Chapter 9. Installation configuration parameters for vSphere

apiVersion:

The API version for the install-config.yaml content. The current version is v1. The installation program may also support older API versions.

String

baseDomain:

The base domain of your cloud provider. The base domain is used to create routes to your OpenShift Container Platform cluster components. The full DNS name for your cluster is a combination of the baseDomain and metadata.name parameter values that uses the <metadata.name>.<baseDomain> format.

A fully-qualified domain or subdomain name, such as example.com.

metadata:

Kubernetes resource ObjectMeta, from which only the name parameter is consumed.

Object

metadata:
  name:

The name of the cluster. DNS records for the cluster are all subdomains of {{.metadata.name}}.{{.baseDomain}}.

String of lowercase letters and hyphens (-), such as dev.

platform:

The configuration for the specific platform upon which to perform the installation: alibabacloud, aws, baremetal, azure, gcp, ibmcloud, nutanix, openstack, powervs, vsphere, or {}. For additional information about platform.<platform> parameters, consult the table for your specific platform that follows.

Object

pullSecret:

Get a pull secret from Red Hat OpenShift Cluster Manager to authenticate downloading container images for OpenShift Container Platform components from services such as Quay.io.

{
   "auths":{
      "cloud.openshift.com":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      },
      "quay.io":{
         "auth":"b3Blb=",
         "email":"you@example.com"
      }
   }
}

networking:

The configuration for the cluster network.

Object

networking:
  networkType:

The Red Hat OpenShift Networking network plugin to install.

Either OpenShiftSDN or OVNKubernetes. OpenShiftSDN is a CNI plugin for all-Linux networks. OVNKubernetes is a CNI plugin for Linux networks and hybrid networks that contain both Linux and Windows servers. The default value is OVNKubernetes.

networking:
  clusterNetwork:

The IP address blocks for pods.

The default value is 10.128.0.0/14 with a host prefix of /23.

If you specify multiple IP address blocks, the blocks must not overlap.

An array of objects. For example:

networking:
  clusterNetwork:
  - cidr: 10.128.0.0/14
    hostPrefix: 23

networking:
  clusterNetwork:
    cidr:

Required if you use networking.clusterNetwork. An IP address block.

An IPv4 network.

An IP address block in Classless Inter-Domain Routing (CIDR) notation. The prefix length for an IPv4 block is between 0 and 32.

networking:
  clusterNetwork:
    hostPrefix:

The subnet prefix length to assign to each individual node. For example, if hostPrefix is set to 23 then each node is assigned a /23 subnet out of the given cidr. A hostPrefix value of 23 provides 510 (2^(32 - 23) - 2) pod IP addresses.

A subnet prefix.

The default value is 23.

networking:
  serviceNetwork:

The IP address block for services. The default value is 172.30.0.0/16.

The OpenShift SDN and OVN-Kubernetes network plugins support only a single IP address block for the service network.

An array with an IP address block in CIDR format. For example:

networking:
  serviceNetwork:
   - 172.30.0.0/16

networking:
  machineNetwork:

The IP address blocks for machines.

If you specify multiple IP address blocks, the blocks must not overlap.

An array of objects. For example:

networking:
  machineNetwork:
  - cidr: 10.0.0.0/16

networking:
  machineNetwork:
    cidr:

Required if you use networking.machineNetwork. An IP address block. The default value is 10.0.0.0/16 for all platforms other than libvirt and IBM Power® Virtual Server. For libvirt, the default value is 192.168.126.0/24. For IBM Power® Virtual Server, the default value is 192.168.0.0/24.

An IP network block in CIDR notation.

For example, 10.0.0.0/16.

additionalTrustBundle:

A PEM-encoded X.509 certificate bundle that is added to the nodes' trusted certificate store. This trust bundle may also be used when a proxy has been configured.

String

capabilities:

Controls the installation of optional core cluster components. You can reduce the footprint of your OpenShift Container Platform cluster by disabling optional components. For more information, see the "Cluster capabilities" page in Installing.

