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EC2 Setup

Terraform and similar IAC services are one of the most enjoyable recent innovations in the world of software engineering, but there are still times when this is overkill. I often want to quickly spin up an EC2 instance, clone a repo or pull a docker image, and run a service. I find myself endlessly repeating the same steps, and endlessly heading to project download pages to remind myself how to install a particular tool. So from now on, I dump it all here.

  • first things first, to even SSH to a new EC2 instance, the .pem file permissions need to be changed: $ chmod 400 <path_to_permission_file>.pem

  • install docker (& allow running without sudo)

    • $ curl -fsSL https://get.docker.com -o get-docker.sh
    • $ sudo sh get-docker.sh
    • $ sudo usermod -a -G docker <ec2_username>

  • install docker-compose (& allow running without sudo)

    • to install the latest version (provided you have jq installed):
      • $ VERSION=$(curl --silent https://api.github.com/repos/docker/compose/releases/latest | jq .name -r)
      • $ sudo curl -L "https://github.com/docker/compose/releases/download/${VERSION}/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
    • to install a specific version, e.g. 1.27.4
      • $ sudo curl -L "https://github.com/docker/compose/releases/download/1.27.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
    • $ sudo chmod +x /usr/local/bin/docker-compose to apply executable permissions to the binary
    • $ sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose so we don't need sudo

  • Remember to set appropriate http(s) inbound & outbound rules in the AWS EC2 console! Easy to forget and frustrating to debug...

  • If using a server that requires an SSL certificate, follow the instructions in certbot.md

  • If you want to set the Cloudwatch Agent for fine-grained system & application monitoring, follow the instructions in cloudwatch.md