[StarCluster] "connection closed" when running "starcluster ssmaster"

[Signell, Richard]

I set up a machine this morning and
starcluster sshmaster rps_cluster
was working fine to ssh in.

But now I'm getting "Connection closed by 54.204.55.67"

It seem that the cluster is running:

rsignell at gam:~$ starcluster listclusters
StarCluster - (http://star.mit.edu/cluster) (v. 0.94.3)
Software Tools for Academics and Researchers (STAR)
Please submit bug reports to starcluster at mit.edu

---------------------------------------------
rps_cluster (security group: @sc-rps_cluster)
---------------------------------------------
Launch time: 2014-01-16 08:18:09
Uptime: 0 days, 08:34:07
Zone: us-east-1a
Keypair: mykey2
EBS volumes: N/A
Cluster nodes:
     master running i-7950f657 ec2-54-204-55-67.compute-1.amazonaws.com
    node001 running i-7a50f654 ec2-54-196-2-68.compute-1.amazonaws.com
Total nodes: 2

And I don't see anything obvious in the verbose debug output:

rsignell at gam:~$ starcluster -d sshmaster rps_cluster
StarCluster - (http://star.mit.edu/cluster) (v. 0.94.3)
Software Tools for Academics and Researchers (STAR)
Please submit bug reports to starcluster at mit.edu

