---
title: "POST /v1/{+name}:updateMaster"
method: POST
path: "/v1/{+name}:updateMaster"
tags: ["projects"]
---

# POST /v1/{+name}:updateMaster

`POST /v1/{+name}:updateMaster`

Updates the master for a specific cluster.

## Path parameters

- `name` string, required

## Request body

- UpdateMasterRequest — UpdateMasterRequest updates the master of the cluster.
  - `masterVersion` string — Required. The Kubernetes version to change the master to. Users may specify either explicit versions offered by Kubernetes Engine or version aliases, which have the following behavior: - "latest": picks the highest valid Kubernetes version - "1.X": picks the highest valid patch+gke.N patch in the 1.X version - "1.X.Y": picks the highest valid gke.N patch in the 1.X.Y version - "1.X.Y-gke.N": picks an explicit Kubernetes version - "-": picks the default Kubernetes version
  - `projectId` string — Deprecated. The Google Developers Console [project ID or project number](https://cloud.google.com/resource-manager/docs/creating-managing-projects). This field has been deprecated and replaced by the name field.
  - `clusterId` string — Deprecated. The name of the cluster to upgrade. This field has been deprecated and replaced by the name field.
  - `name` string — The name (project, location, cluster) of the cluster to update. Specified in the format `projects/*/locations/*/clusters/*`.
  - `zone` string — Deprecated. The name of the Google Compute Engine [zone](https://cloud.google.com/compute/docs/zones#available) in which the cluster resides. This field has been deprecated and replaced by the name field.

## Response `200`

Successful response

---

[API](https://skmtc.net/google/apis/container.md) · [All operations](https://skmtc.net/google/apis/container/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/google/container/versions/f20e7f9e2240/schema)