我正在尝试调试节点 (Dell T330)，该节点在首次开机时已自动加入节点。第一个网络接口连接到具有 Internet 访问权限的网络，节点设置为 PXE 启动，电源类型设置为 IPMI 2.0。
节点调试失败并显示以下错误消息：
Aug 14 13:02:00 uklab-maas maas.power: [info] Changing power state (cycle) of node: nova2 (qdk6g4)
Aug 14 13:02:00 uklab-maas maas.node: [info] nova2: Commissioning started
Aug 14 13:04:15 uklab-maas maas.drivers.power.ipmi: [warn] Failed to change the boot order to PXE 10.22.230.202: /usr/sbin/ipmi-config: connection timeout
Aug 14 13:04:49 uklab-maas maas.power: [error] Error changing power state (cycle) of node: nova2 (qdk6g4)
Aug 14 13:04:49 uklab-maas maas.node: [info] nova2: Status transition from COMMISSIONING to FAILED_COMMISSIONING
Aug 14 13:04:49 uklab-maas maas.node: [error] nova2: Marking node failed: Power cycle for the node failed: Could not contact node's BMC: Connection timed out while performing power action. Check BMC configuration and connectivity and try again.
几秒钟后，事件日志显示可以再次访问 BMC。
Ubuntu 16.04 / MAAS 版本：2.2.0（bzr6054-0ubuntu2~16.04.1）
有人能给出关于如何解决问题的提示吗？