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website/content/en/docs/reference/setup-tools/kubeadm/kubeadm-join-phase.md

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kubeadm join phase 90

In v1.14.0, kubeadm introduces the kubeadm join phase command with the aim of making kubeadm more modular. This modularity enables you to invoke atomic sub-steps of the join process. Hence, you can let kubeadm do some parts and fill in yourself where you need customizations.

kubeadm join phase is consistent with the kubeadm join workflow, and behind the scene both use the same code.

kubeadm join phase

{{< tabs name="tab-phase" >}} {{< tab name="phase" include="generated/kubeadm_join_phase.md" />}} {{< /tabs >}}

kubeadm join phase preflight

Using this phase you can execute preflight checks on a joining node.

{{< tabs name="tab-preflight" >}} {{< tab name="preflight" include="generated/kubeadm_join_phase_preflight.md" />}} {{< /tabs >}}

kubeadm join phase control-plane-prepare

Using this phase you can prepare a node for serving a control-plane.

{{< tabs name="tab-control-plane-prepare" >}} {{< tab name="control-plane-prepare" include="generated/kubeadm_join_phase_control-plane-prepare.md" />}} {{< tab name="all" include="generated/kubeadm_join_phase_control-plane-prepare_all.md" />}} {{< tab name="download-certs" include="generated/kubeadm_join_phase_control-plane-prepare_download-certs.md" />}} {{< tab name="certs" include="generated/kubeadm_join_phase_control-plane-prepare_certs.md" />}} {{< tab name="kubeconfig" include="generated/kubeadm_join_phase_control-plane-prepare_kubeconfig.md" />}} {{< tab name="control-plane" include="generated/kubeadm_join_phase_control-plane-prepare_control-plane.md" />}} {{< /tabs >}}

kubeadm join phase kubelet-start

Using this phase you can write the kubelet settings, certificates and (re)start the kubelet.

{{< tabs name="tab-kubelet-start" >}} {{< tab name="kubelet-start" include="generated/kubeadm_join_phase_kubelet-start.md" />}} {{< /tabs >}}

kubeadm join phase control-plane-join

Using this phase you can join a node as a control-plane instance.

{{< tabs name="tab-control-plane-join" >}} {{< tab name="control-plane-join" include="generated/kubeadm_join_phase_control-plane-join.md" />}} {{< tab name="all" include="generated/kubeadm_join_phase_control-plane-join_all.md" />}} {{< tab name="etcd" include="generated/kubeadm_join_phase_control-plane-join_etcd.md" />}} {{< tab name="update-status" include="generated/kubeadm_join_phase_control-plane-join_update-status.md" />}} {{< tab name="mark-control-plane" include="generated/kubeadm_join_phase_control-plane-join_mark-control-plane.md" />}} {{< /tabs >}}

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