AWS EC2 인스턴스 시작하기

chmod 400 my-key.pem
ssh -i my-key.pem ubuntu@<EC2-PUBLIC-IP>

# ~/.ssh/config 등록
Host myserver
    HostName 123.45.67.89
    User ubuntu
    IdentityFile ~/.ssh/my-key.pem
    ServerAliveInterval 60

ssh myserver

sudo apt update && sudo apt upgrade -y

sudo apt install -y curl wget git vim htop build-essential ufw fail2ban

sudo timedatectl set-timezone Asia/Seoul

# 스왑 파일 (t3.micro 메모리 부족 대비)
sudo fallocate -l 2G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab

sudo ufw allow 22/tcp && sudo ufw allow 80/tcp && sudo ufw allow 443/tcp
sudo ufw enable

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip && sudo ./aws/install

aws configure
# Region: ap-northeast-2 (서울)

aws ec2 describe-instances \
  --query 'Reservations[*].Instances[*].[InstanceId,State.Name,PublicIpAddress]' \
  --output table