Instance control method, node, terminal and distributed storage system

An embodiment of the invention discloses an instance control method. The instance control method is applied to a main node of a distributed storage system. The distributed storage system further comprises at least two slave nodes. The instance control method comprises the steps of when determining that a first instance of a service executed by a second slave node from the slave nodes is in a faulty state, determining a first slave node from the slave nodes other than the second slave node, and transmitting a control instruction to the first slave node to control the first slave node to executethe first instance. The embodiment of the invention further discloses a node, a terminal and a distributed storage system. The reliability of the distributed storage system is improved, and the performance of the distributed storage system is improved. 本发明实施例公开了一种实例的控制方法，该方法应用于分布式存储系统的主节点中，其中，该分布式存储系统还包括至少两个从节点，包括：若确定从节点中的第二从节点所执行的服务的第一实例处于故障状态，从除了第二从节点以外的从节点中确定出第一从节点，向第一从节点发送控制指令，以控制第一从节点执行第一实例。本发明实施例还同时公开了一种节点、终端和分布式存储