CODEWITHSUNDEEP
amazon-web-servicesterraform
Karthik Thovinakere
Karthik Thovinakere

Reputation: 41

How to pass a variable to a script in user_data

I am trying to run a bash script file in user_data that prompts the user for a domain. Here is the domain part of the commands that are of .sh file itself.

DOMAIN=$1
if [ -z $1 ]
then
echo ""
printf "Enter the domain you want to host BookStack and press [ENTER]\nExamples: my-site.com or docs.my-site.com\n"
read DOMAIN
fi

I would like to pass my EIP, aws_eip.one.public_ip as an input to the script.

Here is the actual commands that are run in the user_data section.

#!/bin/bash
      sudo apt install wget
       # Ensure you have read the above information about what this script does before executing these commands.
      sudo apt install -y wget
      
      # Download the script
      wget https://raw.githubusercontent.com/BookStackApp/devops/main/scripts/installation-ubuntu-18.04.sh

      # Make it executable
      chmod a+x installation-ubuntu-18.04.sh

      # Run the script with admin permissions
      sudo ./installation-ubuntu-18.04.sh $ (this is where I would like to pass my eip variable)

Appreciate the help!

Upvotes: 1

Views: 655

Answers (1)

Marcin
Marcin

Reputation: 238279

Get the IP from the ec2 metadata in your user data:

curl http://169.254.169.254/latest/meta-data/public-ipv4

Upvotes: 3

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