Cannot connect to EC2 by EC2 Instance Connect and SSH Client

Question

Hello all there,

I cannot connect to EC2 by EC2 Instance Connect or SSH Client! What can be the cause?

![](/media/postImages/original/IM8koiP0VUTzSbXulZhozd6w)
![](/media/postImages/original/IM05piIdcrQOaVyaUcvmI3zg)

Accepted Answer

It seems the problem was caused by memory limit. When I tried to install the node modules, the server hanged and stopped working, and I needed to restart the instance again.

Answer

Hello.

Are any errors output when connecting?  
If there is a timeout error, please check whether SSH is allowed in the inbound rules of the EC2 security group.  
Check out the documentation below for other troubleshooting methods.  
https://repost.aws/knowledge-center/ec2-linux-ssh-troubleshooting

Cannot connect to EC2 by EC2 Instance Connect and SSH Client

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