User Data is not running on EC2 instance in Private VPC subnet

Question

This is the user data used:

#!/bin/bash
yum install httpd -y
yum update -y
aws s3 cp s3://YOURBUCKETNAMEHERE/index.html /var/www/html/
service httpd start
chkconfig httpd on

NAT gateway is configured for the private EC2 instance and also s3fullaccess permissions are given.

Please help me troubleshoot!

Can you also check (1) if you can login to instance and check internet connectivity (2) if step 1 is good, check if httpd is installed? If both steps are done, do what bwest recommeneded: add some debug statements. — krishna_mee2004, Mar 05 '19 at 22:56
What is in the `/var/log/cloud-init-output.log` output log file? — John Rotenstein, Mar 05 '19 at 22:56

bwest · Accepted Answer · 2019-03-05T22:39:35.057

You can add some code to the start of your user-data script to redirect the output to logs.

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

Then you can use those logs to troubleshoot from the AWS Console. Select the instance, then Actions menu -> Instance settings -> Get system log. Here is more documentation on what to add to your bash script, as well as a video that shows where to find the logs.

User Data is not running on EC2 instance in Private VPC subnet

1 Answers1