You are viewing documentation for Kubernetes version: v1.31
Kubernetes v1.31 documentation is no longer actively maintained. The version you are currently viewing is a static snapshot. For up-to-date information, see the latest version.
Create bootstrap tokens on the server
Synopsis
This command will create a bootstrap token for you. You can specify the usages for this token, the "time to live" and an optional human friendly description.
The [token] is the actual token to write. This should be a securely generated random token of the form "[a-z0-9]{6}.[a-z0-9]{16}". If no [token] is given, kubeadm will generate a random token instead.
kubeadm token create [token]
Options
| --certificate-key string | |
When used together with '--print-join-command', print the full 'kubeadm join' flag needed to join the cluster as a control-plane. To create a new certificate key you must use 'kubeadm init phase upload-certs --upload-certs'. | |
| --config string | |
Path to a kubeadm configuration file. | |
| --description string | |
A human friendly description of how this token is used. | |
| --groups strings Default: "system:bootstrappers:kubeadm:default-node-token" | |
Extra groups that this token will authenticate as when used for authentication. Must match "\Asystem:bootstrappers:[a-z0-9:-]{0,255}[a-z0-9]\z" | |
| -h, --help | |
help for create | |
| --print-join-command | |
Instead of printing only the token, print the full 'kubeadm join' flag needed to join the cluster using the token. | |
| --ttl duration Default: 24h0m0s | |
The duration before the token is automatically deleted (e.g. 1s, 2m, 3h). If set to '0', the token will never expire | |
| --usages strings Default: "signing,authentication" | |
Describes the ways in which this token can be used. You can pass --usages multiple times or provide a comma separated list of options. Valid options: [signing,authentication] | |
Options inherited from parent commands
| --dry-run | |
Whether to enable dry-run mode or not | |
| --kubeconfig string Default: "/etc/kubernetes/admin.conf" | |
The kubeconfig file to use when talking to the cluster. If the flag is not set, a set of standard locations can be searched for an existing kubeconfig file. | |
| --rootfs string | |
The path to the 'real' host root filesystem. This will cause kubeadm to chroot into the provided path. | |