错误提示
Redirecting to /bin/systemctl start nfs.service
Job for nfs-server.service failed. See "systemctl status nfs-server.service" and "journalctl -xe" for details.
12月 11 17:32:41 localhost.lan exportfs[7159]: exportfs: No file systems exported!
12月 11 17:32:41 localhost.lan systemd[1]: nfs-server.service: control process exited,
12月 11 17:32:41 localhost.lan systemd[1]: Failed to start NFS server and services.
求解决方法

/etc/exports
有内容码？