

    compute.googleapis.com

    Google Cloud APIs

    cloudapis.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 Management API

    servicemanagement.googleapis.com

    Service Usage API

    serviceusage.googleapis.com

    Google Cloud Storage JSON API

    storage-api.googleapis.com

    Cloud Storage

    storage-component.googleapis.com

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
  1. 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.

    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.

  2. 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.

  3. 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.

  4. 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.

  5. If you use a subdomain, follow your company’s procedures to add its delegation records to the parent domain.

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. GCP resources used in a default cluster
Service Component Location Total resources required Resources removed after bootstrap

Service account

IAM

Global

5

0

Firewall Rules

Networking

Global

35

1

Forwarding Rules

Compute

Global

2

0

Health checks

Compute

Global

2

0

Images

Compute

Global

1

0

Networks

Networking

Global

1

0

Routers

Networking

Global

1

0

Routes

Networking

Global

3

0

Subnetworks

Compute

Global

2

0

Target Pools

Networking

Global

2

0

Creating a service account in GCP

OpenShift Container Platform requires a Google Cloud Platform (GCP) service account.

Prerequisites
  • You created a project to host your cluster.

Procedure
  1. Create a new service account in the project that you use to host your OpenShift Container Platform cluster. See Creating a service account in the GCP documentation.

  2. 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.

  3. Create the service account key. See Creating service account keys in the GCP documentation.

    The service account key is required to create a cluster.

Required GCP permissions

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. To deploy an OpenShift Container Platform cluster, the service account requires the following permissions:

Required roles for the installation program
  • Compute Admin

  • DNS Administrator

  • Security Admin

  • Service Account Admin

  • Service Account User

  • Storage Admin

Required roles for user-provisioned GCP infrastructure
  • Deployment Manager Editor

  • Service Account Key Admin

Optional roles

For the cluster to create new limited credentials for its Operators, add the following role:

  • Service Account Key Admin

The roles are applied to the service accounts that the control plane and compute machines use:

Table 3. 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

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-south1 (Mumbai, India)

  • asia-southeast1 (Jurong West, Singapore)

  • australia-southeast1 (Sydney, Australia)

  • europe-north1 (Hamina, Finland)

  • europe-west1 (St. Ghislain, Belgium)

  • europe-west2 (London, England, UK)

  • europe-west3 (Frankfurt, Germany)

  • europe-west4 (Eemshaven, Netherlands)

  • europe-west6 (Zürich, Switzerland)

  • northamerica-northeast1 (Montréal, Québec, Canada)

  • southamerica-east1 (São Paulo, Brazil)

  • us-central1 (Council Bluffs, Iowa, USA)

  • us-east1 (Moncks Corner, South Carolina, USA)

  • us-east4 (Ashburn, Northern Virginia, USA)

  • us-west1 (The Dalles, Oregon, USA)

  • us-west2 (Los Angeles, California, USA)

Installing and configuring CLI tools for GCP

To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must install and configure the CLI tools for GCP.

Prerequisites
  • You created a project to host your cluster.

  • You created a service account and granted it the required permissions.

Procedure
  1. Install the following binaries in $PATH:

    • gcloud

    • gsutil

    See Install the latest Cloud SDK version in the GCP documentation.

  2. Authenticate using the gcloud tool with your configured service account.

Creating the installation files for GCP

To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must generate the files that the installation program needs to deploy your cluster and modify them so that the cluster creates only the machines that it will use. You generate and customize the install-config.yaml file, Kubernetes manifests, and Ignition config files.

Creating the installation configuration file

You can customize your installation of OpenShift Container Platform on Google Cloud Platform (GCP).

Prerequisites
  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

Procedure
  1. Create the install-config.yaml file.

    1. Run the following command:

      $ ./openshift-install create install-config --dir=<installation_directory> (1)
      1 For <installation_directory>, specify the directory name to store the files that the installation program creates.

      Specify an empty directory. Some installation assets, like bootstrap X.509 certificates have short expiration intervals, so you must not reuse an installation directory. If you want to reuse individual files from another cluster installation, you can copy them into your directory. However, the file names for the installation assets might change between releases. Use caution when copying installation files from an earlier OpenShift Container Platform version.

    2. At the prompts, provide the configuration details for your cloud:

      1. Optional: Select an SSH key to use to access your cluster machines.

        For production OpenShift Container Platform clusters on which you want to perform installation debugging or disaster recovery on, specify an SSH key that your ssh-agent process uses.

      2. Select gcp as the platform to target.

      3. If you have not configured the service account key for your GCP account on your computer, you must obtain it from GCP and paste the contents of the file or enter the absolute path to the file.

      4. Select the project ID to provision the cluster in. The default value is specified by the service account that you configured.

      5. Select the region to deploy the cluster to.

      6. Select the base domain to deploy the cluster to. The base domain corresponds to the public DNS zone that you created for your cluster.

      7. Enter a descriptive name for your cluster. If you provide a name that is longer than 6 characters, only the first 6 characters will be used in the infrastructure ID that is generated from the cluster name.

      8. Paste the pull secret that you obtained from the Pull Secret page on the Red Hat OpenShift Cluster Manager site.

    3. Optional: If you do not want the cluster to provision compute machines, empty the compute pool by editing the resulting install-config.yaml file to set replicas to 0 for the compute pool:

      compute:
      - hyperthreading: Enabled
        name: worker
        platform: {}
        replicas: 0 (1)
      1 Set to 0.
  2. Modify the install-config.yaml file. You can find more information about the available parameters in the Installation configuration parameters section.

  3. Back up the install-config.yaml file so that you can use it to install multiple clusters.

    The install-config.yaml file is consumed during the installation process. If you want to reuse the file, you must back it up now.

Configuring the cluster-wide proxy during installation

Production environments can deny direct access to the Internet and instead have an HTTP or HTTPS proxy available. You can configure a new OpenShift Container Platform cluster to use a proxy by configuring the proxy settings in the install-config.yaml file.

Prerequisites
  • An existing install-config.yaml file.

  • Review the sites that your cluster requires access to and determine whether any need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. Add sites to the Proxy object’s spec.noProxy field to bypass the proxy if necessary.

    The Proxy object’s status.noProxy field is populated by default with the instance metadata endpoint (169.254.169.254) and with the values of the networking.machineCIDR, networking.clusterNetwork.cidr, and networking.serviceNetwork fields from your installation configuration.

