我想使用OpenStack Sahara创建一个Hadoop集群。我有一个控制器节点和一个计算节点，它们位于不同的物理机器上，并具有以下IP：
控制器：172.18.xxx.x1和计算：172.18.xxx.x2
首先，我创建一个具有浮动IP的网络：
neutron net-create ext-net --router:external=True
neutron subnet-create ext-net --allocation-pool start=192.168.0.2,end=192.168.0.254 --enable_dhcp=False 192.168.0.0/24
neutron floatingip-create ext-net
然后我创建节点组模板和集群模板：
openstack dataprocessing node group template create --name vanilla-default-master-floating --plugin vanilla --version 2.7.1 --processes namenode resourcemanager --flavor 2 --auto-security-group --floating-ip-pool c7c879b9-5695-43cc-88b0-9dce957497dc
openstack dataprocessing node group template create --name vanilla-default-worker-floating --plugin vanilla --version 2.7.1 --processes datanode nodemanager --flavor 2 --auto-security-group --floating-ip-pool c7c879b9-5695-43cc-88b0-9dce957497dc
openstack dataprocessing cluster template create --name vanilla-default-cluster-floating --node-groups vanilla-default-master-floating:1 vanilla-default-worker-floating:3
最后，我尝试启动群集：
openstack dataprocessing cluster create --name my-cluster-1 --cluster-template vanilla-default-cluster-floating --user-keypair key --neutron-network ext-net --image sahara-mitaka-vanilla-hadoop
来自sahara-engine.log
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [req-9cd4a763-48aa-4123-96ae-5ae9aa626d85 136b5723b10d4e89afabb86adca1ed89 598f0ed79f6d461589df0124123eaf16 - - -] [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] Error during operating on cluster (reason: Heat stack failed with status Resource CREATE failed: ResourceInError: resources.vanilla-default-master-floating.resources[0].resources.inst: Went to status ERROR due to "Message: No valid host was found. There are not enough hosts available., Code: 500"
Error ID: 9e87d53c-e2bd-4e34-b5a7-89048c7a1ba0)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] Traceback (most recent call last):
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/sahara/service/ops.py", line 192, in wrapper
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] f(cluster_id, *args, **kwds)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/sahara/service/ops.py", line 285, in _provision_cluster
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] INFRA.create_cluster(cluster)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/sahara/service/heat/heat_engine.py", line 63, in create_cluster
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] self._launch_instances(cluster, target_count, CREATE_STAGES)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/sahara/service/heat/heat_engine.py", line 224, in _launch_instances
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] cluster, target_count, update_stack, disable_rollback)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/sahara/utils/cluster_progress_ops.py", line 139, in handler
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] add_fail_event(instance, e)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] self.force_reraise()
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] six.reraise(self.type_, self.value, self.tb)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/sahara/utils/cluster_progress_ops.py", line 136, in handler
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] value = func(*args, **kwargs)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/sahara/service/heat/heat_engine.py", line 215, in _create_instances
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] last_updated_time=stack.last_updated_time)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] File "/usr/lib/python2.7/site-packages/sahara/utils/openstack/heat.py", line 112, in wait_stack_completion
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] raise ex.HeatStackException(stack.stack_status_reason)
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] HeatStackException: Heat stack failed with status Resource CREATE failed: ResourceInError: resources.vanilla-default-master-floating.resources[0].resources.inst: Went to status ERROR due to "Message: No valid host was found. There are not enough hosts available., Code: 500"
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] Error ID: 9e87d53c-e2bd-4e34-b5a7-89048c7a1ba0
2016-06-23 16:34:49.224 15603 ERROR sahara.service.ops [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf]
2016-06-23 16:35:06.997 15603 WARNING sahara.service.heat.heat_engine [req-9cd4a763-48aa-4123-96ae-5ae9aa626d85 136b5723b10d4e89afabb86adca1ed89 598f0ed79f6d461589df0124123eaf16 - - -] [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] Cluster creation rollback (reason: Heat stack failed with status Resource CREATE failed: ResourceInError: resources.vanilla-default-master-floating.resources[0].resources.inst: Went to status ERROR due to "Message: No valid host was found. There are not enough hosts available., Code: 500"
Error ID: 9e87d53c-e2bd-4e34-b5a7-89048c7a1ba0)
2016-06-23 16:35:07.420 15603 INFO sahara.utils.cluster [req-9cd4a763-48aa-4123-96ae-5ae9aa626d85 136b5723b10d4e89afabb86adca1ed89 598f0ed79f6d461589df0124123eaf16 - - -] [instance: none, cluster: 9ec5f346-1321-4b75-a96a-e3f84bd28acf] Cluster status has been changed. New status=Error
所以我的猜测是我的虚拟网络和子网的创建是错误的，或者我在那里遗漏了一些东西。
如果这有帮助，那就是openstack-status的输出：
== Glance services ==
openstack-glance-api: active
openstack-glance-registry: active
== Keystone service ==
openstack-keystone: active
== Horizon service ==
openstack-dashboard: 404
== neutron services ==
neutron-server: active (disabled on boot)
== Cinder services ==
openstack-cinder-api: active
openstack-cinder-scheduler: active
openstack-cinder-volume: inactive (disabled on boot)
== Sahara services ==
openstack-sahara-api: active
openstack-sahara-engine: active
== Support services ==
mariadb: inactive (disabled on boot)
openvswitch: active
dbus: active
rabbitmq-server: active
memcached: active
== Keystone users ==
/usr/lib/python2.7/site-packages/keystoneclient/shell.py:64: DeprecationWarning: The keystone CLI is deprecated in favor of python-openstackclient. For a Python library, continue using python-keystoneclient.
