It looks like you are making an HTTP request to a Hadoop IPC port. This is not the correct port for
虚拟机:Ubuntu18.04hadoop:hadoop3.1.3jdk:openjdk8在虚拟机浏览器输入localhost:9000报错如图:具体:ItlookslikeyouaremakinganHTTPrequesttoaHadoopIPCport.Thisisnotthecorrectportforthewebinterfaceonthisdaemon