Procedure
  1. Edit your install-config.yaml file and add the proxy settings. For example:

    apiVersion: v1
    baseDomain: my.domain.com
    proxy:
      httpProxy: http://<username>:<pswd>@<ip>:<port> (1)
      httpsProxy: http://<username>:<pswd>@<ip>:<port> (2)
      noProxy: example.com (3)
    additionalTrustBundle: | (4)
        -----BEGIN CERTIFICATE-----
        <MY_TRUSTED_CA_CERT>
        -----END CERTIFICATE-----
    ...
    1 A proxy URL to use for creating HTTP connections outside the cluster. The URL scheme must be http.
    2 A proxy URL to use for creating HTTPS connections outside the cluster. If this field is not specified, then httpProxy is used for both HTTP and HTTPS connections. The URL scheme must be http; https is currently not supported.
    3 A comma-separated list of destination domain names, domains, IP addresses, or other network CIDRs to exclude proxying. Preface a domain with . to include all subdomains of that domain. Use * to bypass proxy for all destinations.
    4 If provided, the installation program generates a ConfigMap that is named user-ca-bundle in the openshift-config namespace that contains one or more additional CA certificates that are required for proxying HTTPS connections. The Cluster Network Operator then creates a trusted-ca-bundle ConfigMap that merges these contents with the Red Hat Enterprise Linux CoreOS (RHCOS) trust bundle, and this ConfigMap is referenced in the Proxy object’s trustedCA field. The additionalTrustBundle field is required unless the proxy’s identity certificate is signed by an authority from the RHCOS trust bundle.

    The installation program does not support the proxy readinessEndpoints field.

  2. Save the file and reference it when installing OpenShift Container Platform.

The installation program creates a cluster-wide proxy that is named cluster that uses the proxy settings in the provided install-config.yaml file. If no proxy settings are provided, a cluster Proxy object is still created, but it will have a nil spec.

Only the Proxy object named cluster is supported, and no additional proxies can be created.

Creating the Kubernetes manifest and Ignition config files

Because you must modify some cluster definition files and manually start the cluster machines, you must generate the Kubernetes manifest and Ignition config files that the cluster needs to make its machines.

The Ignition config files that the installation program generates contain certificates that expire after 24 hours. You must complete your cluster installation and keep the cluster running for 24 hours in a non-degraded state to ensure that the first certificate rotation has finished.

Prerequisites
  • Obtain the OpenShift Container Platform installation program.

  • Create the install-config.yaml installation configuration file.

Procedure
  1. Generate the Kubernetes manifests for the cluster:

    $ ./openshift-install create manifests --dir=<installation_directory> (1)
    
    WARNING There are no compute nodes specified. The cluster will not fully initialize without compute nodes.
    INFO Consuming "Install Config" from target directory
    1 For <installation_directory>, specify the installation directory that contains the install-config.yaml file you created.

    Because you create your own compute machines later in the installation process, you can safely ignore this warning.

  2. Remove the Kubernetes manifest files that define the control plane machines:

    $ rm -f openshift/99_openshift-cluster-api_master-machines-*.yaml

    By removing these files, you prevent the cluster from automatically generating control plane machines.

  3. Optional: If you do not want the cluster to provision compute machines, remove the Kubernetes manifest files that define the worker machines:

    $ rm -f openshift/99_openshift-cluster-api_worker-machineset-*.yaml

    Because you create and manage the worker machines yourself, you do not need to initialize these machines.

  4. Modify the manifests/cluster-scheduler-02-config.yml Kubernetes manifest file to prevent Pods from being scheduled on the control plane machines:

    1. Open the manifests/cluster-scheduler-02-config.yml file.

    2. Locate the mastersSchedulable parameter and set its value to False.

    3. Save and exit the file.

    Currently, due to a Kubernetes limitation, router Pods running on control plane machines will not be reachable by the ingress load balancer. This step might not be required in a future minor version of OpenShift Container Platform.

  5. Optional: If you do not want the Ingress Operator to create DNS records on your behalf, remove the privateZone and publicZone sections from the manifests/cluster-dns-02-config.yml DNS configuration file:

    apiVersion: config.openshift.io/v1
    kind: DNS
    metadata:
      creationTimestamp: null
      name: cluster
    spec:
      baseDomain: example.openshift.com
      privateZone: (1)
        id: mycluster-100419-private-zone
      publicZone: (1)
        id: example.openshift.com
    status: {}
    1 Remove these sections completely.

    If you do so, you must add ingress DNS records manually in a later step.

  6. Obtain the Ignition config files:

    $ ./openshift-install create ignition-configs --dir=<installation_directory> (1)
    1 For <installation_directory>, specify the same installation directory.

    The following files are generated in the directory:

    .
    ├── auth
    │   ├── kubeadmin-password
    │   └── kubeconfig
    ├── bootstrap.ign
    ├── master.ign
    ├── metadata.json
    └── worker.ign

Exporting common variables

Extracting the infrastructure name

The Ignition configs contain a unique cluster identifier that you can use to uniquely identify your cluster in Google Cloud Platform (GCP). The provided Deployment Manager templates contain references to this infrastructure name, so you must extract it.

Prerequisites
  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

  • Generate the Ignition config files for your cluster.

  • Install the jq package.

Procedure
  • To extract and view the infrastructure name from the Ignition config file metadata, run the following command:

    $ jq -r .infraID /<installation_directory>/metadata.json (1)
    openshift-vw9j6 (2)
    1 For <installation_directory>, specify the path to the directory that you stored the installation files in.
    2 The output of this command is your cluster name and a random string.

Exporting common variables for Deployment Manager templates

You must export a common set of variables that are used with the provided Deployment Manager templates used to assist in completing a user-provided infrastructure install on Google Cloud Platform (GCP).

Specific Deployment Manager templates can also require additional exported variables, which are detailed in their related procedures.

Prerequisites
  • Obtain the OpenShift Container Platform installation program and the pull secret for your cluster.

  • Generate the Ignition config files for your cluster.

  • Install the jq package.

Procedure
  • Export the following common variables to be used by the provided Deployment Manager templates:

    $ export BASE_DOMAIN='<base_domain>'
    $ export BASE_DOMAIN_ZONE_NAME='<base_domain_zone_name>'
    $ export NETWORK_CIDR='10.0.0.0/16'
    $ export MASTER_SUBNET_CIDR='10.0.0.0/19'
    $ export WORKER_SUBNET_CIDR='10.0.32.0/19'
    
    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig (1)
    $ export CLUSTER_NAME=`jq -r .clusterName <installation_directory>/metadata.json`
    $ export INFRA_ID=`jq -r .infraID <installation_directory>/metadata.json`
    $ export PROJECT_NAME=`jq -r .gcp.projectID <installation_directory>/metadata.json`
    $ export REGION=`jq -r .gcp.region <installation_directory>/metadata.json`
    1 For <installation_directory>, specify the path to the directory that you stored the installation files in.

