5.4 Deployment of Module Controller V2

Note: ModuleController V2 has only been tested on K8S version 1.24 and relies on certain K8S features. Therefore, the K8S version should not be lower than V1.10.

Resource File Locations

1. Role Definition
2. RBAC Definition
3. ServiceAccount Definition
4. ModuleControllerV2 Deployment Definition

Deployment Method

Use the kubectl apply command to sequentially apply the above four resource files to complete the deployment of a single-instance ModuleController.

For using the Module Controller’s sharded cluster capability, modify the above deployment definition to a Deployment version, placing the Pod Spec content into the Deployment template.

To use load balancing in a sharded cluster, set the IS_CLUSTER parameter to true in the Module Controller ENV configuration.

Configurable Parameter Explanation

Environment Variable Configuration

Below are some configurable environment variables and their explanations:

• ENABLE_MQTT_TUNNEL

  • Meaning: Flag to enable MQTT operations pipeline. Set to true to enable. If enabled, configure the related environment variables below.

• MQTT_BROKER

  • Meaning: URL of the MQTT broker.

• MQTT_PORT

  • Meaning: MQTT port number.

• MQTT_USERNAME

  • Meaning: MQTT username.

• MQTT_PASSWORD

  • Meaning: MQTT password.

• MQTT_CLIENT_PREFIX

  • Meaning: MQTT client prefix.

• ENABLE_HTTP_TUNNEL

  • Meaning: Flag to enable HTTP operations pipeline. Set to true to enable. Optionally configure the environment variables below.

• HTTP_TUNNEL_LISTEN_PORT

  • Meaning: Module Controller HTTP operations pipeline listening port, default is 7777.

• REPORT_HOOKS

  • Meaning: Error reporting links. Supports multiple links separated by ;. Currently only supports DingTalk robot webhooks.

• ENV

  • Meaning: Module Controller environment, set as VNode label for operations environment isolation.

• IS_CLUSTER

  • Meaning: Cluster flag. If true, Virtual Kubelet will start with cluster configuration.

• WORKLOAD_MAX_LEVEL

  • Meaning: Cluster configuration indicating the maximum workload level for workload calculation in Virtual Kubelet. Default is 3. Refer to Module Controller architecture design for detailed calculation rules.

• ENABLE_MODULE_DEPLOYMENT_CONTROLLER

  • Meaning: Flag to enable the Module Deployment Controller. If true, the deployment controller will start to modify Module deployment replicas and baselines.

• VNODE_WORKER_NUM

  • Meaning: Number of concurrent processing threads for VNode Modules. Set to 1 for single-threaded.

• CLIENT_ID

  • Meaning: Optional, Module Controller instance ID. need to be unique in one env, will generate a random UUID in default.

Documentation Reference

For detailed structure and implementation, refer to the documentation.