diff --git a/modules/etcd-node-scaling.adoc b/modules/etcd-node-scaling.adoc index f0fa26356b..6be33192b8 100644 --- a/modules/etcd-node-scaling.adoc +++ b/modules/etcd-node-scaling.adoc @@ -6,11 +6,11 @@ [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 nodes as a post-installation task. For example, to scale from 3 to 4 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 node. +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. -Scaling to 4-node or 5-node clusters is available only on bare metal platforms. +Scaling a cluster to 4 or 5 control plane nodes is available only on bare metal platforms. -For more information about how to scale from 3 to 4 nodes by using the Assisted Installer, see "Adding hosts with the API" and "Installing a primary control plane node on a healthy cluster". +For more information about how to scale control plane nodes by using the Assisted Installer, see "Adding hosts with the API" and "Installing a primary control plane node on a healthy cluster". The following table shows failure tolerance for clusters of different sizes: