当负载增加时，我的集群中的一些 JBoss 节点拒绝新连接。但是当我查看这些节点的 CPU/内存使用率时，它们只是处于最低水平，不超过 10% 的 CPU 使用率和 60% 的内存使用率。我不明白还有什么导致连接被拒绝。在某些情况下，连接在连接到任何节点之前被负载均衡器本身拒绝。也没有网络延迟。整个环境在局域网下。以下是错误信息。
Unable to connect to server. Error attempting to connect a socket to a remote address and port. Typically, the server is down or cannot open more sockets on its system. If the error detail is "java.net.ConnectException: Connection timed out: connect" for all requests, it typically means that the Load Generator is using an inappropriate network interface. Details: java.net.ConnectException: Connection refused: connect
Please refer to the documentation for further details and advice