Estou tentando montar uma sftp
conexão em uma pasta usando sshfs
o seguinte comando que gera um erro.
~$ sshfs admin@example.com:/ testfo
remote host has disconnected
O mesmo erro ocorre se eu fizer o SSH no sistema e repetir o comando com localhost
. Este comando também funcionou com outra máquina, portanto, o problema está em algum lugar no servidor.
~$ cat /var/log/auth.log
[...]
May 24 22:49:43 example sshd[20095]: Accepted publickey for admin from 24.111.222.33 port 47086 ssh2: RSA ad:xx:6e:xx:14:xx:bd:b5:xx:cb:66:xx:xx:xx:a3:ac
May 24 22:49:43 example sshd[20095]: pam_unix(sshd:session): session opened for user admin by (uid=0)
May 24 22:49:43 example systemd-logind[812]: Removed session 60.
May 24 22:49:43 example systemd-logind[812]: New session 61 of user admin.
May 24 22:49:44 example sshd[20143]: Received disconnect from 24.203.164.45: 11: disconnected by admin
May 24 22:49:44 example sshd[20095]: pam_unix(sshd:session): session closed for user admin
O ~/.ssh
diretório é de propriedade do administrador, pois eu vi isso como uma tentativa de depuração para um problema semelhante.
Informações adicionais para referência futura:
O problema não está no SSH, mas no SFTP. Isso se manifesta pelo fato de que as conexões SSH funcionam corretamente, mas o SFTP sempre falha. Tentar SFTP resulta emReceived unexpected end-of-file from SFTP server
O problema não está relacionado aos scripts de logon gerados pelas seqüências de caracteres (por exemplo ~/.bashrc
).
O problema está presente de todos os usuários (incluindo raiz).
Aqui está minha configuração sshd ( /etc/ssh/sshd_config
):
# Package generated configuration file
# See the sshd_config(5) manpage for details
# What ports, IPs and protocols we listen for
Port 22
# Use these options to restrict which interfaces/protocols sshd will bind to
#ListenAddress ::
#ListenAddress 0.0.0.0
Protocol 2
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
#Privilege Separation is turned on for security
UsePrivilegeSeparation yes
# Lifetime and size of ephemeral version 1 server key
KeyRegenerationInterval 3600
ServerKeyBits 1024
# Logging
SyslogFacility AUTH
LogLevel INFO
# Authentication:
LoginGraceTime 120
PermitRootLogin yes
StrictModes yes
RSAAuthentication yes
PubkeyAuthentication yes
#AuthorizedKeysFile %h/.ssh/authorized_keys
# Don't read the user's ~/.rhosts and ~/.shosts files
IgnoreRhosts yes
# For this to work you will also need host keys in /etc/ssh_known_hosts
RhostsRSAAuthentication no
# similar for protocol version 2
HostbasedAuthentication no
# Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication
#IgnoreUserKnownHosts yes
# To enable empty passwords, change to yes (NOT RECOMMENDED)
PermitEmptyPasswords no
# Change to yes to enable challenge-response passwords (beware issues with
# some PAM modules and threads)
ChallengeResponseAuthentication no
# Change to no to disable tunnelled clear text passwords
#PasswordAuthentication yes
# Kerberos options
#KerberosAuthentication no
#KerberosGetAFSToken no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes
# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes
X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no
#MaxStartups 10:30:60
#Banner /etc/issue.net
# Allow client to pass locale environment variables
AcceptEnv LANG LC_*
Subsystem sftp sftp-server
# Set this to 'yes' to enable PAM authentication, account processing,
# and session processing. If this is enabled, PAM authentication will
# be allowed through the ChallengeResponseAuthentication and
# PasswordAuthentication. Depending on your PAM configuration,
# PAM authentication via ChallengeResponseAuthentication may bypass
# the setting of "PermitRootLogin without-password".
# If you just want the PAM account and session checks to run without
# PAM authentication, then enable this but set PasswordAuthentication
# and ChallengeResponseAuthentication to 'no'.
UsePAM yes
sftp-server
pacote está instalado. ( sudo apt-get install openssh-sftp-server
)
Received unexpected end-of-file from SFTP server
sftp
para diferentes usuários? 3) Como você está sshd_config
no servidor? 4) Como é a sua ~/.bashrc
aparência?
which sftp-server
. Subsistema deve ser Subsystem sftp /usr/lib/openssh/sftp-server
. Você sftp-server
instalou? apt-get install openssh-sftp-server
.
sftp
lá diretamente? Qual é o conteúdo~/.bashrc
ou outros arquivos de inicialização no diretório inicial do servidor?