diff --git a/nova/virt/vmwareapi/driver.py b/nova/virt/vmwareapi/driver.py
index 0adb52d..451943d 100644
--- a/nova/virt/vmwareapi/driver.py
+++ b/nova/virt/vmwareapi/driver.py
@@ -163,6 +163,23 @@
         self._vmops = self._resources.get(first_cluster).get('vmops')
         self._volumeops = self._resources.get(first_cluster).get('volumeops')
         self._vc_state = self._resources.get(first_cluster).get('vcstate')
+        
+    def init_host(self, host):
+        vim = self._session.vim
+        if vim is None:
+            self._session._create_session()
+
+    def cleanup_host(self, host):
+        # NOTE(hartsocks): we lean on the init_host to force the vim object
+        # to not be None.
+        vim = self._session.vim
+        service_content = vim.get_service_content()
+        session_manager = service_content.sessionManager
+        try:
+            vim.client.service.Logout(session_manager)
+        except suds.WebFault:
+            LOG.debug("No vSphere session was open during cleanup_host.")
+
 
     def cleanup(self, context, instance, network_info, block_device_info=None,
                 destroy_disks=True, migrate_data=None, destroy_vifs=True):