Good programmers cloud computing learning route Share : About NFS
Project name : the cluster of Web Server configuration back-end storage
NFS : Network File System Network File System, Unix a protocol to share files between systems
NFS clients are mainly Linux
Support for multiple nodes simultaneously mount and concurrent writes
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on 192.168.122.59
web1 192.168.122.85
web2 192.168.122.166
web3 192.168.122.111
We web1 web2 web3
# sed -ri '/^SELINUX=/cSELINUX=disabled' /etc/selinux/config
# setenforce 0
centos6
# iptables -F
# service iptables save
centos7
# systemctl stop firewalld
# systemctl disable firewalld
# Vim / etc / hosts [ Optional ]
192.168.122.59 in
192.168.122.85 web1
192.168.122.166 web2
192.168.122.111 web3
NFS
1. Install the software
yum -y install nfs-utils（主包提供文件系统）
yum -y install rpcbind（提供rpc协议）
2.启动服务------>这两个服务必须同时启用
systemctl start nfs
systemctl start rpcbind
一、nas（存储端）
[root@nas ~]# yum -y install nfs-utils
[root@nas ~]# mkdir /webdata //存储网站代码!
[root@nas ~]# echo "nfs test..." > /webdata/index.html
[root@nas ~]# vim /etc/exports
/webdata 192.168.122.0/24(rw,sync,no_root_squash) //不压制root(当client端使用root挂载时，也有root权限) 挂载是root ，同样保持root权限
[root@nas ~]# systemctl start nfs-server
[root@nas ~]# systemctl enable nfs-server
[root@nas ~]# exportfs -v
/webdata 192.168.122.0/24(rw,wdelay,no_root_squash,no_subtree_check,sec=sys,rw,secure,no_root_squash,no_all_squash)
his
二、web1 web2 web3 客户端
以web1为例：
[root@web1 ~]# yum -y install nfs-utils httpd
[root@web1 ~]# systemctl start httpd
[root@web1 ~]# systemctl enable httpd
httpd
1. 查看存储端共享 [可选]
[root@web1 ~]# showmount -e nas
Export list for nas:
/webdata 192.168.122.0/24
ps -ef | grep nfs
2. 手动挂载 [可选]
[root@web1 ~]# mount -t nfs nas:/webdata /var/www/html/
[root@web1 ~]# umount /var/www/html/
3. 自动挂载到网站主目录
[root@web1 ~]# vim /etc/fstab
nas:/webdata /var/www/html nfs defaults 0 0
[root@web1 ~]# mount -a
4. 查看挂载
[root@web1 ~]# df
nas:/webdata 7923136 692416 6821568 10% /var/www/html
[root@web1 ~]# ls /var/www/html/
index.html
5. web2 web3同上
三、测试网站访问
# firefox 192.168.122.85
# firefox 192.168.122.111
# firefox 192.168.122.166