Bug 2090487

Summary:	Change default SNO Networking Type and disallow OpenShiftSDN a supported networking Type
Product:	OpenShift Container Platform	Reporter:	sdasu
Component:	Installer	Assignee:	sdasu
Installer sub component:	Single Node OpenShift	QA Contact:	Omri Hochman <ohochman>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	medium
Priority:	medium	CC:	gpei
Version:	4.11
Target Milestone:	---
Target Release:	4.11.0
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-08-10 11:14:11 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description sdasu 2022-05-25 20:31:08 UTC

A majority of Single Node OpenShift (SNO) deployments need to support IPv6 in their deployments and due to that customers should be allowed to only specify OVNKubernetes as the NetworkType in the install-configs.

The current default networkType for SNO deployments is OpenShiftSDN. So, we also need to change the default just for this deployment type (for now) to OVNKubernetes.

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Version:
4.11

$ openshift-install version
<your output here>

Platform:

#Please specify the platform type: aws, libvirt, openstack or baremetal etc.

Please specify:
* IPI (automated install with `openshift-install`. If you don't know, then it's IPI)
* UPI (semi-manual installation on customized infrastructure)

What happened?

#Enter text here.

#See the troubleshooting documentation (https://github.com/openshift/installer/blob/master/docs/user/troubleshooting.md) for ideas about what information to collect.

#For example,

# If the installer fails to create resources (https://github.com/openshift/installer/blob/master/docs/user/troubleshooting.md#installer-fails-to-create-resources), attach the relevant portions of your `.openshift_install.log.`
# If the installer fails to bootstrap the cluster (https://github.com/openshift/installer/blob/master/docs/user/troubleshootingbootstrap.md), attach the bootstrap log bundle.
# If the installer fails to complete installation after bootstrapping completes (https://github.com/openshift/installer/blob/master/docs/user/troubleshooting.md#installer-fails-to-initialize-the-cluster), attach the must-gather log bundle using `oc adm must-gather`

# Always at least include the `.openshift_install.log`

What did you expect to happen?

#Enter text here.

How to reproduce it (as minimally and precisely as possible)?

$ your-commands-here

Anything else we need to know?

#Enter text here.

Comment 5 Gaoyun Pei 2022-07-14 03:27:50 UTC

Had a check with ./openshift-install 4.11.0-0.nightly-2022-07-13-131410

The explanation of networkType has been updated as following:

# ./openshift-install explain installconfig.networking.networkType
KIND:     InstallConfig
VERSION:  v1

RESOURCE: <string>
  NetworkType is the type of network to install. The default value is OVNKubernetes for Single Node OpenShift and OpenShiftSDN for all other platforms.




When no networkType set in install-config.yaml, creating manifests for the SNO cluster, the networkType was set to OVNKubernetes by default:

# grep networkType *
cluster-config.yaml:      networkType: OVNKubernetes
cluster-network-01-crd.yml:                networkType:
cluster-network-01-crd.yml:                    networkType:
cluster-network-01-crd.yml:                networkType:
cluster-network-02-config.yml:  networkType: OVNKubernetes



When setting networkType to OpenShiftSDN for the SNO cluster, it will fail as following:

07-14 11:08:45.922  [INFO] Generating manifests files.....
07-14 11:08:45.922  level=error msg=failed to fetch Master Machines: failed to load asset "Install Config": failed to create install config: invalid "install-config.yaml" file: networking.networkType: Invalid value: "OpenShiftSDN": networkType OpenShiftSDN is currently not supported on Single Node OpenShift

Comment 6 errata-xmlrpc 2022-08-10 11:14:11 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Important: OpenShift Container Platform 4.11.0 bug fix and security update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2022:5069