Ytdyklly

As soon as I correctly authenticate through ssh with private key, and I get the motd, the connection closes with exit status -1.

In auth.log I get disconnected by user.

/etc/passwd seems fine.

It worked perfectly last time I tried few days ago and I didn't touch anything server or client side.

What else can I try?

federico@debian:~$ ssh -vvvv -i ~/.ssh/id_rsa federico@192.168.1.72

OpenSSH_7.3p1 Debian-1, OpenSSL 1.0.2h  3 May 2016

debug1: Reading configuration data /etc/ssh/ssh_config

debug1: /etc/ssh/ssh_config line 19: Applying options for *

debug2: resolving "192.168.1.72" port 22

debug2: ssh_connect_direct: needpriv 0

debug1: Connecting to 192.168.1.72 [192.168.1.72] port 22.

debug1: Connection established.

debug1: key_load_public: No such file or directory

debug1: identity file /home/federico/.ssh/id_rsa type -1

debug1: key_load_public: No such file or directory

debug1: identity file /home/federico/.ssh/id_rsa-cert type -1

debug1: Enabling compatibility mode for protocol 2.0

debug1: Local version string SSH-2.0-OpenSSH_7.3p1 Debian-1

debug1: Remote protocol version 2.0, remote software version OpenSSH_6.7p1 Raspbian-5+deb8u3

debug1: match: OpenSSH_6.7p1 Raspbian-5+deb8u3 pat OpenSSH* compat 0x04000000

debug2: fd 3 setting O_NONBLOCK

debug1: Authenticating to 192.168.1.72:22 as 'federico'

debug3: send packet: type 20

debug1: SSH2_MSG_KEXINIT sent

debug3: receive packet: type 20

debug1: SSH2_MSG_KEXINIT received

debug2: local client KEXINIT proposal

debug2: KEX algorithms: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1,ext-info-c

debug2: host key algorithms: ecdsa-sha2-nistp256-cert-v01@openssh.com,ecdsa-sha2-nistp384-cert-v01@openssh.com,ecdsa-sha2-nistp521-cert-v01@openssh.com,ssh-ed25519-cert-v01@openssh.com,ssh-rsa-cert-v01@openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,rsa-sha2-512,rsa-sha2-256,ssh-rsa

debug2: ciphers ctos: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc

debug2: ciphers stoc: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,aes128-cbc,aes192-cbc,aes256-cbc,3des-cbc

debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1

debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1

debug2: compression ctos: none,zlib@openssh.com,zlib

debug2: compression stoc: none,zlib@openssh.com,zlib

debug2: languages ctos: 

debug2: languages stoc: 

debug2: first_kex_follows 0 

debug2: reserved 0 

debug2: peer server KEXINIT proposal

debug2: KEX algorithms: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1

debug2: host key algorithms: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519

debug2: ciphers ctos: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com

debug2: ciphers stoc: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com

debug2: MACs ctos: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1

debug2: MACs stoc: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1

debug2: compression ctos: none,zlib@openssh.com

debug2: compression stoc: none,zlib@openssh.com

debug2: languages ctos: 

debug2: languages stoc: 

debug2: first_kex_follows 0 

debug2: reserved 0 

debug1: kex: algorithm: curve25519-sha256@libssh.org

debug1: kex: host key algorithm: ecdsa-sha2-nistp256

debug1: kex: server->client cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none

debug1: kex: client->server cipher: chacha20-poly1305@openssh.com MAC: <implicit> compression: none

debug3: send packet: type 30

debug1: expecting SSH2_MSG_KEX_ECDH_REPLY

debug3: receive packet: type 31

debug1: Server host key: ecdsa-sha2-nistp256 SHA256:Gbla blah/s8

The authenticity of host '192.168.1.72 (192.168.1.72)' can't be established.

ECDSA key fingerprint is SHA256:bla blah.

Are you sure you want to continue connecting (yes/no)? yes

Failed to add the host to the list of known hosts (/home/federico/.ssh/known_hosts).

debug3: send packet: type 21

debug2: set_newkeys: mode 1

debug1: rekey after 134217728 blocks

debug1: SSH2_MSG_NEWKEYS sent

debug1: expecting SSH2_MSG_NEWKEYS

debug3: receive packet: type 21

debug2: set_newkeys: mode 0

debug1: rekey after 134217728 blocks

debug1: SSH2_MSG_NEWKEYS received

debug2: key: /home/federico/.ssh/id_rsa ((nil)), explicit

debug3: send packet: type 5

debug3: receive packet: type 6

debug2: service_accept: ssh-userauth

debug1: SSH2_MSG_SERVICE_ACCEPT received

debug3: send packet: type 50

debug3: receive packet: type 51

debug1: Authentications that can continue: publickey

debug3: start over, passed a different list publickey

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: Trying private key: /home/federico/.ssh/id_rsa

Enter passphrase for key '/home/federico/.ssh/id_rsa': 

debug3: sign_and_send_pubkey: RSA SHA256:blah blah 

debug3: send packet: type 50

debug2: we sent a publickey packet, wait for reply

debug3: receive packet: type 52

debug1: Authentication succeeded (publickey).