Creating a VPC in GCP

You must create a VPC in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. You can customize the VPC to meet your requirements. One way to create the VPC is to modify the provided Deployment Manager template.

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites
  • Configure a GCP account.

  • Generate the Ignition config files for your cluster.

Procedure
  1. Copy the template from the Deployment Manager template for the VPC section of this topic and save it as 01_vpc.py on your computer. This template describes the VPC that your cluster requires.

  2. Create a 01_vpc.yaml resource definition file:

    $ cat <<EOF >01_vpc.yaml
    imports:
    - path: 01_vpc.py
    
    resources:
    - name: cluster-vpc
     type: 01_vpc.py
     properties:
       infra_id: '${INFRA_ID}' (1)
       region: '${REGION}' (2)
    
       master_subnet_cidr: '${MASTER_SUBNET_CIDR}' (3)
       worker_subnet_cidr: '${WORKER_SUBNET_CIDR}' (4)
    EOF
    1 infra_id is the INFRA_ID infrastructure name from the extraction step.
    2 region is the region to deploy the cluster into, for example us-east1.
    3 master_subnet_cidr is the CIDR for the master subnet, for example 10.0.0.0/19.
    4 worker_subnet_cidr is the CIDR for the worker subnet, for example 10.0.32.0/19.
  3. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-vpc --config 01_vpc.yaml

Deployment Manager template for the VPC

You can use the following Deployment Manager template to deploy the VPC that you need for your OpenShift Container Platform cluster:

01_vpc.py Deployment Manager template
def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-network',
        'type': 'compute.v1.network',
        'properties': {
            'region': context.properties['region'],
            'autoCreateSubnetworks': False
        }
    }, {
        'name': context.properties['infra_id'] + '-master-subnet',
        'type': 'compute.v1.subnetwork',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'ipCidrRange': context.properties['master_subnet_cidr']
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-subnet',
        'type': 'compute.v1.subnetwork',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'ipCidrRange': context.properties['worker_subnet_cidr']
        }
    }, {
        'name': context.properties['infra_id'] + '-master-nat-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-nat-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-router',
        'type': 'compute.v1.router',
        'properties': {
            'region': context.properties['region'],
            'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
            'nats': [{
                'name': context.properties['infra_id'] + '-nat-master',
                'natIpAllocateOption': 'MANUAL_ONLY',
                'natIps': ['$(ref.' + context.properties['infra_id'] + '-master-nat-ip.selfLink)'],
                'minPortsPerVm': 7168,
                'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
                'subnetworks': [{
                    'name': '$(ref.' + context.properties['infra_id'] + '-master-subnet.selfLink)',
                    'sourceIpRangesToNat': ['ALL_IP_RANGES']
                }]
            }, {
                'name': context.properties['infra_id'] + '-nat-worker',
                'natIpAllocateOption': 'MANUAL_ONLY',
                'natIps': ['$(ref.' + context.properties['infra_id'] + '-worker-nat-ip.selfLink)'],
                'minPortsPerVm': 128,
                'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
                'subnetworks': [{
                    'name': '$(ref.' + context.properties['infra_id'] + '-worker-subnet.selfLink)',
                    'sourceIpRangesToNat': ['ALL_IP_RANGES']
                }]
            }]
        }
    }]

    return {'resources': resources}

Creating networking and load balancing components in GCP

You must configure networking and load balancing in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites
  • Configure a GCP account.

  • Generate the Ignition config files for your cluster.

  • Create and configure a VPC and associated subnets in GCP.

Procedure
  1. Copy the template from the Deployment Manager template for the network and load balancers section of this topic and save it as 02_infra.py on your computer. This template describes the networking and load balancing objects that your cluster requires.

  2. Export the following variable required by the resource definition:

    $ export CLUSTER_NETWORK=`gcloud compute networks describe ${INFRA_ID}-network --format json | jq -r .selfLink`
  3. Create a 02_infra.yaml resource definition file:

    $ cat <<EOF >02_infra.yaml
    imports:
    - path: 02_infra.py
    
    resources:
    - name: cluster-infra
      type: 02_infra.py
      properties:
        infra_id: '${INFRA_ID}' (1)
        region: '${REGION}' (2)
    
        cluster_domain: '${CLUSTER_NAME}.${BASE_DOMAIN}' (3)
        cluster_network: '${CLUSTER_NETWORK}' (4)
    EOF
    1 infra_id is the INFRA_ID infrastructure name from the extraction step.
    2 region is the region to deploy the cluster into, for example us-east1.
    3 cluster_domain is the domain for the cluster, for example openshift.example.com.
    4 cluster_network is the selfLink URL to the cluster network.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-infra --config 02_infra.yaml
  5. The templates do not create DNS entries due to limitations of Deployment Manager, so you must create them manually:

    1. Export the following variable:

      $ export CLUSTER_IP=`gcloud compute addresses describe ${INFRA_ID}-cluster-public-ip --region=${REGION} --format json | jq -r .address`
    2. Add external DNS entries:

      $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
      $ gcloud dns record-sets transaction start --zone ${BASE_DOMAIN_ZONE_NAME}
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${BASE_DOMAIN_ZONE_NAME}
      $ gcloud dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME}
    3. Add internal DNS entries:

      $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
      $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction add ${CLUSTER_IP} --name api-int.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
      $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone

Deployment Manager template for the network and load balancers

You can use the following Deployment Manager template to deploy the networking objects and load balancers that you need for your OpenShift Container Platform cluster:

02_infra.py Deployment Manager template
def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-cluster-public-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-api-http-health-check',
        'type': 'compute.v1.httpHealthCheck',
        'properties': {
            'port': 6080,
            'requestPath': '/readyz'
        }
    }, {
        'name': context.properties['infra_id'] + '-api-target-pool',
        'type': 'compute.v1.targetPool',
        'properties': {
            'region': context.properties['region'],
            'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-api-http-health-check.selfLink)'],
            'instances': []
        }
    }, {
        'name': context.properties['infra_id'] + '-api-forwarding-rule',
        'type': 'compute.v1.forwardingRule',
        'properties': {
            'region': context.properties['region'],
            'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-public-ip.selfLink)',
            'target': '$(ref.' + context.properties['infra_id'] + '-api-target-pool.selfLink)',
            'portRange': '6443'
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-http-health-check',
        'type': 'compute.v1.httpHealthCheck',
        'properties': {
            'port': 22624,
            'requestPath': '/healthz'
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-target-pool',
        'type': 'compute.v1.targetPool',
        'properties': {
            'region': context.properties['region'],
            'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-ign-http-health-check.selfLink)'],
            'instances': []
        }
    }, {
        'name': context.properties['infra_id'] + '-ign-forwarding-rule',
        'type': 'compute.v1.forwardingRule',
        'properties': {
            'region': context.properties['region'],
            'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-public-ip.selfLink)',
            'target': '$(ref.' + context.properties['infra_id'] + '-ign-target-pool.selfLink)',
            'portRange': '22623'
        }
    }, {
        'name': context.properties['infra_id'] + '-private-zone',
        'type': 'dns.v1.managedZone',
        'properties': {
            'description': '',
            'dnsName': context.properties['cluster_domain'] + '.',
            'visibility': 'private',
            'privateVisibilityConfig': {
                'networks': [{
                    'networkUrl': context.properties['cluster_network']
                }]
            }
        }
    }]

    return {'resources': resources}

Creating firewall rules and IAM roles in GCP

You must create security groups and roles in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create these components is to modify the provided Deployment Manager template.

