5502: Node Manager attaches a local SSD to GCE compute nodes.

[arvados.git] / services / nodemanager / arvnodeman / computenode / driver / gce.py

diff --git a/services/nodemanager/arvnodeman/computenode/driver/gce.py b/services/nodemanager/arvnodeman/computenode/driver/gce.py
index 6380d0e342780f418ef3bfa878b0c79c24268377..36bfc96213b9888df3a9afb7bd9c37fd6b76d4e1 100644 (file)
--- a/services/nodemanager/arvnodeman/computenode/driver/gce.py
+++ b/services/nodemanager/arvnodeman/computenode/driver/gce.py
@@ -34,11 +34,17 @@ class ComputeNodeDriver(BaseComputeNodeDriver):
         super(ComputeNodeDriver, self).__init__(
             auth_kwargs, list_kwargs, create_kwargs,
             driver_class)
+        self._disktype_links = {dt.name: self._object_link(dt)
+                                for dt in self.real.ex_list_disktypes()}
 
     @staticmethod
     def _name_key(cloud_object):
         return cloud_object.name
 
+    @staticmethod
+    def _object_link(cloud_object):
+        return cloud_object.extra.get('selfLink')
+
     def _init_image(self, image_name):
         return 'image', self.search_for(
             image_name, 'list_images', self._name_key)
@@ -59,14 +65,39 @@ class ComputeNodeDriver(BaseComputeNodeDriver):
 
     def arvados_create_kwargs(self, arvados_node):
         cluster_id, _, node_id = arvados_node['uuid'].split('-')
-        result = {'name': 'compute-{}-{}'.format(node_id, cluster_id),
+        name = 'compute-{}-{}'.format(node_id, cluster_id)
+        disks = [
+            {'autoDelete': True,
+             'boot': True,
+             'deviceName': name,
+             'initializeParams':
+                 {'diskName': name,
+                  'diskType': self._disktype_links['pd-standard'],
+                  'sourceImage': self._object_link(self.create_kwargs['image']),
+                  },
+             'type': 'PERSISTENT',
+             },
+            {'autoDelete': True,
+             'boot': False,
+             # Boot images rely on this device name to find the SSD.
+             # Any change must be coordinated in the image.
+             'deviceName': 'tmp',
+             'initializeParams':
+                 {'diskType': self._disktype_links['local-ssd'],
+                  },
+             'type': 'SCRATCH',
+             },
+            ]
+        result = {'name': name,
                   'ex_metadata': self.create_kwargs['ex_metadata'].copy(),
-                  'ex_tags': list(self.node_tags)}
-        result['ex_metadata']['arv-ping-url'] = self._make_ping_url(
-            arvados_node)
-        result['ex_metadata']['booted_at'] = time.strftime(ARVADOS_TIMEFMT,
-                                                           time.gmtime())
-        result['ex_metadata']['hostname'] = arvados_node_fqdn(arvados_node)
+                  'ex_tags': list(self.node_tags),
+                  'ex_disks_gce_struct': disks,
+                  }
+        result['ex_metadata'].update({
+                'arv-ping-url': self._make_ping_url(arvados_node),
+                'booted_at': time.strftime(ARVADOS_TIMEFMT, time.gmtime()),
+                'hostname': arvados_node_fqdn(arvados_node),
+                })
         return result
 
     def list_nodes(self):