Longhorn CSI on GKE

To operate Longhorn on a cluster provisioned with Google Kubernetes Engine, some additional configuration is required.

1. GKE clusters must use the Ubuntu OS instead of Container-Optimized OS, in order to satisfy Longhorn’s open-iscsi dependency.

2. GKE requires a user to manually claim themselves as cluster admin to enable role-based access control. Before installing Longhorn, run the following command:

   kubectl create clusterrolebinding cluster-admin-binding --clusterrole=cluster-admin --user=<name@example.com>

   where name@example.com is the user’s account name in GCE. It’s case sensitive. See this document for more information.

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