'python-keystoneclient.', DeprecationWarning)
WARNING: unsupported identity-api-version 3, falling back to 2.0
/usr/lib/python2.7/site-packages/keystoneclient/v2_0/client.py:145: DeprecationWarning: Constructing an instance of the keystoneclient.v2_0.client.Client class without a session is deprecated as of the 1.7.0 release and may be removed in the 2.0.0 release.
'the 2.0.0 release.', DeprecationWarning)
/usr/lib/python2.7/site-packages/keystoneclient/v2_0/client.py:147: DeprecationWarning: Using the 'tenant_name' argument is deprecated in version '1.7.0' and will be removed in version '2.0.0', please use the 'project_name' argument instead
super(Client, self).__init__(**kwargs)
/usr/lib/python2.7/site-packages/debtcollector/renames.py:45: DeprecationWarning: Using the 'tenant_id' argument is deprecated in version '1.7.0' and will be removed in version '2.0.0', please use the 'project_id' argument instead
return f(*args, **kwargs)
/usr/lib/python2.7/site-packages/keystoneclient/httpclient.py:371: DeprecationWarning: Constructing an HTTPClient instance without using a session is deprecated as of the 1.7.0 release and may be removed in the 2.0.0 release.
'the 2.0.0 release.', DeprecationWarning)
/usr/lib/python2.7/site-packages/keystoneclient/session.py:140: DeprecationWarning: keystoneclient.session.Session is deprecated as of the 2.1.0 release in favor of keystoneauth1.session.Session. It will be removed in future releases.
DeprecationWarning)
/usr/lib/python2.7/site-packages/keystoneclient/auth/identity/base.py:56: DeprecationWarning: keystoneclient auth plugins are deprecated as of the 2.1.0 release in favor of keystoneauth1 plugins. They will be removed in future releases.
'in future releases.', DeprecationWarning)
Authorization Failed: The resource could not be found. (HTTP 404) (Request-ID: req-2b286118-c025-4359-a7a4-d5a25f505070)
== Glance images ==
+--------------------------------------+------------------------------+
| ID | Name |
+--------------------------------------+------------------------------+
| c202991b-78b3-4fcd-bffa-9590c3208e69 | cirros |
| d02adcdb-b202-4147-a88a-cea51ce438b1 | sahara-mitaka-vanilla-hadoop |
+--------------------------------------+------------------------------+
来自openstack user list的输出：
+----------------------------------+-------------------+
| ID | Name |
+----------------------------------+-------------------+
| 0bf4d4c8089c4991abd777dc57729d13 | glance |
| 136b5723b10d4e89afabb86adca1ed89 | admin |
| 674fbea90b7b411d82e1785dcbf9052b | sahara |
| 82d455369bb14007a5c12eea7c38654d | cinder |
| 920243b74273437a93632012cdc1c45e | neutron |
| d0823e2eb5844d80822b8684437f2459 | heat_domain_admin |
| e93399b678074c9abe6b42f6b9fec6f5 | heat |
| f338a775ab5c43f09adac18e807f257b | nova |
| f75772b9af5c42338cbff05c13202c22 | demo |
+----------------------------------+-------------------+
答案 0 :(得分：0)
“没有找到有效的主机”意味着您没有足够的资源。
例如，Sahara将尝试在仅具有3GO的计算节点中创建具有4GO RAM的实例。