Log in to Alibaba cloud server with a key

Select the key method when creating the server

After selecting the key method , It will be generated and downloaded through the browser aliyun.pem The key file , Save the key file to ～/.ssh/ Under the table of contents , And modify the access rights of the key

chmod 600 aliyun.pem 

Log in to the server with the key

Input... At the terminal

ssh -i  ～/.ssh/aliyun.pem [email protected] Address 

The following prompt appears , The login is successful

Welcome to Alibaba Cloud Elastic Compute Service !

Activate the web console with: systemctl enable --now cockpit.socket

Last login: Sat Jun  5 18:50:11 2021 from 223.104.39.200

Create a quick login

Every time you log in, you need to enter your user name ip Port information , To configure ssh Fast login, more convenient login server ;
In the local ~/.ssh/config Add... To the configuration file ssh server information , Format ：

Host            aliyun            # Custom alias 
HostName        hostname         # The server ip or domain
Port            port             #ssh Server port , The default is 22
User            user             #ssh Server user name 
IdentityFile    ~/.ssh/aliyun.pem    # Private key file 

Enter the following command at the terminal , Quick login server

ssh aliyun

The following prompt appears , The login is successful

Welcome to Alibaba Cloud Elastic Compute Service !

Activate the web console with: systemctl enable --now cockpit.socket

Last login: Sat Jun  5 18:59:15 2021 from 223.104.39.200

In Ali cloud ECS New user on server , Unable to get ssh Connection login solution ：

use root Users log on to the server , find /ect/ssh/sshd_config file

take PasswordAuthentication no It is amended as follows ：
PasswordAuthentication yes