Why does my ssh session terminate immediately?
Hi all,
Short Version:
I have the problem that my ssh session terminates immediately after
logging in.
Longer Version:
I am running debian squeeze on a client and on a 'server'. The server
is actually a pogoplug on which I installed debian squeeze following
http://projects.doozan.com/debian/.
I can not get an interactive shell when logging in to the server via
ssh.
This happens on the root account as well as a normal user account and
regardless whether I authenticate via password or via keys.
This is what I see:
,----
| > ssh root@192.168.2.109
| Linux debian 2.6.32-5-kirkwood #1 Sun May 6 16:57:51 UTC 2012 armv5tel
|
| The programs included with the Debian GNU/Linux system are free software;
| the exact distribution terms for each program are described in the
| individual files in /usr/share/doc/*/copyright.
|
| Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
| permitted by applicable law.
| Last login: Wed Apr 17 21:54:34 2013 from 192.168.2.101
| Connection to 192.168.2.109 closed.
`----
I can run commands via ssh, though.
(I can, for instance, run a crippled bash with 'ssh root@192.168.2.109 bash')
I do not see any reason for this problem. Below you find the contents
of some relevant files as well as the output of 'ssh -vvv'.
Any pointers to what could be the problem here are much appreciated!
Please let me know if I should provide more information.
Thanks in advance,
Andreas
Attachments:
- output of 'ssh -vvv'
- root's ~/.bashrc
- root's ~/.profile
- /etc/profile
- /etc/bash.bashrc
- *no* logfile, is I only have these files in /var/log:
- alternatives.log
- apt
- boot
- bootstrap.log
- btmp
- dmesg
- dmesg.0
- dmesg.1.gz
- dmesg.2.gz
- dmesg.3.gz
- dmesg.4.gz
- dpkg.log
- faillog
- fsck
- lastlog
- wtmp
,----[ ssh -vvv root@192.168.2.109 ]
| OpenSSH_6.0p1 Debian-4, OpenSSL 1.0.1e 11 Feb 2013
| debug1: Reading configuration data /home/andreas/.ssh/config
| debug1: Reading configuration data /etc/ssh/ssh_config
| debug1: /etc/ssh/ssh_config line 19: Applying options for *
| debug2: ssh_connect: needpriv 0
| debug1: Connecting to 192.168.2.109 [192.168.2.109] port 22.
| debug1: Connection established.
| debug3: Incorrect RSA1 identifier
| debug3: Could not load "/home/andreas/.ssh/id_rsa" as a RSA1 public key
| debug1: identity file /home/andreas/.ssh/id_rsa type 1
| debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
| debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048
| debug1: identity file /home/andreas/.ssh/id_rsa-cert type -1
| debug1: identity file /home/andreas/.ssh/id_dsa type -1
| debug1: identity file /home/andreas/.ssh/id_dsa-cert type -1
| debug1: identity file /home/andreas/.ssh/id_ecdsa type -1
| debug1: identity file /home/andreas/.ssh/id_ecdsa-cert type -1
| debug1: Remote protocol version 2.0, remote software version OpenSSH_5.5p1 Debian-6+squeeze3
| debug1: match: OpenSSH_5.5p1 Debian-6+squeeze3 pat OpenSSH_5*
| debug1: Enabling compatibility mode for protocol 2.0
| debug1: Local version string SSH-2.0-OpenSSH_6.0p1 Debian-4
| debug2: fd 3 setting O_NONBLOCK
| debug3: load_hostkeys: loading entries for host "192.168.2.109" from file "/home/andreas/.ssh/known_hosts"
| debug3: load_hostkeys: found key type RSA in file /home/andreas/.ssh/known_hosts:26
| debug3: load_hostkeys: loaded 1 keys
| debug3: order_hostkeyalgs: prefer hostkeyalgs: ssh-rsa-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-rsa
| debug1: SSH2_MSG_KEXINIT sent
| debug1: SSH2_MSG_KEXINIT received
| debug2: kex_parse_kexinit: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
| debug2: kex_parse_kexinit: ssh-rsa-cert-v01@openssh.com,ssh-rsa-cert-v00@openssh.com,ssh-rsa,ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-dss-cert-v01@openssh.com,ssh-dss-cert-v00@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-dss
| debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
| debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
| debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
| debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-sha2-256,hmac-sha2-256-96,hmac-sha2-512,hmac-sha2-512-96,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
| debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
| debug2: kex_parse_kexinit: none,zlib@openssh.com,zlib
| debug2: kex_parse_kexinit:
| debug2: kex_parse_kexinit:
| debug2: kex_parse_kexinit: first_kex_follows 0
| debug2: kex_parse_kexinit: reserved 0
| debug2: kex_parse_kexinit: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
| debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
| debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
| debug2: kex_parse_kexinit: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
| debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
| debug2: kex_parse_kexinit: hmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
| debug2: kex_parse_kexinit: none,zlib@openssh.com
| debug2: kex_parse_kexinit: none,zlib@openssh.com
| debug2: kex_parse_kexinit:
| debug2: kex_parse_kexinit:
| debug2: kex_parse_kexinit: first_kex_follows 0
| debug2: kex_parse_kexinit: reserved 0
| debug2: mac_setup: found hmac-md5
| debug1: kex: server->client aes128-ctr hmac-md5 none
| debug2: mac_setup: found hmac-md5
| debug1: kex: client->server aes128-ctr hmac-md5 none
| debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<1024<8192) sent
| debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
| debug2: dh_gen_key: priv key bits set: 120/256
| debug2: bits set: 523/1024
| debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
| debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
| debug1: Server host key: RSA 1b:08:38:7d:37:05:03:42:f2:59:a1:43:82:1d:84:b6
| debug3: load_hostkeys: loading entries for host "192.168.2.109" from file "/home/andreas/.ssh/known_hosts"
| debug3: load_hostkeys: found key type RSA in file /home/andreas/.ssh/known_hosts:26
| debug3: load_hostkeys: loaded 1 keys
| debug1: Host '192.168.2.109' is known and matches the RSA host key.
