# brew installed
ec2-instance-selector --memory 8 -o interactive -a x86_64

aws ec2 describe-images --filters 'Name=name,Values=ubuntu/images/hvm-ssd/ubuntu-*

• EC2 User Guide

• linux emergency mode

• Service Quotas to increase Elastic IPs

• Read Instance metadata

  • instancedata-data-retrieval

  curl http://169.254.169.254/latest/meta-data/
  curl http://169.254.169.254/latest/meta-data/iam/info/

• User Data

  cd /var/lib/cloud/instances/i-xxx/user-data.txt
  
  # logs
  less /var/log/cloud-init.log
  journalctl -xu cloud-final -f

• EC2 2nd NIC

  • ssh-connection-errors

  • secondary-public-ip

  • ec2-secondary-interface

  • Get Two Public IPs on an Amazon EC2 Instance for Free

  • Correct way to route between 2 interfaces with netplan in Ubuntu 18.04

  • How can I make my secondary network interface work in my Ubuntu EC2 instance?

  • Ubuntu 18.04 Asymmetric Routing Question (Newbie Question)

  • https://wbhegedus.me/avoiding-asymmetric-routing/

  • https://netplan.io/reference/

  • https://ubuntu.com/server/docs/network-configuration

• Spot

  • Spot Pricing — Instance Advisor

  • https://ec2spotworkshops.com/