Red Hat SummitChapitre 24. Installing on VMC
24.1. Preparing to install on VMC
24.1.1. Conditions préalables
- You reviewed details about the OpenShift Container Platform installation and update processes.
- You read the documentation on selecting a cluster installation method and preparing it for users.
- If you use a firewall and plan to use Telemetry, you configured the firewall to allow the sites required by your cluster.
24.1.2. Choosing a method to install OpenShift Container Platform on VMC
You can install OpenShift Container Platform on VMC by using installer-provisioned or user-provisioned infrastructure. The default installation type uses installer-provisioned infrastructure, where the installation program provisions the underlying infrastructure for the cluster. You can also install OpenShift Container Platform on infrastructure that you provide. If you do not use infrastructure that the installation program provisions, you must manage and maintain the cluster resources yourself.
See the Installation process for more information about installer-provisioned and user-provisioned installation processes.
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 VMC platform and the installation process of OpenShift Container Platform. Use the user-provisioned infrastructure installation instructions as a guide; you are free to create the required resources through other methods.
24.1.2.1. Installer-provisioned infrastructure installation of OpenShift Container Platform on VMC
Installer-provisioned infrastructure allows the installation program to pre-configure and automate the provisioning of resources required by OpenShift Container Platform.
- Installing a cluster on VMC: You can install OpenShift Container Platform on VMC by using installer-provisioned infrastructure installation with no customization.
- Installing a cluster on VMC with customizations: You can install OpenShift Container Platform on VMC by using installer-provisioned infrastructure installation with the default customization options.
- Installing a cluster on VMC with network customizations: You can install OpenShift Container Platform on installer-provisioned VMC infrastructure, with network customizations. You can customize your OpenShift Container Platform network configuration during installation, so that your cluster can coexist with your existing IP address allocations and adhere to your network requirements.
- Installing a cluster on VMC in a restricted network: You can install a cluster on VMC infrastructure in a restricted network by creating an internal mirror of the installation release content. You can use this method to deploy OpenShift Container Platform on an internal network that is not visible to the internet.
24.1.2.2. User-provisioned infrastructure installation of OpenShift Container Platform on VMC
User-provisioned infrastructure requires the user to provision all resources required by OpenShift Container Platform.
- Installing a cluster on VMC with user-provisioned infrastructure: You can install OpenShift Container Platform on VMC infrastructure that you provision.
- Installing a cluster on VMC with user-provisioned infrastructure and network customizations: You can install OpenShift Container Platform on VMC infrastructure that you provision with customized network configuration options.
- Installing a cluster on VMC in a restricted network with user-provisioned infrastructure: OpenShift Container Platform can be installed on VMC infrastructure that you provision in a restricted network.
24.1.3. VMware vSphere infrastructure requirements
You must install the OpenShift Container Platform cluster on a VMware vSphere version 7 instance that meets the requirements for the components that you use.
| Virtual environment product | Required version |
|---|---|
| VMware virtual hardware | 15 or later |
| vSphere ESXi hosts | 7.0 Update 2 or later |
| vCenter host | 7.0 Update 2 or later |
Installing a cluster on VMware vSphere versions 7.0 and 7.0 Update 1 is deprecated. These versions are still fully supported, but all vSphere 6.x versions are no longer supported. Version 4.12 of OpenShift Container Platform requires VMware virtual hardware version 15 or later. To update the hardware version for your vSphere virtual machines, see the "Updating hardware on nodes running in vSphere" article in the Updating clusters section.
| Composant | Minimum supported versions | Description |
|---|---|---|
| Hypervisor | vSphere 7.0 Update 2 and later with virtual hardware version 15 | This version is the minimum version that Red Hat Enterprise Linux CoreOS (RHCOS) supports. See the Red Hat Enterprise Linux 8 supported hypervisors list. |
| Storage with in-tree drivers | vSphere 7.0 Update 2 and later | This plugin creates vSphere storage by using the in-tree storage drivers for vSphere included in OpenShift Container Platform. |
You must ensure that the time on your ESXi hosts is synchronized before you install OpenShift Container Platform. See Edit Time Configuration for a Host in the VMware documentation.
24.1.4. VMware vSphere CSI Driver Operator requirements
To install the CSI Driver Operator, the following requirements must be met:
- VMware vSphere version 7.0 Update 2 or later
- vCenter 7.0 Update 2 or later
- Virtual machines of hardware version 15 or later
- No third-party CSI driver already installed in the cluster
If a third-party CSI driver is present in the cluster, OpenShift Container Platform does not overwrite it. The presence of a third-party CSI driver prevents OpenShift Container Platform from upgrading to OpenShift Container Platform 4.13 or later.
24.1.5. Uninstalling an installer-provisioned infrastructure installation of OpenShift Container Platform on VMC
- Uninstalling a cluster on VMC that uses installer-provisioned infrastructure: You can remove a cluster that you deployed on VMC infrastructure that used installer-provisioned infrastructure.
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