Compute Engine API
In OpenShift Container Platform version 4.7, you can install a cluster on Google Cloud Platform (GCP) that uses infrastructure that you provide and an internal mirror of the installation release content.
While you can install an OpenShift Container Platform cluster by using mirrored installation release content, your cluster still requires internet access to use the GCP APIs. |
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 steps for performing a user-provisioned infrastructure installation are provided as an example only. Installing a cluster with infrastructure you provide requires knowledge of the cloud provider and the installation process of OpenShift Container Platform. 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. |
Create a registry on your mirror host and obtain the imageContentSources
data for your version of OpenShift Container Platform.
Because the installation media is on the mirror host, you can use that computer to complete all installation steps. |
Review details about the OpenShift Container Platform installation and update processes.
If you use a firewall, you must configure it to allow the sites that your cluster requires access to. While you might need to grant access to more sites, you must grant access to *.googleapis.com
and accounts.google.com
.
If you do not allow the system to manage identity and access management (IAM), then a cluster administrator can manually create and maintain IAM credentials. Manual mode can also be used in environments where the cloud IAM APIs are not reachable.
In OpenShift Container Platform 4.7, you can perform an installation that does not require an active connection to the Internet to obtain software components. Restricted network installations can be completed using installer-provisioned infrastructure or user-provisioned infrastructure, depending on the cloud platform to which you are installing the cluster.
If you choose to perform a restricted network installation on a cloud platform, you still require access to its cloud APIs. Some cloud functions, like Amazon Web Service’s Route 53 DNS and IAM services, require internet access. Depending on your network, you might require less Internet access for an installation on bare metal hardware or on VMware vSphere.
To complete a restricted network installation, you must create a registry that mirrors the contents of the OpenShift Container Platform registry and contains the installation media. You can create this registry on a mirror host, which can access both the Internet and your closed network, or by using other methods that meet your restrictions.
Because of the complexity of the configuration for user-provisioned installations, consider completing a standard user-provisioned infrastructure installation before you attempt a restricted network installation using user-provisioned infrastructure. Completing this test installation might make it easier to isolate and troubleshoot any issues that might arise during your installation in a restricted network. |
Clusters in restricted networks have the following additional limitations and restrictions:
The ClusterVersion
status includes an Unable to retrieve available updates
error.
By default, you cannot use the contents of the Developer Catalog because you cannot access the required image stream tags.
In OpenShift Container Platform 4.7, you require access to the Internet to obtain the images that are necessary to install your cluster.
You must have Internet access to:
Access OpenShift Cluster Manager to download the installation program and perform subscription management. If the cluster has internet access and you do not disable Telemetry, that service automatically entitles your cluster.
Access Quay.io to obtain the packages that are required to install your cluster.
Obtain the packages that are required to perform cluster updates.
If your cluster cannot have direct Internet access, you can perform a restricted network installation on some types of infrastructure that you provision. During that process, you download the content that is required and use it to populate a mirror registry with the packages that you need to install a cluster and generate the installation program. With some installation types, the environment that you install your cluster in will not require Internet access. Before you update the cluster, you update the content of the mirror registry. |
Before you can install OpenShift Container Platform, you must configure a Google Cloud Platform (GCP) project to host it.
To install OpenShift Container Platform, you must create a project in your Google Cloud Platform (GCP) account to host the cluster.
Create a project to host your OpenShift Container Platform cluster. See Creating and Managing Projects in the GCP documentation.
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 |
Your Google Cloud Platform (GCP) project requires access to several API services to complete OpenShift Container Platform installation.
You created a project to host your cluster.
Enable the following required API services in the project that hosts your cluster. See Enabling services in the GCP documentation.
API service | Console service name |
---|---|
Compute Engine API |
|
Google Cloud APIs |
|
Cloud Resource Manager API |
|
Google DNS API |
|
IAM Service Account Credentials API |
|
Identity and Access Management (IAM) API |
|
Service Management API |
|
Service Usage API |
|
Google Cloud Storage JSON API |
|
Cloud Storage |
|
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.
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. |
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.
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.
Service | Component | Location | Total resources required | Resources removed after bootstrap |
---|---|---|---|---|
Service account |
IAM |
Global |
5 |
0 |
Firewall rules |
Networking |
Global |
11 |
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 |
2 |
0 |
Subnetworks |
Compute |
Global |
2 |
0 |
Target pools |
Networking |
Global |
2 |
0 |
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.
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.
You created a project to host your cluster.
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.
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. |
Create the service account key in JSON format. See Creating service account keys in the GCP documentation.
The service account key is required to create a cluster.
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. If you deploy your cluster into an existing VPC, the service account does not require certain networking permissions, which are noted in the following lists:
Compute Admin
Security Admin
Service Account Admin
Service Account User
Storage Admin
DNS Administrator
Deployment Manager Editor
Service Account Key Admin
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:
Account | Roles |
---|---|
Control Plane |
|
|
|
|
|
|
|
|
|
Compute |
|
|
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-southeast1
(Jurong West, Singapore)
asia-southeast2
(Jakarta, Indonesia)
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)
us-west3
(Salt Lake City, Utah, USA)
us-west4
(Las Vegas, Nevada, USA)
To install OpenShift Container Platform on Google Cloud Platform (GCP) using user-provisioned infrastructure, you must install and configure the CLI tools for GCP.
You created a project to host your cluster.
You created a service account and granted it the required permissions.
Install the following binaries in $PATH
:
gcloud
gsutil
See Install the latest Cloud SDK version in the GCP documentation.
Authenticate using the gcloud
tool with your configured service account.
See Authorizing with a service account in the GCP documentation.
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. You also have the option to first set up a separate var
partition during the preparation phases of installation.
/var
partitionIt is recommended that disk partitioning for OpenShift Container Platform be left to the installer. However, there are cases where you might want to create separate partitions in a part of the filesystem that you expect to grow.
OpenShift Container Platform supports the addition of a single partition to attach storage to either the /var
partition or a subdirectory of /var
. For example:
/var/lib/containers
: Holds container-related content that can grow as more images and containers are added to a system.
/var/lib/etcd
: Holds data that you might want to keep separate for purposes such as performance optimization of etcd storage.
/var
: Holds data that you might want to keep separate for purposes such as auditing.
