When using Tencent cloud for the first time, you can only use webshell connection instead of SSH connection.

Ubuntu How the system works root User login instance ？

Ubuntu The default user name of the system is ubuntu, It is not set by default during installation root Account and password . If you need , Allow... Can be turned on in settings root The user login . The specific operation steps are as follows ：

1. Use ubuntu Log in to the lightweight application server with your account .
2. Execute the following command , Set up root password .

   sudo passwd root

3. Input root Password , Press  Enter.
4. Repeat input root Password , Press  Enter.
   Return the following information , It indicates that the root Password set successfully .

   passwd: password updated successfully

5. Execute the following command , open  sshd_config  The configuration file .

   sudo vi /etc/ssh/sshd_config 

6. Press  i  Switch to edit mode , find  #Authentication, take  PermitRootLogin  Parameter is modified as  yes. If  PermitRootLogin  Parameter is annotated , Please remove the comment symbol in the first line （#）. As shown in the figure below ：

   

7. find  #Authentication, take  PasswordAuthentication  Parameter is modified as yes. As shown in the figure below ：

   explain

   if  sshd_config  There is no such configuration item in the configuration file , Then add  PasswordAuthentication yes  Item can .

   

8. Press  Esc, Input  :wq, Save the file and return to .
9. Execute the following command , restart ssh service .

   sudo service ssh restart

10. Reference resources   Log in using remote login software Linux example  , And log in with the following information Ubuntu Lightweight application servers ：
    • user name ：root
    • The login password ： stay   step 2  Password set in

The above is the official document of Tencent cloud . There is less emphasis here , Namely PasswordAuthentication yes, The default here is （#PasswordAuthentication prohit password） Need to get rid of the comments # Then change it to  PasswordAuthentication yes

So you can remote ssh Log on to the .