Red Hat Enterprise Linux CoreOS (RHCOS) represents the next generation of single-purpose container operating system technology. Created by the same development teams that created Red Hat Enterprise Linux Atomic Host and CoreOS Container Linux, RHCOS combines the quality standards of Red Hat Enterprise Linux (RHEL) with the automated, remote upgrade features from Container Linux. RHCOS is supported only as a component of OpenShift Container Platform 4.7 for all OpenShift Container Platform machines.
RHCOS is the only supported operating system for OpenShift Container Platform control plane, or master, machines.
While RHCOS is the default operating system for all cluster machines, you can create compute machines, which are also known as worker machines, that use RHEL as their operating system
Based on RHEL: The underlying operating system consists primarily of RHEL components. The same quality, security, and control measures that support RHEL also support RHCOS.
For example, RHCOS software is in RPM packages, and each RHCOS system starts up with a RHEL kernel and a set of services that are managed by the systemd init system.
@rahulm23 @jboutaud could you please share an update on this issue, what is the ETA to get ARO 4.x support Azure Stack HCI , is it aligned with ARO 4.10 GA ?
Could you please state in the ARO V4 support policy docs , if OCP is also supported on Azure Stack Hub & Azure Stack HCI ?
see also :
Azure Stack HCI is a Hyper-V plateform, like WS 2019. It does support RHEL 7.8 & 7.9.
The OpenShift Container Platform docs does not officially states that it does Azure Stack HCI, Hyper-v neither.
OpenShift Container Platform support policy states : Non-RHCOS compute nodes aren't supported. For example, you can't use a RHEL compute node.
OpenShift Container Platform docs states:
Red Hat Enterprise Linux CoreOS (RHCOS) represents the next generation of single-purpose container operating system technology. Created by the same development teams that created Red Hat Enterprise Linux Atomic Host and CoreOS Container Linux, RHCOS combines the quality standards of Red Hat Enterprise Linux (RHEL) with the automated, remote upgrade features from Container Linux. RHCOS is supported only as a component of OpenShift Container Platform 4.7 for all OpenShift Container Platform machines. RHCOS is the only supported operating system for OpenShift Container Platform control plane, or master, machines. While RHCOS is the default operating system for all cluster machines, you can create compute machines, which are also known as worker machines, that use RHEL as their operating system
Based on RHEL: The underlying operating system consists primarily of RHEL components. The same quality, security, and control measures that support RHEL also support RHCOS.
For example, RHCOS software is in RPM packages, and each RHCOS system starts up with a RHEL kernel and a set of services that are managed by the systemd init system.
See also https://github.com/MicrosoftDocs/azure-docs/issues/75543[https://github.com/MicrosoftDocs/azure-docs/issues/75543](url)
@sakthi-vetrivel @kagowda