74 lines
3.6 KiB
Markdown
74 lines
3.6 KiB
Markdown
---
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title: kubeadm certs
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content_type: concept
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weight: 90
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---
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`kubeadm certs` provides utilities for managing certificates.
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For more details on how these commands can be used, see
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[Certificate Management with kubeadm](/docs/tasks/administer-cluster/kubeadm/kubeadm-certs/).
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## kubeadm certs {#cmd-certs}
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A collection of operations for operating Kubernetes certificates.
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{{< tabs name="tab-certs" >}}
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{{< tab name="overview" include="generated/kubeadm_certs.md" />}}
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{{< /tabs >}}
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## kubeadm certs renew {#cmd-certs-renew}
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You can renew all Kubernetes certificates using the `all` subcommand or renew them selectively.
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For more details see [Manual certificate renewal](/docs/tasks/administer-cluster/kubeadm/kubeadm-certs/#manual-certificate-renewal).
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{{< tabs name="tab-certs-renew" >}}
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{{< tab name="renew" include="generated/kubeadm_certs_renew.md" />}}
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{{< tab name="all" include="generated/kubeadm_certs_renew_all.md" />}}
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{{< tab name="admin.conf" include="generated/kubeadm_certs_renew_admin.conf.md" />}}
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{{< tab name="apiserver-etcd-client" include="generated/kubeadm_certs_renew_apiserver-etcd-client.md" />}}
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{{< tab name="apiserver-kubelet-client" include="generated/kubeadm_certs_renew_apiserver-kubelet-client.md" />}}
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{{< tab name="apiserver" include="generated/kubeadm_certs_renew_apiserver.md" />}}
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{{< tab name="controller-manager.conf" include="generated/kubeadm_certs_renew_controller-manager.conf.md" />}}
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{{< tab name="etcd-healthcheck-client" include="generated/kubeadm_certs_renew_etcd-healthcheck-client.md" />}}
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{{< tab name="etcd-peer" include="generated/kubeadm_certs_renew_etcd-peer.md" />}}
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{{< tab name="etcd-server" include="generated/kubeadm_certs_renew_etcd-server.md" />}}
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{{< tab name="front-proxy-client" include="generated/kubeadm_certs_renew_front-proxy-client.md" />}}
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{{< tab name="scheduler.conf" include="generated/kubeadm_certs_renew_scheduler.conf.md" />}}
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{{< /tabs >}}
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## kubeadm certs certificate-key {#cmd-certs-certificate-key}
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This command can be used to generate a new control-plane certificate key.
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The key can be passed as `--certificate-key` to [`kubeadm init`](/docs/reference/setup-tools/kubeadm/kubeadm-init)
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and [`kubeadm join`](/docs/reference/setup-tools/kubeadm/kubeadm-join)
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to enable the automatic copy of certificates when joining additional control-plane nodes.
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{{< tabs name="tab-certs-certificate-key" >}}
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{{< tab name="certificate-key" include="generated/kubeadm_certs_certificate-key.md" />}}
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{{< /tabs >}}
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## kubeadm certs check-expiration {#cmd-certs-check-expiration}
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This command checks expiration for the certificates in the local PKI managed by kubeadm.
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For more details see
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[Check certificate expiration](/docs/tasks/administer-cluster/kubeadm/kubeadm-certs/#check-certificate-expiration).
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{{< tabs name="tab-certs-check-expiration" >}}
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{{< tab name="check-expiration" include="generated/kubeadm_certs_check-expiration.md" />}}
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{{< /tabs >}}
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## kubeadm certs generate-csr {#cmd-certs-generate-csr}
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This command can be used to generate keys and CSRs for all control-plane certificates and kubeconfig files.
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The user can then sign the CSRs with a CA of their choice.
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{{< tabs name="tab-certs-generate-csr" >}}
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{{< tab name="generate-csr" include="generated/kubeadm_certs_generate-csr.md" />}}
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{{< /tabs >}}
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## {{% heading "whatsnext" %}}
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* [kubeadm init](/docs/reference/setup-tools/kubeadm/kubeadm-init/) to bootstrap a Kubernetes control-plane node
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* [kubeadm join](/docs/reference/setup-tools/kubeadm/kubeadm-join/) to connect a node to the cluster
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* [kubeadm reset](/docs/reference/setup-tools/kubeadm/kubeadm-reset/) to revert any changes made to this host by `kubeadm init` or `kubeadm join`
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