# Administration with kubeadm

LLMS index: [llms.txt](/llms.txt)

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If you don't yet have a cluster, visit
[bootstrapping clusters with `kubeadm`](/docs/setup/production-environment/tools/kubeadm/).

The tasks in this section are aimed at people administering an existing cluster:

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Section pages:

- [Adding Linux worker nodes](/docs/tasks/administer-cluster/kubeadm/adding-linux-nodes/)
- [Adding Windows worker nodes](/docs/tasks/administer-cluster/kubeadm/adding-windows-nodes/)
- [Upgrading kubeadm clusters](/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/)
- [Upgrading Linux nodes](/docs/tasks/administer-cluster/kubeadm/upgrading-linux-nodes/)
- [Upgrading Windows nodes](/docs/tasks/administer-cluster/kubeadm/upgrading-windows-nodes/)
- [Configuring a cgroup driver](/docs/tasks/administer-cluster/kubeadm/configure-cgroup-driver/)
- [Certificate Management with kubeadm](/docs/tasks/administer-cluster/kubeadm/kubeadm-certs/)
- [Reconfiguring a kubeadm cluster](/docs/tasks/administer-cluster/kubeadm/kubeadm-reconfigure/)
- [Changing The Kubernetes Package Repository](/docs/tasks/administer-cluster/kubeadm/change-package-repository/)