Storing the contents of a /var
directory separately makes it easier to grow storage for those areas as needed and reinstall OpenShift Container Platform at a later date and keep that data intact. With this method, you will not have to pull all your containers again, nor will you have to copy massive log files when you update systems.
Because /var
must be in place before a fresh installation of Red Hat Enterprise Linux CoreOS (RHCOS), the following procedure sets up the separate /var
partition by creating a machine config that is inserted during the openshift-install
preparation phases of an OpenShift Container Platform installation.
If you follow the steps to create a separate |
Create a directory to hold the OpenShift Container Platform installation files:
$ mkdir $HOME/clusterconfig
Run openshift-install
to create a set of files in the manifest
and openshift
subdirectories. Answer the system questions as you are prompted:
$ openshift-install create manifests --dir $HOME/clusterconfig
? SSH Public Key ...
INFO Credentials loaded from the "myprofile" profile in file "/home/myuser/.aws/credentials"
INFO Consuming Install Config from target directory
INFO Manifests created in: $HOME/clusterconfig/manifests and $HOME/clusterconfig/openshift
Optional: Confirm that the installation program created manifests in the clusterconfig/openshift
directory:
$ ls $HOME/clusterconfig/openshift/
99_kubeadmin-password-secret.yaml
99_openshift-cluster-api_master-machines-0.yaml
99_openshift-cluster-api_master-machines-1.yaml
99_openshift-cluster-api_master-machines-2.yaml
...
Create a MachineConfig
object and add it to a file in the openshift
directory. For example, name the file 98-var-partition.yaml
, change the disk device name to the name of the storage device on the worker
systems, and set the storage size as appropriate. This example places the /var
directory on a separate partition:
apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfig
metadata:
labels:
machineconfiguration.openshift.io/role: worker
name: 98-var-partition
spec:
config:
ignition:
version: 3.2.0
storage:
disks:
- device: /dev/<device_name> (1)
partitions:
- label: var
startMiB: <partition_start_offset> (2)
sizeMiB: <partition_size> (3)
filesystems:
- device: /dev/disk/by-partlabel/var
path: /var
format: xfs
systemd:
units:
- name: var.mount (4)
enabled: true
contents: |
[Unit]
Before=local-fs.target
[Mount]
What=/dev/disk/by-partlabel/var
Where=/var
Options=defaults,prjquota (5)
[Install]
WantedBy=local-fs.target
1 | The storage device name of the disk that you want to partition. |
2 | When adding a data partition to the boot disk, a minimum value of 25000 MiB (Mebibytes) is recommended. The root file system is automatically resized to fill all available space up to the specified offset. If no value is specified, or if the specified value is smaller than the recommended minimum, the resulting root file system will be too small, and future reinstalls of RHCOS might overwrite the beginning of the data partition. |
3 | The size of the data partition in mebibytes. |
4 | The name of the mount unit must match the directory specified in the Where= directive. For example, for a filesystem mounted on /var/lib/containers , the unit must be named var-lib-containers.mount . |
5 | The prjquota mount option must be enabled for filesystems used for container storage. |
When creating a separate |
Run openshift-install
again to create Ignition configs from a set of files in the manifest
and openshift
subdirectories:
$ openshift-install create ignition-configs --dir $HOME/clusterconfig
$ ls $HOME/clusterconfig/
auth bootstrap.ign master.ign metadata.json worker.ign
Now you can use the Ignition config files as input to the installation procedures to install Red Hat Enterprise Linux CoreOS (RHCOS) systems.
You can customize the OpenShift Container Platform cluster you install on Google Cloud Platform (GCP).
Obtain the OpenShift Container Platform installation program and the pull secret for your cluster. For a restricted network installation, these files are on your mirror host.
Have the imageContentSources
values that were generated during mirror registry creation.
Obtain the contents of the certificate for your mirror registry.
Obtain service principal permissions at the subscription level.
Create the install-config.yaml
file.
Change to the directory that contains the installation program and 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. |
At the prompts, provide the configuration details for your cloud:
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, specify an SSH key that your |
Select gcp as the platform to target.
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.
Select the project ID to provision the cluster in. The default value is specified by the service account that you configured.
Select the region to deploy the cluster to.
Select the base domain to deploy the cluster to. The base domain corresponds to the public DNS zone that you created for your cluster.
Enter a descriptive name for your cluster.
Paste the pull secret from the Red Hat OpenShift Cluster Manager.
Edit the install-config.yaml
file to provide the additional information that
is required for an installation in a restricted network.
Update the pullSecret
value to contain the authentication information for
your registry:
pullSecret: '{"auths":{"<mirror_host_name>:5000": {"auth": "<credentials>","email": "you@example.com"}}}'
For <mirror_host_name>
, specify the registry domain name
that you specified in the certificate for your mirror registry, and for
<credentials>
, specify the base64-encoded user name and password for
your mirror registry.
Add the additionalTrustBundle
parameter and value.
additionalTrustBundle: |
-----BEGIN CERTIFICATE-----
ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
-----END CERTIFICATE-----
The value must be the contents of the certificate file that you used for your mirror registry, which can be an existing, trusted certificate authority or the self-signed certificate that you generated for the mirror registry.
Define the network and subnets for the VPC to install the cluster in under the parent platform.gcp
field:
network: <existing_vpc>
controlPlaneSubnet: <control_plane_subnet>
computeSubnet: <compute_subnet>
For platform.gcp.network
, specify the name for the existing Google VPC. For platform.gcp.controlPlaneSubnet
and platform.gcp.computeSubnet
, specify the existing subnets to deploy the control plane machines and compute machines, respectively.
Add the image content resources, which look like this excerpt:
imageContentSources:
- mirrors:
- <mirror_host_name>:5000/<repo_name>/release
source: quay.example.com/openshift-release-dev/ocp-release
- mirrors:
- <mirror_host_name>:5000/<repo_name>/release
source: registry.example.com/ocp/release
To complete these values, use the imageContentSources
that you recorded during mirror registry creation.
Make any other modifications to the install-config.yaml
file that you require. You can find more information about
the available parameters in the Installation configuration parameters section.
Back up the install-config.yaml
file so that you can use
it to install multiple clusters.
The |
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.
You have an existing install-config.yaml
file.
You reviewed the sites that your cluster requires access to and determined whether any of them need to bypass the proxy. By default, all cluster egress traffic is proxied, including calls to hosting cloud provider APIs. You added sites to the Proxy
object’s spec.noProxy
field to bypass the proxy if necessary.
