检查服务：
[root@localhost ~]# systemctl status nfs
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; disabled; vendor preset: disabled)
Active: inactive (dead)
[root@localhost ~]# systemctl start nfs
[root@localhost ~]# systemctl status nfs
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; disabled; vendor preset: disabled)
Active: active (exited) since 一 2018-03-12 10:34:39 CST; 1s ago
Process: 3776 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)
Process: 3773 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)
Process: 3770 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)
Process: 4002 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
Process: 3999 ExecStartPre=/bin/sh -c /bin/kill -HUP `cat /run/gssproxy.pid` (code=exited, status=0/SUCCESS)
Process: 3996 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
Main PID: 4002 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/nfs-server.service
3月 12 10:34:39 localhost.localdomain systemd[1]: Starting NFS server and services...
3月 12 10:34:39 localhost.localdomain systemd[1]: Started NFS server and services.
[root@localhost ~]# systemctl stop nfs
[root@localhost ~]# systemctl status nfs
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; disabled; vendor preset: disabled)
Active: inactive (dead) since 一 2018-03-12 10:34:44 CST; 1s ago
Process: 4048 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)
Process: 4045 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)
Process: 4042 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)
Process: 4002 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
Process: 3999 ExecStartPre=/bin/sh -c /bin/kill -HUP `cat /run/gssproxy.pid` (code=exited, status=0/SUCCESS)
Process: 3996 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
Main PID: 4002 (code=exited, status=0/SUCCESS)
3月 12 10:34:39 localhost.localdomain systemd[1]: Starting NFS server and services...
3月 12 10:34:39 localhost.localdomain systemd[1]: Started NFS server and services.
3月 12 10:34:44 localhost.localdomain systemd[1]: Stopping NFS server and services...
3月 12 10:34:44 localhost.localdomain systemd[1]: Stopped NFS server and services.
[root@localhost ~]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
Active: active (running) since 一 2018-03-12 08:46:18 CST; 1h 50min ago
Docs: man:firewalld(1)
Main PID: 541 (firewalld)
CGroup: /system.slice/firewalld.service
└─541 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid
3月 12 08:46:15 localhost.localdomain systemd[1]: Starting firewalld - dynamic firewall daemon...
3月 12 08:46:18 localhost.localdomain systemd[1]: Started firewalld - dynamic firewall daemon.
3月 12 08:46:19 localhost.localdomain firewalld[541]: WARNING: ICMP type 'beyond-scope' is not supported by the kernel for ipv6.
3月 12 08:46:19 localhost.localdomain firewalld[541]: WARNING: beyond-scope: INVALID_ICMPTYPE: No supported ICMP type., ignoring for run-time.
3月 12 08:46:19 localhost.localdomain firewalld[541]: WARNING: ICMP type 'failed-policy' is not supported by the kernel for ipv6.
3月 12 08:46:19 localhost.localdomain firewalld[541]: WARNING: failed-policy: INVALID_ICMPTYPE: No supported ICMP type., ignoring for run-time.
3月 12 08:46:20 localhost.localdomain firewalld[541]: WARNING: ICMP type 'reject-route' is not supported by the kernel for ipv6.
3月 12 08:46:20 localhost.localdomain firewalld[541]: WARNING: reject-route: INVALID_ICMPTYPE: No supported ICMP type., ignoring for run-time.
3月 12 08:46:20 localhost.localdomain firewalld[541]: WARNING: '/usr/sbin/ip6tables-restore --wait=2 -n' failed: ip6tables-restore: line 4 failed
3月 12 08:46:20 localhost.localdomain firewalld[541]: WARNING: Applying rules for ipv6_rpfilter failed: COMMAND_FAILED
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# systemctl status firewalld.service
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled)
Active: inactive (dead) since 一 2018-03-12 10:37:06 CST; 1s ago
Docs: man:firewalld(1)
Process: 541 ExecStart=/usr/sbin/firewalld --nofork --nopid $FIREWALLD_ARGS (code=exited, status=0/SUCCESS)
Main PID: 541 (code=exited, status=0/SUCCESS)
3月 12 08:46:19 localhost.localdomain firewalld[541]: WARNING: ICMP type 'beyond-scope' is not supported by the kernel for ipv6.
3月 12 08:46:19 localhost.localdomain firewalld[541]: WARNING: beyond-scope: INVALID_ICMPTYPE: No supported ICMP type., ignoring for run-time.
3月 12 08:46:19 localhost.localdomain firewalld[541]: WARNING: ICMP type 'failed-policy' is not supported by the kernel for ipv6.
3月 12 08:46:19 localhost.localdomain firewalld[541]: WARNING: failed-policy: INVALID_ICMPTYPE: No supported ICMP type., ignoring for run-time.
3月 12 08:46:20 localhost.localdomain firewalld[541]: WARNING: ICMP type 'reject-route' is not supported by the kernel for ipv6.
3月 12 08:46:20 localhost.localdomain firewalld[541]: WARNING: reject-route: INVALID_ICMPTYPE: No supported ICMP type., ignoring for run-time.
