NFS

We use Network File System (NFS) to share the files on master node to worker nodes.

Contents

• NFS
  • Before Start
  • Server
  • Client

Before Start

Install packages.

yum install nfs-utils

Server

Configure the directory to shared on NFS. Edit /etc/exports.

/home 10.18.0.0/24(rw,async,no_root_squash) 10.18.18.0/24(rw,async,no_root_squash)
/opt 10.18.0.0/24(rw,async,no_root_squash) 10.18.18.0/24(rw,async,no_root_squash)

no_root_squash make root on NFS clients have same access rights as NFS server’s root.

Enable and start system service.

systemctl enable nfs-server --now

Client

Mount NFS file systems. Edit /etc/fstab.

10.18.0.1:/home /home nfs4 nofail,soft,intr,bg 0 0
10.18.0.1:/opt /opt nfs4 nofail,soft,intr,bg 0 0

Activate the mount settings.

mount -a

Note

tmpfs in CentOS are ramdisks. If exporting ramdisk over NFS, need another export flag: fsid=xxx, where xxx can be any integer greater than 0.

/ramdisk 10.18.18.0/24(rw,async,no_root_squash,fsid=1)