# Upgrade workflow

**URL:** <https://forums.suse.com/t/upgrade-workflow/15615>\
**Category:** SUSE Rancher Prime\
**Created:** [October 23, 2019, 12:25pm UTC](https://forums.suse.com/t/upgrade-workflow/15615 "2019-10-23T12:25:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pcasis](https://sea2.discourse-cdn.com/flex022/user_avatar/forums.suse.com/pcasis/32/5494_2.png) [@pcasis](https://forums.suse.com/u/pcasis)\
**Post date:** [October 23, 2019, 12:25pm UTC](https://forums.suse.com/t/upgrade-workflow/15615/1 "2019-10-23T12:25:44Z")

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Hello,

I’m looking on how I can update a Kubernetes cluster launched with Rancher.  
I’ve done a Rancher update which was pretty simple and well documented.

Now, I’m looking to upgrade the K8s cluster. I’ve read the documentation and is looks easy to do.  
However : It seems that, after clicking on Save, the cluster won’t be available.

From the documentation :

1. From the **Global** view, find the cluster for which you want to upgrade Kubernetes. Select **Vertical Ellipsis (…) \> Edit**.
2. Expand **Cluster Options**.
3. From the **Kubernetes Version** drop-down, choose the version of Kubernetes that you want to use for the cluster.
4. Click **Save**.  
**Result:** Kubernetes begins upgrading for the cluster. During the upgrade, your cluster is unavailable.

What is the workflow of an upgrade ? Are all the worker nodes stopped ? Are they stopped and updated one by one ?

Thanks in advance.