I am using Python sdk for azure creation virtual machine operation. I want some script to be executed whenever the VM starts. So, I have tried adding the custom-data while creating VM with Python.

My directory:

• user-data.sh
• create_VM.py

user-data.sh file will be similar to this:

#!/bin/bash
sudo apt install apache2 -y
sudo apt install git -y

I have used the base64 package on create_VM.py file, which looks like:

import base64...file = open("user-data.sh", "r")
a = file.read().encode()
encoded_string = base64.b64encode(a)...poller = compute_client.virtual_machines.create_or_update(RESOURCE_GROUP_NAME, VM_NAME,{"location": LOCATION,"storage_profile": {"image_reference": {"publisher": 'Canonical',"offer": "UbuntuServer","sku": "16.04.0-LTS","version": "latest"}},"hardware_profile": {"vm_size": "Standard_DS1_v2"},"os_profile": {"computer_name": VM_NAME,"admin_username": USERNAME,"admin_password": PASSWORD,"custom_data": encoded_string},"network_profile": {"network_interfaces": [{"id": nic_result.id,}]}}
)
...

The error I am getting is:

Azure Error: InvalidParameter\nMessage: Custom data in OSProfile must be in Base64 encoding and with a maximum length of 87380 characters.\nTarget: customData

How can I fix the issue?

please try this one, it's working on mine.

import base64...file = open("user-data.sh", "r")
a = file.read().encode()...CUSTOM_DATA = base64.b64encode(a.encode('utf-8')).decode('latin-1')