The For installations on Amazon Web Services (AWS), Google Cloud Platform (GCP), Microsoft Azure, and Red Hat OpenStack Platform (RHOSP), the |
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: https://<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. |
3 | A comma-separated list of destination domain names, IP addresses, or
other network CIDRs to exclude from proxying. Preface a domain with . to match subdomains only. For example, .y.com matches x.y.com , but not y.com . Use * to bypass the proxy for all destinations. |
4 | If provided, the installation program generates a config map that is named user-ca-bundle in
the openshift-config namespace to hold the additional CA
certificates. If you provide additionalTrustBundle and at least one proxy setting, the Proxy object is configured to reference the user-ca-bundle config map in the trustedCA field. The Cluster Network
Operator then creates a trusted-ca-bundle config map that merges the contents specified for the trustedCA parameter
with the RHCOS trust bundle. 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 |
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 |
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 installation configuration file transforms into the Kubernetes manifests. The manifests wrap into the Ignition configuration files, which are later used to create the cluster.
The Ignition config files that the installation program generates contain certificates that expire after 24 hours, which are then renewed at that time. If the cluster is shut down before renewing the certificates and the cluster is later restarted after the 24 hours have elapsed, the cluster automatically recovers the expired certificates. The exception is that you must manually approve the pending |
You obtained the OpenShift Container Platform installation program. For a restricted network installation, these files are on your mirror host.
You created the install-config.yaml
installation configuration file.
Change to the directory that contains the installation program and generate the Kubernetes manifests for the cluster:
$ ./openshift-install create manifests --dir <installation_directory> (1)
1 | For <installation_directory> , specify the installation directory that
contains the install-config.yaml file you created. |
Remove the Kubernetes manifest files that define the control plane machines:
$ rm -f <installation_directory>/openshift/99_openshift-cluster-api_master-machines-*.yaml
By removing these files, you prevent the cluster from automatically generating control plane machines.
Optional: If you do not want the cluster to provision compute machines, remove the Kubernetes manifest files that define the worker machines:
$ rm -f <installation_directory>/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.
Check that the mastersSchedulable
parameter in the <installation_directory>/manifests/cluster-scheduler-02-config.yml
Kubernetes manifest file is set to false
. This setting prevents pods from being scheduled on the control plane machines:
Open the <installation_directory>/manifests/cluster-scheduler-02-config.yml
file.
Locate the mastersSchedulable
parameter and ensure that it is set to false
.
Save and exit the file.
Optional: If you do not want
the Ingress Operator
to create DNS records on your behalf, remove the privateZone
and publicZone
sections from the <installation_directory>/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 this section completely. |
If you do so, you must add ingress DNS records manually in a later step.
To create the Ignition configuration files, run the following command from the directory that contains the installation program:
$ ./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
The Ignition config files contain a unique cluster identifier that you can use to uniquely identify your cluster in Google Cloud Platform (GCP). The infrastructure name is also used to locate the appropriate GCP resources during an OpenShift Container Platform installation. The provided Deployment Manager templates contain references to this infrastructure name, so you must extract it.
You obtained the OpenShift Container Platform installation program and the pull secret for your cluster.
You generated the Ignition config files for your cluster.
You installed the jq
package.
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)
1 | For <installation_directory> , specify the path to the directory that you stored the
installation files in. |
openshift-vw9j6 (1)
1 | The output of this command is your cluster name and a random string. |
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. |
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.
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. |
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. |
Configure a GCP account.
Generate the Ignition config files for your cluster.
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.
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-central1 . |
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 . |
Create the deployment by using the gcloud
CLI:
$ gcloud deployment-manager deployments create ${INFRA_ID}-vpc --config 01_vpc.yaml
You can use the following Deployment Manager template to deploy the VPC that you need for your OpenShift Container Platform cluster:
01_vpc.py
Deployment Manager templatedef GenerateConfig(context):
resources = [{
'name': context.properties['infra_id'] + '-network',
'type': 'compute.v1.network',
'properties': {
'region': context.properties['region'],
'autoCreateSubnetworks': False
}
}, {
'name': context.properties['infra_id'] + '-master-subnet',
'type': 'compute.v1.subnetwork',
'properties': {
'region': context.properties['region'],
'network': '$(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': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
'ipCidrRange': context.properties['worker_subnet_cidr']
}
}, {
'name': context.properties['infra_id'] + '-router',
'type': 'compute.v1.router',
'properties': {
'region': context.properties['region'],
'network': '$(ref.' + context.properties['infra_id'] + '-network.selfLink)',
'nats': [{
'name': context.properties['infra_id'] + '-nat-master',
'natIpAllocateOption': 'AUTO_ONLY',
'minPortsPerVm': 7168,
'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
'subnetworks': [{
'name': '$(ref.' + context.properties['infra_id'] + '-master-subnet.selfLink)',
'sourceIpRangesToNat': ['ALL_IP_RANGES']
}]
}, {
'name': context.properties['infra_id'] + '-nat-worker',
'natIpAllocateOption': 'AUTO_ONLY',
'minPortsPerVm': 512,
'sourceSubnetworkIpRangesToNat': 'LIST_OF_SUBNETWORKS',
'subnetworks': [{
'name': '$(ref.' + context.properties['infra_id'] + '-worker-subnet.selfLink)',
'sourceIpRangesToNat': ['ALL_IP_RANGES']
}]
}]
}
}]
return {'resources': resources}
All the Red Hat Enterprise Linux CoreOS (RHCOS) machines require network in initramfs
during boot
to fetch Ignition config from the machine config server.
During the initial boot, the machines require either a DHCP server or that static IP addresses be set on each host in the cluster to establish a network connection, which allows them to download their Ignition config files.
It is recommended to use the DHCP server to manage the machines for the cluster long-term. Ensure that the DHCP server is configured to provide persistent IP addresses and host names to the cluster machines.
The Kubernetes API server must be able to resolve the node names of the cluster machines. If the API servers and worker nodes are in different zones, you can configure a default DNS search zone to allow the API server to resolve the node names. Another supported approach is to always refer to hosts by their fully-qualified domain names in both the node objects and all DNS requests.
You must configure the network connectivity between machines to allow cluster components to communicate. Each machine must be able to resolve the host names of all other machines in the cluster.
