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Bug #14500

closed

"Error reading SSH protocol banner" in rados-infernalis-distro-basic-openstack

Added by Yuri Weinstein over 8 years ago. Updated over 4 years ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Category:
-
% Done:

0%

Source:
Q/A
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
rados
Crash signature (v1):
Crash signature (v2):

Description

I see these errors in many runs, but jobs seem to be recovering after it and running fine, so maybe benign

Run: http://pulpito.ovh.sepia.ceph.com:8081/teuthology-2016-01-23_02:00:01-rados-infernalis-distro-basic-openstack/
Jobs: all
Logs: http://teuthology.ovh.sepia.ceph.com/teuthology/teuthology-2016-01-23_02:00:01-rados-infernalis-distro-basic-openstack/8006/teuthology.log

2016-01-23T02:57:22.835 INFO:teuthology.misc:Re-opening connections...
2016-01-23T02:57:22.835 INFO:teuthology.misc:trying to connect to ubuntu@target085224.ovh.sepia.ceph.com
2016-01-23T02:57:22.837 DEBUG:teuthology.orchestra.connection:{'username': 'ubuntu', 'hostname': 'target085224.ovh.sepia.ceph.com', 'key_filename': '/home/teuthworker/.ssh/id_rsa', 'timeout': 60}
2016-01-23T02:57:23.402 ERROR:paramiko.transport:Exception: Error reading SSH protocol banner[Errno 104] Connection reset by peer
2016-01-23T02:57:23.403 ERROR:paramiko.transport:Traceback (most recent call last):
2016-01-23T02:57:23.404 ERROR:paramiko.transport:  File "/home/teuthworker/src/teuthology_master/virtualenv/local/lib/python2.7/site-packages/paramiko/transport.py", line 1516, in run
2016-01-23T02:57:23.404 ERROR:paramiko.transport:    self._check_banner()
2016-01-23T02:57:23.404 ERROR:paramiko.transport:  File "/home/teuthworker/src/teuthology_master/virtualenv/local/lib/python2.7/site-packages/paramiko/transport.py", line 1633, in _check_banner
2016-01-23T02:57:23.404 ERROR:paramiko.transport:    raise SSHException('Error reading SSH protocol banner' + str(x))
2016-01-23T02:57:23.405 ERROR:paramiko.transport:SSHException: Error reading SSH protocol banner[Errno 104] Connection reset by peer
2016-01-23T02:57:23.405 ERROR:paramiko.transport:
2016-01-23T02:57:23.426 DEBUG:teuthology.orchestra.remote:Error reading SSH protocol banner[Errno 104] Connection reset by peer
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 #1

Updated by Yuri Weinstein over 8 years ago

  • Description updated (diff)
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 #4

Updated by Yuri Weinstein about 8 years ago

  • Release set to jewel
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 #5

Updated by Zack Cerza almost 8 years ago

  • Status changed from New to Closed

Either it's network noise, or something that might have been fixed by the paramiko upgrade. Let's reopen if we continue to see this.

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 #6

Updated by Brad Hubbard over 4 years ago

A note to anyone seeing this currently. "Error reading SSH protocol banner" is kind of a catch-all error for paramiko so the causes can be various. In my case the actual, underlying error was the following.

Traceback (most recent call last):
  File "test_connect.py", line 23, in <module>
    ssh.connect(**connect_args)
  File "/home/bhubbard/src/teuthology/virtualenv/local/lib/python2.7/site-packages/paramiko/client.py",
line 414, in connect
    raise BadHostKeyException(hostname, server_key, our_key)
paramiko.ssh_exception.BadHostKeyException:
('miraX.XXX.XXX.ceph.com', <paramiko.ecdsakey.ECDSAKey object at
0x7fb534521890>, <paramiko.ecdsakey.ECDSAKey object at
0x7fb534ec8a10>)

This was due to conflicting entries for the machines in my known_hosts file and once they were removed the operation succeeded. After my analysis of the issue the Sepia wiki [1] was updated to recommend use of the "UserKnownHostsFile /dev/null" directive in ssh/config.

[1] https://wiki.sepia.ceph.com/doku.php?id=testnodeaccess#sshexceptionerror_reading_ssh_protocol_banner

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