add en pages

content/en/docs/reference/setup-tools/kubeadm/kubeadm-config.md

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 - luxas
 - jbeda
 title: kubeadm config
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 weight: 50
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 During `kubeadm init`, kubeadm uploads the `ClusterConfiguration` object to your cluster
 in a ConfigMap called `kubeadm-config` in the `kube-system` namespace. This configuration is then read during
 `kubeadm join`, `kubeadm reset` and `kubeadm upgrade`. To view this ConfigMap call `kubeadm config view`.
@@ -19,9 +19,9 @@ In Kubernetes v1.13.0 and later to list/pull kube-dns images instead of the Core
 the `--config` method described [here](/docs/reference/setup-tools/kubeadm/kubeadm-init-phase/#cmd-phase-addon)
 has to be used.
 
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 ## kubeadm config view {#cmd-config-view}
 {{< include "generated/kubeadm_config_view.md" >}}
 
@@ -40,8 +40,9 @@ has to be used.
 ## kubeadm config images pull {#cmd-config-images-pull}
 {{< include "generated/kubeadm_config_images_pull.md" >}}
 
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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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