String array

capabilities:
  baselineCapabilitySet:

Selects an initial set of optional capabilities to enable. Valid values are None, v4.11, v4.12 and vCurrent. The default value is vCurrent.

String

capabilities:
  additionalEnabledCapabilities:

Extends the set of optional capabilities beyond what you specify in baselineCapabilitySet. You may specify multiple capabilities in this parameter.

String array

cpuPartitioningMode:

Enables workload partitioning, which isolates OpenShift Container Platform services, cluster management workloads, and infrastructure pods to run on a reserved set of CPUs. Workload partitioning can only be enabled during installation and cannot be disabled after installation. While this field enables workload partitioning, it does not configure workloads to use specific CPUs. For more information, see the Workload partitioning page in the Scalability and Performance section.

None or AllNodes. None is the default value.

compute:

The configuration for the machines that comprise the compute nodes.

Array of MachinePool objects.

compute:
  architecture:

Determines the instruction set architecture of the machines in the pool. Currently, clusters with varied architectures are not supported. All pools must specify the same architecture. Valid values are amd64 (the default).

String

compute:
  name:

Required if you use compute. The name of the machine pool.

worker

compute:
  platform:

Required if you use compute. Use this parameter to specify the cloud provider to host the worker machines. This parameter value must match the controlPlane.platform parameter value.

alibabacloud, aws, azure, gcp, ibmcloud, nutanix, openstack, powervs, vsphere, or {}

compute:
  replicas:

The number of compute machines, which are also known as worker machines, to provision.

A positive integer greater than or equal to 2. The default value is 3.

featureSet:

Enables the cluster for a feature set. A feature set is a collection of OpenShift Container Platform features that are not enabled by default. For more information about enabling a feature set during installation, see "Enabling features using feature gates".

String. The name of the feature set to enable, such as TechPreviewNoUpgrade.

controlPlane:

The configuration for the machines that comprise the control plane.

Array of MachinePool objects.

controlPlane:
  architecture:

Determines the instruction set architecture of the machines in the pool. Currently, clusters with varied architectures are not supported. All pools must specify the same architecture. Valid values are amd64 (the default).

String

controlPlane:
  name:

Required if you use controlPlane. The name of the machine pool.

master

controlPlane:
  platform:

Required if you use controlPlane. Use this parameter to specify the cloud provider that hosts the control plane machines. This parameter value must match the compute.platform parameter value.

alibabacloud, aws, azure, gcp, ibmcloud, nutanix, openstack, powervs, vsphere, or {}

controlPlane:
  replicas:

The number of control plane machines to provision.

Supported values are 3, or 1 when deploying single-node OpenShift.

credentialsMode:

The Cloud Credential Operator (CCO) mode. If no mode is specified, the CCO dynamically tries to determine the capabilities of the provided credentials, with a preference for mint mode on the platforms where multiple modes are supported.

Mint, Passthrough, Manual or an empty string (""). ^[1]

fips:

Enable or disable FIPS mode. The default is false (disabled). If FIPS mode is enabled, the Red Hat Enterprise Linux CoreOS (RHCOS) machines that OpenShift Container Platform runs on bypass the default Kubernetes cryptography suite and use the cryptography modules that are provided with RHCOS instead.

false or true

imageContentSources:

Sources and repositories for the release-image content.

Array of objects. Includes a source and, optionally, mirrors, as described in the following rows of this table.

imageContentSources:
  source:

Required if you use imageContentSources. Specify the repository that users refer to, for example, in image pull specifications.

String

imageContentSources:
  mirrors:

Specify one or more repositories that may also contain the same images.

Array of strings

publish:

How to publish or expose the user-facing endpoints of your cluster, such as the Kubernetes API, OpenShift routes.

Internal or External. The default value is External.

Setting this field to Internal is not supported on non-cloud platforms.

sshKey:

The SSH key to authenticate access to your cluster machines.

