Custom Configuration Module

Custom 3rd-party out-of-tree configuration modules can be added to cloud-init by:

1. Implement a config module in a Python file with its name starting with cc_.

2. Place the file where the rest of config modules are located. On Ubuntu this path is typically: /usr/lib/python3/dist-packages/cloudinit/config/.

3. Extend the base-configuration’s cloud_init_modules, cloud_config_modules or cloud_final_modules to let the config module run on one of those stages.

Warning

The config jsonschema validation functionality is going to complain about unknown config keys introduced by custom modules and there is not an easy way for custom modules to define their keys schema-wise.