Protocol | Port | Description |
---|---|---|
ICMP |
N/A |
Network reachability tests |
TCP |
|
Metrics |
|
Host level services, including the node exporter on ports |
|
|
The default ports that Kubernetes reserves |
|
|
openshift-sdn |
|
UDP |
|
VXLAN and Geneve |
|
VXLAN and Geneve |
|
|
Host level services, including the node exporter on ports |
|
TCP/UDP |
|
Kubernetes node port |
Protocol | Port | Description |
---|---|---|
TCP |
|
Kubernetes API |
Protocol | Port | Description |
---|---|---|
TCP |
|
etcd server and peer ports |
The infrastructure that you provision for your cluster must meet the following network topology requirements.
OpenShift Container Platform requires all nodes to have internet access to pull images for platform containers and provide telemetry data to Red Hat. |
Before you install OpenShift Container Platform, you must provision two load balancers that meet the following requirements:
API load balancer: Provides a common endpoint for users, both human and machine, to interact with and configure the platform. Configure the following conditions:
Layer 4 load balancing only. This can be referred to as Raw TCP, SSL Passthrough, or SSL Bridge mode. If you use SSL Bridge mode, you must enable Server Name Indication (SNI) for the API routes.
A stateless load balancing algorithm. The options vary based on the load balancer implementation.
Do not configure session persistence for an API load balancer. |
Configure the following ports on both the front and back of the load balancers:
Port | Back-end machines (pool members) | Internal | External | Description |
---|---|---|---|---|
|
Bootstrap and control plane. You remove the bootstrap machine from the load
balancer after the bootstrap machine initializes the cluster control plane. You
must configure the |
X |
X |
Kubernetes API server |
|
Bootstrap and control plane. You remove the bootstrap machine from the load balancer after the bootstrap machine initializes the cluster control plane. |
X |
Machine config server |
The load balancer must be configured to take a maximum of 30 seconds from the
time the API server turns off the |
Application Ingress load balancer: Provides an Ingress point for application traffic flowing in from outside the cluster. Configure the following conditions:
Layer 4 load balancing only. This can be referred to as Raw TCP, SSL Passthrough, or SSL Bridge mode. If you use SSL Bridge mode, you must enable Server Name Indication (SNI) for the Ingress routes.
A connection-based or session-based persistence is recommended, based on the options available and types of applications that will be hosted on the platform.
Configure the following ports on both the front and back of the load balancers:
Port | Back-end machines (pool members) | Internal | External | Description |
---|---|---|---|---|
|
The machines that run the Ingress router pods, compute, or worker, by default. |
X |
X |
HTTPS traffic |
|
The machines that run the Ingress router pods, compute, or worker, by default. |
X |
X |
HTTP traffic |
If the true IP address of the client can be seen by the load balancer, enabling source IP-based session persistence can improve performance for applications that use end-to-end TLS encryption. |
A working configuration for the Ingress router is required for an OpenShift Container Platform cluster. You must configure the Ingress router after the control plane initializes. |
OpenShift Container Platform clusters are configured to use a public Network Time Protocol (NTP) server by default. If you want to use a local enterprise NTP server, or if your cluster is being deployed in a disconnected network, you can configure the cluster to use a specific time server. For more information, see the documentation for Configuring chrony time service.
If a DHCP server provides NTP server information, the chrony time service on the Red Hat Enterprise Linux CoreOS (RHCOS) machines read the information and can sync the clock with the NTP servers.
You must configure load balancers 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. |
Configure a GCP account.
Generate the Ignition config files for your cluster.
Create and configure a VPC and associated subnets in GCP.
Copy the template from the Deployment Manager template for the internal load balancer
section of this topic and save it as 02_lb_int.py
on your computer. This
template describes the internal load balancing objects that your cluster
requires.
For an external cluster, also copy the template from the Deployment Manager template for the external load balancer
section of this topic and save it as 02_lb_ext.py
on your computer. This
template describes the external load balancing objects that your cluster
requires.
Export the variables that the deployment template uses:
Export the cluster network location:
$ export CLUSTER_NETWORK=(`gcloud compute networks describe ${INFRA_ID}-network --format json | jq -r .selfLink`)
Export the control plane subnet location:
$ export CONTROL_SUBNET=(`gcloud compute networks subnets describe ${INFRA_ID}-master-subnet --region=${REGION} --format json | jq -r .selfLink`)
Export the three zones that the cluster uses:
$ 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`)
Create a 02_infra.yaml
resource definition file:
$ cat <<EOF >02_infra.yaml
imports:
- path: 02_lb_ext.py
- path: 02_lb_int.py (1)
resources:
- name: cluster-lb-ext (1)
type: 02_lb_ext.py
properties:
infra_id: '${INFRA_ID}' (2)
region: '${REGION}' (3)
- name: cluster-lb-int
type: 02_lb_int.py
properties:
cluster_network: '${CLUSTER_NETWORK}'
control_subnet: '${CONTROL_SUBNET}' (4)
infra_id: '${INFRA_ID}'
region: '${REGION}'
zones: (5)
- '${ZONE_0}'
- '${ZONE_1}'
- '${ZONE_2}'
EOF
1 | Required only when deploying an external cluster. |
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-central1 . |
4 | control_subnet is the URI to the control subnet. |
5 | zones are the zones to deploy the control plane instances into, like us-east1-b , us-east1-c , and us-east1-d . |
Create the deployment by using the gcloud
CLI:
$ gcloud deployment-manager deployments create ${INFRA_ID}-infra --config 02_infra.yaml
Export the cluster IP address:
$ export CLUSTER_IP=(`gcloud compute addresses describe ${INFRA_ID}-cluster-ip --region=${REGION} --format json | jq -r .address`)
For an external cluster, also export the cluster public IP address:
$ export CLUSTER_PUBLIC_IP=(`gcloud compute addresses describe ${INFRA_ID}-cluster-public-ip --region=${REGION} --format json | jq -r .address`)
You can use the following Deployment Manager template to deploy the external load balancer that you need for your OpenShift Container Platform cluster:
02_lb_ext.py
Deployment Manager templatedef GenerateConfig(context):
resources = [{
'name': context.properties['infra_id'] + '-cluster-public-ip',
'type': 'compute.v1.address',
'properties': {
'region': context.properties['region']
}
}, {
# Refer to docs/dev/kube-apiserver-health-check.md on how to correctly setup health check probe for kube-apiserver
'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': '$(ref.' + context.properties['infra_id'] + '-api-target-pool.selfLink)',
