Patent ID: 9736023
Date: 2017-08-15
CPC Classifications: H04L,H04W

Claim:
1. A cluster node status changing apparatus for changing operation states of nodes included in a cluster in a multi-node environment in which the nodes have priorities, the apparatus comprising: a valid state information receiving unit, implemented via a CPU, configured to receive information regarding whether a specific node among the nodes is unable to participate in the cluster; an activation determining unit, implemented via a CPU, configured to determine whether the specific node is in an active state or in a standby state, in case that the information indicates that the specific node is able to participate in the cluster; and a state change determining unit, implemented via a CPU, configured to determine whether to change a state of the specific node determined by the activation determining unit by using the priorities of the nodes in case that the information indicates that the specific node is able to participate in the cluster, wherein in the standby state, the node stands by from participating in the cluster when the information received by the valid state information receiving unit indicates that the specific node is able to participate in the cluster, and wherein the state change determining unit comprises: an activation information collecting unit configured to collect information on a node in the active state among the nodes in the cluster by using metadata information of the nodes, when the node in the active state is present among the nodes included in the cluster: and a standby information collecting unit configured to collect information on a node in the standby state among the nodes included in the cluster by using metadata information of the nodes, when the node in the standby state is present among the nodes included in the cluster, wherein the information on the node in the active state, which is collected by the activation information collecting unit, comprises priority information and assist flag information of the node in the active state, and wherein the information on the node on the standby state, which is collected by the standby information collecting unit, comprises priority information of the node in the standby state.