2014-01-16 16:53:13,515 config.py:567 - DEBUG - Loading config
2014-01-16 16:53:13,515 config.py:138 - DEBUG - Loading file:
/home/rsignell/.starcluster/config
2014-01-16 16:53:13,517 config.py:322 - DEBUG - include setting not
specified. Defaulting to []
2014-01-16 16:53:13,518 config.py:322 - DEBUG - web_browser setting
not specified. Defaulting to None
2014-01-16 16:53:13,518 config.py:322 - DEBUG - refresh_interval
setting not specified. Defaulting to 30
2014-01-16 16:53:13,518 config.py:322 - DEBUG - include setting not
specified. Defaulting to []
2014-01-16 16:53:13,518 config.py:322 - DEBUG - web_browser setting
not specified. Defaulting to None
2014-01-16 16:53:13,519 config.py:322 - DEBUG - refresh_interval
setting not specified. Defaulting to 30
2014-01-16 16:53:13,519 config.py:322 - DEBUG - aws_proxy_pass setting
not specified. Defaulting to None
2014-01-16 16:53:13,519 config.py:322 - DEBUG - aws_validate_certs
setting not specified. Defaulting to True
2014-01-16 16:53:13,520 config.py:322 - DEBUG - aws_ec2_path setting
not specified. Defaulting to /
2014-01-16 16:53:13,520 config.py:322 - DEBUG - aws_region_name
setting not specified. Defaulting to None
2014-01-16 16:53:13,521 config.py:322 - DEBUG - aws_region_host
setting not specified. Defaulting to None
2014-01-16 16:53:13,521 config.py:322 - DEBUG - aws_s3_path setting
not specified. Defaulting to /
2014-01-16 16:53:13,521 config.py:322 - DEBUG - aws_proxy_user setting
not specified. Defaulting to None
2014-01-16 16:53:13,521 config.py:322 - DEBUG - aws_is_secure setting
not specified. Defaulting to True
2014-01-16 16:53:13,522 config.py:322 - DEBUG - aws_s3_host setting
not specified. Defaulting to None
2014-01-16 16:53:13,522 config.py:322 - DEBUG - aws_port setting not
specified. Defaulting to None
2014-01-16 16:53:13,522 config.py:322 - DEBUG - ec2_private_key
setting not specified. Defaulting to None
2014-01-16 16:53:13,522 config.py:322 - DEBUG - ec2_cert setting not
specified. Defaulting to None
2014-01-16 16:53:13,523 config.py:322 - DEBUG - aws_proxy setting not
specified. Defaulting to None
2014-01-16 16:53:13,523 config.py:322 - DEBUG - aws_proxy_port setting
not specified. Defaulting to None
2014-01-16 16:53:13,523 config.py:322 - DEBUG - device setting not
specified. Defaulting to None
2014-01-16 16:53:13,523 config.py:322 - DEBUG - partition setting not
specified. Defaulting to None
2014-01-16 16:53:13,524 config.py:322 - DEBUG - device setting not
specified. Defaulting to None
2014-01-16 16:53:13,524 config.py:322 - DEBUG - partition setting not
specified. Defaulting to None
2014-01-16 16:53:13,525 config.py:322 - DEBUG - disable_queue setting
not specified. Defaulting to False
2014-01-16 16:53:13,525 config.py:322 - DEBUG - volumes setting not
specified. Defaulting to []
2014-01-16 16:53:13,525 config.py:322 - DEBUG - availability_zone
setting not specified. Defaulting to None
2014-01-16 16:53:13,526 config.py:322 - DEBUG - spot_bid setting not
specified. Defaulting to None
2014-01-16 16:53:13,526 config.py:322 - DEBUG - master_instance_type
setting not specified. Defaulting to None
2014-01-16 16:53:13,526 config.py:322 - DEBUG - disable_cloudinit
setting not specified. Defaulting to False
2014-01-16 16:53:13,526 config.py:322 - DEBUG - force_spot_master
setting not specified. Defaulting to False
2014-01-16 16:53:13,526 config.py:322 - DEBUG - extends setting not
specified. Defaulting to None
2014-01-16 16:53:13,526 config.py:322 - DEBUG - master_image_id
setting not specified. Defaulting to None
2014-01-16 16:53:13,527 config.py:322 - DEBUG - userdata_scripts
setting not specified. Defaulting to []
2014-01-16 16:53:13,527 config.py:322 - DEBUG - permissions setting
not specified. Defaulting to []
2014-01-16 16:53:13,529 awsutils.py:74 - DEBUG - creating self._conn
w/ connection_authenticator kwargs = {'proxy_user': None,
'proxy_pass': None, 'proxy_port': None, 'proxy': None, 'is_secure':
True, 'path': '/', 'region': None, 'validate_certs': True, 'port':
None}
2014-01-16 16:53:13,872 cluster.py:711 - DEBUG - existing nodes: {}
2014-01-16 16:53:13,872 cluster.py:719 - DEBUG - adding node
i-7a50f654 to self._nodes list
2014-01-16 16:53:13,873 cluster.py:719 - DEBUG - adding node
i-7950f657 to self._nodes list
2014-01-16 16:53:13,873 cluster.py:727 - DEBUG - returning self._nodes
= [<Node: master (i-7950f657)>, <Node: node001 (i-7a50f654)>]
2014-01-16 16:53:14,063 cluster.py:711 - DEBUG - existing nodes:
{u'i-7a50f654': <Node: node001 (i-7a50f654)>, u'i-7950f657': <Node:
master (i-7950f657)>}
2014-01-16 16:53:14,064 cluster.py:714 - DEBUG - updating existing
node i-7a50f654 in self._nodes
2014-01-16 16:53:14,064 cluster.py:714 - DEBUG - updating existing
node i-7950f657 in self._nodes
2014-01-16 16:53:14,064 cluster.py:727 - DEBUG - returning self._nodes
= [<Node: master (i-7950f657)>, <Node: node001 (i-7a50f654)>]
2014-01-16 16:53:14,168 node.py:1039 - DEBUG - Using native OpenSSH client
2014-01-16 16:53:14,169 node.py:1050 - DEBUG - ssh_cmd: ssh -i
/home/rsignell/.ssh/mykey2.rsa
root at ec2-54-204-55-67.compute-1.amazonaws.com
Connection closed by 54.204.55.67


I didn't see any "common problems" or "troubleshooting" sections in
the starcluster documentation, and I checked the FAQ and the mailing
list archives, but I probably overlooked something, as this certainly
seems like a newbie question (which I am).

Thanks,
Rich
-- 
Dr. Richard P. Signell   (508) 457-2229
USGS, 384 Woods Hole Rd.
Woods Hole, MA 02543-1598