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# CSI RBD Plugin # CSI RBD Plugin
The RBD CSI plugin is able to provision new RBD images and attach and mount those to worlkoads. The RBD CSI plugin is able to provision new RBD images and attach and mount those to workloads.
## Building ## Building
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`--metadatastorage` | _empty_ | Whether should metadata be kept on node as file or in a k8s configmap (`node` or `k8s_configmap`) `--metadatastorage` | _empty_ | Whether should metadata be kept on node as file or in a k8s configmap (`node` or `k8s_configmap`)
**Available environmental variables:** **Available environmental variables:**
`HOST_ROOTFS`: rbdplugin searches `/proc` directory under the directory set by `HOST_ROOTFS`. `HOST_ROOTFS`: rbdplugin searches `/proc` directory under the directory set by `HOST_ROOTFS`.
`KUBERNETES_CONFIG_PATH`: if you use `k8s_configmap` as metadata store, specify the path of your k8s config file (if not specified, the plugin will assume you're running it inside a k8s cluster and find the config itself). `KUBERNETES_CONFIG_PATH`: if you use `k8s_configmap` as metadata store, specify the path of your k8s config file (if not specified, the plugin will assume you're running it inside a k8s cluster and find the config itself).