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SSH：无法登录

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SSH：无法登录

我设置了 sshd 无密码服务器，遇到以下问题：

如果我登录我的 16.04 盒子身体上的，之后我可以通过 ssh 登录它。

如果我不这样做（例如远程重新启动我的机器），我将无法通过 ssh 登录它，因为它拒绝我的密钥。

建议？

注意：这是我的配置文件：

# Package generated configuration file
# See the sshd_config(5) manpage for details

# What ports, IPs and protocols we listen for
Port 1907
# 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 prohibit-password
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 no

# 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 /usr/lib/openssh/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 no
#
# Compression
Compression yes

答案1

authorized_keys如果您的主目录已加密，则 SSH在您登录之前无权访问该目录。您必须使用密码登录才能解密您的主目录。

一种解决方法是更改​​ SSH 配置中授权密钥的来源，如评论中所述。另一种方法是将您的文件复制authorized_keys到您的裸主目录。假设您拥有管理员权限，您可以：

  • 在另一个位置重新挂载根设备，以便您可以访问您的裸主目录（登录时该目录被挂载在其上的加密目录所掩盖）
  • 复制到~/.ssh/authorized_keys那里，复制结构和权限

首先找出安装在哪个设备上/（使用lsblk、等 -例如mount我将使用）。/dev/sda1然后：

sudo mount /dev/sda1 /mnt
mkdir "/mnt/$HOME/.ssh"
cp "$HOME/.ssh/authorized_keys" "/mnt/$HOME/.ssh/authorized_keys" 
chmod -R og-rwx "/mnt/$HOME/.ssh"

每次更新时都必须重复复制。

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