From: Ian Barton <lists@wilkesley.net>
To: help-gnu-emacs@gnu.org
Subject: Re: Tramp ssh Authentication Problem.
Date: Sun, 08 Jun 2014 12:45:02 +0100 [thread overview]
Message-ID: <53944CBE.5030107@wilkesley.net> (raw)
In-Reply-To: <53941A38.7040306@wilkesley.net>
On 08/06/14 09:09, Ian Barton wrote:
> I am having some problems with Tramp logging in to remote servers. In
> my ~/.ssh/config I have:
>
> Host blacky.wilkesley.net
> IdentityFile ~/.ssh/id_rsa_blacky_linode
> Host wilkesley.org
> IdentityFile ~/.ssh/id_rsa_linode_ian
>
> I can login to either host using ssh wilkesley.org or ssh
> blacky.wilkesley.org. However, tramp logs in OK to wilkesley.org, but
> *not* to blacky.wilkesley.net.
>
> If I use the following minimal init file:
>
> (setq tramp-shell-prompt-pattern "^[^$>\n]*[#$%>]*\\(\[[0-9;]*[a-zA-Z]
> *\\)*")
> (eval-after-load 'tramp '(setenv "SHELL" "/bin/bash"))
> (setq tramp-default-method "ssh")
> (setq tramp-verbose 10)
>
> I get the following in the Tramp log when I try to login to
> blacky.wilkesley.net:
>
> 08:52:15.819432 tramp-process-one-action (5) # Looking for regexp
> "\(^.*\([pP]assword\|[pP]assphrase\).*:? *\)\'" from remote shell
> 08:52:15.819650 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.819878 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.820211 tramp-process-one-action (5) # Looking for regexp
> "\(^.*\(Connection \(?:\(?:clo\|refu\)sed\)\|Host key verification
> failed\.\|Login \(?:[Ii]ncorrect\)\|N\(?:ame or service not known\|o
> supported authentication methods left to try!\)\|Permission
> denied\|\(?:Sorry, try again\|Timeout, server not
> responding\)\.\).*\|^.*\(Received signal [0-9]+\).*\)\'" from remote shell
> 08:52:15.820469 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.820697 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.820936 tramp-process-one-action (5) # Looking for regexp
> "\(^[^#$%>
> ]*[#$%>] *\)\'" from remote shell
> 08:52:15.821198 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.821426 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.821635 tramp-process-one-action (5) # Looking for regexp "\(^[^$>
> ]*[#$%>]*\([[0-9;]*[a-zA-Z] *\)*\)\'" from remote shell
> 08:52:15.821866 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.822092 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.822339 tramp-process-one-action (5) # Looking for regexp
> "\(\(Are you sure you want to continue connecting (yes/no)\?\)\s-*\)\'"
> from remote shell
> 08:52:15.822574 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.822799 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.823010 tramp-process-one-action (5) # Looking for regexp
> "\(\(\(?:Store key in cache\? (y/\|Update cached key\? (y/n, Return
> cancels connectio\)n)\)\s-*\)\'" from remote shell
> 08:52:15.823245 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.823502 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.823690 tramp-process-one-action (5) # Looking for regexp
> "\(\(TERM = (.*)\|Terminal type\? \[.*\]\)\s-*\)\'" from remote shell
> 08:52:15.823906 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.824101 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.824277 tramp-process-one-action (5) # Looking for regexp
> "\(\)\'" from remote shell
> 08:52:15.824489 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.838558 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:15.838773 tramp-process-one-action (5) # Call
> `tramp-action-process-alive'
> 08:52:15.838968 tramp-accept-process-output (10) # *tramp/ssh
> blacky.wilkesley.net* run
> 08:52:16.757812 tramp-accept-process-output (10) #
> #$ Last login: Sun Jun 8 08:51:51 2014 from 46.33.134.31
> 08:52:16.758055 tramp-process-one-action (5) # Looking for regexp
> "\(.*ogin\( .*\)?: *\)\'" from remote shell
> 08:52:16.758317 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:16.758556 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:16.758985 tramp-process-one-action (5) # Looking for regexp
> "\(^.*\([pP]assword\|[pP]assphrase\).*:? *\)\'" from remote shell
> 08:52:16.759223 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:16.759454 tramp-get-connection-property (7) # check-remote-echo nil
> 08:52:16.759688 tramp-process-one-action (5) # Looking for regexp
> "\(^.*\(Connection \(?:\(?:clo\|refu\)sed\)\|Host key verification
> failed\.\|Login \(?:[Ii]ncorrect\)\|N\(?:ame or service not known\|o
> supported authentication methods left to try!\)\|Permission
> denied\|\(?:Sorry, try again\|Timeout, server not
> responding\)\.\).*\|^.*\(Received signal [0-9]+\).*\)\'" from remote shell
>
> For some reason it looks as thought the host key verification is
> failing, but I can't see why.
>
> Ian.
>
A bit more information. Here is the log from the serer when tramp fails
to login:
Jun 08 12:41:28 blacky.wilkesley.net sshd[19722]: Set
/proc/self/oom_score_adj to 0
Jun 08 12:41:28 blacky.wilkesley.net sshd[19722]: Connection from
46.33.134.31 port 51580 on 178.79.179.180 port 22
Jun 08 12:41:29 blacky.wilkesley.net sshd[19722]: reverse mapping
checking getaddrinfo for dsl-fixed-46-33-134-31.interdsl.co.uk
[46.33.134.31] failed - POSSIBLE BREAK-IN ATTEMPT!
Jun 08 12:41:29 blacky.wilkesley.net sshd[19722]: Postponed publickey
for ian from 46.33.134.31 port 51580 ssh2 [preauth]
Jun 08 12:41:29 blacky.wilkesley.net sshd[19722]: Accepted publickey for
ian from 46.33.134.31 port 51580 ssh2: RSA
d2:4d:8c:36:40:84:7e:b1:d5:3a:39:37:fe:2f:31:1e
Jun 08 12:41:29 blacky.wilkesley.net sshd[19722]:
pam_unix(sshd:session): session opened for user ian by (uid=0)
It appears that the public key is accepted OK, but Tramp just hangs. The
sshd config file is identical on the server that works and the one that
doesn't.
Ian.
next prev parent reply other threads:[~2014-06-08 11:45 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-08 8:09 Tramp ssh Authentication Problem Ian Barton
2014-06-08 11:45 ` Ian Barton [this message]
2014-06-08 15:15 ` Michael Albinus
2014-06-09 7:51 ` Ian Barton
2014-06-09 9:06 ` Michael Albinus
2014-06-10 2:22 ` zwz
2014-06-10 9:42 ` Michael Albinus
2014-06-10 10:06 ` zwz
2014-06-10 10:34 ` Michael Albinus
2014-06-11 5:04 ` zwz
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