71 lines
2.6 KiB
Markdown
71 lines
2.6 KiB
Markdown
---
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reviewers:
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- luxas
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- jbeda
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title: kubeadm config
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content_type: concept
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weight: 50
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---
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<!-- overview -->
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During `kubeadm init`, kubeadm uploads the `ClusterConfiguration` object to your cluster
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in a ConfigMap called `kubeadm-config` in the `kube-system` namespace. This configuration is then read during
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`kubeadm join`, `kubeadm reset` and `kubeadm upgrade`.
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You can use `kubeadm config print` to print the default static configuration that kubeadm
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uses for `kubeadm init` and `kubeadm join`.
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{{< note >}}
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The output of the command is meant to serve as an example. You must manually edit the output
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of this command to adapt to your setup. Remove the fields that you are not certain about and kubeadm
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will try to default them on runtime by examining the host.
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{{< /note >}}
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For more information on `init` and `join` navigate to
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[Using kubeadm init with a configuration file](/docs/reference/setup-tools/kubeadm/kubeadm-init/#config-file)
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or [Using kubeadm join with a configuration file](/docs/reference/setup-tools/kubeadm/kubeadm-join/#config-file).
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For more information on using the kubeadm configuration API navigate to
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[Customizing components with the kubeadm API](/docs/setup/production-environment/tools/kubeadm/control-plane-flags).
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You can use `kubeadm config migrate` to convert your old configuration files that contain a deprecated
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API version to a newer, supported API version.
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`kubeadm config validate` can be used for validating a configuration file.
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`kubeadm config images list` and `kubeadm config images pull` can be used to list and pull the images
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that kubeadm requires.
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<!-- body -->
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## kubeadm config print {#cmd-config-print}
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{{< include "generated/kubeadm_config/kubeadm_config_print.md" >}}
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## kubeadm config print init-defaults {#cmd-config-print-init-defaults}
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{{< include "generated/kubeadm_config/kubeadm_config_print_init-defaults.md" >}}
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## kubeadm config print join-defaults {#cmd-config-print-join-defaults}
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{{< include "generated/kubeadm_config/kubeadm_config_print_join-defaults.md" >}}
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## kubeadm config migrate {#cmd-config-migrate}
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{{< include "generated/kubeadm_config/kubeadm_config_migrate.md" >}}
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## kubeadm config validate {#cmd-config-validate}
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{{< include "generated/kubeadm_config/kubeadm_config_validate.md" >}}
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## kubeadm config images list {#cmd-config-images-list}
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{{< include "generated/kubeadm_config/kubeadm_config_images_list.md" >}}
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## kubeadm config images pull {#cmd-config-images-pull}
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{{< include "generated/kubeadm_config/kubeadm_config_images_pull.md" >}}
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## {{% heading "whatsnext" %}}
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* [kubeadm upgrade](/docs/reference/setup-tools/kubeadm/kubeadm-upgrade/) to upgrade a Kubernetes cluster to a newer version
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