Terraform module reference

Reference for the Charmed Apache Kafka Terraform module, used with the Juju Terraform provider.

See also: How to deploy via Terraform.

Input variables

Variable	Type	Default	Description
model_uuid	string	(required)	Juju model UUID to deploy to
profile	string	"testing"	Deployment profile: "production" or "testing"
broker	object	{}	Apache Kafka broker application configuration
controller	object	{}	Apache Kafka KRaft controller application configuration
integrator	object	{}	Data Integrator application configuration
connect	object	{}	Kafka Connect application configuration
karapace	object	{}	Karapace Schema Registry application configuration
ui	object	{}	Kafbat Kafka UI application configuration
tls_offer	string	null	TLS provider endpoint for client relations
cos_offers	object	{}	COS offers for observability (dashboard, metrics, logging, tracing)

Application configuration objects

The broker, controller, connect, karapace, ui, and integrator variables accept objects with the following fields:

Field	Type	Description
app_name	string	Name of the Juju application
channel	string	Charm channel to deploy from
config	map(string)	Application configuration
constraints	string	Juju constraints (default: "arch=amd64")
resources	map(string)	Charm resources
revision	number	Charm revision to deploy
base	string	Application base (default: "ubuntu@24.04")
units	number	Number of units to deploy
storage	map(string)	Storage directives (broker and controller only)
machines	set(string)	List of machine resources for deployment

All fields are optional — defaults are set per application. See the module source for the full list of defaults.

Outputs

Output	Description
app_names	Map of all deployed application names
offers	Map of cross-model offer URLs (kafka-client, connect-client, karapace-client)