Summarised [from this netapp.com article](https://bluexp.netapp.com/blog/azure-anf-blg-linux-nfs-server-how-to-set-up-server-and-client)

## Install
```bash
apt-get install nfs-kernel-server
mkdir /mnt/mysharedir
chown nobody:nogroup /mnt/mysharedir
chmod 777 /mnt/mysharedir
```
Then the `/etc/exports` file
```
# To enable access to a single client	
/mnt/myshareddir {clientIP}(rw,sync,no_subtree_check)

# To enable access to several clients	
/mnt/myshareddir {clientIP-1}(rw,sync,no_subtree_check){clientIP-2}(...){clientIP-3}(...)

# To enable access to an entire subnet	/mnt/myshareddir {subnetIP}/{subnetMask}(rw,sync,no_subtree_check)
```
example
```
/tumbler *(rw,sync,no_subtree_check)
/mnt/t420b_hdd1 *(rw,sync,no_subtree_check,nohide,crossmnt)
/mnt/t420b_hdd2 *(rw,sync,no_subtree_check,nohide,crossmnt)
/mnt/t420b_hdd3 *(rw,sync,no_subtree_check,nohide,crossmnt)
/home *(rw,sync,no_subtree_check)
```
then **to enable the mounts**
```bash
sudo exportfs -a
sudo systemctl reload nfs-kernel-server
```
## client
```bash
sudo mount -t nfs t420b:/mnt/hdd1 /path/to/hdd1
```
or in fstab
```
t420b:/mnt/hdd3 /t420b/hdd3 nfs defaults,user,noauto 0 0
```
### Timeout
Personally, I would like my {LAN} {NFS} connections to timeout after about a second or two — that is plenty on a home {LAN}. It annoyingly causes things to hang for ages no matter what `timeo=30` option I give the mount.