SELinux will cause this error on CentOS/RHEL 7+ by default :( CentOS/RHEL 7+ 系统默认会因为SELinux出现这个报错 To test if SELinux is the source of your woes, do 你可以通过下面这个命令关闭SELinux,进行测试 setenforce ... and see if everything works. If that fixed it, you can leave…