Rolebinding in Multi-tenant Kafka Environments on Confluent Cloud

Question

Pulumi · Accepted Answer

To create a RoleBinding in a multi-tenant Kafka environment on Confluent Cloud using Pulumi, you'll first need to define a few resources:

1. **Environment**: This is where you group Confluent Cloud resources, such as Kafka clusters.
2. **KafkaCluster**: This is your Kafka service instance within the environment.
3. **RoleBinding**: This resource is used to define a role assigned to a principal (user) that grants permissions to a specific resource within Confluent Cloud.

Here is how you can set up a simple environment, Kafka cluster, and role binding using Pulumi:

```python
import pulumi
import pulumi_confluentcloud as confluentcloud

# Define a Confluent Cloud environment.
# Environments allow you to organize your Confluent Cloud resources across your teams.
environment = confluentcloud.Environment("my-environment",
    display_name="My Environment"
)

# Create a Kafka cluster in the environment.
# In a production system, you would likely configure more details according to your requirements.
kafka_cluster = confluentcloud.KafkaCluster("my-kafka-cluster",
    environment=environment.id,
    cloud="aws",  # Specify your cloud provider, AWS in this case.
    region="us-west-2",  # Specify the region where your cluster will be hosted.
    availability="SINGLE_ZONE",  # Choose between SINGLE_ZONE or MULTI_ZONE.
    service_type="BASIC",  # Service type can also be STANDARD or DEDICATED.
    display_name="My Kafka Cluster"
)

# RoleBinding to grant a user the ability to manage the Kafka cluster.
# Replace 'user:1234' with the principal name of the user you wish to grant access to.
role_binding = confluentcloud.RoleBinding("my-role-binding",
    principal="user:1234",  # The user who will receive the role binding.
    crn_pattern=kafka_cluster.kafka_cluster_resource_name,  # The resource the role will apply to.
    roleName="CloudClusterAdmin"  # The name of the role assigned.
)

# Exporting the environment ID and Kafka cluster ID.
pulumi.export("environment_id", environment.id)
pulumi.export("kafka_cluster_id", kafka_cluster.id)
```

In this program:

- We've created an environment called `my-environment` that groups our Confluent Cloud resources.
- We then instantiate a Kafka cluster named `my-kafka-cluster` within that environment.
- Next, we defined a role binding called `my-role-binding` that assigns the role `CloudClusterAdmin` to a user with the principal `user:1234` on the Kafka cluster we created. This user will now have admin permissions on the Kafka cluster.

After you run this Pulumi program, you will have a Kafka cluster and a role binding set up in Confluent Cloud. You can expand on this basic program according to your specific multi-tenant requirements, such as setting up additional role bindings or clusters within the environment, configuring networking or authentication settings, and more.

Remember to replace `"user:1234"` with the actual principal of the user you wish to assign the role to. The `principal` is typically the ID of the user in Confluent Cloud, and you can find it in the Confluent Cloud UI or through your admin console.