gcloud_container_clusters_upgrade (1)
NAME
- gcloud container clusters upgrade - upgrade the Kubernetes version of an existing container cluster
SYNOPSIS
-
gcloud container clusters upgrade NAME [--async] [--cluster-version=CLUSTER_VERSION] [--image-type=IMAGE_TYPE] [--master] [--node-pool=NODE_POOL] [--region=REGION | --zone=ZONE, -z ZONE] [GCLOUD_WIDE_FLAG ...]
DESCRIPTION
This command upgrades the Kubernetes version of the nodes or master of a cluster. Note that the Kubernetes version of the cluster's master is also periodically upgraded automatically as new releases are available.
If desired cluster version is omitted, node upgrades default to the current master version and master upgrades default to the default cluster version, which can be found in the server config.
By running this command, all of the cluster's 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.
POSITIONAL ARGUMENTS
-
- NAME
-
The name of the cluster to upgrade.
FLAGS
-
- --async
-
Don't wait for the operation to complete.
- --cluster-version=CLUSTER_VERSION
-
The Kubernetes release version to which to upgrade the cluster's nodes.
If desired cluster version is omitted, node upgrades default to the current master version and master upgrades default to the default cluster version, which can be found in the server config.
You can find the list of allowed versions for upgrades by running:
- $ gcloud container get-server-config
- --image-type=IMAGE_TYPE
-
The image type to use for the cluster/node pool. Defaults to server-specified.
Image Type specifies the base OS that the nodes in the cluster/node pool will run on. If an image type is specified, that will be assigned to the cluster/node pool and all future upgrades will use the specified image type. If it is not specified the server will pick the default image type.
The default image type and the list of valid image types are available using the following command.
- $ gcloud container get-server-config
- --master
-
Upgrade the cluster's master to the latest version of Kubernetes supported on
Kubernetes Engine. Nodes cannot be upgraded at the same time as the master.
- --node-pool=NODE_POOL
-
The node pool to upgrade.
-
At most one of these may be specified:
-
- --region=REGION
-
Compute region (e.g. us-central1) for the cluster.
- --zone=ZONE, -z ZONE
-
Compute zone (e.g. us-central1-a) for the cluster. Overrides the default
compute/zone property value for this command invocation.
-
GCLOUD WIDE FLAGS
These flags are available to all commands: --account, --configuration, --flags-file, --flatten, --format, --help, --log-http, --project, --quiet, --trace-token, --user-output-enabled, --verbosity. Run $ gcloud help for details.
EXAMPLES
Upgrade the nodes of <cluster> to the Kubernetes version of the cluster's master.
- $ gcloud container clusters upgrade <cluster>
Upgrade the nodes of <cluster> to Kubernetes version x.y.z:
-
$ gcloud container clusters upgrade <cluster> \
--cluster-version "x.y.z"
Upgrade the master of <cluster> to the default cluster version:
- $ gcloud container clusters upgrade <cluster> --master"
NOTES
These variants are also available:
- $ gcloud alpha container clusters upgrade $ gcloud beta container clusters upgrade