For example, sshKey: ssh-ed25519 AAAA...

platform:
  vsphere:

Describes your account on the cloud platform that hosts your cluster. You can use the parameter to customize the platform. If you provide additional configuration settings for compute and control plane machines in the machine pool, the parameter is not required. You can only specify one vCenter server for your OpenShift Container Platform cluster.

A dictionary of vSphere configuration objects

platform:
  vsphere:
    apiVIPs:

Virtual IP (VIP) addresses that you configured for control plane API access.

Multiple IP addresses

platform:
  vsphere:
    diskType:

Optional: The disk provisioning method. This value defaults to the vSphere default storage policy if not set.

Valid values are thin, thick, or eagerZeroedThick.

platform:
  vsphere:
    failureDomains:

Establishes the relationships between a region and zone. You define a failure domain by using vCenter objects, such as a datastore object. A failure domain defines the vCenter location for OpenShift Container Platform cluster nodes.

An array of failure domain configuration objects.

platform:
  vsphere:
    failureDomains:
      name:

The name of the failure domain.

String

platform:
  vsphere:
    failureDomains:
      region:

If you define multiple failure domains for your cluster, you must attach the tag to each vCenter datacenter. To define a region, use a tag from the openshift-region tag category. For a single vSphere datacenter environment, you do not need to attach a tag, but you must enter an alphanumeric value, such as datacenter, for the parameter.

String

platform:
  vsphere:
    failureDomains:
      server:

Specifies the fully-qualified hostname or IP address of the VMware vCenter server, so that a client can access failure domain resources. You must apply the server role to the vSphere vCenter server location.

String

platform:
  vsphere:
    failureDomains:
      zone:

If you define multiple failure domains for your cluster, you must attach a tag to each vCenter cluster. To define a zone, use a tag from the openshift-zone tag category. For a single vSphere datacenter environment, you do not need to attach a tag, but you must enter an alphanumeric value, such as cluster, for the parameter.

String

platform:
  vsphere:
    failureDomains:
      topology:
        computeCluster:

The path to the vSphere compute cluster.

String

platform:
  vsphere:
    failureDomains:
      topology:
        datacenter:

Lists and defines the datacenters where OpenShift Container Platform virtual machines (VMs) operate. The list of datacenters must match the list of datacenters specified in the vcenters field.

String

platform:
  vsphere:
    failureDomains:
      topology:
        datastore:

Specifies the path to a vSphere datastore that stores virtual machines files for a failure domain. You must apply the datastore role to the vSphere vCenter datastore location.

String

platform:
  vsphere:
    failureDomains:
      topology:
        folder:

Optional: The absolute path of an existing folder where the user creates the virtual machines, for example, /<datacenter_name>/vm/<folder_name>/<subfolder_name>. If you do not provide this value, the installation program creates a top-level folder in the datacenter virtual machine folder that is named with the infrastructure ID. If you are providing the infrastructure for the cluster and you do not want to use the default StorageClass object, named thin, you can omit the folder parameter from the install-config.yaml file.

String

platform:
  vsphere:
    failureDomains:
      topology:
        networks:

Lists any network in the vCenter instance that contains the virtual IP addresses and DNS records that you configured.

String

platform:
  vsphere:
    failureDomains:
      topology:
        resourcePool:

Optional: The absolute path of an existing resource pool where the installation program creates the virtual machines, for example, /<datacenter_name>/host/<cluster_name>/Resources/<resource_pool_name>/<optional_nested_resource_pool_name>. If you do not specify a value, the installation program installs the resources in the root of the cluster under /<datacenter_name>/host/<cluster_name>/Resources.

String

platform:
  vsphere:
    failureDomains:
      topology
        template:

Specifies the absolute path to a pre-existing Red Hat Enterprise Linux CoreOS (RHCOS) image template or virtual machine. The installation program can use the image template or virtual machine to quickly install RHCOS on vSphere hosts. Consider using this parameter as an alternative to uploading an RHCOS image on vSphere hosts. This parameter is available for use only on installer-provisioned infrastructure.

String

platform:
  vsphere:
    ingressVIPs:

Virtual IP (VIP) addresses that you configured for cluster Ingress.