| debug1: Found key in /home/andreas/.ssh/known_hosts:26
| debug2: bits set: 522/1024
| debug1: ssh_rsa_verify: signature correct
| debug2: kex_derive_keys
| debug2: set_newkeys: mode 1
| debug1: SSH2_MSG_NEWKEYS sent
| debug1: expecting SSH2_MSG_NEWKEYS
| debug2: set_newkeys: mode 0
| debug1: SSH2_MSG_NEWKEYS received
| debug1: Roaming not allowed by server
| debug1: SSH2_MSG_SERVICE_REQUEST sent
| debug2: service_accept: ssh-userauth
| debug1: SSH2_MSG_SERVICE_ACCEPT received
| debug2: key: /home/andreas/.ssh/id_rsa (0x7f4d7356b2e0)
| debug2: key: /home/andreas/.ssh/id_dsa ((nil))
| debug2: key: /home/andreas/.ssh/id_ecdsa ((nil))
| debug1: Authentications that can continue: publickey,password
| debug3: start over, passed a different list publickey,password
| debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
| debug3: authmethod_lookup publickey
| debug3: remaining preferred: keyboard-interactive,password
| debug3: authmethod_is_enabled publickey
| debug1: Next authentication method: publickey
| debug1: Offering RSA public key: /home/andreas/.ssh/id_rsa
| debug3: send_pubkey_test
| debug2: we sent a publickey packet, wait for reply
| debug1: Server accepts key: pkalg ssh-rsa blen 279
| debug2: input_userauth_pk_ok: fp 47:7c:14:dd:25:54:14:0d:d8:cf:c5:24:44:d4:7b:c2
| debug3: sign_and_send_pubkey: RSA 47:7c:14:dd:25:54:14:0d:d8:cf:c5:24:44:d4:7b:c2
| debug1: Authentication succeeded (publickey).
| Authenticated to 192.168.2.109 ([192.168.2.109]:22).
| debug1: channel 0: new [client-session]
| debug3: ssh_session2_open: channel_new: 0
| debug2: channel 0: send open
| debug1: Requesting no-more-sessions@openssh.com
| debug1: Entering interactive session.
| debug2: callback start
| debug2: client_session2_setup: id 0
| debug2: fd 3 setting TCP_NODELAY
| debug3: packet_set_tos: set IP_TOS 0x10
| debug2: channel 0: request pty-req confirm 1
| debug1: Sending environment.
| debug3: Ignored env SSH_AGENT_PID
| debug3: Ignored env GPG_AGENT_INFO
| debug3: Ignored env TERM
| debug3: Ignored env SHELL
| debug3: Ignored env XDG_SESSION_COOKIE
| debug3: Ignored env USER
| debug3: Ignored env LS_COLORS
| debug3: Ignored env SSH_AUTH_SOCK
| debug3: Ignored env TMUX
| debug3: Ignored env PATH
| debug3: Ignored env PWD
| debug3: Ignored env ANDROID_SDK
| debug1: Sending env LANG = de_DE.UTF-8
| debug2: channel 0: request env confirm 0
| debug3: Ignored env TMUX_PANE
| debug3: Ignored env PS1
| debug3: Ignored env SHLVL
| debug3: Ignored env HOME
| debug3: Ignored env LOGNAME
| debug3: Ignored env DBUS_SESSION_BUS_ADDRESS
| debug3: Ignored env WINDOWPATH
| debug3: Ignored env DISPLAY
| debug3: Ignored env _
| debug2: channel 0: request shell confirm 1
| debug2: callback done
| debug2: channel 0: open confirm rwindow 0 rmax 32768
| debug2: channel_input_status_confirm: type 99 id 0
| debug2: PTY allocation request accepted on channel 0
| debug2: channel 0: rcvd adjust 2097152
| debug2: channel_input_status_confirm: type 99 id 0
| debug2: shell request accepted on channel 0
| Linux debian 2.6.32-5-kirkwood #1 Sun May 6 16:57:51 UTC 2012 armv5tel
|
| The programs included with the Debian GNU/Linux system are free software;
| the exact distribution terms for each program are described in the
| individual files in /usr/share/doc/*/copyright.
