How can I use launch configurations to automatically install the CodeDeploy agent on an Amazon EC2 instance running Amazon Linux or Ubuntu?

Last updated: 2020-03-02

I want to launch configurations to automatically install the AWS CodeDeploy agent on an Amazon Elastic Compute Cloud (Amazon EC2) instance running Linux or Ubuntu.

Resolution

When you create a launch configuration, you can use the User data field to add a configuration script that runs when the instance starts. This shell script installs the CodeDeploy agent for all AWS Regions and supported Amazon Linux and Ubuntu distributions.

Note: You can enable CodeDeploy to auto update on boot by setting the AUTOUPDATE variable to true.

For example, you can add the following configuration script in the Amazon EC2 User data field:

#!/bin/bash -xe

## Code Deploy Agent Bootstrap Script##


exec > >(tee /var/log/user-data.log|logger -t user-data -s 2>/dev/console) 2>&1
AUTOUPDATE=false

function installdep(){

if [ ${PLAT} = "ubuntu" ]; then

  apt-get -y update
  # Satisfying even ubuntu older versions.
  apt-get -y install jq awscli ruby2.0 || apt-get -y install jq awscli ruby



elif [ ${PLAT} = "amz" ]; then
  yum -y update
  yum install -y aws-cli ruby jq

fi

}

function platformize(){

#Linux OS detection#
 if hash lsb_release; then
   echo "Ubuntu server OS detected"
   export PLAT="ubuntu"


elif hash yum; then
  echo "Amazon Linux detected"
  export PLAT="amz"

 else
   echo "Unsupported release"
   exit 1

 fi
}


function execute(){

if [ ${PLAT} = "ubuntu" ]; then

  cd /tmp/
  wget https://aws-codedeploy-${REGION}.s3.amazonaws.com/latest/install
  chmod +x ./install

  if ./install auto; then
    echo "Instalation completed"
      if ! ${AUTOUPDATE}; then
            echo "Disabling Auto Update"
            sed -i '/@reboot/d' /etc/cron.d/codedeploy-agent-update
            chattr +i /etc/cron.d/codedeploy-agent-update
            rm -f /tmp/install
      fi
    exit 0
  else
    echo "Instalation script failed, please investigate"
    rm -f /tmp/install
    exit 1
  fi

elif [ ${PLAT} = "amz" ]; then

  cd /tmp/
  wget https://aws-codedeploy-${REGION}.s3.amazonaws.com/latest/install
  chmod +x ./install

    if ./install auto; then
      echo "Instalation completed"
        if ! ${AUTOUPDATE}; then
            echo "Disabling auto update"
            sed -i '/@reboot/d' /etc/cron.d/codedeploy-agent-update
            chattr +i /etc/cron.d/codedeploy-agent-update
            rm -f /tmp/install
        fi
      exit 0
    else
      echo "Instalation script failed, please investigate"
      rm -f /tmp/install
      exit 1
    fi

else
  echo "Unsupported platform ''${PLAT}''"
fi

}

platformize
installdep
REGION=$(curl -s 169.254.169.254/latest/dynamic/instance-identity/document | jq -r ".region")
execute

create-launch-configuration

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