Lab 24.1: NFS server, fstab and autofs

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Doel

Make server2 an NFS server, mount one share for good on server1, and mount home folders on demand with autofs.

Voordat je begint

server2 is the NFS server, server1 the client. Work as root.
Create the user nfsuser with UID 3001 on both servers (same UID).

Taken

On server2, export /exports/data (read-write) and /exports/home (read-write) to 192.168.122.0/24. Create /exports/home/nfsuser owned by nfsuser.
Open the firewall on server2 for NFS and check the export list from server1.
On server1, mount server2:/exports/data on /mnt/data at every boot.
On server1, configure autofs so /shares/data is mounted on demand from server2:/exports/data.
On server1, configure autofs so every user folder under /exports/home on server2 appears as /rhome/USER. Set the home folder of nfsuser on server1 to /rhome/nfsuser.
Log in as nfsuser on server1 and create a file in the home folder. Check on server2 that the file is there with the right owner.

Controleer je werk

$showmount -e server2
#findmnt /mnt/data
$ls /shares/data; findmnt /shares/data
#su - nfsuser -c 'pwd; touch hello.txt'
#ssh server2 ls -ln /exports/home/nfsuser

/mnt/data is mounted after a reboot.
/shares/data and /rhome/nfsuser are mounted when used.
The file on server2 is owned by UID 3001.

Hints

Toon de hints

/etc/exports, exportfs -ra, firewall-cmd --add-service={nfs,mountd,rpc-bind}.
fstab with _netdev.
/etc/auto.master.d/NAME.autofs + map file; wildcard * -rw server2:/exports/home/&.
usermod -d /rhome/nfsuser nfsuser (no -m).

Oplossing

Toon de oplossing

Exports on server2.

#dnf install -y nfs-utils
#useradd -u 3001 nfsuser
#mkdir -p /exports/data /exports/home/nfsuser
#chown nfsuser: /exports/home/nfsuser
#echo "/exports/data 192.168.122.0/24(rw,sync)" >> /etc/exports
#echo "/exports/home 192.168.122.0/24(rw,sync)" >> /etc/exports
#systemctl enable --now nfs-server; exportfs -ra

Firewall on server2 and check from server1.

#firewall-cmd --add-service={nfs,mountd,rpc-bind} --permanent; firewall-cmd --reload
$showmount -e server2

fstab on server1.

#dnf install -y nfs-utils autofs
#mkdir /mnt/data
#echo "server2:/exports/data /mnt/data nfs _netdev,defaults 0 0" >> /etc/fstab
#systemctl daemon-reload; mount -a

Indirect map.

#echo "/shares /etc/auto.shares" > /etc/auto.master.d/shares.autofs
#echo "data -rw server2:/exports/data" > /etc/auto.shares

Wildcard map and the user.

#echo "/rhome /etc/auto.rhome" > /etc/auto.master.d/rhome.autofs
#echo "* -rw server2:/exports/home/&" > /etc/auto.rhome
#systemctl enable --now autofs; systemctl restart autofs
#useradd -u 3001 -d /rhome/nfsuser -M nfsuser

Test.

#su - nfsuser -c 'pwd; touch hello.txt'
#ssh server2 ls -ln /exports/home/nfsuser

Mijn notities

Nog geen notities.

NFS server, fstab and autofs