|
| Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
| permitted by applicable law.
| Last login: Wed Apr 17 21:55:06 2013 from 192.168.2.101
| debug1: client_input_channel_req: channel 0 rtype exit-signal reply 0
| debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0
| debug2: channel 0: rcvd eow
| debug2: channel 0: close_read
| debug2: channel 0: input open -> closed
| 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
| debug2: channel 0: rcvd close
| debug3: channel 0: will not send data after close
| 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
| debug3: channel 0: status: The following connections are open:
| #0 client-session (t4 r0 i3/0 o3/0 fd -1/-1 cc -1)
|
| Connection to 192.168.2.109 closed.
| Transferred: sent 3072, received 2760 bytes, in 0.0 seconds
| Bytes per second: sent 72154.8, received 64826.6
| debug1: Exit status -1
`----
,----[ ~/.bashrc ]
| # ~/.bashrc: executed by bash(1) for non-login shells.
|
| # Note: PS1 and umask are already set in /etc/profile. You should not
| # need this unless you want different defaults for root.
| # PS1='${debian_chroot:+($debian_chroot)}\h:\w\$ '
| # umask 022
|
| # You may uncomment the following lines if you want `ls' to be colorized:
| # export LS_OPTIONS='--color=auto'
| # eval "`dircolors`"
| # alias ls='ls $LS_OPTIONS'
| # alias ll='ls $LS_OPTIONS -l'
| # alias l='ls $LS_OPTIONS -lA'
| #
| # Some more alias to avoid making mistakes:
| # alias rm='rm -i'
| # alias cp='cp -i'
| # alias mv='mv -i'
`----
,----[ ~/.profile ]
| # ~/.profile: executed by Bourne-compatible login shells.
|
| if [ "$BASH" ]; then
| if [ -f ~/.bashrc ]; then
| . ~/.bashrc
| fi
| fi
`----
,----[ /etc/profile ]
| # /etc/profile: system-wide .profile file for the Bourne shell (sh(1))
| # and Bourne compatible shells (bash(1), ksh(1), ash(1), ...).
|
| if [ "`id -u`" -eq 0 ]; then
| PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
| else
| PATH="/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games"
| fi
| export PATH
|
| if [ "$PS1" ]; then
| if [ "$BASH" ]; then
| # The file bash.bashrc already sets the default PS1.
| # PS1='\h:\w\$ '
| if [ -f /etc/bash.bashrc ]; then
| . /etc/bash.bashrc
| fi
| else
| if [ "`id -u`" -eq 0 ]; then
| PS1='# '
| else
| PS1='$ '
| fi
| fi
| fi
|
| # The default umask is now handled by pam_umask.
| # See pam_umask(8) and /etc/login.defs.
|
| if [ -d /etc/profile.d ]; then
| for i in /etc/profile.d/*.sh; do
| if [ -r $i ]; then
| . $i
| fi
| done
| unset i
| fi
`----
,----[ /etc/bash.bashrc ]
| # System-wide .bashrc file for interactive bash(1) shells.
|
| # To enable the settings / commands in this file for login shells as well,
| # this file has to be sourced in /etc/profile.
|
| # If not running interactively, don't do anything
| [ -z "$PS1" ] && return
|
| # check the window size after each command and, if necessary,
| # update the values of LINES and COLUMNS.
| shopt -s checkwinsize
|
| # set variable identifying the chroot you work in (used in the prompt below)
| if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then
| debian_chroot=$(cat /etc/debian_chroot)
| fi
|
| # set a fancy prompt (non-color, overwrite the one in /etc/profile)
| PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
|
| # Commented out, don't overwrite xterm -T "title" -n "icontitle" by default.
| # If this is an xterm set the title to user@host:dir
| #case "$TERM" in
| #xterm*|rxvt*)
| # PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME}: ${PWD}\007"'
| # ;;
| #*)
| # ;;
| #esac
|
| # enable bash completion in interactive shells
| #if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
| # . /etc/bash_completion
| #fi
|
| # if the command-not-found package is installed, use it
| if [ -x /usr/lib/command-not-found -o -x /usr/share/command-not-found ]; then
| function command_not_found_handle {
| # check because c-n-f could've been removed in the meantime
| if [ -x /usr/lib/command-not-found ]; then
| /usr/bin/python /usr/lib/command-not-found -- $1
| return $?
| elif [ -x /usr/share/command-not-found ]; then
| /usr/bin/python /usr/share/command-not-found -- $1
| return $?
| else
| return 127
| fi
| }
| fi
`----
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