其中
- rpcbind 在UDP TCP的111上
- NFS在UDP TCP的2049上
- 其它服务都是在UDP TCP的随机端口上进行监听(rpcbind知道在哪里)
那为什么是三个NFS 服务呢
代码语言：javascript复制[root@test ~]# rpcinfo -u localhost nfs
program 100003 version 2 ready and waiting
program 100003 version 3 ready and waiting
program 100003 version 4 ready and waiting
[root@test ~]# rpcinfo -t localhost nfs
program 100003 version 2 ready and waiting
program 100003 version 3 ready and waiting
program 100003 version 4 ready and waiting
[root@test ~]#
[root@abc ~]# rpcinfo -t test nfs
program 100003 version 2 ready and waiting
program 100003 version 3 ready and waiting
program 100003 version 4 ready and waiting
[root@abc ~]# rpcinfo -u test nfs
program 100003 version 2 ready and waiting
program 100003 version 3 ready and waiting
program 100003 version 4 ready and waiting
[root@abc ~]# 因为为了更好的兼容，NFS开启了三个版本进行响应
查看NFS共享
使用 showmount 查看NFS共享
这个工具同样依赖rpcbind
代码语言：javascript复制[root@nfs-server ~]# showmount -a localhost
All mount points on localhost:
192.168.1.215:/data/nfs
[root@nfs-server ~]# showmount -e localhost
Export list for localhost:
/data/nfs 192.168.1.0/24
[root@nfs-server ~]# cat /etc/exports
/data/nfs 192.168.1.215(rw,sync,no_root_squash) 192.168.1.0/24(ro)
[root@nfs-server ~]#
[root@nfs-client ~]# showmount -e nfs-server
Export list for nfs-server:
/data/nfs 192.168.1.0/24
[root@nfs-client ~]# showmount -a nfs-server
All mount points on nfs-server:
192.168.1.215:/data/nfs
[root@nfs-client ~]#