'portRange': '6443'
}
}]
return {'resources': resources}
You can use the following Deployment Manager template to deploy the internal load balancer that you need for your OpenShift Container Platform cluster:
02_lb_int.py
Deployment Manager templatedef GenerateConfig(context):
backends = []
for zone in context.properties['zones']:
backends.append({
'group': '$(ref.' + context.properties['infra_id'] + '-master-' + zone + '-instance-group' + '.selfLink)'
})
resources = [{
'name': context.properties['infra_id'] + '-cluster-ip',
'type': 'compute.v1.address',
'properties': {
'addressType': 'INTERNAL',
'region': context.properties['region'],
'subnetwork': context.properties['control_subnet']
}
}, {
# Refer to docs/dev/kube-apiserver-health-check.md on how to correctly setup health check probe for kube-apiserver
'name': context.properties['infra_id'] + '-api-internal-health-check',
'type': 'compute.v1.healthCheck',
'properties': {
'httpsHealthCheck': {
'port': 6443,
'requestPath': '/readyz'
},
'type': "HTTPS"
}
}, {
'name': context.properties['infra_id'] + '-api-internal-backend-service',
'type': 'compute.v1.regionBackendService',
'properties': {
'backends': backends,
'healthChecks': ['$(ref.' + context.properties['infra_id'] + '-api-internal-health-check.selfLink)'],
'loadBalancingScheme': 'INTERNAL',
'region': context.properties['region'],
'protocol': 'TCP',
'timeoutSec': 120
}
}, {
'name': context.properties['infra_id'] + '-api-internal-forwarding-rule',
'type': 'compute.v1.forwardingRule',
'properties': {
'backendService': '$(ref.' + context.properties['infra_id'] + '-api-internal-backend-service.selfLink)',
'IPAddress': '$(ref.' + context.properties['infra_id'] + '-cluster-ip.selfLink)',
'loadBalancingScheme': 'INTERNAL',
'ports': ['6443','22623'],
'region': context.properties['region'],
'subnetwork': context.properties['control_subnet']
}
}]
for zone in context.properties['zones']:
resources.append({
'name': context.properties['infra_id'] + '-master-' + zone + '-instance-group',
'type': 'compute.v1.instanceGroup',
'properties': {
'namedPorts': [
{
'name': 'ignition',
'port': 22623
}, {
'name': 'https',
'port': 6443
}
],
'network': context.properties['cluster_network'],
'zone': zone
}
})
return {'resources': resources}
You will need this template in addition to the 02_lb_ext.py
template when you create an external cluster.
You must configure a private DNS zone in Google Cloud Platform (GCP) for your OpenShift Container Platform cluster to use. One way to create this component 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. |
Configure a GCP account.
Generate the Ignition config files for your cluster.
Create and configure a VPC and associated subnets in GCP.
Copy the template from the Deployment Manager template for the private DNS
section of this topic and save it as 02_dns.py
on your computer. This
template describes the private DNS objects that your cluster
requires.
Create a 02_dns.yaml
resource definition file:
$ cat <<EOF >02_dns.yaml
imports:
- path: 02_dns.py
resources:
- name: cluster-dns
type: 02_dns.py
properties:
infra_id: '${INFRA_ID}' (1)
cluster_domain: '${CLUSTER_NAME}.${BASE_DOMAIN}' (2)
cluster_network: '${CLUSTER_NETWORK}' (3)
EOF
1 | infra_id is the INFRA_ID infrastructure name from the extraction step. |
2 | cluster_domain is the domain for the cluster, for example openshift.example.com . |
3 | cluster_network is the selfLink URL to the cluster network. |
Create the deployment by using the gcloud
CLI:
$ gcloud deployment-manager deployments create ${INFRA_ID}-dns --config 02_dns.yaml
The templates do not create DNS entries due to limitations of Deployment Manager, so you must create them manually:
Add the 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
For an external cluster, also add the 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 ${CLUSTER_PUBLIC_IP} --name api.${CLUSTER_NAME}.${BASE_DOMAIN}. --ttl 60 --type A --zone ${BASE_DOMAIN_ZONE_NAME}
$ gcloud dns record-sets transaction execute --zone ${BASE_DOMAIN_ZONE_NAME}
You can use the following Deployment Manager template to deploy the private DNS that you need for your OpenShift Container Platform cluster:
02_dns.py
Deployment Manager templatedef GenerateConfig(context):
resources = [{
'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}
You must create firewall rules 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. |
Configure a GCP account.
Generate the Ignition config files for your cluster.
Create and configure a VPC and associated subnets in GCP.
Copy the template from the
Deployment Manager template for firewall rules
section of this topic and save it as 03_firewall.py
on your computer. This
template describes the security groups that your cluster requires.
Create a 03_firewall.yaml
resource definition file:
$ cat <<EOF >03_firewall.yaml
imports:
- path: 03_firewall.py
resources:
- name: cluster-firewall
type: 03_firewall.py
properties:
allowed_external_cidr: '0.0.0.0/0' (1)
infra_id: '${INFRA_ID}' (2)
cluster_network: '${CLUSTER_NETWORK}' (3)
network_cidr: '${NETWORK_CIDR}' (4)
EOF
1 | allowed_external_cidr is the CIDR range that can access the cluster API and SSH to the bootstrap host. For an internal cluster, set this value to ${NETWORK_CIDR} . |
2 | infra_id is the INFRA_ID infrastructure name from the extraction step. |
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 . |
Create the deployment by using the gcloud
CLI:
$ gcloud deployment-manager deployments create ${INFRA_ID}-firewall --config 03_firewall.yaml
You can use the following Deployment Manager template to deploy the firewall rues that you need for your OpenShift Container Platform cluster:
03_firewall.py
Deployment Manager templatedef GenerateConfig(context):
resources = [{
'name': context.properties['infra_id'] + '-bootstrap-in-ssh',
'type': 'compute.v1.firewall',
'properties': {
'network': context.properties['cluster_network'],
'allowed': [{
'IPProtocol': 'tcp',
'ports': ['22']
}],
'sourceRanges': [context.properties['allowed_external_cidr']],
'targetTags': [context.properties['infra_id'] + '-bootstrap']
}
}, {
'name': context.properties['infra_id'] + '-api',
'type': 'compute.v1.firewall',
'properties': {
'network': context.properties['cluster_network'],
'allowed': [{
'IPProtocol': 'tcp',
'ports': ['6443']
}],
'sourceRanges': [context.properties['allowed_external_cidr']],
'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', '6443', '22624']
}],
'sourceRanges': ['35.191.0.0/16', '130.211.0.0/22', '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']
},{
'IPProtocol': 'tcp',
'ports': ['22623']
}],
'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': 'udp',
'ports': ['500', '4500']
},{
'IPProtocol': 'esp',
},{
'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'
]
}
}]
return {'resources': resources}
You must create IAM 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. |
Configure a GCP account.
