diff --git a/bin/nova-all b/bin/nova-all
index 5c0644b8..6aee8780 100755
--- a/bin/nova-all
+++ b/bin/nova-all
@@ -28,7 +28,7 @@ continue attempting to launch the rest of the services.
 """
 
 import eventlet
-eventlet.monkey_patch()
+eventlet.monkey_patch(os=False)
 
 import os
 import sys
@@ -54,25 +54,26 @@ if __name__ == '__main__':
     flags.parse_args(sys.argv)
     logging.setup()
     utils.monkey_patch()
-    servers = []
+    launcher = service.ProcessLauncher()
+
     # nova-api
     for api in flags.FLAGS.enabled_apis:
         try:
-            servers.append(service.WSGIService(api))
+            server = service.WSGIService(api)
+            launcher.launch_server(server, workers=server.workers or 1)
         except (Exception, SystemExit):
             LOG.exception(_('Failed to load %s') % '%s-api' % api)
 
     for mod in [s3server, xvp_proxy]:
         try:
-            servers.append(mod.get_wsgi_server())
+            launcher.launch_server(mod.get_wsgi_server())
         except (Exception, SystemExit):
             LOG.exception(_('Failed to load %s') % mod.__name__)
 
     for binary in ['nova-compute', 'nova-volume',
                    'nova-network', 'nova-scheduler', 'nova-cert']:
         try:
-            servers.append(service.Service.create(binary=binary))
+            launcher.launch_server(service.Service.create(binary=binary))
         except (Exception, SystemExit):
             LOG.exception(_('Failed to load %s'), binary)
-    service.serve(*servers)
-    service.wait()
+    launcher.wait()
diff --git a/bin/nova-api b/bin/nova-api
index e6779df4..b778854f 100755
--- a/bin/nova-api
+++ b/bin/nova-api
@@ -24,7 +24,7 @@ Starts both the EC2 and OpenStack APIs in separate greenthreads.
 """
 
 import eventlet
-eventlet.monkey_patch()
+eventlet.monkey_patch(os=False)
 
 import os
 import sys
@@ -45,8 +45,8 @@ if __name__ == '__main__':
     flags.parse_args(sys.argv)
     logging.setup()
     utils.monkey_patch()
-    servers = []
+    launcher = service.ProcessLauncher()
     for api in flags.FLAGS.enabled_apis:
-        servers.append(service.WSGIService(api))
-    service.serve(*servers)
-    service.wait()
+        server = service.WSGIService(api)
+        launcher.launch_server(server, workers=server.workers or 1)
+    launcher.wait()
diff --git a/bin/nova-api-ec2 b/bin/nova-api-ec2
index b53c9158..f76f3dd7 100755
--- a/bin/nova-api-ec2
+++ b/bin/nova-api-ec2
@@ -20,7 +20,7 @@
 """Starter script for Nova EC2 API."""
 
 import eventlet
-eventlet.monkey_patch()
+eventlet.monkey_patch(os=False)
 
 import os
 import sys
@@ -42,5 +42,5 @@ if __name__ == '__main__':
     logging.setup()
     utils.monkey_patch()
     server = service.WSGIService('ec2')
-    service.serve(server)
+    service.serve(server, workers=server.workers)
     service.wait()
diff --git a/bin/nova-api-metadata b/bin/nova-api-metadata
index 2f2ef945..2aad9345 100755
--- a/bin/nova-api-metadata
+++ b/bin/nova-api-metadata
@@ -20,7 +20,7 @@
 """Starter script for Nova Metadata API."""
 
 import eventlet
-eventlet.monkey_patch()
+eventlet.monkey_patch(os=False)
 
 import os
 import sys
@@ -42,5 +42,5 @@ if __name__ == '__main__':
     logging.setup()
     utils.monkey_patch()
     server = service.WSGIService('metadata')
-    service.serve(server)
+    service.serve(server, workers=server.workers)
     service.wait()
diff --git a/bin/nova-api-os-compute b/bin/nova-api-os-compute
index 75c92194..c8385525 100755
--- a/bin/nova-api-os-compute
+++ b/bin/nova-api-os-compute
@@ -20,7 +20,7 @@
 """Starter script for Nova OS API."""
 
 import eventlet
-eventlet.monkey_patch()
+eventlet.monkey_patch(os=False)
 
 import os
 import sys
@@ -42,5 +42,5 @@ if __name__ == '__main__':
     logging.setup()
     utils.monkey_patch()
     server = service.WSGIService('osapi_compute')
-    service.serve(server)
+    service.serve(server, workers=server.workers)
     service.wait()
diff --git a/bin/nova-api-os-volume b/bin/nova-api-os-volume
index b93fd51a..f08c6938 100755
--- a/bin/nova-api-os-volume
+++ b/bin/nova-api-os-volume
@@ -20,7 +20,7 @@
 """Starter script for Nova OS API."""
 
 import eventlet
-eventlet.monkey_patch()
+eventlet.monkey_patch(os=False)
 
 import os
 import sys
@@ -42,5 +42,5 @@ if __name__ == '__main__':
     logging.setup()
     utils.monkey_patch()
     server = service.WSGIService('osapi_volume')
-    service.serve(server)
+    service.serve(server, workers=server.workers)
     service.wait()