gcloud container clusters upgrade - upgrade the Kubernetes version of an existing container cluster
gcloud container clusters upgrade NAME [--cluster-version CLUSTER_VERSION] [--wait] [--zone ZONE, -z ZONE] [GLOBAL-FLAG ...]
Upgrades the Kubernetes version of an existing container cluster.
This command upgrades the Kubernetes version of the nodes of a cluster. The Kubernetes version of the clusters master is periodically upgraded automatically as new releases are available.
By running this command, all of the clusters nodes will be deleted and recreated one at a time. While persistent Kubernetes resources, such as pods backed by replication controllers, will be rescheduled onto new nodes, a small cluster may experience a few minutes where there are insufficient nodes available to run all of the scheduled Kubernetes resources.
Please ensure that any data you wish to keep is stored on a persistent disk before upgrading the cluster. Ephemeral Kubernetes resources--in particular, pods without replication controllers--will be lost, while persistent Kubernetes resources will get rescheduled.
NAMEThe name of the cluster to upgrade.
--cluster-version CLUSTER_VERSIONThe Kubernetes release version to which to upgrade the clusters nodes. Omit to upgrade the nodes to the version the clusters Kubernetes master is running.--wait
If provided, the --cluster-version must be no greater than the cluster masters minor version (x.X.x), and must be a latest patch version (x.x.X).
You can find the current master version by running
$ gcloud container clusters describe <cluster> | grep MasterVersion
You can find the list of allowed node versions for upgrades by running
$ gcloud container get-server-config
and looking at the returned "validNodeVersions".
Poll the operation for completion after issuing an upgrade request. Enabled by default, use --no-wait to disable.--zone ZONE, -z ZONE
The compute zone (e.g. us-central1-a) for the cluster
Run $ gcloud help for a description of flags available to all commands.
Upgrade the nodes of <cluster> to the Kubernetes version of the clusters master.
$ gcloud container clusters upgrade <cluster>
Upgrade the nodes of <cluster> to Kubernetes version x.y.z.
$ gcloud container clusters upgrade <cluster> \