Introduction to the process of using NFS remote directory mounting in CentOS environment

1. Introduction to NFS

In the previous article, we explained that K8s mentioned NFS to uniformly store files generated by different Pods. The data volume in K8s directly supports NFS. You can directly specify the IP and directory of the NFS server. In this article, we will learn how to mount the NFS remote directory and mount the specified directories on different servers to the NFS server, which is similar to the shared folder in Windows, so that data can be shared between different servers. Let's experience NFS together.

NFS is the abbreviation of Network File System, which means network file system in Chinese. Its main function is to allow different host systems to share files or directories through a network (usually a local area network). The NFS client (usually an application server, such as a web server) can mount the data directory shared by the NFS server to the local system of the NFS client (that is, under a certain mount point) by mounting. From the client's local perspective, the directory shared by the NFS server looks like the client's own disk partition or directory, but in fact it is a directory on the remote NFS server.

2. NFS Construction

Overall architecture:

The purpose of this article is to ensure that files modified in 161 can be viewed or modified in 162 in a timely manner.

1. NFS server construction

Install nfs and rpcbind

yum -y install nfs-utils rpcbind

Set up automatic startup

chkconfig nfs on
Or systemctl enable nfs.service

chkconfig rpcbind on
Or systemctl enable rpcbind.service

Start the service

service rpcbind start

service nfs start

Create a server-side shared directory and grant permissions

mkdir -p /nfs/data && chmod -R 777 /nfs/data

Configure exports file

vi /etc/exports

Add the following content, and pay attention to fill in the server's IP.

/nfs/data 192.168.40.160(rw)
/nfs/data/ *(insecure,rw,async,no_root_squash)

Refresh configuration takes effect immediately

exportfs -a

View the mount directory

showmount -e 192.168.40.160

At this point the server has been built.

2. NFS client construction

Install nfs-utils

yum install nfs-utils

Create a directory and grant permissions

mkdir -p /nfs/data && chmod -R 777 /nfs/data

Hang in directory

mount 192.168.40.160:/nfs/data /nfs/data

If no error is reported at this point, it will hang on success.

3. Testing

Create the test.txt file on 161 and write some random content:

Let's look at the data in 160 or 162:

At this point, the NFS remote directory mount is successfully set up!

This is the end of this article about the process of using NFS remote directory mounting in CentOS environment. For more relevant content about using NFS directory mounting in CentOS, please search for previous articles on 123WORDPRESS.COM or continue to browse the following related articles. I hope everyone will support 123WORDPRESS.COM in the future!