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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. For more detailed how-to-upgrade guidance for each version, see the following resources:

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 stringSlice
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.
--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     Default: true
Perform the upgrade of etcd.
-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     Default: 15m0s
The maximum amount of time to wait for the control plane pods to be downloaded.
-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 stringSlice
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.
--print-config
Specifies whether the configuration file that will be used in the upgrade should be printed or not.

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

kubeadm upgrade diff [version] [flags]

Options

      --api-server-manifest string           path to API server manifest (default "/etc/kubernetes/manifests/kube-apiserver.yaml")
  -c, --context-lines int                    How many lines of context in the diff (default 3)
      --controller-manager-manifest string   path to controller manifest (default "/etc/kubernetes/manifests/kube-controller-manager.yaml")
  -h, --help                                 help for diff
      --scheduler-manifest string            path to scheduler manifest (default "/etc/kubernetes/manifests/kube-scheduler.yaml")

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 (default=true)
                                           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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