If you do not use the provided Deployment Manager template to create your GCP infrastructure, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites
  • Configure a GCP account.

  • Generate the Ignition config files for your cluster.

  • Create and configure a VPC and associated subnets in GCP.

Procedure
  1. Copy the template from the Deployment Manager template for firewall rules and IAM roles section of this topic and save it as 03_security.py on your computer. This template describes the security groups and roles that your cluster requires.

  2. Export the following variables required by the resource definition:

    $ export MASTER_NAT_IP=`gcloud compute addresses describe ${INFRA_ID}-master-nat-ip --region ${REGION} --format json | jq -r .address`
    $ export WORKER_NAT_IP=`gcloud compute addresses describe ${INFRA_ID}-worker-nat-ip --region ${REGION} --format json | jq -r .address`
  3. Create a 03_security.yaml resource definition file:

    $ cat <<EOF >03_security.yaml
    imports:
    - path: 03_security.py
    
    resources:
    - name: cluster-security
      type: 03_security.py
      properties:
        infra_id: '${INFRA_ID}' (1)
        region: '${REGION}' (2)
    
        cluster_network: '${CLUSTER_NETWORK}' (3)
        network_cidr: '${NETWORK_CIDR}' (4)
        master_nat_ip: '${MASTER_NAT_IP}' (5)
        worker_nat_ip: '${WORKER_NAT_IP}' (6)
    EOF
    1 infra_id is the INFRA_ID infrastructure name from the extraction step.
    2 region is the region to deploy the cluster into, for example us-east1.
    3 cluster_network is the selfLink URL to the cluster network.
    4 network_cidr is the CIDR of the VPC network, for example 10.0.0.0/16.
    5 master_nat_ip is the IP address of the master NAT, for example 34.94.100.1.
    6 worker_nat_ip is the IP address of the worker NAT, for example 34.94.200.1.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-security --config 03_security.yaml
  5. The templates do not create the policy bindings due to limitations of Deployment Manager, so you must create them manually:

    $ export MASTER_SA=${INFRA_ID}-m@${PROJECT_NAME}.iam.gserviceaccount.com
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.instanceAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.networkAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/compute.securityAdmin"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/iam.serviceAccountUser"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SA}" --role "roles/storage.admin"
    
    $ export WORKER_SA=${INFRA_ID}-w@${PROJECT_NAME}.iam.gserviceaccount.com
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SA}" --role "roles/compute.viewer"
    $ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SA}" --role "roles/storage.admin"
  6. Create a service account key and store it locally for later use:

    $ gcloud iam service-accounts keys create service-account-key.json --iam-account=${MASTER_SA}

Deployment Manager template for firewall rules and IAM roles

You can use the following Deployment Manager template to deploy the security objects that you need for your OpenShift Container Platform cluster:

03_security.py Deployment Manager template
def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-api',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['6443']
            }],
            'sourceRanges':  ['0.0.0.0/0'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-mcs',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['22623']
            }],
            'sourceRanges':  [
                context.properties['network_cidr'],
                context.properties['master_nat_ip'],
                context.properties['worker_nat_ip']
            ],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-health-checks',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['6080', '22624']
            }],
            'sourceRanges':  ['35.191.0.0/16', '209.85.152.0/22', '209.85.204.0/22'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-etcd',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['2379-2380']
            }],
            'sourceTags': [context.properties['infra_id'] + '-master'],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-control-plane',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['10257']
            },{
                'IPProtocol': 'tcp',
                'ports': ['10259']
            }],
            'sourceTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ],
            'targetTags': [context.properties['infra_id'] + '-master']
        }
    }, {
        'name': context.properties['infra_id'] + '-internal-network',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'icmp'
            },{
                'IPProtocol': 'tcp',
                'ports': ['22']
            }],
            'sourceRanges':  [context.properties['network_cidr']],
            'targetTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ]
        }
    }, {
        'name': context.properties['infra_id'] + '-internal-cluster',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'udp',
                'ports': ['4789', '6081']
            },{
                'IPProtocol': 'tcp',
                'ports': ['9000-9999']
            },{
                'IPProtocol': 'udp',
                'ports': ['9000-9999']
            },{
                'IPProtocol': 'tcp',
                'ports': ['10250']
            },{
                'IPProtocol': 'tcp',
                'ports': ['30000-32767']
            },{
                'IPProtocol': 'udp',
                'ports': ['30000-32767']
            }],
            'sourceTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ],
            'targetTags': [
                context.properties['infra_id'] + '-master',
                context.properties['infra_id'] + '-worker'
            ]
        }
    }, {
        'name': context.properties['infra_id'] + '-master-node-sa',
        'type': 'iam.v1.serviceAccount',
        'properties': {
            'accountId': context.properties['infra_id'] + '-m',
            'displayName': context.properties['infra_id'] + '-master-node'
        }
    }, {
        'name': context.properties['infra_id'] + '-worker-node-sa',
        'type': 'iam.v1.serviceAccount',
        'properties': {
            'accountId': context.properties['infra_id'] + '-w',
            'displayName': context.properties['infra_id'] + '-worker-node'
        }
    }]

    return {'resources': resources}

Creating the RHCOS cluster image for the GCP infrastructure

You must use a valid Red Hat Enterprise Linux CoreOS (RHCOS) image for Google Cloud Platform (GCP) for your OpenShift Container Platform nodes.

Procedure
  1. Obtain the RHCOS image from the Product Downloads page on the Red Hat customer portal or the RHCOS image mirror page.

    The RHCOS images might not change with every release of OpenShift Container Platform. You must download an image with the highest version that is less than or equal to the OpenShift Container Platform version that you install. Use the image version that matches your OpenShift Container Platform version if it is available.

    The file name contains the OpenShift Container Platform version number in the format rhcos-<version>-gcp.tar.

