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GKE uses a non-standard FlexVolume directory which is not documented. #2126

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Sep 13, 2018
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GKE uses a non-standard FlexVolume directory which is not documented. #2126

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7 changes: 7 additions & 0 deletions Documentation/flexvolume.md
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Expand Up @@ -11,6 +11,7 @@ This is the case for Kubernetes deployments on:
* [ContainerLinux](https://coreos.com/os/docs/latest/) (previously named CoreOS)
* [OpenShift](https://www.openshift.com/)
* [Rancher](http://rancher.com/)
* [Google Kubernetes Engine (GKE)](https://cloud.google.com/kubernetes-engine/)

Especially in these environments, the kubelet needs to be told to use a different FlexVolume plugin directory that is accessible and read/write (`rw`).
These steps need to be carried out on **all nodes** in your cluster.
Expand Down Expand Up @@ -47,6 +48,12 @@ It can be provided to the kubelet configuration template at deployment time or b

Continue with [configuring the FlexVolume path](#configuring-the-flexvolume-path) to configure Rook to use the FlexVolume path.

### Google Kubernetes Engine (GKE)
Google's Kubernetes Engine uses a non-standard FlexVolume plugin directory: `/home/kubernetes/flexvolume`
The kubelet on GKE is already configured to use that directory.

Continue with [configuring the FlexVolume path](#configuring-the-flexvolume-path) to configure Rook to use the FlexVolume path.

### Tectonic
Follow [these instructions](tectonic.md) to configure the Flexvolume plugin for Rook on Tectonic during ContainerLinux node ignition file provisioning.
If you want to use Rook with an already provisioned Tectonic cluster, please refer to the [ContainerLinux](#containerlinux) section.
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