Running Ubuntu on AWS EC2 | 點燈坊

We can run Ubuntu server on AWS EC2 with public IP address.

Version

Ubuntu 20.04

EC2

• Instances : select instances on the left menu
• Launch Instances : build new Linux server

Ubuntu

• Free tier only : select Free tier only to show only free images on the left
• Ubuntu Server 20.04 LTS : build new Linux Server by Ubuntu Server 20.04 LTS

Instance Type

• Select t2.micro for free
• Click Review and Launch to accept default configuration and launch server directly

Review Instance Launch

• We are warned that default security group may be accessible from any IP address. For better security concerns, it would be better to only allow access from known IP address only
• If we want to use other port (e.g. HTTP (80)), we have to open that port manually

Key Pair

• Select existing key pair
• Click Launch Instances to run server

Launch Status

Run Linux server successfully.

Instance Summary

We can get public IP of Linux server on Public IPv4 address section.

SSH

$ ssh -i MyEC2.pem ubuntu@18.176.57.41

Use SSH to connect to Linux server :

• -i : specify the location of pem
• ubuntu : the user for Ubuntu server
• @ : public IP address of Ubuntu server

Type yes if we connect to Linux server first time.

Conclusion

• We may encounter SSH connection error if we just use downloaded pem, try chmod 400 myEC2.pem to change permission