Generate the Ignition config files for your cluster.
Create and configure a VPC and associated subnets in GCP.
Copy the template from the
Deployment Manager template for IAM roles
section of this topic and save it as 03_iam.py
on your computer. This
template describes the IAM roles that your cluster requires.
Create a 03_iam.yaml
resource definition file:
$ cat <<EOF >03_iam.yaml
imports:
- path: 03_iam.py
resources:
- name: cluster-iam
type: 03_iam.py
properties:
infra_id: '${INFRA_ID}' (1)
EOF
1 | infra_id is the INFRA_ID infrastructure name from the extraction step. |
Create the deployment by using the gcloud
CLI:
$ gcloud deployment-manager deployments create ${INFRA_ID}-iam --config 03_iam.yaml
Export the variable for the master service account:
$ export MASTER_SERVICE_ACCOUNT=(`gcloud iam service-accounts list --filter "email~^${INFRA_ID}-m@${PROJECT_NAME}." --format json | jq -r '.[0].email'`)
Export the variable for the worker service account:
$ export WORKER_SERVICE_ACCOUNT=(`gcloud iam service-accounts list --filter "email~^${INFRA_ID}-w@${PROJECT_NAME}." --format json | jq -r '.[0].email'`)
Export the variable for the subnet that hosts the compute machines:
$ export COMPUTE_SUBNET=(`gcloud compute networks subnets describe ${INFRA_ID}-worker-subnet --region=${REGION} --format json | jq -r .selfLink`)
The templates do not create the policy bindings due to limitations of Deployment Manager, so you must create them manually:
$ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SERVICE_ACCOUNT}" --role "roles/compute.instanceAdmin"
$ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SERVICE_ACCOUNT}" --role "roles/compute.networkAdmin"
$ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SERVICE_ACCOUNT}" --role "roles/compute.securityAdmin"
$ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SERVICE_ACCOUNT}" --role "roles/iam.serviceAccountUser"
$ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${MASTER_SERVICE_ACCOUNT}" --role "roles/storage.admin"
$ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SERVICE_ACCOUNT}" --role "roles/compute.viewer"
$ gcloud projects add-iam-policy-binding ${PROJECT_NAME} --member "serviceAccount:${WORKER_SERVICE_ACCOUNT}" --role "roles/storage.admin"
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_SERVICE_ACCOUNT}
You can use the following Deployment Manager template to deploy the IAM roles that you need for your OpenShift Container Platform cluster:
03_iam.py
Deployment Manager templatedef GenerateConfig(context):
resources = [{
'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}
You must use a valid Red Hat Enterprise Linux CoreOS (RHCOS) image for Google Cloud Platform (GCP) for your OpenShift Container Platform nodes.
Obtain the RHCOS image from 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>-<arch>-gcp.<arch>.tar.gz
.
Create the Google storage bucket:
$ gsutil mb gs://<bucket_name>
Upload the RHCOS image to the Google storage bucket:
$ gsutil cp <downloaded_image_file_path>/rhcos-<version>-x86_64-gcp.x86_64.tar.gz gs://<bucket_name>
Export the uploaded RHCOS image location as a variable:
$ export IMAGE_SOURCE="gs://<bucket_name>/rhcos-<version>-x86_64-gcp.x86_64.tar.gz"
Create the cluster image:
$ gcloud compute images create "${INFRA_ID}-rhcos-image" \
--source-uri="${IMAGE_SOURCE}"
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. |
Configure a GCP account.
Generate the Ignition config files for your cluster.
Create and configure a VPC and associated subnets in GCP.
Create and configure networking and load balancers in GCP.
Create control plane and compute roles.
Ensure pyOpenSSL is installed.
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.
Export the location of the Red Hat Enterprise Linux CoreOS (RHCOS) image that the installation program requires:
$ export CLUSTER_IMAGE=(`gcloud compute images describe ${INFRA_ID}-rhcos-image --format json | jq -r .selfLink`)
Create a bucket and upload the bootstrap.ign
file:
$ gsutil mb gs://${INFRA_ID}-bootstrap-ignition
$ gsutil cp <installation_directory>/bootstrap.ign gs://${INFRA_ID}-bootstrap-ignition/
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}'`
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-central1 . |
3 | zone is the zone to deploy the bootstrap instance into, for example us-central1-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 | root_volume_size is the boot disk size for the bootstrap machine. |
9 | bootstrap_ign is the URL output when creating a signed URL. |
Create the deployment by using the gcloud
CLI:
$ gcloud deployment-manager deployments create ${INFRA_ID}-bootstrap --config 04_bootstrap.yaml
The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the bootstrap machine manually.
Add the bootstrap instance to the internal load balancer instance group:
$ gcloud compute instance-groups unmanaged add-instances \
${INFRA_ID}-bootstrap-instance-group --zone=${ZONE_0} --instances=${INFRA_ID}-bootstrap
Add the bootstrap instance group to the internal load balancer backend service:
$ gcloud compute backend-services add-backend \
${INFRA_ID}-api-internal-backend-service --region=${REGION} --instance-group=${INFRA_ID}-bootstrap-instance-group --instance-group-zone=${ZONE_0}
You can use the following Deployment Manager template to deploy the bootstrap machine that you need for your OpenShift Container Platform cluster:
04_bootstrap.py
Deployment Manager templatedef 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',
'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'] + '"}},"version":"3.1.0"}}',
}]
},
'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']
}
}, {
'name': context.properties['infra_id'] + '-bootstrap-instance-group',
'type': 'compute.v1.instanceGroup',
'properties': {
'namedPorts': [
{
'name': 'ignition',
'port': 22623
}, {
'name': 'https',
'port': 6443
}
],
'network': context.properties['cluster_network'],
'zone': context.properties['zone']
}
}]
return {'resources': resources}
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. |
Configure a GCP account.