Authenticated to 192.168.1.72 ([192.168.1.72]:22).

debug1: channel 0: new [client-session]

debug3: ssh_session2_open: channel_new: 0

debug2: channel 0: send open

debug3: send packet: type 90

debug1: Requesting no-more-sessions@openssh.com

debug3: send packet: type 80

debug1: Entering interactive session.

debug1: pledge: network

debug3: receive packet: type 91

debug2: callback start

debug2: fd 3 setting TCP_NODELAY

debug3: ssh_packet_set_tos: set IP_TOS 0x10

debug2: client_session2_setup: id 0

debug2: channel 0: request pty-req confirm 1

debug3: send packet: type 98

debug1: Sending environment.

debug3: Ignored env LS_COLORS

debug3: Ignored env XDG_MENU_PREFIX

debug1: Sending env LANG = it_IT.UTF-8

debug2: channel 0: request env confirm 0

debug3: send packet: type 98

debug3: Ignored env GDM_LANG

debug3: Ignored env DISPLAY

debug3: Ignored env COLORTERM

debug3: Ignored env USERNAME

debug3: Ignored env XDG_VTNR

debug3: Ignored env SSH_AUTH_SOCK

debug3: Ignored env XDG_SESSION_ID

debug3: Ignored env USER

debug3: Ignored env DESKTOP_SESSION

debug3: Ignored env QT_QPA_PLATFORMTHEME

debug3: Ignored env PWD

debug3: Ignored env HOME

debug3: Ignored env SSH_AGENT_PID

debug3: Ignored env QT_ACCESSIBILITY

debug3: Ignored env XDG_SESSION_TYPE

debug3: Ignored env XDG_DATA_DIRS

debug3: Ignored env XDG_SESSION_DESKTOP

debug3: Ignored env GJS_DEBUG_OUTPUT

debug3: Ignored env GTK_MODULES

debug3: Ignored env WINDOWPATH

debug3: Ignored env TERM

debug3: Ignored env SHELL

debug3: Ignored env VTE_VERSION

debug3: Ignored env XDG_CURRENT_DESKTOP

debug3: Ignored env QT_LINUX_ACCESSIBILITY_ALWAYS_ON

debug3: Ignored env SHLVL

debug3: Ignored env XDG_SEAT

debug3: Ignored env WINDOWID

debug3: Ignored env GDMSESSION

debug3: Ignored env GNOME_DESKTOP_SESSION_ID

debug3: Ignored env LOGNAME

debug3: Ignored env DBUS_SESSION_BUS_ADDRESS

debug3: Ignored env XDG_RUNTIME_DIR

debug3: Ignored env XAUTHORITY

debug3: Ignored env PATH

debug3: Ignored env GJS_DEBUG_TOPICS

debug3: Ignored env SESSION_MANAGER

debug3: Ignored env _

debug2: channel 0: request shell confirm 1

debug3: send packet: type 98

debug2: callback done

debug2: channel 0: open confirm rwindow 0 rmax 32768

debug3: receive packet: type 99

debug2: channel_input_status_confirm: type 99 id 0

debug2: PTY allocation request accepted on channel 0

debug2: channel 0: rcvd adjust 2097152

debug3: receive packet: type 99

debug2: channel_input_status_confirm: type 99 id 0

debug2: shell request accepted on channel 0



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 Sep 28 20:28:52 2016 from 10.8.0.10

debug3: receive packet: type 98

debug1: client_input_channel_req: channel 0 rtype exit-signal reply 0

debug3: receive packet: type 98

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

debug3: receive packet: type 96

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

debug3: receive packet: type 97

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

debug3: send packet: type 97

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)



debug3: send packet: type 1

Connection to 192.168.1.72 closed.

