Ubuntu settings allow root login

Since the default user name of Tencent Cloud host ubuntu system is ubuntu, and I don't like to sudo every time I do something, the method to enable root user login
is as follows:
1. Modify the root password

1. sudo passwd root
   

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Enter the password (usually the same as the ubuntu password, easy to remember)
 
2. Modify ssh configuration

1. sudo vi /etc/ssh/sshd_config

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Find PermitRootLogin and change it to yes
 

Save and exit and restart the ssh service.

1. sudo service ssh  restart

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