Upload a configuration file to the in-cluster ConfigMap for kubeadm configuration.
### Synopsis
Using this command, you can upload configuration to the ConfigMap in the cluster using the same config file you gave to 'kubeadm init'.
If you initialized your cluster using a v1.7.x or lower kubeadm client and used the --config option, you need to run this command with the
same config file before upgrading to v1.8 using 'kubeadm upgrade'.
The configuration is located in the "kube-system" namespace in the "kubeadm-config" ConfigMap.
```
kubeadm config upload from-file [flags]
```
### Options
--config string |
| Path to a kubeadm config file. WARNING: Usage of a configuration file is experimental. |
-h, --help |
| help for from-file |
### Options inherited from parent commands
--kubeconfig string Default: "/etc/kubernetes/admin.conf" |
| The KubeConfig file to use when talking to the cluster. |