How to set Environment Variables on EC2 instance via User Data

Question

I am trying to set environment variables with EC2s user data, but nothing i do seems to work

here are the User data scripts i tried

#!/b         


        

Answer 1

After doing the stuffs in the user data script, the process exits. So, whatever environment variable you export will not be there in the next process. One way is to to put exports in the .bashrc file so that it gets available in the next session also.

    echo "export HOST_URL=checkEmai-LoadBala-ICHJ82KG5C7P-23235232.us-east-1.elb.amazonaws.com" >> ~/.bashrc