User-data scripts is not running on my custom AMI, but working in standard Amazon linux

Question

I searched a lot of topic about \"user-data script is not working\" in these few days, but until now, I haven\'t gotten any idea about my case yet, please help me to figure

Answer 1

I'm using CentOS and the logic for userdata there is simple:

• In the file /etc/rc.local there is a call for a initial.sh script, but it looks for a flag first:

  if [ -f /var/tmp/initial ]; then
      /var/tmp/initial.sh &
  fi
  

initial.sh is the file that does the execution of user-data, but in the end it deletes the flag. So, if you want your new AMI to execute user-data again, just create the flag again before create the image:

touch /var/tmp/initial