kubeadm upgrade

    The steps for performing an upgrade using kubeadm are outlined in . For older versions of kubeadm, please refer to older documentation sets of the Kubernetes website.

    You can use kubeadm upgrade diff to see the changes that would be applied to static pod manifests.

    In Kubernetes v1.15.0 and later, kubeadm upgrade apply and will also automatically renew the kubeadm managed certificates on this node, including those stored in kubeconfig files. To opt-out, it is possible to pass the flag --certificate-renewal=false. For more details about certificate renewal see the certificate management documentation.

    Note: The commands kubeadm upgrade apply and have a legacy --config flag which makes it possible to reconfigure the cluster, while performing planning or upgrade of that particular control-plane node. Please be aware that the upgrade workflow was not designed for this scenario and there are reports of unexpected results.

    kubeadm upgrade plan

    Check which versions are available to upgrade to and validate whether your current cluster is upgradeable. To skip the internet check, pass in the optional [version] parameter

    Check which versions are available to upgrade to and validate whether your current cluster is upgradeable. To skip the internet check, pass in the optional [version] parameter

    Options

    Options inherited from parent commands

    —rootfs string

    [EXPERIMENTAL] The path to the ‘real’ host root filesystem.

    Upgrade your Kubernetes cluster to the specified version

    Synopsis

    Options inherited from parent commands

    —rootfs string

    [EXPERIMENTAL] The path to the ‘real’ host root filesystem.

    kubeadm upgrade diff

    Show what differences would be applied to existing static pod manifests. See also: kubeadm upgrade apply —dry-run

    Synopsis

    Show what differences would be applied to existing static pod manifests. See also: kubeadm upgrade apply —dry-run

    Options

    —rootfs string

    [EXPERIMENTAL] The path to the ‘real’ host root filesystem.

    Upgrade commands for a node in the cluster

    Synopsis

    Upgrade commands for a node in the cluster

    The “node” command executes the following phases:

    Options

    Options inherited from parent commands

    —rootfs string

    [EXPERIMENTAL] The path to the ‘real’ host root filesystem.

    What’s next

    • kubeadm config if you initialized your cluster using kubeadm v1.7.x or lower, to configure your cluster for kubeadm upgrade