Linux SH remote connection failed Sshd.service start failed

Today accidentally executed the Chmod-r 777/var on this machine's virtual machine

Causes all permissions in the/var directory to be all 777

Where the/VAR/EMPTY/SSHD directory permission must be 744, but was changed to 777, causing the SH remote connection failed

Remote SH connection Condition 1. Turn off the firewall or open SH port 22

　　Reference:https://www.cnblogs.com/zwcry/p/9457435.html

Try SH remote connection 2. View/VAR/EMPTY/SSHD Permissions

ll/var/empty/

　　Non 744 to 744

　　chmod 744-r/var/empty/sshd

try SH remote connection3. See if Sshd.service is started

　　Systemctl Status Sshd.service

View status display information, running for success

If it fails, first check the status error message

View System log information again

　　Cat/var/log/messages　　

　　Based on error information groping or Baidu solution

Linux SH remote connection failed Sshd.service start failed