5
我正尝试使用AWS上的集群计算进行一些实验。我在这方面是全新的，并且有一些问题。我试图按照这里找到的教程：http://star.mit.edu/cluster/docs/latest/plugins/ipython.html#using-the-ipython-cluster。我使用星群启动具有以下内容的群集实例：在AWS上使用starcluster和ipython进行集群计算
starcluster start mycluster
一切都如预期的那样出现，它显示ipython插件已加载。然后我尝试执行以下命令，如图教程：但是
starcluster sshmaster mycluster -u myuser
连接失败，并告诉我
Permission denied (publickey).
我能够登录使用
starcluster sshmaster mycluster
所以我试图继续教程登录到主，但当我尝试创建客户端我收到并出现错误：
AssertionError: Not a valid connection file or url:
u'/root/.ipython/profile_default/security/ipcontroller-client.json'
，我看到的唯一的看上去与众不同的是，当群集已启动此出现：
>>> Running plugin ipcluster
>>> Writing IPython cluster config files
>>> Starting IPython cluster with 7 engines
>>> Waiting for JSON connector file...
>>> Creating IPCluster cache directory: /Users/username/.starcluster/ipcluster
>>> Saving JSON connector file to '/Users/username/.starcluster/ipcluster/mycluster-us-east-1.json'
!!! ERROR - Error occurred while running plugin 'ipcluster':
Traceback (most recent call last):
File "/Library/Python/2.7/site-packages/StarCluster-0.93.3-py2.7.egg/starcluster/cluster.py", line 1506, in run_plugin
func(*args)
File "/Library/Python/2.7/site-packages/StarCluster-0.93.3-py2.7.egg/starcluster/plugins/ipcluster.py", line 276, in run
plug.run(nodes, master, user, user_shell, volumes)
File "<string>", line 2, in run
File "/Library/Python/2.7/site-packages/StarCluster-0.93.3-py2.7.egg/starcluster/utils.py", line 87, in wrap_f
res = func(*arg, **kargs)
File "/Library/Python/2.7/site-packages/StarCluster-0.93.3-py2.7.egg/starcluster/plugins/ipcluster.py", line 228, in run
cfile = self._start_cluster(master, n, profile_dir)
File "/Library/Python/2.7/site-packages/StarCluster-0.93.3-py2.7.egg/starcluster/plugins/ipcluster.py", line 173, in _start_cluster
master.ssh.get(json, local_json)
File "/Library/Python/2.7/site-packages/StarCluster-0.93.3-py2.7.egg/starcluster/sshutils/__init__.py", line 431, in get
self.scp.get(remotepaths, localpath, recursive=recursive)
File "/Library/Python/2.7/site-packages/StarCluster-0.93.3-py2.7.egg/starcluster/sshutils/scp.py", line 141, in get
self._recv_all()
File "/Library/Python/2.7/site-packages/StarCluster-0.93.3-py2.7.egg/starcluster/sshutils/scp.py", line 242, in _recv_all
msg = self.channel.recv(1024)
File "build/bdist.macosx-10.8-intel/egg/ssh/channel.py", line 611, in recv
raise socket.timeout()
timeout
有什么想法？