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Code Issues Releases Activity

OSDOCS-11236: Add guidance about dual-stack networking limitations

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dfitzmau
2024-07-25 11:51:44 +01:00
parent 65518c9b4a
commit 49cd6e2e2f
2 changed files with 19 additions and 5 deletions
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7
installing/installing_bare_metal/installation-config-parameters-bare-metal.adoc
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@@ -10,3 +10,10 @@ toc::[]
Before you deploy an {product-title} cluster, you provide a customized `install-config.yaml` installation configuration file that describes the details for your environment.
include::modules/installation-configuration-parameters.adoc[leveloffset=+1]
[role="_additional-resources"]
.Additional resources
* xref:../../networking/ovn_kubernetes_network_provider/about-ovn-kubernetes.adoc#nw-ovn-kubernetes-limitations_about-ovn-kubernetes[OVN-Kubernetes IPv6 and dual-stack limitations]

17
modules/installation-configuration-parameters.adoc
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@@ -192,7 +192,12 @@ Only IPv4 addresses are supported.
endif::agent,bare,ibm-power,ibm-z,vsphere[]
ifdef::agent,bare,ibm-power,ibm-z,vsphere[]
Consider the following information before you configure network parameters for your cluster:
* If you use the {openshift-networking} OVN-Kubernetes network plugin, both IPv4 and IPv6 address families are supported.
* If you deployed nodes in an {product-title} cluster with a network that supports both IPv4 and non-link-local IPv6 addresses, configure your cluster to use a dual-stack network.
** For clusters configured for dual-stack networking, both IPv4 and IPv6 traffic must use the same network interface as the default gateway. This ensures that in a multiple network interface controller (NIC) environment, a cluster can detect what NIC to use based on the available network interface. For more information, see "OVN-Kubernetes IPv6 and dual-stack limitations" in _About the OVN-Kubernetes network plugin_.
** To prevent network connectivity issues, do not install a single-stack IPv4 cluster on a host that supports dual-stack networking.
ifdef::ibm-cloud[]
[NOTE]
@@ -631,7 +636,12 @@ endif::agent[]
|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]^
[NOTE]
====
Not all CCO modes are supported for all cloud providers. For more information about CCO modes, see the "Managing cloud provider credentials" entry in the _Authentication and authorization_ content.
====
|`Mint`, `Passthrough`, `Manual` or an empty string (`""`).
ifndef::openshift-origin,ibm-power-vs[]
|fips:
@@ -762,9 +772,7 @@ ifdef::ibm-power-vs[]
|The system type must be either `e980` or `s922`.
endif::ibm-power-vs[]
|====
[.small]
--
1. Not all CCO modes are supported for all cloud providers. For more information about CCO modes, see the "Managing cloud provider credentials" entry in the _Authentication and authorization_ content.
ifdef::aws,gcp[]
+
[NOTE]
@@ -780,7 +788,6 @@ ifdef::aws,gcp,azure[]
Setting this parameter to `Manual` enables alternatives to storing administrator-level secrets in the `kube-system` project, which require additional configuration steps. For more information, see "Alternatives to storing administrator-level secrets in the kube-system project".
====
endif::aws,gcp,azure[]
--
ifdef::aws[]
[id="installation-configuration-parameters-optional-aws_{context}"]