您也可以在该集群上为 SI 总线手动创建附加的消息传递引擎。
You can also manually create additional messaging engines on that cluster for that SI Bus.
两个节点的发送器通道指向彼此，以交换描述集群事件的消息，如向集群添加新队列等。
The two nodes point to each other to exchange messages describing cluster events, such as adding a new queue to a cluster.
启动消息传递集群。
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