It’s throwing an error while ssh connection.
I tried to login with EC2 serial console, it works for me, but I’m unable to connect with internet and I’m unable to install any packages.
Logs
I rebooted that instance and got these logs, I also stopped my instance and restarted it, but that didn’t work for me.
Is there any way to connect this instance or get backup from that instance?
1
For issue with connection via ssh, check the inbound rules in security group attached to your instance. Check if port 22 is open for your IP. If not then add a rule allowing your IP to connect on port 22.
Seems like your instance is in a private subnet. For it to communicate with the internet and download packages you’ll need a NAT gateway in public subnet. See here how to setup a NAT gateway.