:_mod-docs-content-type: ASSEMBLY
[id="bare-metal-expanding-the-cluster"]
= Expanding the cluster
include::_attributes/common-attributes.adoc[]
:context: bare-metal-expanding

toc::[]

[role="_abstract"]
You can expand a bare-metal cluster by adding worker nodes after initial deployment to increase capacity and maintain high availability.

[NOTE]
====
Expanding the cluster using Redfish Virtual Media involves meeting minimum firmware requirements. See *Firmware requirements for installing with virtual media* in the *Prerequisites* section for additional details when expanding the cluster using Redfish Virtual Media.
====

include::modules/ipi-install-preparing-the-bare-metal-node.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources

* xref:../../installing/installing_bare_metal/ipi/ipi-install-installation-workflow.adoc#configuring-host-network-interfaces-in-the-install-config-yaml-file_ipi-install-installation-workflow[Optional: Configuring host network interfaces in the install-config.yaml file]

* xref:../../scalability_and_performance/managing-bare-metal-hosts.adoc#automatically-scaling-machines-to-available-bare-metal-hosts_managing-bare-metal-hosts[Automatically scaling machines to the number of available bare-metal hosts]

include::modules/ipi-install-replacing-a-bare-metal-control-plane-node.adoc[leveloffset=+1]

[role="_additional-resources"]
.Additional resources

* xref:../../backup_and_restore/control_plane_backup_and_restore/replacing-unhealthy-etcd-member.adoc#replacing-the-unhealthy-etcd-member[Replacing an unhealthy etcd member]

* xref:../../backup_and_restore/control_plane_backup_and_restore/backing-up-etcd.adoc#backing-up-etcd-data_backup-etcd[Backing up etcd]

* xref:../../installing/installing_bare_metal/bare-metal-postinstallation-configuration.adoc#bmo-config-using-bare-metal-operator_bare-metal-postinstallation-configuration[Configuration using the Bare Metal Operator]

* xref:../../installing/installing_bare_metal/ipi/ipi-install-installation-workflow.adoc#bmc-addressing_ipi-install-installation-workflow[BMC addressing]

include::modules/ipi-install-preparing-to-deploy-with-virtual-media-on-the-baremetal-network.adoc[leveloffset=+1]

include::modules/ipi-install-diagnosing-duplicate-mac-address.adoc[leveloffset=+1]

include::modules/ipi-install-provisioning-the-bare-metal-node.adoc[leveloffset=+1]