  2. Export the following variable:

    $ export IMAGE_SOURCE=<downloaded_image_file_path>
  3. Create the cluster image:

    $ gcloud compute images create "${INFRA_ID}-rhcos-image" \
        --source-uri="${IMAGE_SOURCE}"

Creating the bootstrap machine in GCP

You must create the bootstrap machine in Google Cloud Platform (GCP) to use during OpenShift Container Platform cluster initialization. One way to create this machine is to modify the provided Deployment Manager template.

If you do not use the provided Deployment Manager template to create your bootstrap machine, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites
  • Configure a GCP account.

  • Generate the Ignition config files for your cluster.

  • Create and configure a VPC and assocated subnets in GCP.

  • Create and configure networking and load balancers in GCP.

  • Create control plane and compute roles.

Procedure
  1. Copy the template from the Deployment Manager template for the bootstrap machine section of this topic and save it as 04_bootstrap.py on your computer. This template describes the bootstrap machine that your cluster requires.

  2. Export the following variables required by the resource definition:

    $ export CONTROL_SUBNET=`gcloud compute networks subnets describe ${INFRA_ID}-master-subnet --region=${REGION} --format json | jq -r .selfLink`
    $ export CLUSTER_IMAGE=`gcloud compute images describe ${INFRA_ID}-rhcos-image --format json | jq -r .selfLink`
    $ export ZONE_0=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[0] | cut -d "/" -f9`
    $ export ZONE_1=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[1] | cut -d "/" -f9`
    $ export ZONE_2=`gcloud compute regions describe ${REGION} --format=json | jq -r .zones[2] | cut -d "/" -f9`
  3. Create a bucket and upload the bootstrap.ign file:

    $ gsutil mb gs://${INFRA_ID}-bootstrap-ignition
    $ gsutil cp bootstrap.ign gs://${INFRA_ID}-bootstrap-ignition/
  4. Create a signed URL for the bootstrap instance to use to access the Ignition config. Export the URL from the output as a variable:

    $ export BOOTSTRAP_IGN=`gsutil signurl -d 1h service-account-key.json \
        gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign | grep "^gs:" | awk '{print $5}'`
  5. Create a 04_bootstrap.yaml resource definition file:

    $ cat <<EOF >04_bootstrap.yaml
    imports:
    - path: 04_bootstrap.py
    
    resources:
    - name: cluster-bootstrap
      type: 04_bootstrap.py
      properties:
        infra_id: '${INFRA_ID}' (1)
        region: '${REGION}' (2)
        zone: '${ZONE_0}' (3)
    
        cluster_network: '${CLUSTER_NETWORK}' (4)
        control_subnet: '${CONTROL_SUBNET}' (5)
        image: '${CLUSTER_IMAGE}' (6)
        machine_type: 'n1-standard-4' (7)
        root_volume_size: '128' (8)
    
        bootstrap_ign: '${BOOTSTRAP_IGN}' (9)
    EOF
    1 infra_id is the INFRA_ID infrastructure name from the extraction step.
    2 region is the region to deploy the cluster into, for example us-east1.
    3 zone is the zone to deploy the bootstrap instance into, for example us-east1-b.
    4 cluster_network is the selfLink URL to the cluster network.
    5 control_subnet is the selfLink URL to the control subnet.
    6 image is the selfLink URL to the RHCOS image.
    7 machine_type is the machine type of the instance, for example n1-standard-4.
    8 bootstrap_ign is the URL output when creating a signed URL above.
  6. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-bootstrap --config 04_bootstrap.yaml
  7. The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the bootstrap machine manually:

    $ gcloud compute target-pools add-instances \
        ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gcloud compute target-pools add-instances \
        ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap

Deployment Manager template for the bootstrap machine

You can use the following Deployment Mananger template to deploy the bootstrap machine that you need for your OpenShift Container Platform cluster:

04_bootstrap.py Deployment Manager template
def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-bootstrap-public-ip',
        'type': 'compute.v1.address',
        'properties': {
            'region': context.properties['region']
        }
    }, {
        'name': context.properties['infra_id'] + '-bootstrap-in-ssh',
        'type': 'compute.v1.firewall',
        'properties': {
            'network': context.properties['cluster_network'],
            'allowed': [{
                'IPProtocol': 'tcp',
                'ports': ['22']
            }],
            'sourceRanges':  ['0.0.0.0/0'],
            'targetTags': [context.properties['infra_id'] + '-bootstrap']
        }
    }, {
        'name': context.properties['infra_id'] + '-bootstrap',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zone'] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': '{"ignition":{"config":{"replace":{"source":"' + context.properties['bootstrap_ign'] + '","verification":{}}},"timeouts":{},"version":"2.1.0"},"networkd":{},"passwd":{},"storage":{},"systemd":{}}',
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet'],
                'accessConfigs': [{
                    'natIP': '$(ref.' + context.properties['infra_id'] + '-bootstrap-public-ip.address)'
                }]
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                    context.properties['infra_id'] + '-bootstrap'
                ]
            },
            'zone': context.properties['zone']
        }
    }]

    return {'resources': resources}

Creating the control plane machines in GCP

You must create the control plane machines in Google Cloud Platform (GCP) for your cluster to use. One way to create these machines is to modify the provided Deployment Manager template.

If you do not use the provided Deployment Manager template to create your control plane machines, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites
  • Configure a GCP account.

  • Generate the Ignition config files for your cluster.

  • Create and configure a VPC and assocated subnets in GCP.

  • Create and configure networking and load balancers in GCP.

  • Create control plane and compute roles.

  • Create the bootstrap machine.

Procedure
  1. Copy the template from the Deployment Manager template for control plane machines section of this topic and save it as 05_control_plane.py on your computer. This template describes the control plane machines that your cluster requires.

  2. Export the following variables needed by the resource definition:

    $ export MASTER_SERVICE_ACCOUNT_EMAIL=`gcloud iam service-accounts list | grep "^${INFRA_ID}-master-node " | awk '{print $2}'`
    $ export MASTER_IGNITION=`cat master.ign`
  3. Create a 05_control_plane.yaml resource definition file:

    $ cat <<EOF >05_control_plane.yaml
    imports:
    - path: 05_control_plane.py
    
    resources:
    - name: cluster-control-plane
      type: 05_control_plane.py
      properties:
        infra_id: '${INFRA_ID}' (1)
        region: '${REGION}' (2)
        zones: (3)
        - '${ZONE_0}'
        - '${ZONE_1}'
        - '${ZONE_2}'
    
        control_subnet: '${CONTROL_SUBNET}' (4)
        image: '${CLUSTER_IMAGE}' (5)
        machine_type: 'n1-standard-4' (6)
        root_volume_size: '128'
        service_account_email: '${MASTER_SERVICE_ACCOUNT_EMAIL}' (7)
    
        ignition: '${MASTER_IGNITION}' (8)
    EOF
    1 infra_id is the INFRA_ID infrastructure name from the extraction step.
    2 region is the region to deploy the cluster into, for example us-east1.
    3 zones are the zones to deploy the bootstrap instance into, for example us-east1-b, us-east1-c, and us-east1-d.
    4 control_subnet is the selfLink URL to the control subnet.
    5 image is the selfLink URL to the RHCOS image.
    6 machine_type is the machine type of the instance, for example n1-standard-4.
    7 service_account_email is the email address for the master service account created above.
    8 ignition is the contents of the master.ign file.
  4. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-control-plane --config 05_control_plane.yaml
  5. The templates do not manage DNS entries due to limitations of Deployment Manager, so you must add the etcd entries manually:

    $ export MASTER0_IP=`gcloud compute instances describe ${INFRA_ID}-m-0 --zone ${ZONE_0} --format json | jq -r .networkInterfaces[0].networkIP`
    $ export MASTER1_IP=`gcloud compute instances describe ${INFRA_ID}-m-1 --zone ${ZONE_1} --format json | jq -r .networkInterfaces[0].networkIP`
    $ export MASTER2_IP=`gcloud compute instances describe ${INFRA_ID}-m-2 --zone ${ZONE_2} --format json | jq -r .networkInterfaces[0].networkIP`
    $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
    $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER0_IP} --name etcd-0.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER1_IP} --name etcd-1.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${MASTER2_IP} --name etcd-2.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add \
      "0 10 2380 etcd-0.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      "0 10 2380 etcd-1.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      "0 10 2380 etcd-2.${CLUSTER_NAME}.${BASE_DOMAIN}." \
      --name _etcd-server-ssl._tcp.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type SRV --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone
  6. The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the control plane machines manually:

    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-m-0
    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_1}" --instances=${INFRA_ID}-m-1
    $ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_2}" --instances=${INFRA_ID}-m-2
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-m-0
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_1}" --instances=${INFRA_ID}-m-1
    $ gcloud compute target-pools add-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_2}" --instances=${INFRA_ID}-m-2

Deployment Manager template for control plane machines

You can use the following Deployment Mananger template to deploy the control plane machines that you need for your OpenShift Container Platform cluster:

05_control_plane.py Deployment Manager template
def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-m-0',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][0] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][0] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][0]
        }
    }, {
        'name': context.properties['infra_id'] + '-m-1',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][1] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][1] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][1]
        }
    }, {
        'name': context.properties['infra_id'] + '-m-2',
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'diskType': 'zones/' + context.properties['zones'][2] + '/diskTypes/pd-ssd',
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zones'][2] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['control_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-master',
                ]
            },
            'zone': context.properties['zones'][2]
        }
    }]

    return {'resources': resources}

Wait for bootstrap completion and remove bootstrap resources in GCP

After you create all of the required infrastructure in Google Cloud Platform (GCP), wait for the bootstrap process to complete on the machines that you provisioned by using the Ignition config files that you generated with the installation program.

Prerequisites
  • Configure a GCP account.

  • Generate the Ignition config files for your cluster.

  • Create and configure a VPC and assocated subnets in GCP.

  • Create and configure networking and load balancers in GCP.

  • Create control plane and compute roles.

  • Create the bootstrap machine.

  • Create the control plane machines.

Procedure
  1. Change to the directory that contains the installation program and run the following command:

    $ ./openshift-install wait-for bootstrap-complete --dir=<installation_directory> \ (1)
        --log-level info (2)
    1 For <installation_directory>, specify the path to the directory that you stored the installation files in.
    2 To view different installation details, specify warn, debug, or error instead of info.

    If the command exits without a FATAL warning, your production control plane has initialized.

  2. Delete the bootstrap resources:

    $ gcloud compute target-pools remove-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gcloud compute target-pools remove-instances ${INFRA_ID}-ign-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-bootstrap
    $ gsutil rm gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign
    $ gsutil rb gs://${INFRA_ID}-bootstrap-ignition
    $ gcloud deployment-manager deployments delete ${INFRA_ID}-bootstrap

Creating additional worker machines in GCP

You can create worker machines in Google Cloud Platform (GCP) for your cluster to use by launching individual instances discretely or by automated processes outside the cluster, such as Auto Scaling Groups. You can also take advantage of the built-in cluster scaling mechanisms and the machine API in OpenShift Container Platform.

In this example, you manually launch one instance by using the Deployment Manager template. Additional instances can be launched by including additional resources of type 06_worker.py in the file.

If you do not use the provided Deployment Manager template to create your worker machines, you must review the provided information and manually create the infrastructure. If your cluster does not initialize correctly, you might have to contact Red Hat support with your installation logs.

Prerequisites
  • Configure a GCP account.

  • Generate the Ignition config files for your cluster.

  • Create and configure a VPC and assocated subnets in GCP.

  • Create and configure networking and load balancers in GCP.

  • Create control plane and compute roles.

  • Create the bootstrap machine.

  • Create the control plane machines.

Procedure
  1. Copy the template from the Deployment Manager template for worker machines section of this topic and save it as 06_worker.py on your computer. This template describes the worker machines that your cluster requires.

  2. Export the following variables needed by the resource definition:

    $ export COMPUTE_SUBNET=`gcloud compute networks subnets describe ${INFRA_ID}-worker-subnet --region=${REGION} --format json | jq -r .selfLink`
    $ export WORKER_SERVICE_ACCOUNT_EMAIL=`gcloud iam service-accounts list | grep "^${INFRA_ID}-worker-node " | awk '{print $2}'`
    $ export WORKER_IGNITION=`cat worker.ign`
  3. Create a 06_worker.yaml resource definition file:

    $ cat <<EOF >06_worker.yaml
    imports:
    - path: 06_worker.py
    
    resources:
    - name: 'w-a-0' (1)
      type: 06_worker.py
      properties:
        infra_id: '${INFRA_ID}' (2)
        region: '${REGION}' (3)
        zone: '${ZONE_0}' (4)
    
        compute_subnet: '${COMPUTE_SUBNET}' (5)
        image: '${CLUSTER_IMAGE}' (6)
        machine_type: 'n1-standard-4' (7)
        root_volume_size: '128'
        service_account_email: '${WORKER_SERVICE_ACCOUNT_EMAIL}' (8)
    
        ignition: '${WORKER_IGNITION}' (9)
    EOF
    1 name is the name of the worker machine, for example w-a-0.
    2 infra_id is the INFRA_ID infrastructure name from the extraction step.
    3 region is the region to deploy the cluster into, for example us-east1.
    4 zone is the zone to deploy the worker machine into, for example us-east1-b.
    5 compute_subnet is the selfLink URL to the compute subnet.
    6 image is the selfLink URL to the RHCOS image.
    7 machine_type is the machine type of the instance, for example n1-standard-4.
    8 service_account_email is the email address for the worker service account created above.
    9 ignition is the contents of the worker.ign file.
  4. Optional: If you want to launch additional instances, include additional resources of type 06_worker.py in your 06_worker.yaml resource definition file.

