1 前言

一个问题，一篇文章，一出故事。
笔者需要在RHEL 8.x中配置NFS服务，于是整理此文。

2 实操部分

2.1 环境信息

NFS服务端，
OS = RHEL 8.x x86_64
Host Name = sftp.cmdschool.org
IP Address = any

NFS客户端，
OS = Linux
Host Name = client.cmdschool.org
IP Address = 10.168.0.8

2.2 配置NFS服务

2.2.1 安装软件包

dnf install -y nfs-utils

2.2.2 启动服务并配置自启动

systemctl start nfs-server.service
systemctl enable nfs-server.service
systemctl status nfs-server.service rpcbind.service rpc-statd

2.2.3 开放服务防火墙

firewall-cmd --permanent --add-service mountd
firewall-cmd --permanent --add-service rpc-bind
firewall-cmd --permanent --add-service nfs
firewall-cmd --reload
firewall-cmd --list-all

如果你需要确定以上命令的实际端口，请使用如下命令，

egrep "^mountd |^sunrpc |^nfs " /etc/services

可见如下显示，

sunrpc          111/tcp         portmapper rpcbind      # RPC 4.0 portmapper TCP
sunrpc          111/udp         portmapper rpcbind      # RPC 4.0 portmapper UDP
nfs             2049/tcp        nfsd shilp      # Network File System
nfs             2049/udp        nfsd shilp      # Network File System
nfs             2049/sctp       nfsd shilp      # Network File System
mountd          20048/tcp               # NFS mount protocol
mountd          20048/udp               # NFS mount protocol

2.2.4 配置nfs分享的目录

vim /etc/exports.d/client.cmdschool.org.exports

加入如下配置，

/data/sftp/sftpUser01/myhome *(rw,sync,all_squash)

另外，如果你需要限定某些IP可以访问，你可以按如下格式书写，

/data/sftp/sftpUser01/myhome 10.168.0.8/32(rw,sync,all_squash)

配置修改后，你需要重启服务才能使配置生效，

systemctl restart nfs-server

2.3 测试nfs服务

showmount -e sftp.cmdschool.org

参阅文档
====================
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/deploying_different_types_of_servers/deploying-an-nfs-server_deploying-different-types-of-servers#doc-wrapper