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OSDOCS-12786: 4/5 node support for ABI

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This commit is contained in:
Sebastian Kopacz
2024-12-05 16:26:39 -05:00
committed by openshift-cherrypick-robot
parent ee5c17d313
commit ddace4ddfc
3 changed files with 9 additions and 3 deletions
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4
modules/etcd-node-scaling.adoc
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@@ -6,7 +6,9 @@
[id="etcd-node-scaling_{context}"]
= Node scaling for etcd
In general, clusters must have 3 control plane nodes. However, if your cluster is installed on a bare metal platform, you can scale a cluster up to 5 control plane nodes as a postinstallation task. For example, to scale from 3 to 4 control plane nodes after installation, you can add a host and install it as a control plane node. Then, the etcd Operator scales accordingly to account for the additional control plane node.
In general, clusters must have 3 control plane nodes. However, if your cluster is installed on a bare metal platform, it can have up to 5 control plane nodes. If an existing bare-metal cluster has fewer than 5 control plane nodes, you can scale the cluster up as a postinstallation task.
For example, to scale from 3 to 4 control plane nodes after installation, you can add a host and install it as a control plane node. Then, the etcd Operator scales accordingly to account for the additional control plane node.
Scaling a cluster to 4 or 5 control plane nodes is available only on bare metal platforms.

5
modules/installation-configuration-parameters.adoc
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@@ -629,7 +629,12 @@ endif::agent[]
|controlPlane:
replicas:
|The number of control plane machines to provision.
ifndef::agent[]
|Supported values are `3`, or `1` when deploying {sno}.
endif::agent[]
ifdef::agent[]
|Supported values are `3`, `4`, `5`, or `1` when deploying {sno}.
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.

3
modules/understanding-agent-install.adoc
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@@ -58,10 +58,9 @@ Recommended cluster resources for the following topologies:
|Topology|Number of control plane nodes|Number of compute nodes|vCPU|Memory|Storage
|Single-node cluster|1|0|8 vCPUs|16 GB of RAM| 120 GB
|Compact cluster|3|0 or 1|8 vCPUs|16 GB of RAM|120 GB
|HA cluster|3|2 and above |8 vCPUs|16 GB of RAM|120 GB
|HA cluster|3 to 5|2 and above |8 vCPUs|16 GB of RAM|120 GB
|====
In the `install-config.yaml`, specify the platform on which to perform the installation. The following platforms are supported:
* `baremetal`