@larsenlouis 另外由客户端生成密钥和服务端生成密钥都试过，均失败

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

# What ports, IPs and protocols we listen for
Port 63842
# 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 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 yes

ssh config ：
Host hexo
HostName xxx
Port 63842
User git
IdentityFile ~/.ssh/hexo

@larsenlouis 没有啊- -都是 pts ？

@larsenlouis 对，安装 ubuntu 的时候确实会送这个。问题是我是 VPS 啊。。。 root 用 ssh 可以正常访问的。我都进不去服务器本地- -

@oxoxoxox 这个刚刚尝试了一下，貌似并没有什么用。。。/var/run/auth.log 里也没有报权限错误

@larsenlouis 密码可以登录。我用 adduser 命令添加的用户，应该不会自动加密吧？ root 是可以正常访问 git 用户的$home 目录的

@crazycen 请问.ssh 目录不手动建立该如何建立呢？另外生成 key 的方式是不是运行 ssh-keygen 命令？

@wweir 我用的是 adduser 命令添加用户，自动建立了主目录，刚刚又去检查了一下，$HOME 的权限是正确的

@finian 实际上我没有改过配置，那个配置是默认就有的。我也尝试过重启 sshd ，没有效果。私钥是这个，没有出错。

@ipeony .ssh 目录下 config 文件是用 IdentifyFile 选项加载 privatekey 么？如果是的话我应该没有配置错。
另外和能正常登陆的 root 用户的-vvv 比较了一下，好像就只有 debug 信息的最后几行，正常的是
debug2: we sent a publickey packet, wait for reply
之后就收到 auth succeed 的回复然后进入 shell

@shenqi 您觉得是哪里描述不清楚呢？请指出

@sopato auth.log 没有任何错误……而且我还运行过 tail -f /var/run/auth.log ，在连接失败时该日志没有任何变化

@julyclyde 对，这个我知道。然而我在 php.ini 里配置了 default-socket 也无果

@kn007 可能原因是我开了 tincd ，怪不得最近这几天才挂……

@kn007 lo 是有的，这个我确认

@kn007 好了，非常感谢！

@extreme 对啊，我自己都觉得很奇怪。。。
另外有人跟我说他的 percona 也出过一次各种地方毫无错误但是就是连不上启动不了的错误……

@kn007
mysql> use mysql; select host,user from user ;
Database changed
+-----------+-----------+
| host | user |
+-----------+-----------+
| localhost | mysql.sys |
| localhost | root |
+-----------+-----------+
2 rows in set (0.00 sec)

@kn007 是的。。。重启并且执行了这个刷新权限的语句。。。然而 依然无解 http://ww3.sinaimg.cn/bmiddle/62e721e4gw1et02ek7u61j200k00k3y9.jpg