c640ada0cb
Part 2 of 6: blueprint general-bare-metal-provisioning-framework In baremetal provisioning, one nova-compute manages multiple bare-metal machines. A bare-metal machine does not run openstack at all. Previously, bare-metal provisioning used text files to store information of bare-metal machines. In this patch, a MySQL database is used to store the information. We target only MySQL database. The DB is designed to support PXE/non-PXE booting methods, heterogeneous hypervisor types, and architectures. Using a MySQL database makes maintenance and upgrades easier than using text files. The DB for bare-metal machines is implemented as a separate DB from the main Nova DB. The DB can be on any machines/places. The location of the DB and its server needs to be specified as a flag in the nova.conf file (as in the case of glance). There are a couple of reasons for this approach. First, the information needed for bare-metal machines is different from that for non-bare-metal machines. With a separate database for bare-metal machines, the database can be customized without affecting the main Nova DB. Second, fault tolerance can be embedded in nova-compute. Since one nova-compute manages multiple bare-metal machines, fault tolerance of a nova-compute node is very important. With a separate DB for bare-metal machines, fault-tolerance can be achieved independently from the main Nova DB. Replication of the bare-metal DB and implementation of fault-tolerance are not part of this patch. The implementation models nova and its DB as much as possible. The bare-metal driver must be upgraded to use this DB. Change-Id: I7b7ba1903a672a50c567f95fc6554d119463b0c5 Co-authored-by: Mikyung Kang <mkkang@isi.edu> Co-authored-by: David Kang <dkang@isi.edu> Co-authored-by: Ken Igarashi <igarashik@nttdocomo.co.jp> Co-authored-by: Arata Notsu <notsu@virtualtech.jp>
141 lines
5.0 KiB
Python
141 lines
5.0 KiB
Python
# Copyright (c) 2012 NTT DOCOMO, INC.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Bare-Metal DB testcase for BareMetalNode
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"""
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from nova.tests.baremetal.db import base
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from nova.tests.baremetal.db import utils
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from nova.virt.baremetal import db
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class BareMetalNodesTestCase(base.BMDBTestCase):
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def _create_nodes(self):
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nodes = [
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utils.new_bm_node(pm_address='0', service_host="host1",
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memory_mb=100000, cpus=100, local_gb=10000),
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utils.new_bm_node(pm_address='1', service_host="host2",
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instance_uuid='A',
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memory_mb=100000, cpus=100, local_gb=10000),
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utils.new_bm_node(pm_address='2', service_host="host2",
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memory_mb=1000, cpus=1, local_gb=1000),
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utils.new_bm_node(pm_address='3', service_host="host2",
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memory_mb=1000, cpus=2, local_gb=1000),
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utils.new_bm_node(pm_address='4', service_host="host2",
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memory_mb=2000, cpus=1, local_gb=1000),
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utils.new_bm_node(pm_address='5', service_host="host2",
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memory_mb=2000, cpus=2, local_gb=1000),
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]
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self.ids = []
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for n in nodes:
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ref = db.bm_node_create(self.context, n)
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self.ids.append(ref['id'])
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def test_get_all0(self):
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r = db.bm_node_get_all(self.context)
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self.assertEquals(r, [])
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def test_get_all(self):
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r = db.bm_node_get_all(self.context)
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self.assertEquals(r, [])
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self._create_nodes()
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r = db.bm_node_get_all(self.context)
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self.assertEquals(len(r), 6)
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def test_get(self):
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self._create_nodes()
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r = db.bm_node_get(self.context, self.ids[0])
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self.assertEquals(r['pm_address'], '0')
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r = db.bm_node_get(self.context, self.ids[1])
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self.assertEquals(r['pm_address'], '1')
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r = db.bm_node_get(self.context, -1)
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self.assertTrue(r is None)
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def test_get_by_service_host(self):
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self._create_nodes()
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r = db.bm_node_get_all(self.context, service_host=None)
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self.assertEquals(len(r), 6)
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r = db.bm_node_get_all(self.context, service_host="host1")
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self.assertEquals(len(r), 1)
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self.assertEquals(r[0]['pm_address'], '0')
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r = db.bm_node_get_all(self.context, service_host="host2")
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self.assertEquals(len(r), 5)
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pmaddrs = [x['pm_address'] for x in r]
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self.assertIn('1', pmaddrs)
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self.assertIn('2', pmaddrs)
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self.assertIn('3', pmaddrs)
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self.assertIn('4', pmaddrs)
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self.assertIn('5', pmaddrs)
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r = db.bm_node_get_all(self.context, service_host="host3")
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self.assertEquals(r, [])
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def test_destroy(self):
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self._create_nodes()
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db.bm_node_destroy(self.context, self.ids[0])
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r = db.bm_node_get(self.context, self.ids[0])
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self.assertTrue(r is None)
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r = db.bm_node_get_all(self.context)
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self.assertEquals(len(r), 5)
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def test_find_free(self):
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self._create_nodes()
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fn = db.bm_node_find_free(self.context, 'host2')
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self.assertEqual(fn['pm_address'], '2')
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fn = db.bm_node_find_free(self.context, 'host2',
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memory_mb=500, cpus=2, local_gb=100)
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self.assertEqual(fn['pm_address'], '3')
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fn = db.bm_node_find_free(self.context, 'host2',
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memory_mb=1001, cpus=1, local_gb=1000)
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self.assertEqual(fn['pm_address'], '4')
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fn = db.bm_node_find_free(self.context, 'host2',
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memory_mb=2000, cpus=1, local_gb=1000)
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self.assertEqual(fn['pm_address'], '4')
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fn = db.bm_node_find_free(self.context, 'host2',
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memory_mb=2000, cpus=2, local_gb=1000)
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self.assertEqual(fn['pm_address'], '5')
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# check memory_mb
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fn = db.bm_node_find_free(self.context, 'host2',
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memory_mb=2001, cpus=2, local_gb=1000)
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self.assertTrue(fn is None)
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# check cpus
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fn = db.bm_node_find_free(self.context, 'host2',
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memory_mb=2000, cpus=3, local_gb=1000)
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self.assertTrue(fn is None)
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# check local_gb
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fn = db.bm_node_find_free(self.context, 'host2',
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memory_mb=2000, cpus=2, local_gb=1001)
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self.assertTrue(fn is None)
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