Transferred: sent 2760, received 1888 bytes, in 0.3 seconds

Bytes per second: sent 8081.7, received 5528.3

debug1: Exit status -1

content of .bashrc

# ~/.bashrc: executed by bash(1) for non-login shells.

# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)

# for examples



# If not running interactively, don't do anything

case $- in

    *i*) ;;

      *) return;;

esac



# don't put duplicate lines or lines starting with space in the history.

# See bash(1) for more options

HISTCONTROL=ignoreboth



# append to the history file, don't overwrite it

shopt -s histappend



# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)

HISTSIZE=1000

HISTFILESIZE=2000



# check the window size after each command and, if necessary,

# update the values of LINES and COLUMNS.

shopt -s checkwinsize



# If set, the pattern "**" used in a pathname expansion context will

# match all files and zero or more directories and subdirectories.

#shopt -s globstar



# make less more friendly for non-text input files, see lesspipe(1)

#[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"



# 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, unless we know we "want" color)

case "$TERM" in

    xterm-color) color_prompt=yes;;

esac



# uncomment for a colored prompt, if the terminal has the capability; turned

# off by default to not distract the user: the focus in a terminal window

# should be on the output of commands, not on the prompt

force_color_prompt=yes



if [ -n "$force_color_prompt" ]; then

    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then

    # We have color support; assume it's compliant with Ecma-48

    # (ISO/IEC-6429). (Lack of such support is extremely rare, and such

    # a case would tend to support setf rather than setaf.)

    color_prompt=yes

    else

    color_prompt=

    fi

fi



if [ "$color_prompt" = yes ]; then

    PS1='${debian_chroot:+($debian_chroot)}[33[01;32m]u@h[33[00m]:[33[01;34m]w $[33[00m] '

else

    PS1='${debian_chroot:+($debian_chroot)}u@h:w$ '

fi

unset color_prompt force_color_prompt



# If this is an xterm set the title to user@host:dir

case "$TERM" in

xterm*|rxvt*)

    PS1="[e]0;${debian_chroot:+($debian_chroot)}u@h: wa]$PS1"

    ;;

*)

    ;;

esac



# enable color support of ls and also add handy aliases

if [ -x /usr/bin/dircolors ]; then

    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"

    alias ls='ls --color=auto'

    #alias dir='dir --color=auto'

    #alias vdir='vdir --color=auto'



    alias grep='grep --color=auto'

    alias fgrep='fgrep --color=auto'

    alias egrep='egrep --color=auto'

fi



# colored GCC warnings and errors

#export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'



# some more ls aliases

#alias ll='ls -l'

#alias la='ls -A'

#alias l='ls -CF'



# Alias definitions.

# You may want to put all your additions into a separate file like

# ~/.bash_aliases, instead of adding them here directly.

# See /usr/share/doc/bash-doc/examples in the bash-doc package.



if [ -f ~/.bash_aliases ]; then

    . ~/.bash_aliases

fi



# enable programmable completion features (you don't need to enable

# this, if it's already enabled in /etc/bash.bashrc and /etc/profile

# sources /etc/bash.bashrc).

if ! shopt -oq posix; then

  if [ -f /usr/share/bash-completion/bash_completion ]; then

    . /usr/share/bash-completion/bash_completion

  elif [ -f /etc/bash_completion ]; then

    . /etc/bash_completion

  fi

fi

content of .profile

# ~/.profile: executed by the command interpreter for login shells.

# This file is not read by bash(1), if ~/.bash_profile or ~/.bash_login

# exists.

# see /usr/share/doc/bash/examples/startup-files for examples.

# the files are located in the bash-doc package.



# the default umask is set in /etc/profile; for setting the umask

# for ssh logins, install and configure the libpam-umask package.

#umask 022



# if running bash

if [ -n "$BASH_VERSION" ]; then

    # include .bashrc if it exists

    if [ -f "$HOME/.bashrc" ]; then

    . "$HOME/.bashrc"

    fi

fi



# set PATH so it includes user's private bin if it exists

if [ -d "$HOME/bin" ] ; then

    PATH="$HOME/bin:$PATH"

fi

output of ssh -t federico@192.168.1.72 bash -ix

        federico@debian:~$ ssh -t federico@192.168.1.72 bash -ix

        The authenticity of host '192.168.1.72 (192.168.1.72)' can't be established.

        ECDSA key fingerprint is SHA256:blah blah.

        Are you sure you want to continue connecting (yes/no)? yes

        Failed to add the host to the list of known hosts (/home/federico/.ssh/known_hosts).

        Enter passphrase for key '/home/federico/.ssh/id_rsa': 

        Connection to 192.168.1.72 closed.

Output of grep fred /etc/passwd:

/etc/passw federico:x:1001:1001::/home/federico:/bin/bash