AWS EC2 实例无法与 ssh 连接

Question

我创建了一个 AWS EC2 实例（Centos），但我无法使用 ssh 访问它：

ssh -i "keypair.pem" root@ec2-IP.compute-1.amazonaws.com

我尝试将keypair.pem权限更改为 400/600 但无济于事！

每次我尝试连接到实例时，都会收到此错误！

ssh -i "keypair.pem" root@ec2-IP.compute-1.amazonaws.com
#################################################################
#                                                               #
#           YOU ARE ACCESSING A RESTRICTED SYSTEM.              #
#                                                               #
# This system is for use by authorised users only. All usage    #
# of this system is monitored and recorded by system personnel. #
# Unauthorised or improper use of this system may result in     #
# administrative and/or civil and criminal penalties.           #
#                                                               #
#                                                               #
# Disconnect IMMEDIATELY if you are not an authorised user!!!!  #
#                                                               #
#################################################################
Permission denied (publickey).

任何帮助将不胜感激！

Answer 1

将用户名从root更改为centos

查看 AWS 文档，登录用户名因操作系统而异