A server I can ssh into fine has begun refusing to scp.
$ scp ~/tmp/foo email@example.com:~/tmp/ lost connection
scp -v -v I can see the connection succeeds and the transfer appears to succeed, but no file appears on the other side.
OpenSSH_5.9p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /Users/schwern/.ssh/config debug1: /Users/schwern/.ssh/config line 1: Applying options for * debug1: Reading configuration data /etc/ssh_config debug1: /etc/ssh_config line 20: Applying options for * debug2: ssh_connect: needpriv 0 debug1: Connecting to testcurrent01.dev.liquidweb.com [10.30.152.254] port 22. debug1: Connection established. debug1: identity file /Users/schwern/.ssh/id_rsa type -1 debug1: identity file /Users/schwern/.ssh/id_rsa-cert type -1 debug1: identity file /Users/schwern/.ssh/id_dsa type -1 debug1: identity file /Users/schwern/.ssh/id_dsa-cert type -1 debug1: Remote protocol version 2.0, remote software version OpenSSH_4.3 debug1: match: OpenSSH_4.3 pat OpenSSH_4* debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_5.9 debug2: fd 3 setting O_NONBLOCK debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received ...lots of authentication details... debug1: Enabling compression at level 6. debug1: Authentication succeeded (publickey). Authenticated to firstname.lastname@example.org ([220.127.116.11]:22). debug2: fd 5 setting O_NONBLOCK debug2: fd 6 setting O_NONBLOCK debug1: channel 0: new [client-session] debug2: channel 0: send open debug1: Entering interactive session. debug2: callback start debug2: client_session2_setup: id 0 debug2: fd 3 setting TCP_NODELAY debug1: Sending environment. debug1: Sending env LANG = en_US.UTF-8 debug2: channel 0: request env confirm 0 debug1: Sending command: scp -v -t -- ~/tmp/ debug2: channel 0: request exec confirm 1 debug2: callback done debug2: channel 0: open confirm rwindow 0 rmax 32768 debug2: channel 0: rcvd adjust 2097152 debug2: channel_input_status_confirm: type 99 id 0 debug2: exec request accepted on channel 0 debug2: channel 0: rcvd eof debug2: channel 0: output open -> drain debug2: channel 0: obuf empty debug2: channel 0: close_write debug2: channel 0: output drain -> closed debug1: client_input_channel_req: channel 0 rtype exit-status reply 0 debug2: channel 0: rcvd close debug2: channel 0: close_read debug2: channel 0: input open -> closed debug2: channel 0: almost dead debug2: channel 0: gc: notify user debug2: channel 0: gc: user detached debug2: channel 0: send close debug2: channel 0: is dead debug2: channel 0: garbage collecting debug1: channel 0: free: client-session, nchannels 1 debug1: fd 0 clearing O_NONBLOCK debug1: fd 1 clearing O_NONBLOCK Transferred: sent 4576, received 2520 bytes, in 0.0 seconds Bytes per second: sent 167737.0, received 92372.6 debug1: Exit status 0 debug1: compress outgoing: raw data 135, compressed 121, factor 0.90 debug1: compress incoming: raw data 66, compressed 52, factor 0.79 lost connection
It is a CentOS 5.9 machine.
Things I've checked...
- I have permission to write to that directory.
- The user has a sensible shell (/bin/bash).
- I tried moving my
~/.ssh/configout of the way.
- scp'ing to that machine from others with entirely different operating systems also fail.
- The disk is not full.
- Restarting sshd.
Apr 4 14:23:22 some sshd: Postponed publickey for user from 18.104.22.168 port 33581 ssh2 Apr 4 14:23:22 some sshd: Accepted publickey for user from 22.214.171.124 port 33581 ssh2 Apr 4 14:23:22 some sshd: pam_unix(sshd:session): session opened for user user by (uid=0) Apr 4 14:23:22 some sshd: pam_unix(sshd:session): session closed for user user
What might I check next?