You are viewing documentation for Kubernetes version: v1.20
Kubernetes v1.20 documentation is no longer actively maintained. The version you are currently viewing is a static snapshot. For up-to-date documentation, see the latest version.
Performs a best effort revert of changes made by
kubeadm init or
Performs a best effort revert of changes made to this host by 'kubeadm init' or 'kubeadm join'
The "reset" command executes the following phases:
preflight Run reset pre-flight checks update-cluster-status Remove this node from the ClusterStatus object. remove-etcd-member Remove a local etcd member. cleanup-node Run cleanup node.
kubeadm reset [flags]
|--cert-dir string Default: "/etc/kubernetes/pki"|
|The path to the directory where the certificates are stored. If specified, clean this directory.|
|Path to the CRI socket to connect. If empty kubeadm will try to auto-detect this value; use this option only if you have more than one CRI installed or if you have non-standard CRI socket.|
|Reset the node without prompting for confirmation.|
|help for reset|
|A list of checks whose errors will be shown as warnings. Example: 'IsPrivilegedUser,Swap'. Value 'all' ignores errors from all checks.|
|--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.|
|List of phases to be skipped|
Options inherited from parent commands
|[EXPERIMENTAL] The path to the 'real' host root filesystem.|
kubeadm reset is responsible for cleaning up a node local file system from files that were created using
kubeadm init or
kubeadm join commands. For control-plane nodes
reset also removes the local stacked
etcd member of this node from the etcd cluster and also removes this node's information from the kubeadm
ClusterStatus is a kubeadm managed Kubernetes API object that holds a list of kube-apiserver endpoints.
kubeadm reset phase can be used to execute the separate phases of the above workflow.
To skip a list of phases you can use the
--skip-phases flag, which works in a similar way to
kubeadm join and
kubeadm init phase runners.
External etcd clean up
kubeadm reset will not delete any etcd data if external etcd is used. This means that if you run
kubeadm init again using the same etcd endpoints, you will see state from previous clusters.
To wipe etcd data it is recommended you use a client like etcdctl, such as:
etcdctl del "" --prefix
See the etcd documentation for more information.
- kubeadm init to bootstrap a Kubernetes control-plane node
- kubeadm join to bootstrap a Kubernetes worker node and join it to the cluster