openstack 用nova API 指定 compute node 创建 instance

我很黑！

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博客地址：http://blog.csdn.net/qq_21398167
　　原博文地址：http://blog.csdn.net/qq_21398167/article/details/46924597

　　我们在博客中能够知道  能用命令行定向创建虚拟机到指定计算节点
　　http://blog.csdn.net/qq_21398167/article/details/46710175
　　

　　nova boot --image fedora  --flavor 1  test1  --availability-zone nova:node-1

　　为此我想看看是否能通过API  创建这种instance
　　通过查看 官网中的开源API   能够看到
　　http://blog.csdn.net/qq_21398167/article/details/46530305
　　中有这样一个API：

create(name,image,flavor,meta=None,files=None, reservation_id=None,min_count=None,max_count=None,security_groups=None,userdata=None, key_name=None, availability_zone=None, block_device_mapping=None,block_device_mapping_v2=None,nics=None,scheduler_hints=None,config_drive=None,disk_config=None,**kwargs)　　Create (boot) a new server.
Parameters:

• name – Something to name the server.
  
• image – The Image to boot with.
  
• flavor – The Flavor to boot onto.
  
• meta – A dict of arbitrary key/value metadata to store for thisserver. Both keys and values must be <=255 characters.
  
• files – A dict of files to overrwrite on the server upon boot.Keys are file names (i.e./etc/passwd) and valuesare the file contents (either as a string or as afile-like object).A maximum of five entries is allowed,and each file must be 10k or less.
  
• reservation_id – a UUID for the set of servers being requested.
  
• min_count – (optional extension) The minimum number ofservers to launch.
  
• max_count – (optional extension) The maximum number ofservers to launch.
  
• security_groups – A list of security group names
  
• userdata – user data to pass to be exposed by the metadataserver this can be a file type object as well or astring.
  
• key_name – (optional extension) name of previously createdkeypair to inject into the instance.
  
• availability_zone – Name of the availability zone for instanceplacement.
  
• block_device_mapping – (optional extension) A dict of blockdevice mappings for this server.
  
• block_device_mapping_v2 – (optional extension) A dict of blockdevice mappings for this server.
  
• nics – (optional extension) an ordered list of nics to beadded to this server, with information aboutconnected networks, fixed IPs, port etc.
  
• scheduler_hints – (optional extension) arbitrary key-value pairsspecified by the client to help boot an instance
  
• config_drive – (optional extension) value for config driveeither boolean, or volume-id
  
• disk_config – (optional extension) control how the disk ispartitioned when the server is created. possiblevalues are ‘AUTO’ or ‘MANUAL’.
  

这个API 中有同样參数   --availability-zone　　

　　所以直接在使用这个API 的时候将默认參数 None  替换成你想定向的那个计算节点名就Ok了！