3月 12 08:46:20 localhost.localdomain firewalld[541]: WARNING: '/usr/sbin/ip6tables-restore --wait=2 -n' failed: ip6tables-restore: line 4 failed
3月 12 08:46:20 localhost.localdomain firewalld[541]: WARNING: Applying rules for ipv6_rpfilter failed: COMMAND_FAILED
3月 12 10:37:03 localhost.localdomain systemd[1]: Stopping firewalld - dynamic firewall daemon...
3月 12 10:37:06 localhost.localdomain systemd[1]: Stopped firewalld - dynamic firewall daemon.
服务配置：
[root@localhost ~]# mkdir -p /nfs-share/ro
[root@localhost ~]# mkdir -p /nfs-share/读写
[root@localhost ~]# chmod -R 777 /nfs-share/*
[root@localhost ~]# cat /etc/exports
[root@localhost ~]# echo "/nfs-share/ro/ *(ro)" > /etc/exports
[root@localhost ~]# echo "/nfs-share/读写 *(rw)" >> /etc/exports
[root@localhost ~]# cat /etc/exports
/nfs-share/ro/ *(ro)
/nfs-share/读写 *(rw)
[root@localhost ~]# systemctl start nfs.service
[root@localhost ~]# systemctl status nfs
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; disabled; vendor preset: disabled)
Active: active (exited) since 一 2018-03-12 10:46:27 CST; 6s ago
Process: 4048 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)
Process: 4045 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)
Process: 4042 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)
Process: 4440 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)
Process: 4436 ExecStartPre=/bin/sh -c /bin/kill -HUP `cat /run/gssproxy.pid` (code=exited, status=0/SUCCESS)
Process: 4433 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)
Main PID: 4440 (code=exited, status=0/SUCCESS)
CGroup: /system.slice/nfs-server.service
3月 12 10:46:27 localhost.localdomain systemd[1]: Starting NFS server and services...
3月 12 10:46:27 localhost.localdomain systemd[1]: Started NFS server and services.
[root@localhost ~]# touch /nfs-share/ro/ro.txt
[root@localhost ~]# echo ro > /nfs-share/ro/ro.txt
[root@localhost ~]# touch /nfs-share/读写/rw.txt
[root@localhost ~]# echo rw > /nfs-share/读写/rw.txt
[root@localhost ~]# chmod 777 -R /nfs-share/*
客户端访问：（以下命令行中 [nfs-server-ip] 表示nfs服务端实际ip）
[root@client ~]# showmount -e [nfs-server-ip]
Export list for [xxxx]:
/nfs-share/读写 *
/nfs-share/ro *
[root@client ~]# mkdir client-nfs-ro client-nfs-rw
[root@client ~]# ll client-nfs-ro client-nfs-rw
client-nfs-ro:
总用量 0
client-nfs-rw:
总用量 0
[root@client ~]# mount [nfs-server-ip]:/nfs-share/ro ./client-nfs-ro/
[root@client ~]# mount [nfs-server-ip]:/nfs-share/读写 ./client-nfs-rw/
[root@client ~]# ls ./client-nfs-ro/
ro.txt
[root@client ~]# ls ./client-nfs-rw/
rw.txt
[root@client ~]# cat ./client-nfs-ro/ro.txt
ro
[root@client ~]# cat ./client-nfs-rw/rw.txt
rw
[root@client ~]# echo 111 >> ./client-nfs-ro/ro.txt
-bash: ./client-nfs-ro/ro.txt: 权限不够
[root@dapeng ~]# cat ./client-nfs-ro/ro.txt
ro
[root@client ~]# echo 111 >> ./client-nfs-rw/rw.txt
[root@client ~]# cat ./client-nfs-rw/rw.txt
rw
111
[root@client ~]# umount ./client-nfs-ro/
[root@client ~]# umount ./client-nfs-rw/
[root@client ~]# ll ./client-nfs-ro/
总用量 0
[root@client ~]# ll ./client-nfs-rw/
总用量 0
服务端指定网段访问权限：
[root@localhost ~]# cat /etc/exports
/nfs-share/ro/ *(ro)
/nfs-share/读写 *(rw)
[root@localhost ~]# mv /etc/exports /etc/exports.bak
[root@localhost ~]# echo "/nfs-share/ro/ 10.1.1.* (ro)" > /etc/exports
[root@localhost ~]# echo "/nfs-share/读写/ 10.1.1.* (rw)" >> /etc/exports
[root@localhost ~]# cat /etc/exports
/nfs-share/ro/ 10.1.1.*(ro)
/nfs-share/读写/ 10.1.1.*(rw)
[root@localhost ~]# systemctl restart nfs
[root@dapeng ~]# showmount -e [nfs-server-ip]
Export list for [xxxx]:
/nfs-share/读写 10.1.1.*
/nfs-share/ro 10.1.1.*
[root@dapeng ~]# mount [nfs-server-ip]:/nfs-share/ro ./client-nfs-ro/
mount.nfs: access denied by server while mounting [xxxx]:/nfs-share/ro