Generate the Ignition config files for your cluster.
Create and configure a VPC and associated subnets in GCP.
Create and configure networking and load balancers in GCP.
Create control plane and compute roles.
Create the bootstrap machine.
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.
Export the following variable required by the resource definition:
$ export MASTER_IGNITION=`cat <installation_directory>/master.ign`
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: '${INFRA_ID}' (1)
zones: (2)
- '${ZONE_0}'
- '${ZONE_1}'
- '${ZONE_2}'
control_subnet: '${CONTROL_SUBNET}' (3)
image: '${CLUSTER_IMAGE}' (4)
machine_type: 'n1-standard-4' (5)
root_volume_size: '128'
service_account_email: '${MASTER_SERVICE_ACCOUNT}' (6)
ignition: '${MASTER_IGNITION}' (7)
EOF
1 | infra_id is the INFRA_ID infrastructure name from the extraction step. |
2 | zones are the zones to deploy the control plane instances into, for example us-central1-a , us-central1-b , and us-central1-c . |
3 | control_subnet is the selfLink URL to the control subnet. |
4 | image is the selfLink URL to the RHCOS image. |
5 | machine_type is the machine type of the instance, for example n1-standard-4 . |
6 | service_account_email is the email address for the master service account that you created. |
7 | ignition is the contents of the master.ign file. |
Create the deployment by using the gcloud
CLI:
$ gcloud deployment-manager deployments create ${INFRA_ID}-control-plane --config 05_control_plane.yaml
The templates do not manage load balancer membership due to limitations of Deployment Manager, so you must add the control plane machines manually.
Run the following commands to add the control plane machines to the appropriate instance groups:
$ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_0}-instance-group --zone=${ZONE_0} --instances=${INFRA_ID}-master-0
$ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_1}-instance-group --zone=${ZONE_1} --instances=${INFRA_ID}-master-1
$ gcloud compute instance-groups unmanaged add-instances ${INFRA_ID}-master-${ZONE_2}-instance-group --zone=${ZONE_2} --instances=${INFRA_ID}-master-2
For an external cluster, you must also run the following commands to add the control plane machines to the target pools:
$ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_0}" --instances=${INFRA_ID}-master-0
$ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_1}" --instances=${INFRA_ID}-master-1
$ gcloud compute target-pools add-instances ${INFRA_ID}-api-target-pool --instances-zone="${ZONE_2}" --instances=${INFRA_ID}-master-2
You can use the following Deployment Manager template to deploy the control plane machines that you need for your OpenShift Container Platform cluster:
05_control_plane.py
Deployment Manager templatedef GenerateConfig(context):
resources = [{
'name': context.properties['infra_id'] + '-master-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'] + '-master-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'] + '-master-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}
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.
Configure a GCP account.
Generate the Ignition config files for your cluster.
Create and configure a VPC and associated 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.
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.
Delete the bootstrap resources:
$ gcloud compute backend-services remove-backend ${INFRA_ID}-api-internal-backend-service --region=${REGION} --instance-group=${INFRA_ID}-bootstrap-instance-group --instance-group-zone=${ZONE_0}
$ gsutil rm gs://${INFRA_ID}-bootstrap-ignition/bootstrap.ign
$ gsutil rb gs://${INFRA_ID}-bootstrap-ignition
$ gcloud deployment-manager deployments delete ${INFRA_ID}-bootstrap
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. |
Configure a GCP account.
Generate the Ignition config files for your cluster.
Create and configure a VPC and associated 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.
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.
Export the variables that the resource definition uses.
Export the subnet that hosts the compute machines:
$ export COMPUTE_SUBNET=(`gcloud compute networks subnets describe ${INFRA_ID}-worker-subnet --region=${REGION} --format json | jq -r .selfLink`)
Export the email address for your service account:
$ export WORKER_SERVICE_ACCOUNT=(`gcloud iam service-accounts list --filter "email~^${INFRA_ID}-w@${PROJECT_NAME}." --format json | jq -r '.[0].email'`)
Export the location of the compute machine Ignition config file:
$ export WORKER_IGNITION=`cat <installation_directory>/worker.ign`
Create a 06_worker.yaml
resource definition file:
$ cat <<EOF >06_worker.yaml
imports:
- path: 06_worker.py
resources:
- name: 'worker-0' (1)
type: 06_worker.py
properties:
infra_id: '${INFRA_ID}' (2)
zone: '${ZONE_0}' (3)
compute_subnet: '${COMPUTE_SUBNET}' (4)
image: '${CLUSTER_IMAGE}' (5)
machine_type: 'n1-standard-4' (6)
root_volume_size: '128'
service_account_email: '${WORKER_SERVICE_ACCOUNT}' (7)
ignition: '${WORKER_IGNITION}' (8)
- name: 'worker-1'
type: 06_worker.py
properties:
infra_id: '${INFRA_ID}' (2)
zone: '${ZONE_1}' (3)
compute_subnet: '${COMPUTE_SUBNET}' (4)
image: '${CLUSTER_IMAGE}' (5)
machine_type: 'n1-standard-4' (6)
root_volume_size: '128'
service_account_email: '${WORKER_SERVICE_ACCOUNT}' (7)
ignition: '${WORKER_IGNITION}' (8)
EOF
1 | name is the name of the worker machine, for example worker-0 . |
2 | infra_id is the INFRA_ID infrastructure name from the extraction step. |
3 | zone is the zone to deploy the worker machine into, for example us-central1-a . |
4 | compute_subnet is the selfLink URL to the compute 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 worker service account that you created. |
8 | ignition is the contents of the worker.ign file. |
Optional: If you want to launch additional instances, include additional
resources of type 06_worker.py
in your 06_worker.yaml
resource definition
file.
Create the deployment by using the gcloud
CLI:
$ gcloud deployment-manager deployments create ${INFRA_ID}-worker --config 06_worker.yaml
You can use the following Deployment Manager template to deploy the worker machines that you need for your OpenShift Container Platform cluster:
06_worker.py
Deployment Manager templatedef 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}
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.
You deployed an OpenShift Container Platform cluster.
You installed the oc
CLI.
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. |
Verify you can run oc
commands successfully using the exported configuration:
$ oc whoami
system:admin
Operator catalogs that source content provided by Red Hat and community projects are configured for OperatorHub by default during an OpenShift Container Platform installation. In a restricted network environment, you must disable the default catalogs as a cluster administrator.
