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you should check the cloud init logs on the instance

I checked those and no updates regarding userdata, i doubt it’s executing the userdata part.

can you see the userdata on the instance in the console?

No actually, it’s not running anyway, that’s the reason i am concerned if it’s right method to do so

can you print the output of
```aws ec2 describe-instance-attribute --attribute userData --instance-id &lt;instance created with pulumi&gt;```

If you base64 decode that, it looks like there's some binary data at the end, so I think your input value for userdata might be invalid.

Also, I _think_ the absolute first line of the value must start with `#!` e.g. `#!/bin/bash` and it looks like you have an empty first line.

Ohh that make sense <@UDEJ1F5SQ> I agree on the first line should be #!/bin/bash

I tried to put /bin/bash on first line, yet not success.

Well i have taken reference from this example, where it shows bin/bash starts from next line
<https://www.pulumi.com/docs/tutorials/aws/ec2-webserver/>

Can you try a simpler script with `echo "Hiiii!"` or similar to see if that works?

Still didn’t work, not sure what’s wrong here.

You need to encode the script with base64. In Python, use `base64.standard_b64encode(...)`.

(I never set it to the EC2 instance directly, maybe Pulumi encodes it at that point)