Network File System (NFS)

This post is about how to setup NFS share, and how to access the NFS from another machine.

Both server and client must have nfs-utils installed.

yum install -y nfs-utils

Enable and start nfs-server on server machine.

systemctl enable nfs-server
systemctl start nfs-server

Say /data is to be shared as NFS.

The sharing information needs to be updated in /etc/exports, then reload the configuration. The syntax of /etc/exports is

<path to share> <allowed network>(<options>)

This means, any machine from this network 192.168.56.1/24 can access to it.

You must enable this service in firewall as well.

firewall-cmd --permanent --add-service=nfs
firewall-cmd --reload

Let me create a file in the directory.

At client machine, you can set a permanent mount by specifying it in /etc/fstab.

If you create a file from this client machine, you'll get something like this.

There are a few options can be used to control the access level in /etc/exports.

rw : read write access.
ro : read only access.
root_squash : map client root to anonymous user, which you can see in the above testing (nfsnobody). This is turn on by default.
no_root_squash : turn off the root squashing.
all_squash : all client user will be mapped to anonymous user.

You can also set for secured access... but I am not familiar with it... yet. :P