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
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:
CoreDNS=true|false (ALPHA - default=false)
DynamicKubeletConfig=true|false (ALPHA - default=false)
HighAvailability=true|false (ALPHA - default=false)
SelfHosting=true|false (BETA - default=false)
StoreCertsInSecrets=true|false (ALPHA - default=false)
SupportIPVSProxyMode=true|false (ALPHA - default=false)
--ignore-checks-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 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.
-f, --force Force upgrading although some requirements might not be met. This also implies non-interactive mode.
--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:
CoreDNS=true|false (ALPHA - default=false)
DynamicKubeletConfig=true|false (ALPHA - default=false)
HighAvailability=true|false (ALPHA - default=false)
SelfHosting=true|false (BETA - default=false)
StoreCertsInSecrets=true|false (ALPHA - default=false)
SupportIPVSProxyMode=true|false (ALPHA - default=false)
--ignore-checks-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 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.
What’s next
- kubeadm config if you initialized your cluster using kubeadm v1.7.x or lower, to configure your cluster for
kubeadm upgrade