问题一：
INFO: 1 key(s) remain to be installed – if you are prompted now it is to install the new keys Permission denied (publickey,gssapi-keyex,gssapi-with-mic)
问题二：
cannot change directory to /home/lwk: Permission denied
问题三：
attempting to log in with the new key(s), to filter out any that are already installed
问题四：
su: cannot open session: Permission denied
问题五：
on ssh:notty There was 1 failed login attempt since the last successful login
问题六：
su: warning: cannot change directory to /home/lwk: Permission denied
问题七：
ssh-copy-id permission denied
问题八：
bash: /home/lwk/.bashrc: Permission denied
问题九：
Last failed login: Thu Jun 28 21:16:06 CST 2018 from 112.17.81.55 on ssh:notty