  5. Create the deployment by using the gcloud CLI:

    $ gcloud deployment-manager deployments create ${INFRA_ID}-worker --config 06_worker.yaml

Deployment Manager template for worker machines

You can use the following Deloyment Manager template to deploy the worker machines that you need for your OpenShift Container Platform cluster:

06_worker.py Deployment Manager template
def GenerateConfig(context):

    resources = [{
        'name': context.properties['infra_id'] + '-' + context.env['name'],
        'type': 'compute.v1.instance',
        'properties': {
            'disks': [{
                'autoDelete': True,
                'boot': True,
                'initializeParams': {
                    'diskSizeGb': context.properties['root_volume_size'],
                    'sourceImage': context.properties['image']
                }
            }],
            'machineType': 'zones/' + context.properties['zone'] + '/machineTypes/' + context.properties['machine_type'],
            'metadata': {
                'items': [{
                    'key': 'user-data',
                    'value': context.properties['ignition']
                }]
            },
            'networkInterfaces': [{
                'subnetwork': context.properties['compute_subnet']
            }],
            'serviceAccounts': [{
                'email': context.properties['service_account_email'],
                'scopes': ['https://www.googleapis.com/auth/cloud-platform']
            }],
            'tags': {
                'items': [
                    context.properties['infra_id'] + '-worker',
                ]
            },
            'zone': context.properties['zone']
        }
    }]

    return {'resources': resources}

Installing the CLI

You can install the CLI in order to interact with OpenShift Container Platform using a command-line interface.

If you installed an earlier version of oc, you cannot use it to complete all of the commands in OpenShift Container Platform 4.2. Download and install the new version of oc.

Procedure
  1. From the Infrastructure Provider page on the Red Hat OpenShift Cluster Manager site, navigate to the page for your installation type and click Download Command-line Tools.

  2. Click the folder for your operating system and architecture and click the compressed file.

    You can install oc on Linux, Windows, or macOS.

  3. Save the file to your file system.

  4. Extract the compressed file.

  5. Place it in a directory that is on your PATH.

After you install the CLI, it is available using the oc command:

$ oc <command>

Logging in to the cluster

You can log in to your cluster as a default system user by exporting the cluster kubeconfig file. The kubeconfig file contains information about the cluster that is used by the CLI to connect a client to the correct cluster and API server. The file is specific to a cluster and is created during OpenShift Container Platform installation.

Prerequisites
  • Deploy an OpenShift Container Platform cluster.

  • Install the oc CLI.

Procedure
  1. Export the kubeadmin credentials:

    $ export KUBECONFIG=<installation_directory>/auth/kubeconfig (1)
    1 For <installation_directory>, specify the path to the directory that you stored the installation files in.
  2. Verify you can run oc commands successfully using the exported configuration:

    $ oc whoami
    system:admin

Approving the CSRs for your machines

When you add machines to a cluster, two pending certificates signing request (CSRs) are generated for each machine that you added. You must confirm that these CSRs are approved or, if necessary, approve them yourself.

Prerequisites
  • You added machines to your cluster.

  • Install the jq package.

Procedure
  1. Confirm that the cluster recognizes the machines:

    $ oc get nodes
    
    NAME      STATUS    ROLES   AGE  VERSION
    master-0  Ready     master  63m  v1.14.6+c4799753c
    master-1  Ready     master  63m  v1.14.6+c4799753c
    master-2  Ready     master  64m  v1.14.6+c4799753c
    worker-0  NotReady  worker  76s  v1.14.6+c4799753c
    worker-1  NotReady  worker  70s  v1.14.6+c4799753c

    The output lists all of the machines that you created.

  2. Review the pending certificate signing requests (CSRs) and ensure that the you see a client and server request with Pending or Approved status for each machine that you added to the cluster:

    $ oc get csr
    
    NAME        AGE     REQUESTOR                                                                   CONDITION
    csr-8b2br   15m     system:serviceaccount:openshift-machine-config-operator:node-bootstrapper   Pending (1)
    csr-8vnps   15m     system:serviceaccount:openshift-machine-config-operator:node-bootstrapper   Pending
    csr-bfd72   5m26s   system:node:ip-10-0-50-126.us-east-2.compute.internal                       Pending (2)
    csr-c57lv   5m26s   system:node:ip-10-0-95-157.us-east-2.compute.internal                       Pending
    ...
    1 A client request CSR.
    2 A server request CSR.

    In this example, two machines are joining the cluster. You might see more approved CSRs in the list.

  3. If the CSRs were not approved, after all of the pending CSRs for the machines you added are in Pending status, approve the CSRs for your cluster machines:

    Because the CSRs rotate automatically, approve your CSRs within an hour of adding the machines to the cluster. If you do not approve them within an hour, the certificates will rotate, and more than two certificates will be present for each node. You must approve all of these certificates. After you approve the initial CSRs, the subsequent node client CSRs are automatically approved by the cluster kube-controller-manager. You must implement a method of automatically approving the kubelet serving certificate requests.

    • To approve them individually, run the following command for each valid CSR:

      $ oc adm certificate approve <csr_name> (1)
      1 <csr_name> is the name of a CSR from the list of current CSRs.
    • If all the CSRs are valid, approve them all by running the following command:

      $ oc get csr -ojson | jq -r '.items[] | select(.status == {} ) | .metadata.name' | xargs oc adm certificate approve

Optional: Adding the ingress DNS records

If you removed the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs, you must manually create DNS records that point at the ingress load balancer. You can create either a wildcard *.apps.{baseDomain}. or specific records. You can use A, CNAME, and other records per your requirements.

Prerequisites
  • Configure a GCP account.

  • Remove the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs.

  • Create and configure a VPC and assocated subnets in GCP.

  • Create and configure networking and load balancers in GCP.

  • Create control plane and compute roles.

  • Create the bootstrap machine.

  • Create the control plane machines.

  • Create the worker machines.

