Shulou(Shulou.com)06/02 Report--

Cloud Computing Learning Route sharing for good programmers: about NFS

Project name: configure back-end storage for Web Server in the cluster

NFS:Network File System network file system, a protocol for sharing files between Unix systems

The client of NFS is mainly Linux.

Support simultaneous mounting of multiple nodes and concurrent writing

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Nas 192.168.122.59

Web1 192.168.122.85

Web2 192.168.122.166

Web3 192.168.122.111

Nas 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 nas

192.168.122.85 web1

192.168.122.166 web2

192.168.122.111 web3

NFS

1. Install softwar

Yum-y install nfs-utils (file system provided by the main package)

Yum-y install rpcbind (provides rpc protocol)

two。 Start services-> both services must be enabled at the same time

Systemctl start nfs

Systemctl start rpcbind

1. Nas (storage side)

[root@nas ~] # yum-y install nfs-utils

[root@nas ~] # mkdir / webdata / / Storage website code!

[root@nas ~] # echo "nfs test..." > / webdata/index.html

[root@nas ~] # vim / etc/exports

/ webdata 192.168.122.0 root 24 (rw,sync,no_root_squash) / / do not suppress root (when the client uses root to mount, it also has root permission) Mount root, and also maintain root permission

[root@nas ~] # systemctl start nfs-server

[root@nas ~] # systemctl enable nfs-server

[root@nas] # exportfs-v

/ webdata 192.168.122.0 take 24 (rw,wdelay,no_root_squash,no_subtree_check,sec=sys,rw,secure,no_root_squash,no_all_squash)

His

II. Web1 web2 web3 client

Take web1 as an example:

[root@web1 ~] # yum-y install nfs-utils httpd

[root@web1 ~] # systemctl start httpd

[root@web1 ~] # systemctl enable httpd

Httpd

1. View storage side shares [optional]

[root@web1] # showmount-e nas

Export list for nas:

/ webdata 192.168.122.0/24

Ps-ef | grep nfs

two。 Manual mount [optional]

[root@web1] # mount-t nfs nas:/webdata / var/www/html/

[root@web1 ~] # umount / var/www/html/

3. Automatically mount to the home directory of the website

[root@web1 ~] # vim / etc/fstab

Nas:/webdata / var/www/html nfs defaults 0 0

[root@web1] # mount-a

4. View mount

[root@web1 ~] # df

Nas:/webdata 7923136 692416 6821568 10% / var/www/html

[root@web1 ~] # ls / var/www/html/

Index.html

5. Web2 web3 ditto

Third, test website access

# firefox 192.168.122.85

# firefox 192.168.122.111

# firefox 192.168.122.166

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