ssh 从 linux 进入 mac - 权限被拒绝

Question

我正在 Windows 7 主机上运行 Oracle Linux VM，并且正在尝试通过 ssh 连接到我的 MacBook。

我已经在我的 Mac 中创建了私钥/公钥。我已将id_rsa.pub内容复制到authorized_keys文件.ssh夹中的文件中。我已经更改了当前用户的authorized_keys权限600。对于权限~和~/.ssh已更改为700。

我还使用以下命令将id_rsa.pub内容从 Oracle Linux VM复制到了 authorized_keys 文件

ssh-copy-id

在我的 Mac 中，我还有一个 Oracle Linux VM，我可以从 Windows 机器中的 Oracle Linux VM 完美地 ssh 到其中。

但是，我无法仅使用以下方式 SSH 进入我的 Mac： ssh macdomain

我必须使用：ssh username@macdomain ssh 成功。如果没有用户名，它会要求我输入密码并最终导致：

Permission denied (publickey, keyboard-interactive)

这是我的 sshd_config 文件：

#   $OpenBSD: sshd_config,v 1.81 2009/10/08 14:03:41 markus Exp $

# This is the sshd server system-wide configuration file.  See
# sshd_config(5) for more information.

# This sshd was compiled with PATH=/usr/bin:/bin:/usr/sbin:/sbin

# The strategy used for options in the default sshd_config shipped with
# OpenSSH is to specify options with their default value where
# possible, but leave them commented.  Uncommented options change a
# default value.

#Port 22
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::

# The default requires explicit activation of protocol 1
#Protocol 2

# HostKey for protocol version 1
#HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
#HostKey /etc/ssh/ssh_host_rsa_key
#HostKey /etc/ssh/ssh_host_dsa_key

# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 1h
#ServerKeyBits 1024

# Logging
# obsoletes QuietMode and FascistLogging
SyslogFacility AUTHPRIV
#LogLevel INFO

# Authentication:

#LoginGraceTime 2m
#PermitRootLogin yes
#StrictModes no
#MaxAuthTries 6
#MaxSessions 10

#RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile  .ssh/authorized_keys
AllowUsers username
# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
#RhostsRSAAuthentication no
# similar for protocol version 2
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# RhostsRSAAuthentication and HostbasedAuthentication
#IgnoreUserKnownHosts no
# Don't read the user's ~/.rhosts and ~/.shosts files
#IgnoreRhosts yes

# To disable tunneled clear text passwords both PasswordAuthentication and
# ChallengeResponseAuthentication must be set to "no".
#PasswordAuthentication no
#PermitEmptyPasswords no

# Change to no to disable s/key passwords
#ChallengeResponseAuthentication yes

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

# GSSAPI options
#GSSAPIAuthentication no
#GSSAPICleanupCredentials yes
#GSSAPIStrictAcceptorCheck yes
#GSSAPIKeyExchange no

# 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'.
# Also, PAM will deny null passwords by default.  If you need to allow
# null passwords, add the " nullok" option to the end of the
# securityserver.so line in /etc/pam.d/sshd.
#UsePAM yes

#AllowAgentForwarding yes
#AllowTcpForwarding yes
#GatewayPorts no
#X11Forwarding no
#X11DisplayOffset 10
#X11UseLocalhost yes
#PrintMotd yes
#PrintLastLog yes
#TCPKeepAlive yes
#UseLogin no
#UsePrivilegeSeparation yes
#PermitUserEnvironment no
#Compression delayed
#ClientAliveInterval 0
#ClientAliveCountMax 3
#UseDNS yes
#PidFile /var/run/sshd.pid
#MaxStartups 10
#PermitTunnel no
#ChrootDirectory none

# pass locale information
AcceptEnv LANG LC_*

# no default banner path
#Banner none

# override default of no subsystems
Subsystem   sftp    /usr/libexec/sftp-server

# Example of overriding settings on a per-user basis
#Match User anoncvs
#   X11Forwarding no
#   AllowTcpForwarding no
#   ForceCommand cvs server

# XAuthLocation added by XQuartz (http://xquartz.macosforge.org)
XAuthLocation /opt/X11/bin/xauth

我用谷歌搜索并查看了几乎所有相关主题，但无济于事。

Answer 1

您在 VM 中的用户名与您在 Mac 上的用户名不同。默认情况下，ssh如果您未明确指定，则假定用户名相同。它试图登录到一个不存在的用户（或者你还没有设置），这就是它总是失败的原因。

为了避免这种情况，您可以每次都指定用户名，或者像这样在 VM 中设置您的.ssh/config文件：

Host mac
    Hostname macdomain
    User yourmacusername

这将仅覆盖该主机的默认用户名。ssh mac如果您愿意，您也可以使用，而不是使用主机名。