+Configure these variables below in `group_vars/common.yml`:\r
+```yaml\r
+opensds_release: v0.1.4 # The version should be at least v0.1.4.\r
+nbp_release: v0.1.0 # The version should be at least v0.1.0.\r
+\r
+container_enabled: <false_or_true>\r
+```\r
+\r
+If you want to integrate OpenSDS with cloud platform (for example k8s), please modify `nbp_plugin_type` variable in `group_vars/common.yml`:\r
+```yaml\r
+nbp_plugin_type: standalone # standalone is the default integration way, but you can change it to 'csi', 'flexvolume'\r
+```\r
+\r
+#### Database configuration\r
+Currently OpenSDS adopts `etcd` as database backend, and the default db endpoint is `localhost:2379,localhost:2380`. But to avoid some conflicts with existing environment (k8s local cluster), we suggest you change the port of etcd cluster in `group_vars/osdsdb.yml`:\r