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On the first day after the festival, the virtual machine was updated. After restarting, SSH could not be accessed. I quickly logged in to the manufacturer’s control panel to have a look. I could only use the provided online shell to enter the system to find problems. First, I manually restarted the SSH service

Failed to start OpenBSD Secure Shell server

Hurry to Baidu, use systemctl status ssh.service to check, refer to two articles, and carefully check/etc/SSH/sshd_ Finally, it runs

sshd -T

Create directory MKDIR/var/run/sshd

Finally, restart the SSH service and check the status. You can also log in locally