Userdata scripts are not executed when using Config drive on XCPNG

[vladimirpetrov]

problem

While testing #10912 I tried to start a VM with the following script in the userdata:

## template: jinja
#cloud-config
runcmd:
 - echo 'TEST' >> /tmp/test1

After the VM was started, the file /tmp/test1 was missing, meaning that the script didn't execute.

versions

I used a CentOS 7 template with cloud-init, on a isolated network with ConfigDrive for userdata enabled. The same scenario works with KVM. Tested on CloudStack version 4.19.

The steps to reproduce the bug

1. Create Isolated network offering with ConfigDrive support for userdata and a network using this offering.
2. Prepare some userdata script(s).
3. Deploy a VM from a template with cloud-init installed, on the network we prepared in step 1, using the userdata prepared in step 2.

Expected result: The script must be executed on the VM start.

Actual result: The script is not executed.

What to do about it?

Improve XCPNG (XenServer) handling of ConfigDrive.

[weizhouapache]

@vladimirpetrov
can you check if configdrive ISO is mounted ?

mkdir /mnt/sr0
mount /dev/sr0 /mnt/sr0

then check the userdata or user-data file ?

[vladimirpetrov]

The config drive can be mounted and I can see my userdata there, it was just not executed on VM start.

[weizhouapache]

The config drive can be mounted and I can see my userdata there, it was just not executed on VM start.

thanks @vladimirpetrov
if so, configdrive ISO looks ok. the issue might be related to the template (especially the cloud-init settings)

[vladimirpetrov]

Ok, it works with another template so the problem was there, closing the issue.