Disable the sources for the default catalogs by adding disableAllDefaultSources: true
to the OperatorHub
object:
$ oc patch OperatorHub cluster --type json \
-p '[{"op": "add", "path": "/spec/disableAllDefaultSources", "value": true}]'
Alternatively, you can use the web console to manage catalog sources. From the Administration → Cluster Settings → Global Configuration → OperatorHub page, click the Sources tab, where you can create, delete, disable, and enable individual sources. |
When you add machines to a cluster, two pending certificate signing requests (CSRs) are generated for each machine that you added. You must confirm that these CSRs are approved or, if necessary, approve them yourself. The client requests must be approved first, followed by the server requests.
You added machines to your cluster.
Confirm that the cluster recognizes the machines:
$ oc get nodes
NAME STATUS ROLES AGE VERSION
master-0 Ready master 63m v1.20.0
master-1 Ready master 63m v1.20.0
master-2 Ready master 64m v1.20.0
The output lists all of the machines that you created.
The preceding output might not include the compute nodes, also known as worker nodes, until some CSRs are approved. |
Review the pending CSRs and ensure that you see the client requests with the 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
csr-8vnps 15m system:serviceaccount:openshift-machine-config-operator:node-bootstrapper Pending
...
In this example, two machines are joining the cluster. You might see more approved CSRs in the list.
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. Once the client CSR is approved, the Kubelet creates a secondary CSR for the serving certificate, which requires manual approval. Then, subsequent serving certificate renewal requests are automatically approved by the |
For clusters running on platforms that are not machine API enabled, such as bare metal and other user-provisioned infrastructure, you must implement a method of automatically approving the kubelet serving certificate requests (CSRs). If a request is not approved, then the |
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. |
To approve all pending CSRs, run the following command:
$ oc get csr -o go-template='{{range .items}}{{if not .status}}{{.metadata.name}}{{"\n"}}{{end}}{{end}}' | xargs --no-run-if-empty oc adm certificate approve
Some Operators might not become available until some CSRs are approved. |
Now that your client requests are approved, you must review the server requests for each machine that you added to the cluster:
$ oc get csr
NAME AGE REQUESTOR CONDITION
csr-bfd72 5m26s system:node:ip-10-0-50-126.us-east-2.compute.internal Pending
csr-c57lv 5m26s system:node:ip-10-0-95-157.us-east-2.compute.internal Pending
...
If the remaining CSRs are not approved, and are in the Pending
status, approve the CSRs for your cluster machines:
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. |
To approve all pending CSRs, run the following command:
$ oc get csr -o go-template='{{range .items}}{{if not .status}}{{.metadata.name}}{{"\n"}}{{end}}{{end}}' | xargs oc adm certificate approve
After all client and server CSRs have been approved, the machines have the Ready
status. Verify this by running the following command:
$ oc get nodes
NAME STATUS ROLES AGE VERSION
master-0 Ready master 73m v1.20.0
master-1 Ready master 73m v1.20.0
master-2 Ready master 74m v1.20.0
worker-0 Ready worker 11m v1.20.0
worker-1 Ready worker 11m v1.20.0
It can take a few minutes after approval of the server CSRs for the machines to transition to the |
For more information on CSRs, see Certificate Signing Requests.
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.
Configure a GCP account.
Remove the DNS Zone configuration when creating Kubernetes manifests and generating Ignition configs.
Create and configure a VPC and associated 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.
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
Add the A record to your zones:
To use A records:
Export the variable for the router IP address:
$ export ROUTER_IP=`oc -n openshift-ingress get service router-default --no-headers | awk '{print $4}'`
Add the A record to the private zones:
$ 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
For an external cluster, also add the A record to the public zones:
$ 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}
To add explicit domains instead of using a wildcard, 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
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.
Deploy the bootstrap machine for an OpenShift Container Platform cluster on user-provisioned GCP infrastructure.
Install the oc
CLI and log in.
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. |
|
Observe the running state of your cluster.
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 4.5.4: 99% complete
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 4.5.4 True False False 7m56s
cloud-credential 4.5.4 True False False 31m
cluster-autoscaler 4.5.4 True False False 16m
console 4.5.4 True False False 10m
csi-snapshot-controller 4.5.4 True False False 16m
dns 4.5.4 True False False 22m
etcd 4.5.4 False False False 25s
image-registry 4.5.4 True False False 16m
ingress 4.5.4 True False False 16m
insights 4.5.4 True False False 17m
kube-apiserver 4.5.4 True False False 19m
kube-controller-manager 4.5.4 True False False 20m
kube-scheduler 4.5.4 True False False 20m
kube-storage-version-migrator 4.5.4 True False False 16m
machine-api 4.5.4 True False False 22m
machine-config 4.5.4 True False False 22m
marketplace 4.5.4 True False False 16m
monitoring 4.5.4 True False False 10m
network 4.5.4 True False False 23m
node-tuning 4.5.4 True False False 23m
openshift-apiserver 4.5.4 True False False 17m
openshift-controller-manager 4.5.4 True False False 15m
openshift-samples 4.5.4 True False False 16m
operator-lifecycle-manager 4.5.4 True False False 22m
operator-lifecycle-manager-catalog 4.5.4 True False False 22m
operator-lifecycle-manager-packageserver 4.5.4 True False False 18m
service-ca 4.5.4 True False False 23m
service-catalog-apiserver 4.5.4 True False False 23m
service-catalog-controller-manager 4.5.4 True False False 23m
storage 4.5.4 True False False 17m
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.
In OpenShift Container Platform 4.7, the Telemetry service, which runs by default to provide metrics about cluster health and the success of updates, requires internet access. If your cluster is connected to the internet, Telemetry runs automatically, and your cluster is registered to OpenShift Cluster Manager.
After you confirm that your OpenShift Cluster Manager inventory is correct, either maintained automatically by Telemetry or manually by using OpenShift Cluster Manager, use subscription watch to track your OpenShift Container Platform subscriptions at the account or multi-cluster level.
See About remote health monitoring for more information about the Telemetry service
Configure image streams for the Cluster Samples Operator and the must-gather
tool.
Learn how to use Operator Lifecycle Manager (OLM) on restricted networks.
If the mirror registry that you used to install your cluster has a trusted CA, add it to the cluster by configuring additional trust stores.
If necessary, you can opt out of remote health reporting.