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kubeadm upgrade

kubeadm upgrade is a user-friendly command that wraps complex upgrading logic behind one command, with support for both planning an upgrade and actually performing it. kubeadm upgrade can also be used for downgrading cluster if necessary.

kubeadm upgrade guidance

Every upgrade process might be a bit different, so we’ve documented each minor upgrade process individually. Please check these documents out for more detailed how-to-upgrade guidance:

kubeadm upgrade plan

Check which versions are available to upgrade to and validate whether your current cluster is upgradeable.

Synopsis

Check which versions are available to upgrade to and validate whether your current cluster is upgradeable.

kubeadm upgrade plan [flags]

Options

  -h, --help   help for plan

Options inherited from parent commands

      --allow-experimental-upgrades        Show unstable versions of Kubernetes as an upgrade alternative and allow upgrading to an alpha/beta/release candidate versions of Kubernetes.
      --allow-release-candidate-upgrades   Show release candidate versions of Kubernetes as an upgrade alternative and allow upgrading to a release candidate versions of Kubernetes.
      --config string                      Path to kubeadm config file. WARNING: Usage of a configuration file is experimental!
      --feature-gates string               A set of key=value pairs that describe feature gates for various features.Options are:
Auditing=true|false (ALPHA - default=false)
CoreDNS=true|false (BETA - default=false)
DynamicKubeletConfig=true|false (ALPHA - default=false)
SelfHosting=true|false (ALPHA - default=false)
StoreCertsInSecrets=true|false (ALPHA - default=false)
      --ignore-preflight-errors strings    A list of checks whose errors will be shown as warnings. Example: 'IsPrivilegedUser,Swap'. Value 'all' ignores errors from all checks.
      --kubeconfig string                  The KubeConfig file to use when talking to the cluster. (default "/etc/kubernetes/admin.conf")
      --print-config                       Specifies whether the configuration file that will be used in the upgrade should be printed or not.

kubeadm upgrade apply

Upgrade your Kubernetes cluster to the specified version.

Synopsis

Upgrade your Kubernetes cluster to the specified version.

kubeadm upgrade apply [version]

Options

      --dry-run                       Do not change any state, just output what actions would be performed.
      --etcd-upgrade                  Perform the upgrade of etcd. (default true)
  -f, --force                         Force upgrading although some requirements might not be met. This also implies non-interactive mode.
  -h, --help                          help for apply
      --image-pull-timeout duration   The maximum amount of time to wait for the control plane pods to be downloaded. (default 15m0s)
  -y, --yes                           Perform the upgrade and do not prompt for confirmation (non-interactive mode).

Options inherited from parent commands

      --allow-experimental-upgrades        Show unstable versions of Kubernetes as an upgrade alternative and allow upgrading to an alpha/beta/release candidate versions of Kubernetes.
      --allow-release-candidate-upgrades   Show release candidate versions of Kubernetes as an upgrade alternative and allow upgrading to a release candidate versions of Kubernetes.
      --config string                      Path to kubeadm config file. WARNING: Usage of a configuration file is experimental!
      --feature-gates string               A set of key=value pairs that describe feature gates for various features.Options are:
Auditing=true|false (ALPHA - default=false)
CoreDNS=true|false (BETA - default=false)
DynamicKubeletConfig=true|false (ALPHA - default=false)
SelfHosting=true|false (ALPHA - default=false)
StoreCertsInSecrets=true|false (ALPHA - default=false)
      --ignore-preflight-errors strings    A list of checks whose errors will be shown as warnings. Example: 'IsPrivilegedUser,Swap'. Value 'all' ignores errors from all checks.
      --kubeconfig string                  The KubeConfig file to use when talking to the cluster. (default "/etc/kubernetes/admin.conf")
      --print-config                       Specifies whether the configuration file that will be used in the upgrade should be printed or not.

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