Multiple IP addresses

platform:
  vsphere:
    vcenters:

Configures the connection details so that services can communicate with a vCenter server. Currently, only a single vCenter server is supported.

An array of vCenter configuration objects.

platform:
  vsphere:
    vcenters:
      datacenters:

Lists and defines the datacenters where OpenShift Container Platform virtual machines (VMs) operate. The list of datacenters must match the list of datacenters specified in the failureDomains field.

String

platform:
  vsphere:
    vcenters:
      password:

The password associated with the vSphere user.

String

platform:
  vsphere:
    vcenters:
      port:

The port number used to communicate with the vCenter server.

Integer

platform:
  vsphere:
    vcenters:
      server:

The fully qualified host name (FQHN) or IP address of the vCenter server.

String

platform:
  vsphere:
    vcenters:
      user:

The username associated with the vSphere user.

String

platform:
  vsphere:
    apiVIP:

The virtual IP (VIP) address that you configured for control plane API access.

An IP address, for example 128.0.0.1.

platform:
  vsphere:
    cluster:

The vCenter cluster to install the OpenShift Container Platform cluster in.

String

platform:
  vsphere:
    datacenter:

Defines the datacenter where OpenShift Container Platform virtual machines (VMs) operate.

String

platform:
  vsphere:
    defaultDatastore:

The name of the default datastore to use for provisioning volumes.

String

platform:
  vsphere:
    folder:

Optional: The absolute path of an existing folder where the installation program creates the virtual machines. If you do not provide this value, the installation program creates a folder that is named with the infrastructure ID in the data center virtual machine folder.

String, for example, /<datacenter_name>/vm/<folder_name>/<subfolder_name>.

platform:
  vsphere:
    ingressVIP:

Virtual IP (VIP) addresses that you configured for cluster Ingress.

An IP address, for example 128.0.0.1.

platform:
  vsphere:
    network:

The network in the vCenter instance that contains the virtual IP addresses and DNS records that you configured.

String

platform:
  vsphere:
    password:

The password for the vCenter user name.

String

platform:
  vsphere:
    resourcePool:

Optional: The absolute path of an existing resource pool where the installation program creates the virtual machines. If you do not specify a value, the installation program installs the resources in the root of the cluster under /<datacenter_name>/host/<cluster_name>/Resources.

String, for example, /<datacenter_name>/host/<cluster_name>/Resources/<resource_pool_name>/<optional_nested_resource_pool_name>.

platform:
  vsphere:
    username:

The user name to use to connect to the vCenter instance with. This user must have at least the roles and privileges that are required for static or dynamic persistent volume provisioning in vSphere.

String

platform:
  vsphere:
    vCenter:

The fully-qualified hostname or IP address of a vCenter server.

String

platform:
  vsphere:
    clusterOSImage:

The location from which the installation program downloads the Red Hat Enterprise Linux CoreOS (RHCOS) image. Before setting a path value for this parameter, ensure that the default RHCOS boot image in the OpenShift Container Platform release matches the RHCOS image template or virtual machine version; otherwise, cluster installation might fail.

An HTTP or HTTPS URL, optionally with a SHA-256 checksum. For example, https://mirror.openshift.com/images/rhcos-<version>-vmware.<architecture>.ova.

platform:
  vsphere:
    osDisk:
      diskSizeGB:

The size of the disk in gigabytes.

Integer

platform:
  vsphere:
    cpus:

The total number of virtual processor cores to assign a virtual machine. The value of platform.vsphere.cpus must be a multiple of platform.vsphere.coresPerSocket value.

Integer

platform:
  vsphere:
    coresPerSocket:

The number of cores per socket in a virtual machine. The number of virtual sockets on the virtual machine is platform.vsphere.cpus/platform.vsphere.coresPerSocket. The default value for control plane nodes and worker nodes is 4 and 2, respectively.

Integer

platform:
  vsphere:
    memoryMB:

The size of a virtual machine’s memory in megabytes.

Integer