Procedure
  1. Wait for the Ingress router to create a load balancer and populate the EXTERNAL-IP field:

    $ oc -n openshift-ingress get service router-default
    NAME             TYPE           CLUSTER-IP      EXTERNAL-IP      PORT(S)                      AGE
    router-default   LoadBalancer   172.30.18.154   35.233.157.184   80:32288/TCP,443:31215/TCP   98
  2. Add the A record to your public and private zones:

    $ export ROUTER_IP=`oc -n openshift-ingress get service router-default --no-headers | awk '{print $4}'`
    
    $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
    $ gcloud dns record-sets transaction start --zone ${BASE_DOMAIN_ZONE_NAME}
    $ gcloud dns record-sets transaction add ${ROUTER_IP} --name \*.apps.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 300 --type A --zone ${BASE_DOMAIN_ZONE_NAME}
    $ gcloud dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME}
    
    $ if [ -f transaction.yaml ]; then rm transaction.yaml; fi
    $ gcloud dns record-sets transaction start --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction add ${ROUTER_IP} --name \*.apps.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 300 --type A --zone ${INFRA_ID}-private-zone
    $ gcloud dns record-sets transaction execute --zone ${INFRA_ID}-private-zone

    If you prefer to add explicit domains instead of using a wildcard, you can create entries for each of the cluster’s current routes:

    $ oc get --all-namespaces -o jsonpath='{range .items[*]}{range .status.ingress[*]}{.host}{"\n"}{end}{end}' routes
    oauth-openshift.apps.your.cluster.domain.example.com
    console-openshift-console.apps.your.cluster.domain.example.com
    downloads-openshift-console.apps.your.cluster.domain.example.com
    alertmanager-main-openshift-monitoring.apps.your.cluster.domain.example.com
    grafana-openshift-monitoring.apps.your.cluster.domain.example.com
    prometheus-k8s-openshift-monitoring.apps.your.cluster.domain.example.com

Completing a GCP installation on user-provisioned infrastructure

After you start the OpenShift Container Platform installation on Google Cloud Platform (GCP) user-provisioned infrastructure, you can monitor the cluster events until the cluster is ready.

Prerequisites
  • Deploy the bootstrap machine for an OpenShift Container Platform cluster on user-provisioned GCP infrastructure.

  • Install the oc CLI and log in.

Procedure
  1. Complete the cluster installation:

    $ ./openshift-install --dir=<installation_directory> wait-for install-complete (1)
    
    INFO Waiting up to 30m0s for the cluster to initialize...
    1 For <installation_directory>, specify the path to the directory that you stored the installation files in.

    The Ignition config files that the installation program generates contain certificates that expire after 24 hours. You must keep the cluster running for 24 hours in a non-degraded state to ensure that the first certificate rotation has finished.

  2. Observe the running state of your cluster.

    1. Run the following command to view the current cluster version and status:

      $ oc get clusterversion
      NAME      VERSION   AVAILABLE   PROGRESSING   SINCE   STATUS
      version             False       True          24m     Working towards 4.2.0-0: 99% complete
    2. Run the following command to view the Operators managed on the control plane by the Cluster Version Operator (CVO):

      $ oc get clusteroperators
      NAME                                       VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE
      authentication                             4.2.0-0   True        False         False      6m18s
      cloud-credential                           4.2.0-0   True        False         False      17m
      cluster-autoscaler                         4.2.0-0   True        False         False      80s
      console                                    4.2.0-0   True        False         False      3m57s
      dns                                        4.2.0-0   True        False         False      22m
      image-registry                             4.2.0-0   True        False         False      5m4s
      ingress                                    4.2.0-0   True        False         False      4m38s
      insights                                   4.2.0-0   True        False         False      21m
      kube-apiserver                             4.2.0-0   True        False         False      12m
      kube-controller-manager                    4.2.0-0   True        False         False      12m
      kube-scheduler                             4.2.0-0   True        False         False      11m
      machine-api                                4.2.0-0   True        False         False      18m
      machine-config                             4.2.0-0   True        False         False      22m
      marketplace                                4.2.0-0   True        False         False      5m38s
      monitoring                                 4.2.0-0   True        False         False      86s
      network                                    4.2.0-0   True        False         False      14m
      node-tuning                                4.2.0-0   True        False         False      6m8s
      openshift-apiserver                        4.2.0-0   True        False         False      6m48s
      openshift-controller-manager               4.2.0-0   True        False         False      12m
      openshift-samples                          4.2.0-0   True        False         False      67s
      operator-lifecycle-manager                 4.2.0-0   True        False         False      15m
      operator-lifecycle-manager-catalog         4.2.0-0   True        False         False      15m
      operator-lifecycle-manager-packageserver   4.2.0-0   True        False         False      6m48s
      service-ca                                 4.2.0-0   True        False         False      17m
      service-catalog-apiserver                  4.2.0-0   True        False         False      6m18s
      service-catalog-controller-manager         4.2.0-0   True        False         False      6m19s
      storage                                    4.2.0-0   True        False         False      6m20s
    3. Run the following command to view your cluster Pods:

      $ oc get pods --all-namespaces
      NAMESPACE                                               NAME                                                                READY     STATUS      RESTARTS   AGE
      kube-system                                             etcd-member-ip-10-0-3-111.us-east-2.compute.internal                1/1       Running     0          35m
      kube-system                                             etcd-member-ip-10-0-3-239.us-east-2.compute.internal                1/1       Running     0          37m
      kube-system                                             etcd-member-ip-10-0-3-24.us-east-2.compute.internal                 1/1       Running     0          35m
      openshift-apiserver-operator                            openshift-apiserver-operator-6d6674f4f4-h7t2t                       1/1       Running     1          37m
      openshift-apiserver                                     apiserver-fm48r                                                     1/1       Running     0          30m
      openshift-apiserver                                     apiserver-fxkvv                                                     1/1       Running     0          29m
      openshift-apiserver                                     apiserver-q85nm                                                     1/1       Running     0          29m
      ...
      openshift-service-ca-operator                           openshift-service-ca-operator-66ff6dc6cd-9r257                      1/1       Running     0          37m
      openshift-service-ca                                    apiservice-cabundle-injector-695b6bcbc-cl5hm                        1/1       Running     0          35m
      openshift-service-ca                                    configmap-cabundle-injector-8498544d7-25qn6                         1/1       Running     0          35m
      openshift-service-ca                                    service-serving-cert-signer-6445fc9c6-wqdqn                         1/1       Running     0          35m
      openshift-service-catalog-apiserver-operator            openshift-service-catalog-apiserver-operator-549f44668b-b5q2w       1/1       Running     0          32m
      openshift-service-catalog-controller-manager-operator   openshift-service-catalog-controller-manager-operator-b78cr2lnm     1/1       Running     0          31m

    When the current cluster version is AVAILABLE, the installation is complete.

Next steps